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postgres/src/backend/jit/llvm/llvmjit_expr.c
Alvaro Herrera 558d77f20e Renaming for new subscripting mechanism 
Over at patch https://commitfest.postgresql.org/21/1062/ Dmitry wants to
introduce a more generic subscription mechanism, which allows
subscripting not only arrays but also other object types such as JSONB.
That functionality is introduced in a largish invasive patch, out of
which this internal renaming patch was extracted.

Author: Dmitry Dolgov
Reviewed-by: Tom Lane, Arthur Zakirov
Discussion: https://postgr.es/m/CA+q6zcUK4EqPAu7XRRO5CCjMwhz5zvg+rfWuLzVoxp_5sKS6=w@mail.gmail.com
2019-02-01 12:50:32 -03:00

2606 lines
71 KiB
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/*-------------------------------------------------------------------------
*
* llvmjit_expr.c
* JIT compile expressions.
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* src/backend/jit/llvm/llvmjit_expr.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include <llvm-c/Core.h>
#include <llvm-c/Target.h>
#include "access/htup_details.h"
#include "access/nbtree.h"
#include "access/tupconvert.h"
#include "catalog/objectaccess.h"
#include "catalog/pg_type.h"
#include "executor/execdebug.h"
#include "executor/nodeAgg.h"
#include "executor/nodeSubplan.h"
#include "executor/execExpr.h"
#include "funcapi.h"
#include "jit/llvmjit.h"
#include "jit/llvmjit_emit.h"
#include "miscadmin.h"
#include "nodes/makefuncs.h"
#include "nodes/nodeFuncs.h"
#include "parser/parse_coerce.h"
#include "parser/parsetree.h"
#include "pgstat.h"
#include "utils/acl.h"
#include "utils/builtins.h"
#include "utils/date.h"
#include "utils/fmgrtab.h"
#include "utils/lsyscache.h"
#include "utils/memutils.h"
#include "utils/timestamp.h"
#include "utils/typcache.h"
#include "utils/xml.h"
typedef struct CompiledExprState
{
LLVMJitContext *context;
const char *funcname;
} CompiledExprState;
static Datum ExecRunCompiledExpr(ExprState *state, ExprContext *econtext, bool *isNull);
static LLVMValueRef BuildV1Call(LLVMJitContext *context, LLVMBuilderRef b,
LLVMModuleRef mod, FunctionCallInfo fcinfo,
LLVMValueRef *v_fcinfo_isnull);
static void build_EvalXFunc(LLVMBuilderRef b, LLVMModuleRef mod,
const char *funcname,
LLVMValueRef v_state, LLVMValueRef v_econtext,
ExprEvalStep *op);
static LLVMValueRef create_LifetimeEnd(LLVMModuleRef mod);
/*
* JIT compile expression.
*/
bool
llvm_compile_expr(ExprState *state)
{
PlanState *parent = state->parent;
int i;
char *funcname;
LLVMJitContext *context = NULL;
LLVMBuilderRef b;
LLVMModuleRef mod;
LLVMTypeRef eval_sig;
LLVMValueRef eval_fn;
LLVMBasicBlockRef entry;
LLVMBasicBlockRef *opblocks;
/* state itself */
LLVMValueRef v_state;
LLVMValueRef v_econtext;
/* returnvalue */
LLVMValueRef v_isnullp;
/* tmp vars in state */
LLVMValueRef v_tmpvaluep;
LLVMValueRef v_tmpisnullp;
/* slots */
LLVMValueRef v_innerslot;
LLVMValueRef v_outerslot;
LLVMValueRef v_scanslot;
LLVMValueRef v_resultslot;
/* nulls/values of slots */
LLVMValueRef v_innervalues;
LLVMValueRef v_innernulls;
LLVMValueRef v_outervalues;
LLVMValueRef v_outernulls;
LLVMValueRef v_scanvalues;
LLVMValueRef v_scannulls;
LLVMValueRef v_resultvalues;
LLVMValueRef v_resultnulls;
/* stuff in econtext */
LLVMValueRef v_aggvalues;
LLVMValueRef v_aggnulls;
instr_time starttime;
instr_time endtime;
llvm_enter_fatal_on_oom();
/* get or create JIT context */
if (parent && parent->state->es_jit)
{
context = (LLVMJitContext *) parent->state->es_jit;
}
else
{
context = llvm_create_context(parent->state->es_jit_flags);
if (parent)
{
parent->state->es_jit = &context->base;
}
}
INSTR_TIME_SET_CURRENT(starttime);
mod = llvm_mutable_module(context);
b = LLVMCreateBuilder();
funcname = llvm_expand_funcname(context, "evalexpr");
/* Create the signature and function */
{
LLVMTypeRef param_types[3];
param_types[0] = l_ptr(StructExprState); /* state */
param_types[1] = l_ptr(StructExprContext); /* econtext */
param_types[2] = l_ptr(TypeParamBool); /* isnull */
eval_sig = LLVMFunctionType(TypeSizeT,
param_types, lengthof(param_types),
false);
}
eval_fn = LLVMAddFunction(mod, funcname, eval_sig);
LLVMSetLinkage(eval_fn, LLVMExternalLinkage);
LLVMSetVisibility(eval_fn, LLVMDefaultVisibility);
llvm_copy_attributes(AttributeTemplate, eval_fn);
entry = LLVMAppendBasicBlock(eval_fn, "entry");
/* build state */
v_state = LLVMGetParam(eval_fn, 0);
v_econtext = LLVMGetParam(eval_fn, 1);
v_isnullp = LLVMGetParam(eval_fn, 2);
LLVMPositionBuilderAtEnd(b, entry);
v_tmpvaluep = LLVMBuildStructGEP(b, v_state,
FIELDNO_EXPRSTATE_RESVALUE,
"v.state.resvalue");
v_tmpisnullp = LLVMBuildStructGEP(b, v_state,
FIELDNO_EXPRSTATE_RESNULL,
"v.state.resnull");
/* build global slots */
v_scanslot = l_load_struct_gep(b, v_econtext,
FIELDNO_EXPRCONTEXT_SCANTUPLE,
"v_scanslot");
v_innerslot = l_load_struct_gep(b, v_econtext,
FIELDNO_EXPRCONTEXT_INNERTUPLE,
"v_innerslot");
v_outerslot = l_load_struct_gep(b, v_econtext,
FIELDNO_EXPRCONTEXT_OUTERTUPLE,
"v_outerslot");
v_resultslot = l_load_struct_gep(b, v_state,
FIELDNO_EXPRSTATE_RESULTSLOT,
"v_resultslot");
/* build global values/isnull pointers */
v_scanvalues = l_load_struct_gep(b, v_scanslot,
FIELDNO_TUPLETABLESLOT_VALUES,
"v_scanvalues");
v_scannulls = l_load_struct_gep(b, v_scanslot,
FIELDNO_TUPLETABLESLOT_ISNULL,
"v_scannulls");
v_innervalues = l_load_struct_gep(b, v_innerslot,
FIELDNO_TUPLETABLESLOT_VALUES,
"v_innervalues");
v_innernulls = l_load_struct_gep(b, v_innerslot,
FIELDNO_TUPLETABLESLOT_ISNULL,
"v_innernulls");
v_outervalues = l_load_struct_gep(b, v_outerslot,
FIELDNO_TUPLETABLESLOT_VALUES,
"v_outervalues");
v_outernulls = l_load_struct_gep(b, v_outerslot,
FIELDNO_TUPLETABLESLOT_ISNULL,
"v_outernulls");
v_resultvalues = l_load_struct_gep(b, v_resultslot,
FIELDNO_TUPLETABLESLOT_VALUES,
"v_resultvalues");
v_resultnulls = l_load_struct_gep(b, v_resultslot,
FIELDNO_TUPLETABLESLOT_ISNULL,
"v_resultnulls");
/* aggvalues/aggnulls */
v_aggvalues = l_load_struct_gep(b, v_econtext,
FIELDNO_EXPRCONTEXT_AGGVALUES,
"v.econtext.aggvalues");
v_aggnulls = l_load_struct_gep(b, v_econtext,
FIELDNO_EXPRCONTEXT_AGGNULLS,
"v.econtext.aggnulls");
/* allocate blocks for each op upfront, so we can do jumps easily */
opblocks = palloc(sizeof(LLVMBasicBlockRef) * state->steps_len);
for (i = 0; i < state->steps_len; i++)
opblocks[i] = l_bb_append_v(eval_fn, "b.op.%d.start", i);
/* jump from entry to first block */
LLVMBuildBr(b, opblocks[0]);
for (i = 0; i < state->steps_len; i++)
{
ExprEvalStep *op;
ExprEvalOp opcode;
LLVMValueRef v_resvaluep;
LLVMValueRef v_resnullp;
LLVMPositionBuilderAtEnd(b, opblocks[i]);
op = &state->steps[i];
opcode = ExecEvalStepOp(state, op);
v_resvaluep = l_ptr_const(op->resvalue, l_ptr(TypeSizeT));
v_resnullp = l_ptr_const(op->resnull, l_ptr(TypeStorageBool));
switch (opcode)
{
case EEOP_DONE:
{
LLVMValueRef v_tmpisnull,
v_tmpvalue;
v_tmpvalue = LLVMBuildLoad(b, v_tmpvaluep, "");
v_tmpisnull = LLVMBuildLoad(b, v_tmpisnullp, "");
v_tmpisnull =
LLVMBuildTrunc(b, v_tmpisnull, TypeParamBool, "");
LLVMBuildStore(b, v_tmpisnull, v_isnullp);
LLVMBuildRet(b, v_tmpvalue);
break;
}
case EEOP_INNER_FETCHSOME:
case EEOP_OUTER_FETCHSOME:
case EEOP_SCAN_FETCHSOME:
{
TupleDesc desc = NULL;
LLVMValueRef v_slot;
LLVMBasicBlockRef b_fetch;
LLVMValueRef v_nvalid;
LLVMValueRef l_jit_deform = NULL;
const TupleTableSlotOps *tts_ops = NULL;
b_fetch = l_bb_before_v(opblocks[i + 1],
"op.%d.fetch", i);
if (op->d.fetch.known_desc)
desc = op->d.fetch.known_desc;
if (op->d.fetch.fixed)
tts_ops = op->d.fetch.kind;
if (opcode == EEOP_INNER_FETCHSOME)
v_slot = v_innerslot;
else if (opcode == EEOP_OUTER_FETCHSOME)
v_slot = v_outerslot;
else
v_slot = v_scanslot;
/*
* Check if all required attributes are available, or
* whether deforming is required.
*
* TODO: skip nvalid check if slot is fixed and known to
* be a virtual slot.
*/
v_nvalid =
l_load_struct_gep(b, v_slot,
FIELDNO_TUPLETABLESLOT_NVALID,
"");
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntUGE, v_nvalid,
l_int16_const(op->d.fetch.last_var),
""),
opblocks[i + 1], b_fetch);
LLVMPositionBuilderAtEnd(b, b_fetch);
/*
* If the tupledesc of the to-be-deformed tuple is known,
* and JITing of deforming is enabled, build deform
* function specific to tupledesc and the exact number of
* to-be-extracted attributes.
*/
if (tts_ops && desc && (context->base.flags & PGJIT_DEFORM))
{
l_jit_deform =
slot_compile_deform(context, desc,
tts_ops,
op->d.fetch.last_var);
}
if (l_jit_deform)
{
LLVMValueRef params[1];
params[0] = v_slot;
LLVMBuildCall(b, l_jit_deform,
params, lengthof(params), "");
}
else
{
LLVMValueRef params[2];
params[0] = v_slot;
params[1] = l_int32_const(op->d.fetch.last_var);
LLVMBuildCall(b,
llvm_get_decl(mod, FuncSlotGetsomeattrsInt),
params, lengthof(params), "");
}
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_INNER_VAR:
case EEOP_OUTER_VAR:
case EEOP_SCAN_VAR:
{
LLVMValueRef value,
isnull;
LLVMValueRef v_attnum;
LLVMValueRef v_values;
LLVMValueRef v_nulls;
if (opcode == EEOP_INNER_VAR)
{
v_values = v_innervalues;
v_nulls = v_innernulls;
}
else if (opcode == EEOP_OUTER_VAR)
{
v_values = v_outervalues;
v_nulls = v_outernulls;
}
else
{
v_values = v_scanvalues;
v_nulls = v_scannulls;
}
v_attnum = l_int32_const(op->d.var.attnum);
value = l_load_gep1(b, v_values, v_attnum, "");
isnull = l_load_gep1(b, v_nulls, v_attnum, "");
LLVMBuildStore(b, value, v_resvaluep);
LLVMBuildStore(b, isnull, v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_INNER_SYSVAR:
case EEOP_OUTER_SYSVAR:
case EEOP_SCAN_SYSVAR:
{
LLVMValueRef v_slot;
LLVMValueRef v_params[4];
if (opcode == EEOP_INNER_SYSVAR)
v_slot = v_innerslot;
else if (opcode == EEOP_OUTER_SYSVAR)
v_slot = v_outerslot;
else
v_slot = v_scanslot;
v_params[0] = v_state;
v_params[1] = l_ptr_const(op, l_ptr(StructExprEvalStep));
v_params[2] = v_econtext;
v_params[3] = v_slot;
LLVMBuildCall(b,
llvm_get_decl(mod, FuncExecEvalSysVar),
v_params, lengthof(v_params), "");
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_WHOLEROW:
build_EvalXFunc(b, mod, "ExecEvalWholeRowVar",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_ASSIGN_INNER_VAR:
case EEOP_ASSIGN_OUTER_VAR:
case EEOP_ASSIGN_SCAN_VAR:
{
LLVMValueRef v_value,
v_isnull;
LLVMValueRef v_rvaluep,
v_risnullp;
LLVMValueRef v_attnum,
v_resultnum;
LLVMValueRef v_values;
LLVMValueRef v_nulls;
if (opcode == EEOP_ASSIGN_INNER_VAR)
{
v_values = v_innervalues;
v_nulls = v_innernulls;
}
else if (opcode == EEOP_ASSIGN_OUTER_VAR)
{
v_values = v_outervalues;
v_nulls = v_outernulls;
}
else
{
v_values = v_scanvalues;
v_nulls = v_scannulls;
}
/* load data */
v_attnum = l_int32_const(op->d.assign_var.attnum);
v_value = l_load_gep1(b, v_values, v_attnum, "");
v_isnull = l_load_gep1(b, v_nulls, v_attnum, "");
/* compute addresses of targets */
v_resultnum = l_int32_const(op->d.assign_var.resultnum);
v_rvaluep = LLVMBuildGEP(b, v_resultvalues,
&v_resultnum, 1, "");
v_risnullp = LLVMBuildGEP(b, v_resultnulls,
&v_resultnum, 1, "");
/* and store */
LLVMBuildStore(b, v_value, v_rvaluep);
LLVMBuildStore(b, v_isnull, v_risnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_ASSIGN_TMP:
{
LLVMValueRef v_value,
v_isnull;
LLVMValueRef v_rvaluep,
v_risnullp;
LLVMValueRef v_resultnum;
size_t resultnum = op->d.assign_tmp.resultnum;
/* load data */
v_value = LLVMBuildLoad(b, v_tmpvaluep, "");
v_isnull = LLVMBuildLoad(b, v_tmpisnullp, "");
/* compute addresses of targets */
v_resultnum = l_int32_const(resultnum);
v_rvaluep =
LLVMBuildGEP(b, v_resultvalues, &v_resultnum, 1, "");
v_risnullp =
LLVMBuildGEP(b, v_resultnulls, &v_resultnum, 1, "");
/* and store */
LLVMBuildStore(b, v_value, v_rvaluep);
LLVMBuildStore(b, v_isnull, v_risnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_ASSIGN_TMP_MAKE_RO:
{
LLVMBasicBlockRef b_notnull;
LLVMValueRef v_params[1];
LLVMValueRef v_ret;
LLVMValueRef v_value,
v_isnull;
LLVMValueRef v_rvaluep,
v_risnullp;
LLVMValueRef v_resultnum;
size_t resultnum = op->d.assign_tmp.resultnum;
b_notnull = l_bb_before_v(opblocks[i + 1],
"op.%d.assign_tmp.notnull", i);
/* load data */
v_value = LLVMBuildLoad(b, v_tmpvaluep, "");
v_isnull = LLVMBuildLoad(b, v_tmpisnullp, "");
/* compute addresses of targets */
v_resultnum = l_int32_const(resultnum);
v_rvaluep = LLVMBuildGEP(b, v_resultvalues,
&v_resultnum, 1, "");
v_risnullp = LLVMBuildGEP(b, v_resultnulls,
&v_resultnum, 1, "");
/* store nullness */
LLVMBuildStore(b, v_isnull, v_risnullp);
/* check if value is NULL */
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_isnull,
l_sbool_const(0), ""),
b_notnull, opblocks[i + 1]);
/* if value is not null, convert to RO datum */
LLVMPositionBuilderAtEnd(b, b_notnull);
v_params[0] = v_value;
v_ret =
LLVMBuildCall(b,
llvm_get_decl(mod, FuncMakeExpandedObjectReadOnlyInternal),
v_params, lengthof(v_params), "");
/* store value */
LLVMBuildStore(b, v_ret, v_rvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_CONST:
{
LLVMValueRef v_constvalue,
v_constnull;
v_constvalue = l_sizet_const(op->d.constval.value);
v_constnull = l_sbool_const(op->d.constval.isnull);
LLVMBuildStore(b, v_constvalue, v_resvaluep);
LLVMBuildStore(b, v_constnull, v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_FUNCEXPR_STRICT:
{
FunctionCallInfo fcinfo = op->d.func.fcinfo_data;
LLVMBasicBlockRef b_nonull;
int argno;
LLVMValueRef v_fcinfo;
LLVMBasicBlockRef *b_checkargnulls;
/*
* Block for the actual function call, if args are
* non-NULL.
*/
b_nonull = l_bb_before_v(opblocks[i + 1],
"b.%d.no-null-args", i);
/* should make sure they're optimized beforehand */
if (op->d.func.nargs == 0)
elog(ERROR, "argumentless strict functions are pointless");
v_fcinfo =
l_ptr_const(fcinfo, l_ptr(StructFunctionCallInfoData));
/*
* set resnull to true, if the function is actually
* called, it'll be reset
*/
LLVMBuildStore(b, l_sbool_const(1), v_resnullp);
/* create blocks for checking args, one for each */
b_checkargnulls =
palloc(sizeof(LLVMBasicBlockRef *) * op->d.func.nargs);
for (argno = 0; argno < op->d.func.nargs; argno++)
b_checkargnulls[argno] =
l_bb_before_v(b_nonull, "b.%d.isnull.%d", i, argno);
/* jump to check of first argument */
LLVMBuildBr(b, b_checkargnulls[0]);
/* check each arg for NULLness */
for (argno = 0; argno < op->d.func.nargs; argno++)
{
LLVMValueRef v_argisnull;
LLVMBasicBlockRef b_argnotnull;
LLVMPositionBuilderAtEnd(b, b_checkargnulls[argno]);
/* compute block to jump to if argument is not null */
if (argno + 1 == op->d.func.nargs)
b_argnotnull = b_nonull;
else
b_argnotnull = b_checkargnulls[argno + 1];
/* and finally load & check NULLness of arg */
v_argisnull = l_funcnull(b, v_fcinfo, argno);
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ,
v_argisnull,
l_sbool_const(1),
""),
opblocks[i + 1],
b_argnotnull);
}
LLVMPositionBuilderAtEnd(b, b_nonull);
}
/* FALLTHROUGH */
case EEOP_FUNCEXPR:
{
FunctionCallInfo fcinfo = op->d.func.fcinfo_data;
LLVMValueRef v_fcinfo_isnull;
LLVMValueRef v_retval;
v_retval = BuildV1Call(context, b, mod, fcinfo,
&v_fcinfo_isnull);
LLVMBuildStore(b, v_retval, v_resvaluep);
LLVMBuildStore(b, v_fcinfo_isnull, v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_FUNCEXPR_FUSAGE:
build_EvalXFunc(b, mod, "ExecEvalFuncExprFusage",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_FUNCEXPR_STRICT_FUSAGE:
build_EvalXFunc(b, mod, "ExecEvalFuncExprStrictFusage",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_BOOL_AND_STEP_FIRST:
{
LLVMValueRef v_boolanynullp;
v_boolanynullp = l_ptr_const(op->d.boolexpr.anynull,
l_ptr(TypeStorageBool));
LLVMBuildStore(b, l_sbool_const(0), v_boolanynullp);
}
/* FALLTHROUGH */
/*
* Treat them the same for now, optimizer can remove
* redundancy. Could be worthwhile to optimize during emission
* though.
*/
case EEOP_BOOL_AND_STEP_LAST:
case EEOP_BOOL_AND_STEP:
{
LLVMValueRef v_boolvalue;
LLVMValueRef v_boolnull;
LLVMValueRef v_boolanynullp,
v_boolanynull;
LLVMBasicBlockRef b_boolisnull;
LLVMBasicBlockRef b_boolcheckfalse;
LLVMBasicBlockRef b_boolisfalse;
LLVMBasicBlockRef b_boolcont;
LLVMBasicBlockRef b_boolisanynull;
b_boolisnull = l_bb_before_v(opblocks[i + 1],
"b.%d.boolisnull", i);
b_boolcheckfalse = l_bb_before_v(opblocks[i + 1],
"b.%d.boolcheckfalse", i);
b_boolisfalse = l_bb_before_v(opblocks[i + 1],
"b.%d.boolisfalse", i);
b_boolisanynull = l_bb_before_v(opblocks[i + 1],
"b.%d.boolisanynull", i);
b_boolcont = l_bb_before_v(opblocks[i + 1],
"b.%d.boolcont", i);
v_boolanynullp = l_ptr_const(op->d.boolexpr.anynull,
l_ptr(TypeStorageBool));
v_boolnull = LLVMBuildLoad(b, v_resnullp, "");
v_boolvalue = LLVMBuildLoad(b, v_resvaluep, "");
/* set resnull to boolnull */
LLVMBuildStore(b, v_boolnull, v_resnullp);
/* set revalue to boolvalue */
LLVMBuildStore(b, v_boolvalue, v_resvaluep);
/* check if current input is NULL */
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_boolnull,
l_sbool_const(1), ""),
b_boolisnull,
b_boolcheckfalse);
/* build block that sets anynull */
LLVMPositionBuilderAtEnd(b, b_boolisnull);
/* set boolanynull to true */
LLVMBuildStore(b, l_sbool_const(1), v_boolanynullp);
/* and jump to next block */
LLVMBuildBr(b, b_boolcont);
/* build block checking for false */
LLVMPositionBuilderAtEnd(b, b_boolcheckfalse);
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_boolvalue,
l_sizet_const(0), ""),
b_boolisfalse,
b_boolcont);
/*
* Build block handling FALSE. Value is false, so short
* circuit.
*/
LLVMPositionBuilderAtEnd(b, b_boolisfalse);
/* result is already set to FALSE, need not change it */
/* and jump to the end of the AND expression */
LLVMBuildBr(b, opblocks[op->d.boolexpr.jumpdone]);
/* Build block that continues if bool is TRUE. */
LLVMPositionBuilderAtEnd(b, b_boolcont);
v_boolanynull = LLVMBuildLoad(b, v_boolanynullp, "");
/* set value to NULL if any previous values were NULL */
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_boolanynull,
l_sbool_const(0), ""),
opblocks[i + 1], b_boolisanynull);
LLVMPositionBuilderAtEnd(b, b_boolisanynull);
/* set resnull to true */
LLVMBuildStore(b, l_sbool_const(1), v_resnullp);
/* reset resvalue */
LLVMBuildStore(b, l_sizet_const(0), v_resvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_BOOL_OR_STEP_FIRST:
{
LLVMValueRef v_boolanynullp;
v_boolanynullp = l_ptr_const(op->d.boolexpr.anynull,
l_ptr(TypeStorageBool));
LLVMBuildStore(b, l_sbool_const(0), v_boolanynullp);
}
/* FALLTHROUGH */
/*
* Treat them the same for now, optimizer can remove
* redundancy. Could be worthwhile to optimize during emission
* though.
*/
case EEOP_BOOL_OR_STEP_LAST:
case EEOP_BOOL_OR_STEP:
{
LLVMValueRef v_boolvalue;
LLVMValueRef v_boolnull;
LLVMValueRef v_boolanynullp,
v_boolanynull;
LLVMBasicBlockRef b_boolisnull;
LLVMBasicBlockRef b_boolchecktrue;
LLVMBasicBlockRef b_boolistrue;
LLVMBasicBlockRef b_boolcont;
LLVMBasicBlockRef b_boolisanynull;
b_boolisnull = l_bb_before_v(opblocks[i + 1],
"b.%d.boolisnull", i);
b_boolchecktrue = l_bb_before_v(opblocks[i + 1],
"b.%d.boolchecktrue", i);
b_boolistrue = l_bb_before_v(opblocks[i + 1],
"b.%d.boolistrue", i);
b_boolisanynull = l_bb_before_v(opblocks[i + 1],
"b.%d.boolisanynull", i);
b_boolcont = l_bb_before_v(opblocks[i + 1],
"b.%d.boolcont", i);
v_boolanynullp = l_ptr_const(op->d.boolexpr.anynull,
l_ptr(TypeStorageBool));
v_boolnull = LLVMBuildLoad(b, v_resnullp, "");
v_boolvalue = LLVMBuildLoad(b, v_resvaluep, "");
/* set resnull to boolnull */
LLVMBuildStore(b, v_boolnull, v_resnullp);
/* set revalue to boolvalue */
LLVMBuildStore(b, v_boolvalue, v_resvaluep);
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_boolnull,
l_sbool_const(1), ""),
b_boolisnull,
b_boolchecktrue);
/* build block that sets anynull */
LLVMPositionBuilderAtEnd(b, b_boolisnull);
/* set boolanynull to true */
LLVMBuildStore(b, l_sbool_const(1), v_boolanynullp);
/* and jump to next block */
LLVMBuildBr(b, b_boolcont);
/* build block checking for true */
LLVMPositionBuilderAtEnd(b, b_boolchecktrue);
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_boolvalue,
l_sizet_const(1), ""),
b_boolistrue,
b_boolcont);
/*
* Build block handling True. Value is true, so short
* circuit.
*/
LLVMPositionBuilderAtEnd(b, b_boolistrue);
/* result is already set to TRUE, need not change it */
/* and jump to the end of the OR expression */
LLVMBuildBr(b, opblocks[op->d.boolexpr.jumpdone]);
/* build block that continues if bool is FALSE */
LLVMPositionBuilderAtEnd(b, b_boolcont);
v_boolanynull = LLVMBuildLoad(b, v_boolanynullp, "");
/* set value to NULL if any previous values were NULL */
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_boolanynull,
l_sbool_const(0), ""),
opblocks[i + 1], b_boolisanynull);
LLVMPositionBuilderAtEnd(b, b_boolisanynull);
/* set resnull to true */
LLVMBuildStore(b, l_sbool_const(1), v_resnullp);
/* reset resvalue */
LLVMBuildStore(b, l_sizet_const(0), v_resvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_BOOL_NOT_STEP:
{
LLVMValueRef v_boolvalue;
LLVMValueRef v_boolnull;
LLVMValueRef v_negbool;
v_boolnull = LLVMBuildLoad(b, v_resnullp, "");
v_boolvalue = LLVMBuildLoad(b, v_resvaluep, "");
v_negbool = LLVMBuildZExt(b,
LLVMBuildICmp(b, LLVMIntEQ,
v_boolvalue,
l_sizet_const(0),
""),
TypeSizeT, "");
/* set resnull to boolnull */
LLVMBuildStore(b, v_boolnull, v_resnullp);
/* set revalue to !boolvalue */
LLVMBuildStore(b, v_negbool, v_resvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_QUAL:
{
LLVMValueRef v_resnull;
LLVMValueRef v_resvalue;
LLVMValueRef v_nullorfalse;
LLVMBasicBlockRef b_qualfail;
b_qualfail = l_bb_before_v(opblocks[i + 1],
"op.%d.qualfail", i);
v_resvalue = LLVMBuildLoad(b, v_resvaluep, "");
v_resnull = LLVMBuildLoad(b, v_resnullp, "");
v_nullorfalse =
LLVMBuildOr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_resnull,
l_sbool_const(1), ""),
LLVMBuildICmp(b, LLVMIntEQ, v_resvalue,
l_sizet_const(0), ""),
"");
LLVMBuildCondBr(b,
v_nullorfalse,
b_qualfail,
opblocks[i + 1]);
/* build block handling NULL or false */
LLVMPositionBuilderAtEnd(b, b_qualfail);
/* set resnull to false */
LLVMBuildStore(b, l_sbool_const(0), v_resnullp);
/* set resvalue to false */
LLVMBuildStore(b, l_sizet_const(0), v_resvaluep);
/* and jump out */
LLVMBuildBr(b, opblocks[op->d.qualexpr.jumpdone]);
break;
}
case EEOP_JUMP:
{
LLVMBuildBr(b, opblocks[op->d.jump.jumpdone]);
break;
}
case EEOP_JUMP_IF_NULL:
{
LLVMValueRef v_resnull;
/* Transfer control if current result is null */
v_resnull = LLVMBuildLoad(b, v_resnullp, "");
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_resnull,
l_sbool_const(1), ""),
opblocks[op->d.jump.jumpdone],
opblocks[i + 1]);
break;
}
case EEOP_JUMP_IF_NOT_NULL:
{
LLVMValueRef v_resnull;
/* Transfer control if current result is non-null */
v_resnull = LLVMBuildLoad(b, v_resnullp, "");
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_resnull,
l_sbool_const(0), ""),
opblocks[op->d.jump.jumpdone],
opblocks[i + 1]);
break;
}
case EEOP_JUMP_IF_NOT_TRUE:
{
LLVMValueRef v_resnull;
LLVMValueRef v_resvalue;
LLVMValueRef v_nullorfalse;
/* Transfer control if current result is null or false */
v_resvalue = LLVMBuildLoad(b, v_resvaluep, "");
v_resnull = LLVMBuildLoad(b, v_resnullp, "");
v_nullorfalse =
LLVMBuildOr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_resnull,
l_sbool_const(1), ""),
LLVMBuildICmp(b, LLVMIntEQ, v_resvalue,
l_sizet_const(0), ""),
"");
LLVMBuildCondBr(b,
v_nullorfalse,
opblocks[op->d.jump.jumpdone],
opblocks[i + 1]);
break;
}
case EEOP_NULLTEST_ISNULL:
{
LLVMValueRef v_resnull = LLVMBuildLoad(b, v_resnullp, "");
LLVMValueRef v_resvalue;
v_resvalue =
LLVMBuildSelect(b,
LLVMBuildICmp(b, LLVMIntEQ, v_resnull,
l_sbool_const(1), ""),
l_sizet_const(1),
l_sizet_const(0),
"");
LLVMBuildStore(b, v_resvalue, v_resvaluep);
LLVMBuildStore(b, l_sbool_const(0), v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_NULLTEST_ISNOTNULL:
{
LLVMValueRef v_resnull = LLVMBuildLoad(b, v_resnullp, "");
LLVMValueRef v_resvalue;
v_resvalue =
LLVMBuildSelect(b,
LLVMBuildICmp(b, LLVMIntEQ, v_resnull,
l_sbool_const(1), ""),
l_sizet_const(0),
l_sizet_const(1),
"");
LLVMBuildStore(b, v_resvalue, v_resvaluep);
LLVMBuildStore(b, l_sbool_const(0), v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_NULLTEST_ROWISNULL:
build_EvalXFunc(b, mod, "ExecEvalRowNull",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_NULLTEST_ROWISNOTNULL:
build_EvalXFunc(b, mod, "ExecEvalRowNotNull",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_BOOLTEST_IS_TRUE:
case EEOP_BOOLTEST_IS_NOT_FALSE:
case EEOP_BOOLTEST_IS_FALSE:
case EEOP_BOOLTEST_IS_NOT_TRUE:
{
LLVMBasicBlockRef b_isnull,
b_notnull;
LLVMValueRef v_resnull = LLVMBuildLoad(b, v_resnullp, "");
b_isnull = l_bb_before_v(opblocks[i + 1],
"op.%d.isnull", i);
b_notnull = l_bb_before_v(opblocks[i + 1],
"op.%d.isnotnull", i);
/* check if value is NULL */
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_resnull,
l_sbool_const(1), ""),
b_isnull, b_notnull);
/* if value is NULL, return false */
LLVMPositionBuilderAtEnd(b, b_isnull);
/* result is not null */
LLVMBuildStore(b, l_sbool_const(0), v_resnullp);
if (opcode == EEOP_BOOLTEST_IS_TRUE ||
opcode == EEOP_BOOLTEST_IS_FALSE)
{
LLVMBuildStore(b, l_sizet_const(0), v_resvaluep);
}
else
{
LLVMBuildStore(b, l_sizet_const(1), v_resvaluep);
}
LLVMBuildBr(b, opblocks[i + 1]);
LLVMPositionBuilderAtEnd(b, b_notnull);
if (opcode == EEOP_BOOLTEST_IS_TRUE ||
opcode == EEOP_BOOLTEST_IS_NOT_FALSE)
{
/*
* if value is not null NULL, return value (already
* set)
*/
}
else
{
LLVMValueRef v_value =
LLVMBuildLoad(b, v_resvaluep, "");
v_value = LLVMBuildZExt(b,
LLVMBuildICmp(b, LLVMIntEQ,
v_value,
l_sizet_const(0),
""),
TypeSizeT, "");
LLVMBuildStore(b, v_value, v_resvaluep);
}
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_PARAM_EXEC:
build_EvalXFunc(b, mod, "ExecEvalParamExec",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_PARAM_EXTERN:
build_EvalXFunc(b, mod, "ExecEvalParamExtern",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_PARAM_CALLBACK:
{
LLVMTypeRef param_types[3];
LLVMValueRef v_params[3];
LLVMTypeRef v_functype;
LLVMValueRef v_func;
param_types[0] = l_ptr(StructExprState);
param_types[1] = l_ptr(TypeSizeT);
param_types[2] = l_ptr(StructExprContext);
v_functype = LLVMFunctionType(LLVMVoidType(),
param_types,
lengthof(param_types),
false);
v_func = l_ptr_const(op->d.cparam.paramfunc,
l_ptr(v_functype));
v_params[0] = v_state;
v_params[1] = l_ptr_const(op, l_ptr(TypeSizeT));
v_params[2] = v_econtext;
LLVMBuildCall(b,
v_func,
v_params, lengthof(v_params), "");
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_SBSREF_OLD:
build_EvalXFunc(b, mod, "ExecEvalSubscriptingRefOld",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_SBSREF_ASSIGN:
build_EvalXFunc(b, mod, "ExecEvalSubscriptingRefAssign",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_SBSREF_FETCH:
build_EvalXFunc(b, mod, "ExecEvalSubscriptingRefFetch",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_CASE_TESTVAL:
{
LLVMBasicBlockRef b_avail,
b_notavail;
LLVMValueRef v_casevaluep,
v_casevalue;
LLVMValueRef v_casenullp,
v_casenull;
LLVMValueRef v_casevaluenull;
b_avail = l_bb_before_v(opblocks[i + 1],
"op.%d.avail", i);
b_notavail = l_bb_before_v(opblocks[i + 1],
"op.%d.notavail", i);
v_casevaluep = l_ptr_const(op->d.casetest.value,
l_ptr(TypeSizeT));
v_casenullp = l_ptr_const(op->d.casetest.isnull,
l_ptr(TypeStorageBool));
v_casevaluenull =
LLVMBuildICmp(b, LLVMIntEQ,
LLVMBuildPtrToInt(b, v_casevaluep,
TypeSizeT, ""),
l_sizet_const(0), "");
LLVMBuildCondBr(b, v_casevaluenull, b_notavail, b_avail);
/* if casetest != NULL */
LLVMPositionBuilderAtEnd(b, b_avail);
v_casevalue = LLVMBuildLoad(b, v_casevaluep, "");
v_casenull = LLVMBuildLoad(b, v_casenullp, "");
LLVMBuildStore(b, v_casevalue, v_resvaluep);
LLVMBuildStore(b, v_casenull, v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
/* if casetest == NULL */
LLVMPositionBuilderAtEnd(b, b_notavail);
v_casevalue =
l_load_struct_gep(b, v_econtext,
FIELDNO_EXPRCONTEXT_CASEDATUM, "");
v_casenull =
l_load_struct_gep(b, v_econtext,
FIELDNO_EXPRCONTEXT_CASENULL, "");
LLVMBuildStore(b, v_casevalue, v_resvaluep);
LLVMBuildStore(b, v_casenull, v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_MAKE_READONLY:
{
LLVMBasicBlockRef b_notnull;
LLVMValueRef v_params[1];
LLVMValueRef v_ret;
LLVMValueRef v_nullp;
LLVMValueRef v_valuep;
LLVMValueRef v_null;
LLVMValueRef v_value;
b_notnull = l_bb_before_v(opblocks[i + 1],
"op.%d.readonly.notnull", i);
v_nullp = l_ptr_const(op->d.make_readonly.isnull,
l_ptr(TypeStorageBool));
v_null = LLVMBuildLoad(b, v_nullp, "");
/* store null isnull value in result */
LLVMBuildStore(b, v_null, v_resnullp);
/* check if value is NULL */
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_null,
l_sbool_const(1), ""),
opblocks[i + 1], b_notnull);
/* if value is not null, convert to RO datum */
LLVMPositionBuilderAtEnd(b, b_notnull);
v_valuep = l_ptr_const(op->d.make_readonly.value,
l_ptr(TypeSizeT));
v_value = LLVMBuildLoad(b, v_valuep, "");
v_params[0] = v_value;
v_ret =
LLVMBuildCall(b,
llvm_get_decl(mod, FuncMakeExpandedObjectReadOnlyInternal),
v_params, lengthof(v_params), "");
LLVMBuildStore(b, v_ret, v_resvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_IOCOERCE:
{
FunctionCallInfo fcinfo_out,
fcinfo_in;
LLVMValueRef v_fcinfo_out,
v_fcinfo_in;
LLVMValueRef v_fn_addr_out,
v_fn_addr_in;
LLVMValueRef v_fcinfo_in_isnullp;
LLVMValueRef v_retval;
LLVMValueRef v_resvalue;
LLVMValueRef v_resnull;
LLVMValueRef v_output_skip;
LLVMValueRef v_output;
LLVMBasicBlockRef b_skipoutput;
LLVMBasicBlockRef b_calloutput;
LLVMBasicBlockRef b_input;
LLVMBasicBlockRef b_inputcall;
fcinfo_out = op->d.iocoerce.fcinfo_data_out;
fcinfo_in = op->d.iocoerce.fcinfo_data_in;
b_skipoutput = l_bb_before_v(opblocks[i + 1],
"op.%d.skipoutputnull", i);
b_calloutput = l_bb_before_v(opblocks[i + 1],
"op.%d.calloutput", i);
b_input = l_bb_before_v(opblocks[i + 1],
"op.%d.input", i);
b_inputcall = l_bb_before_v(opblocks[i + 1],
"op.%d.inputcall", i);
v_fcinfo_out = l_ptr_const(fcinfo_out, l_ptr(StructFunctionCallInfoData));
v_fcinfo_in = l_ptr_const(fcinfo_in, l_ptr(StructFunctionCallInfoData));
v_fn_addr_out = l_ptr_const(fcinfo_out->flinfo->fn_addr, TypePGFunction);
v_fn_addr_in = l_ptr_const(fcinfo_in->flinfo->fn_addr, TypePGFunction);
v_fcinfo_in_isnullp =
LLVMBuildStructGEP(b, v_fcinfo_in,
FIELDNO_FUNCTIONCALLINFODATA_ISNULL,
"v_fcinfo_in_isnull");
/* output functions are not called on nulls */
v_resnull = LLVMBuildLoad(b, v_resnullp, "");
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_resnull,
l_sbool_const(1), ""),
b_skipoutput,
b_calloutput);
LLVMPositionBuilderAtEnd(b, b_skipoutput);
v_output_skip = l_sizet_const(0);
LLVMBuildBr(b, b_input);
LLVMPositionBuilderAtEnd(b, b_calloutput);
v_resvalue = LLVMBuildLoad(b, v_resvaluep, "");
/* set arg[0] */
LLVMBuildStore(b,
v_resvalue,
l_funcvaluep(b, v_fcinfo_out, 0));
LLVMBuildStore(b,
l_sbool_const(0),
l_funcnullp(b, v_fcinfo_out, 0));
/* and call output function (can never return NULL) */
v_output = LLVMBuildCall(b, v_fn_addr_out, &v_fcinfo_out,
1, "funccall_coerce_out");
LLVMBuildBr(b, b_input);
/* build block handling input function call */
LLVMPositionBuilderAtEnd(b, b_input);
/* phi between resnull and output function call branches */
{
LLVMValueRef incoming_values[2];
LLVMBasicBlockRef incoming_blocks[2];
incoming_values[0] = v_output_skip;
incoming_blocks[0] = b_skipoutput;
incoming_values[1] = v_output;
incoming_blocks[1] = b_calloutput;
v_output = LLVMBuildPhi(b, TypeSizeT, "output");
LLVMAddIncoming(v_output,
incoming_values, incoming_blocks,
lengthof(incoming_blocks));
}
/*
* If input function is strict, skip if input string is
* NULL.
*/
if (op->d.iocoerce.finfo_in->fn_strict)
{
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_output,
l_sizet_const(0), ""),
opblocks[i + 1],
b_inputcall);
}
else
{
LLVMBuildBr(b, b_inputcall);
}
LLVMPositionBuilderAtEnd(b, b_inputcall);
/* set arguments */
/* arg0: output */
LLVMBuildStore(b, v_output,
l_funcvaluep(b, v_fcinfo_in, 0));
LLVMBuildStore(b, v_resnull,
l_funcnullp(b, v_fcinfo_in, 0));
/* arg1: ioparam: preset in execExpr.c */
/* arg2: typmod: preset in execExpr.c */
/* reset fcinfo_in->isnull */
LLVMBuildStore(b, l_sbool_const(0), v_fcinfo_in_isnullp);
/* and call function */
v_retval = LLVMBuildCall(b, v_fn_addr_in, &v_fcinfo_in, 1,
"funccall_iocoerce_in");
LLVMBuildStore(b, v_retval, v_resvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_DISTINCT:
case EEOP_NOT_DISTINCT:
{
FunctionCallInfo fcinfo = op->d.func.fcinfo_data;
LLVMValueRef v_fcinfo;
LLVMValueRef v_fcinfo_isnull;
LLVMValueRef v_argnull0,
v_argisnull0;
LLVMValueRef v_argnull1,
v_argisnull1;
LLVMValueRef v_anyargisnull;
LLVMValueRef v_bothargisnull;
LLVMValueRef v_result;
LLVMBasicBlockRef b_noargnull;
LLVMBasicBlockRef b_checkbothargnull;
LLVMBasicBlockRef b_bothargnull;
LLVMBasicBlockRef b_anyargnull;
b_noargnull = l_bb_before_v(opblocks[i + 1], "op.%d.noargnull", i);
b_checkbothargnull = l_bb_before_v(opblocks[i + 1], "op.%d.checkbothargnull", i);
b_bothargnull = l_bb_before_v(opblocks[i + 1], "op.%d.bothargnull", i);
b_anyargnull = l_bb_before_v(opblocks[i + 1], "op.%d.anyargnull", i);
v_fcinfo = l_ptr_const(fcinfo, l_ptr(StructFunctionCallInfoData));
/* load args[0|1].isnull for both arguments */
v_argnull0 = l_funcnull(b, v_fcinfo, 0);
v_argisnull0 = LLVMBuildICmp(b, LLVMIntEQ, v_argnull0,
l_sbool_const(1), "");
v_argnull1 = l_funcnull(b, v_fcinfo, 1);
v_argisnull1 = LLVMBuildICmp(b, LLVMIntEQ, v_argnull1,
l_sbool_const(1), "");
v_anyargisnull = LLVMBuildOr(b, v_argisnull0, v_argisnull1, "");
v_bothargisnull = LLVMBuildAnd(b, v_argisnull0, v_argisnull1, "");
/*
* Check function arguments for NULLness: If either is
* NULL, we check if both args are NULL. Otherwise call
* comparator.
*/
LLVMBuildCondBr(b, v_anyargisnull, b_checkbothargnull,
b_noargnull);
/*
* build block checking if any arg is null
*/
LLVMPositionBuilderAtEnd(b, b_checkbothargnull);
LLVMBuildCondBr(b, v_bothargisnull, b_bothargnull,
b_anyargnull);
/* Both NULL? Then is not distinct... */
LLVMPositionBuilderAtEnd(b, b_bothargnull);
LLVMBuildStore(b, l_sbool_const(0), v_resnullp);
if (opcode == EEOP_NOT_DISTINCT)
LLVMBuildStore(b, l_sizet_const(1), v_resvaluep);
else
LLVMBuildStore(b, l_sizet_const(0), v_resvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
/* Only one is NULL? Then is distinct... */
LLVMPositionBuilderAtEnd(b, b_anyargnull);
LLVMBuildStore(b, l_sbool_const(0), v_resnullp);
if (opcode == EEOP_NOT_DISTINCT)
LLVMBuildStore(b, l_sizet_const(0), v_resvaluep);
else
LLVMBuildStore(b, l_sizet_const(1), v_resvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
/* neither argument is null: compare */
LLVMPositionBuilderAtEnd(b, b_noargnull);
v_result = BuildV1Call(context, b, mod, fcinfo,
&v_fcinfo_isnull);
if (opcode == EEOP_DISTINCT)
{
/* Must invert result of "=" */
v_result =
LLVMBuildZExt(b,
LLVMBuildICmp(b, LLVMIntEQ,
v_result,
l_sizet_const(0), ""),
TypeSizeT, "");
}
LLVMBuildStore(b, v_fcinfo_isnull, v_resnullp);
LLVMBuildStore(b, v_result, v_resvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_NULLIF:
{
FunctionCallInfo fcinfo = op->d.func.fcinfo_data;
LLVMValueRef v_fcinfo;
LLVMValueRef v_fcinfo_isnull;
LLVMValueRef v_argnull0;
LLVMValueRef v_argnull1;
LLVMValueRef v_anyargisnull;
LLVMValueRef v_arg0;
LLVMBasicBlockRef b_hasnull;
LLVMBasicBlockRef b_nonull;
LLVMBasicBlockRef b_argsequal;
LLVMValueRef v_retval;
LLVMValueRef v_argsequal;
b_hasnull = l_bb_before_v(opblocks[i + 1],
"b.%d.null-args", i);
b_nonull = l_bb_before_v(opblocks[i + 1],
"b.%d.no-null-args", i);
b_argsequal = l_bb_before_v(opblocks[i + 1],
"b.%d.argsequal", i);
v_fcinfo = l_ptr_const(fcinfo, l_ptr(StructFunctionCallInfoData));
/* if either argument is NULL they can't be equal */
v_argnull0 = l_funcnull(b, v_fcinfo, 0);
v_argnull1 = l_funcnull(b, v_fcinfo, 1);
v_anyargisnull =
LLVMBuildOr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_argnull0,
l_sbool_const(1), ""),
LLVMBuildICmp(b, LLVMIntEQ, v_argnull1,
l_sbool_const(1), ""),
"");
LLVMBuildCondBr(b, v_anyargisnull, b_hasnull, b_nonull);
/* one (or both) of the arguments are null, return arg[0] */
LLVMPositionBuilderAtEnd(b, b_hasnull);
v_arg0 = l_funcvalue(b, v_fcinfo, 0);
LLVMBuildStore(b, v_argnull0, v_resnullp);
LLVMBuildStore(b, v_arg0, v_resvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
/* build block to invoke function and check result */
LLVMPositionBuilderAtEnd(b, b_nonull);
v_retval = BuildV1Call(context, b, mod, fcinfo, &v_fcinfo_isnull);
/*
* If result not null, and arguments are equal return null
* (same result as if there'd been NULLs, hence reuse
* b_hasnull).
*/
v_argsequal = LLVMBuildAnd(b,
LLVMBuildICmp(b, LLVMIntEQ,
v_fcinfo_isnull,
l_sbool_const(0),
""),
LLVMBuildICmp(b, LLVMIntEQ,
v_retval,
l_sizet_const(1),
""),
"");
LLVMBuildCondBr(b, v_argsequal, b_argsequal, b_hasnull);
/* build block setting result to NULL, if args are equal */
LLVMPositionBuilderAtEnd(b, b_argsequal);
LLVMBuildStore(b, l_sbool_const(1), v_resnullp);
LLVMBuildStore(b, l_sizet_const(0), v_resvaluep);
LLVMBuildStore(b, v_retval, v_resvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_SQLVALUEFUNCTION:
build_EvalXFunc(b, mod, "ExecEvalSQLValueFunction",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_CURRENTOFEXPR:
build_EvalXFunc(b, mod, "ExecEvalCurrentOfExpr",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_NEXTVALUEEXPR:
build_EvalXFunc(b, mod, "ExecEvalNextValueExpr",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_ARRAYEXPR:
build_EvalXFunc(b, mod, "ExecEvalArrayExpr",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_ARRAYCOERCE:
build_EvalXFunc(b, mod, "ExecEvalArrayCoerce",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_ROW:
build_EvalXFunc(b, mod, "ExecEvalRow",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_ROWCOMPARE_STEP:
{
FunctionCallInfo fcinfo = op->d.rowcompare_step.fcinfo_data;
LLVMValueRef v_fcinfo_isnull;
LLVMBasicBlockRef b_null;
LLVMBasicBlockRef b_compare;
LLVMBasicBlockRef b_compare_result;
LLVMValueRef v_retval;
b_null = l_bb_before_v(opblocks[i + 1],
"op.%d.row-null", i);
b_compare = l_bb_before_v(opblocks[i + 1],
"op.%d.row-compare", i);
b_compare_result =
l_bb_before_v(opblocks[i + 1],
"op.%d.row-compare-result",
i);
/*
* If function is strict, and either arg is null, we're
* done.
*/
if (op->d.rowcompare_step.finfo->fn_strict)
{
LLVMValueRef v_fcinfo;
LLVMValueRef v_argnull0;
LLVMValueRef v_argnull1;
LLVMValueRef v_anyargisnull;
v_fcinfo = l_ptr_const(fcinfo,
l_ptr(StructFunctionCallInfoData));
v_argnull0 = l_funcnull(b, v_fcinfo, 0);
v_argnull1 = l_funcnull(b, v_fcinfo, 1);
v_anyargisnull =
LLVMBuildOr(b,
LLVMBuildICmp(b,
LLVMIntEQ,
v_argnull0,
l_sbool_const(1),
""),
LLVMBuildICmp(b, LLVMIntEQ,
v_argnull1,
l_sbool_const(1), ""),
"");
LLVMBuildCondBr(b, v_anyargisnull, b_null, b_compare);
}
else
{
LLVMBuildBr(b, b_compare);
}
/* build block invoking comparison function */
LLVMPositionBuilderAtEnd(b, b_compare);
/* call function */
v_retval = BuildV1Call(context, b, mod, fcinfo,
&v_fcinfo_isnull);
LLVMBuildStore(b, v_retval, v_resvaluep);
/* if result of function is NULL, force NULL result */
LLVMBuildCondBr(b,
LLVMBuildICmp(b,
LLVMIntEQ,
v_fcinfo_isnull,
l_sbool_const(0),
""),
b_compare_result,
b_null);
/* build block analyzing the !NULL comparator result */
LLVMPositionBuilderAtEnd(b, b_compare_result);
/* if results equal, compare next, otherwise done */
LLVMBuildCondBr(b,
LLVMBuildICmp(b,
LLVMIntEQ,
v_retval,
l_sizet_const(0), ""),
opblocks[i + 1],
opblocks[op->d.rowcompare_step.jumpdone]);
/*
* Build block handling NULL input or NULL comparator
* result.
*/
LLVMPositionBuilderAtEnd(b, b_null);
LLVMBuildStore(b, l_sbool_const(1), v_resnullp);
LLVMBuildBr(b, opblocks[op->d.rowcompare_step.jumpnull]);
break;
}
case EEOP_ROWCOMPARE_FINAL:
{
RowCompareType rctype = op->d.rowcompare_final.rctype;
LLVMValueRef v_cmpresult;
LLVMValueRef v_result;
LLVMIntPredicate predicate;
/*
* Btree comparators return 32 bit results, need to be
* careful about sign (used as a 64 bit value it's
* otherwise wrong).
*/
v_cmpresult =
LLVMBuildTrunc(b,
LLVMBuildLoad(b, v_resvaluep, ""),
LLVMInt32Type(), "");
switch (rctype)
{
case ROWCOMPARE_LT:
predicate = LLVMIntSLT;
break;
case ROWCOMPARE_LE:
predicate = LLVMIntSLE;
break;
case ROWCOMPARE_GT:
predicate = LLVMIntSGT;
break;
case ROWCOMPARE_GE:
predicate = LLVMIntSGE;
break;
default:
/* EQ and NE cases aren't allowed here */
Assert(false);
predicate = 0; /* prevent compiler warning */
break;
}
v_result = LLVMBuildICmp(b,
predicate,
v_cmpresult,
l_int32_const(0),
"");
v_result = LLVMBuildZExt(b, v_result, TypeSizeT, "");
LLVMBuildStore(b, l_sbool_const(0), v_resnullp);
LLVMBuildStore(b, v_result, v_resvaluep);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_MINMAX:
build_EvalXFunc(b, mod, "ExecEvalMinMax",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_FIELDSELECT:
build_EvalXFunc(b, mod, "ExecEvalFieldSelect",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_FIELDSTORE_DEFORM:
build_EvalXFunc(b, mod, "ExecEvalFieldStoreDeForm",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_FIELDSTORE_FORM:
build_EvalXFunc(b, mod, "ExecEvalFieldStoreForm",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_SBSREF_SUBSCRIPT:
{
LLVMValueRef v_fn;
int jumpdone = op->d.sbsref_subscript.jumpdone;
LLVMValueRef v_params[2];
LLVMValueRef v_ret;
v_fn = llvm_get_decl(mod, FuncExecEvalSubscriptingRef);
v_params[0] = v_state;
v_params[1] = l_ptr_const(op, l_ptr(StructExprEvalStep));
v_ret = LLVMBuildCall(b, v_fn,
v_params, lengthof(v_params), "");
v_ret = LLVMBuildZExt(b, v_ret, TypeStorageBool, "");
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_ret,
l_sbool_const(1), ""),
opblocks[i + 1],
opblocks[jumpdone]);
break;
}
case EEOP_DOMAIN_TESTVAL:
{
LLVMBasicBlockRef b_avail,
b_notavail;
LLVMValueRef v_casevaluep,
v_casevalue;
LLVMValueRef v_casenullp,
v_casenull;
LLVMValueRef v_casevaluenull;
b_avail = l_bb_before_v(opblocks[i + 1],
"op.%d.avail", i);
b_notavail = l_bb_before_v(opblocks[i + 1],
"op.%d.notavail", i);
v_casevaluep = l_ptr_const(op->d.casetest.value,
l_ptr(TypeSizeT));
v_casenullp = l_ptr_const(op->d.casetest.isnull,
l_ptr(TypeStorageBool));
v_casevaluenull =
LLVMBuildICmp(b, LLVMIntEQ,
LLVMBuildPtrToInt(b, v_casevaluep,
TypeSizeT, ""),
l_sizet_const(0), "");
LLVMBuildCondBr(b,
v_casevaluenull,
b_notavail, b_avail);
/* if casetest != NULL */
LLVMPositionBuilderAtEnd(b, b_avail);
v_casevalue = LLVMBuildLoad(b, v_casevaluep, "");
v_casenull = LLVMBuildLoad(b, v_casenullp, "");
LLVMBuildStore(b, v_casevalue, v_resvaluep);
LLVMBuildStore(b, v_casenull, v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
/* if casetest == NULL */
LLVMPositionBuilderAtEnd(b, b_notavail);
v_casevalue =
l_load_struct_gep(b, v_econtext,
FIELDNO_EXPRCONTEXT_DOMAINDATUM,
"");
v_casenull =
l_load_struct_gep(b, v_econtext,
FIELDNO_EXPRCONTEXT_DOMAINNULL,
"");
LLVMBuildStore(b, v_casevalue, v_resvaluep);
LLVMBuildStore(b, v_casenull, v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_DOMAIN_NOTNULL:
build_EvalXFunc(b, mod, "ExecEvalConstraintNotNull",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_DOMAIN_CHECK:
build_EvalXFunc(b, mod, "ExecEvalConstraintCheck",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_CONVERT_ROWTYPE:
build_EvalXFunc(b, mod, "ExecEvalConvertRowtype",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_SCALARARRAYOP:
build_EvalXFunc(b, mod, "ExecEvalScalarArrayOp",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_XMLEXPR:
build_EvalXFunc(b, mod, "ExecEvalXmlExpr",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_AGGREF:
{
AggrefExprState *aggref = op->d.aggref.astate;
LLVMValueRef v_aggnop;
LLVMValueRef v_aggno;
LLVMValueRef value,
isnull;
/*
* At this point aggref->aggno is not yet set (it's set up
* in ExecInitAgg() after initializing the expression). So
* load it from memory each time round.
*/
v_aggnop = l_ptr_const(&aggref->aggno,
l_ptr(LLVMInt32Type()));
v_aggno = LLVMBuildLoad(b, v_aggnop, "v_aggno");
/* load agg value / null */
value = l_load_gep1(b, v_aggvalues, v_aggno, "aggvalue");
isnull = l_load_gep1(b, v_aggnulls, v_aggno, "aggnull");
/* and store result */
LLVMBuildStore(b, value, v_resvaluep);
LLVMBuildStore(b, isnull, v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_GROUPING_FUNC:
build_EvalXFunc(b, mod, "ExecEvalGroupingFunc",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_WINDOW_FUNC:
{
WindowFuncExprState *wfunc = op->d.window_func.wfstate;
LLVMValueRef v_wfuncnop;
LLVMValueRef v_wfuncno;
LLVMValueRef value,
isnull;
/*
* At this point aggref->wfuncno is not yet set (it's set
* up in ExecInitWindowAgg() after initializing the
* expression). So load it from memory each time round.
*/
v_wfuncnop = l_ptr_const(&wfunc->wfuncno,
l_ptr(LLVMInt32Type()));
v_wfuncno = LLVMBuildLoad(b, v_wfuncnop, "v_wfuncno");
/* load window func value / null */
value = l_load_gep1(b, v_aggvalues, v_wfuncno,
"windowvalue");
isnull = l_load_gep1(b, v_aggnulls, v_wfuncno,
"windownull");
LLVMBuildStore(b, value, v_resvaluep);
LLVMBuildStore(b, isnull, v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_SUBPLAN:
build_EvalXFunc(b, mod, "ExecEvalSubPlan",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_ALTERNATIVE_SUBPLAN:
build_EvalXFunc(b, mod, "ExecEvalAlternativeSubPlan",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_AGG_STRICT_DESERIALIZE:
{
FunctionCallInfo fcinfo = op->d.agg_deserialize.fcinfo_data;
LLVMValueRef v_fcinfo;
LLVMValueRef v_argnull0;
LLVMBasicBlockRef b_deserialize;
b_deserialize = l_bb_before_v(opblocks[i + 1],
"op.%d.deserialize", i);
v_fcinfo = l_ptr_const(fcinfo,
l_ptr(StructFunctionCallInfoData));
v_argnull0 = l_funcnull(b, v_fcinfo, 0);
LLVMBuildCondBr(b,
LLVMBuildICmp(b,
LLVMIntEQ,
v_argnull0,
l_sbool_const(1),
""),
opblocks[op->d.agg_deserialize.jumpnull],
b_deserialize);
LLVMPositionBuilderAtEnd(b, b_deserialize);
}
/* FALLTHROUGH */
case EEOP_AGG_DESERIALIZE:
{
AggState *aggstate;
FunctionCallInfo fcinfo;
LLVMValueRef v_retval;
LLVMValueRef v_fcinfo_isnull;
LLVMValueRef v_tmpcontext;
LLVMValueRef v_oldcontext;
aggstate = op->d.agg_deserialize.aggstate;
fcinfo = op->d.agg_deserialize.fcinfo_data;
v_tmpcontext =
l_ptr_const(aggstate->tmpcontext->ecxt_per_tuple_memory,
l_ptr(StructMemoryContextData));
v_oldcontext = l_mcxt_switch(mod, b, v_tmpcontext);
v_retval = BuildV1Call(context, b, mod, fcinfo,
&v_fcinfo_isnull);
l_mcxt_switch(mod, b, v_oldcontext);
LLVMBuildStore(b, v_retval, v_resvaluep);
LLVMBuildStore(b, v_fcinfo_isnull, v_resnullp);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_AGG_STRICT_INPUT_CHECK_NULLS:
case EEOP_AGG_STRICT_INPUT_CHECK_ARGS:
{
int nargs = op->d.agg_strict_input_check.nargs;
NullableDatum *args = op->d.agg_strict_input_check.args;
bool *nulls = op->d.agg_strict_input_check.nulls;
int jumpnull;
int argno;
LLVMValueRef v_argsp;
LLVMValueRef v_nullsp;
LLVMBasicBlockRef *b_checknulls;
Assert(nargs > 0);
jumpnull = op->d.agg_strict_input_check.jumpnull;
v_argsp = l_ptr_const(args, l_ptr(StructNullableDatum));
v_nullsp = l_ptr_const(nulls, l_ptr(TypeStorageBool));
/* create blocks for checking args */
b_checknulls = palloc(sizeof(LLVMBasicBlockRef *) * nargs);
for (argno = 0; argno < nargs; argno++)
{
b_checknulls[argno] =
l_bb_before_v(opblocks[i + 1],
"op.%d.check-null.%d",
i, argno);
}
LLVMBuildBr(b, b_checknulls[0]);
/* strict function, check for NULL args */
for (argno = 0; argno < nargs; argno++)
{
LLVMValueRef v_argno = l_int32_const(argno);
LLVMValueRef v_argisnull;
LLVMBasicBlockRef b_argnotnull;
LLVMPositionBuilderAtEnd(b, b_checknulls[argno]);
if (argno + 1 == nargs)
b_argnotnull = opblocks[i + 1];
else
b_argnotnull = b_checknulls[argno + 1];
if (opcode == EEOP_AGG_STRICT_INPUT_CHECK_NULLS)
v_argisnull = l_load_gep1(b, v_nullsp, v_argno, "");
else
{
LLVMValueRef v_argn;
v_argn = LLVMBuildGEP(b, v_argsp, &v_argno, 1, "");
v_argisnull =
l_load_struct_gep(b, v_argn,
FIELDNO_NULLABLE_DATUM_ISNULL,
"");
}
LLVMBuildCondBr(b,
LLVMBuildICmp(b,
LLVMIntEQ,
v_argisnull,
l_sbool_const(1), ""),
opblocks[jumpnull],
b_argnotnull);
}
break;
}
case EEOP_AGG_INIT_TRANS:
{
AggState *aggstate;
AggStatePerTrans pertrans;
LLVMValueRef v_aggstatep;
LLVMValueRef v_pertransp;
LLVMValueRef v_allpergroupsp;
LLVMValueRef v_pergroupp;
LLVMValueRef v_setoff,
v_transno;
LLVMValueRef v_notransvalue;
LLVMBasicBlockRef b_init;
aggstate = op->d.agg_init_trans.aggstate;
pertrans = op->d.agg_init_trans.pertrans;
v_aggstatep = l_ptr_const(aggstate,
l_ptr(StructAggState));
v_pertransp = l_ptr_const(pertrans,
l_ptr(StructAggStatePerTransData));
/*
* pergroup = &aggstate->all_pergroups
* [op->d.agg_init_trans_check.setoff]
* [op->d.agg_init_trans_check.transno];
*/
v_allpergroupsp =
l_load_struct_gep(b, v_aggstatep,
FIELDNO_AGGSTATE_ALL_PERGROUPS,
"aggstate.all_pergroups");
v_setoff = l_int32_const(op->d.agg_init_trans.setoff);
v_transno = l_int32_const(op->d.agg_init_trans.transno);
v_pergroupp =
LLVMBuildGEP(b,
l_load_gep1(b, v_allpergroupsp, v_setoff, ""),
&v_transno, 1, "");
v_notransvalue =
l_load_struct_gep(b, v_pergroupp,
FIELDNO_AGGSTATEPERGROUPDATA_NOTRANSVALUE,
"notransvalue");
b_init = l_bb_before_v(opblocks[i + 1],
"op.%d.inittrans", i);
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_notransvalue,
l_sbool_const(1), ""),
b_init,
opblocks[i + 1]);
LLVMPositionBuilderAtEnd(b, b_init);
{
LLVMValueRef params[3];
LLVMValueRef v_curaggcontext;
LLVMValueRef v_current_set;
LLVMValueRef v_aggcontext;
v_aggcontext = l_ptr_const(op->d.agg_init_trans.aggcontext,
l_ptr(StructExprContext));
v_current_set =
LLVMBuildStructGEP(b,
v_aggstatep,
FIELDNO_AGGSTATE_CURRENT_SET,
"aggstate.current_set");
v_curaggcontext =
LLVMBuildStructGEP(b,
v_aggstatep,
FIELDNO_AGGSTATE_CURAGGCONTEXT,
"aggstate.curaggcontext");
LLVMBuildStore(b, l_int32_const(op->d.agg_init_trans.setno),
v_current_set);
LLVMBuildStore(b, v_aggcontext,
v_curaggcontext);
params[0] = v_aggstatep;
params[1] = v_pertransp;
params[2] = v_pergroupp;
LLVMBuildCall(b,
llvm_get_decl(mod, FuncExecAggInitGroup),
params, lengthof(params),
"");
}
LLVMBuildBr(b, opblocks[op->d.agg_init_trans.jumpnull]);
break;
}
case EEOP_AGG_STRICT_TRANS_CHECK:
{
AggState *aggstate;
LLVMValueRef v_setoff,
v_transno;
LLVMValueRef v_aggstatep;
LLVMValueRef v_allpergroupsp;
LLVMValueRef v_transnull;
LLVMValueRef v_pergroupp;
int jumpnull = op->d.agg_strict_trans_check.jumpnull;
aggstate = op->d.agg_strict_trans_check.aggstate;
v_aggstatep = l_ptr_const(aggstate, l_ptr(StructAggState));
/*
* pergroup = &aggstate->all_pergroups
* [op->d.agg_strict_trans_check.setoff]
* [op->d.agg_init_trans_check.transno];
*/
v_allpergroupsp =
l_load_struct_gep(b, v_aggstatep,
FIELDNO_AGGSTATE_ALL_PERGROUPS,
"aggstate.all_pergroups");
v_setoff =
l_int32_const(op->d.agg_strict_trans_check.setoff);
v_transno =
l_int32_const(op->d.agg_strict_trans_check.transno);
v_pergroupp =
LLVMBuildGEP(b,
l_load_gep1(b, v_allpergroupsp, v_setoff, ""),
&v_transno, 1, "");
v_transnull =
l_load_struct_gep(b, v_pergroupp,
FIELDNO_AGGSTATEPERGROUPDATA_TRANSVALUEISNULL,
"transnull");
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ, v_transnull,
l_sbool_const(1), ""),
opblocks[jumpnull],
opblocks[i + 1]);
break;
}
case EEOP_AGG_PLAIN_TRANS_BYVAL:
case EEOP_AGG_PLAIN_TRANS:
{
AggState *aggstate;
AggStatePerTrans pertrans;
FunctionCallInfo fcinfo;
LLVMValueRef v_aggstatep;
LLVMValueRef v_fcinfo;
LLVMValueRef v_fcinfo_isnull;
LLVMValueRef v_transvaluep;
LLVMValueRef v_transnullp;
LLVMValueRef v_setoff;
LLVMValueRef v_transno;
LLVMValueRef v_aggcontext;
LLVMValueRef v_allpergroupsp;
LLVMValueRef v_current_setp;
LLVMValueRef v_current_pertransp;
LLVMValueRef v_curaggcontext;
LLVMValueRef v_pertransp;
LLVMValueRef v_pergroupp;
LLVMValueRef v_retval;
LLVMValueRef v_tmpcontext;
LLVMValueRef v_oldcontext;
aggstate = op->d.agg_trans.aggstate;
pertrans = op->d.agg_trans.pertrans;
fcinfo = pertrans->transfn_fcinfo;
v_aggstatep = l_ptr_const(aggstate,
l_ptr(StructAggState));
v_pertransp = l_ptr_const(pertrans,
l_ptr(StructAggStatePerTransData));
/*
* pergroup = &aggstate->all_pergroups
* [op->d.agg_strict_trans_check.setoff]
* [op->d.agg_init_trans_check.transno];
*/
v_allpergroupsp =
l_load_struct_gep(b, v_aggstatep,
FIELDNO_AGGSTATE_ALL_PERGROUPS,
"aggstate.all_pergroups");
v_setoff = l_int32_const(op->d.agg_trans.setoff);
v_transno = l_int32_const(op->d.agg_trans.transno);
v_pergroupp =
LLVMBuildGEP(b,
l_load_gep1(b, v_allpergroupsp, v_setoff, ""),
&v_transno, 1, "");
v_fcinfo = l_ptr_const(fcinfo,
l_ptr(StructFunctionCallInfoData));
v_aggcontext = l_ptr_const(op->d.agg_trans.aggcontext,
l_ptr(StructExprContext));
v_current_setp =
LLVMBuildStructGEP(b,
v_aggstatep,
FIELDNO_AGGSTATE_CURRENT_SET,
"aggstate.current_set");
v_curaggcontext =
LLVMBuildStructGEP(b,
v_aggstatep,
FIELDNO_AGGSTATE_CURAGGCONTEXT,
"aggstate.curaggcontext");
v_current_pertransp =
LLVMBuildStructGEP(b,
v_aggstatep,
FIELDNO_AGGSTATE_CURPERTRANS,
"aggstate.curpertrans");
/* set aggstate globals */
LLVMBuildStore(b, v_aggcontext, v_curaggcontext);
LLVMBuildStore(b, l_int32_const(op->d.agg_trans.setno),
v_current_setp);
LLVMBuildStore(b, v_pertransp, v_current_pertransp);
/* invoke transition function in per-tuple context */
v_tmpcontext =
l_ptr_const(aggstate->tmpcontext->ecxt_per_tuple_memory,
l_ptr(StructMemoryContextData));
v_oldcontext = l_mcxt_switch(mod, b, v_tmpcontext);
/* store transvalue in fcinfo->args[0] */
v_transvaluep =
LLVMBuildStructGEP(b, v_pergroupp,
FIELDNO_AGGSTATEPERGROUPDATA_TRANSVALUE,
"transvalue");
v_transnullp =
LLVMBuildStructGEP(b, v_pergroupp,
FIELDNO_AGGSTATEPERGROUPDATA_TRANSVALUEISNULL,
"transnullp");
LLVMBuildStore(b,
LLVMBuildLoad(b, v_transvaluep,
"transvalue"),
l_funcvaluep(b, v_fcinfo, 0));
LLVMBuildStore(b,
LLVMBuildLoad(b, v_transnullp, "transnull"),
l_funcnullp(b, v_fcinfo, 0));
/* and invoke transition function */
v_retval = BuildV1Call(context, b, mod, fcinfo,
&v_fcinfo_isnull);
/*
* For pass-by-ref datatype, must copy the new value into
* aggcontext and free the prior transValue. But if
* transfn returned a pointer to its first input, we don't
* need to do anything. Also, if transfn returned a
* pointer to a R/W expanded object that is already a
* child of the aggcontext, assume we can adopt that value
* without copying it.
*/
if (opcode == EEOP_AGG_PLAIN_TRANS)
{
LLVMBasicBlockRef b_call;
LLVMBasicBlockRef b_nocall;
LLVMValueRef v_fn;
LLVMValueRef v_transvalue;
LLVMValueRef v_transnull;
LLVMValueRef v_newval;
LLVMValueRef params[6];
b_call = l_bb_before_v(opblocks[i + 1],
"op.%d.transcall", i);
b_nocall = l_bb_before_v(opblocks[i + 1],
"op.%d.transnocall", i);
v_transvalue = LLVMBuildLoad(b, v_transvaluep, "");
v_transnull = LLVMBuildLoad(b, v_transnullp, "");
/*
* DatumGetPointer(newVal) !=
* DatumGetPointer(pergroup->transValue))
*/
LLVMBuildCondBr(b,
LLVMBuildICmp(b, LLVMIntEQ,
v_transvalue,
v_retval, ""),
b_nocall, b_call);
/* returned datum not passed datum, reparent */
LLVMPositionBuilderAtEnd(b, b_call);
params[0] = v_aggstatep;
params[1] = v_pertransp;
params[2] = v_retval;
params[3] = LLVMBuildTrunc(b, v_fcinfo_isnull,
TypeParamBool, "");
params[4] = v_transvalue;
params[5] = LLVMBuildTrunc(b, v_transnull,
TypeParamBool, "");
v_fn = llvm_get_decl(mod, FuncExecAggTransReparent);
v_newval =
LLVMBuildCall(b, v_fn,
params, lengthof(params),
"");
/* store trans value */
LLVMBuildStore(b, v_newval, v_transvaluep);
LLVMBuildStore(b, v_fcinfo_isnull, v_transnullp);
l_mcxt_switch(mod, b, v_oldcontext);
LLVMBuildBr(b, opblocks[i + 1]);
/* returned datum passed datum, no need to reparent */
LLVMPositionBuilderAtEnd(b, b_nocall);
}
/* store trans value */
LLVMBuildStore(b, v_retval, v_transvaluep);
LLVMBuildStore(b, v_fcinfo_isnull, v_transnullp);
l_mcxt_switch(mod, b, v_oldcontext);
LLVMBuildBr(b, opblocks[i + 1]);
break;
}
case EEOP_AGG_ORDERED_TRANS_DATUM:
build_EvalXFunc(b, mod, "ExecEvalAggOrderedTransDatum",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_AGG_ORDERED_TRANS_TUPLE:
build_EvalXFunc(b, mod, "ExecEvalAggOrderedTransTuple",
v_state, v_econtext, op);
LLVMBuildBr(b, opblocks[i + 1]);
break;
case EEOP_LAST:
Assert(false);
break;
}
}
LLVMDisposeBuilder(b);
/*
* Don't immediately emit function, instead do so the first time the
* expression is actually evaluated. That allows to emit a lot of
* functions together, avoiding a lot of repeated llvm and memory
* remapping overhead.
*/
{
CompiledExprState *cstate = palloc0(sizeof(CompiledExprState));
cstate->context = context;
cstate->funcname = funcname;
state->evalfunc = ExecRunCompiledExpr;
state->evalfunc_private = cstate;
}
llvm_leave_fatal_on_oom();
INSTR_TIME_SET_CURRENT(endtime);
INSTR_TIME_ACCUM_DIFF(context->base.instr.generation_counter,
endtime, starttime);
return true;
}
/*
* Run compiled expression.
*
* This will only be called the first time a JITed expression is called. We
* first make sure the expression is still up2date, and then get a pointer to
* the emitted function. The latter can be the first thing that triggers
* optimizing and emitting all the generated functions.
*/
static Datum
ExecRunCompiledExpr(ExprState *state, ExprContext *econtext, bool *isNull)
{
CompiledExprState *cstate = state->evalfunc_private;
ExprStateEvalFunc func;
CheckExprStillValid(state, econtext);
llvm_enter_fatal_on_oom();
func = (ExprStateEvalFunc) llvm_get_function(cstate->context,
cstate->funcname);
llvm_leave_fatal_on_oom();
Assert(func);
/* remove indirection via this function for future calls */
state->evalfunc = func;
return func(state, econtext, isNull);
}
static LLVMValueRef
BuildV1Call(LLVMJitContext *context, LLVMBuilderRef b,
LLVMModuleRef mod, FunctionCallInfo fcinfo,
LLVMValueRef *v_fcinfo_isnull)
{
LLVMValueRef v_fn;
LLVMValueRef v_fcinfo_isnullp;
LLVMValueRef v_retval;
LLVMValueRef v_fcinfo;
v_fn = llvm_function_reference(context, b, mod, fcinfo);
v_fcinfo = l_ptr_const(fcinfo, l_ptr(StructFunctionCallInfoData));
v_fcinfo_isnullp = LLVMBuildStructGEP(b, v_fcinfo,
FIELDNO_FUNCTIONCALLINFODATA_ISNULL,
"v_fcinfo_isnull");
LLVMBuildStore(b, l_sbool_const(0), v_fcinfo_isnullp);
v_retval = LLVMBuildCall(b, v_fn, &v_fcinfo, 1, "funccall");
if (v_fcinfo_isnull)
*v_fcinfo_isnull = LLVMBuildLoad(b, v_fcinfo_isnullp, "");
/*
* Add lifetime-end annotation, signalling that writes to memory don't
* have to be retained (important for inlining potential).
*/
{
LLVMValueRef v_lifetime = create_LifetimeEnd(mod);
LLVMValueRef params[2];
params[0] = l_int64_const(sizeof(NullableDatum) * fcinfo->nargs);
params[1] = l_ptr_const(fcinfo->args, l_ptr(LLVMInt8Type()));
LLVMBuildCall(b, v_lifetime, params, lengthof(params), "");
params[0] = l_int64_const(sizeof(fcinfo->isnull));
params[1] = l_ptr_const(&fcinfo->isnull, l_ptr(LLVMInt8Type()));
LLVMBuildCall(b, v_lifetime, params, lengthof(params), "");
}
return v_retval;
}
/*
* Implement an expression step by calling the function funcname.
*/
static void
build_EvalXFunc(LLVMBuilderRef b, LLVMModuleRef mod, const char *funcname,
LLVMValueRef v_state, LLVMValueRef v_econtext,
ExprEvalStep *op)
{
LLVMTypeRef sig;
LLVMValueRef v_fn;
LLVMTypeRef param_types[3];
LLVMValueRef params[3];
v_fn = LLVMGetNamedFunction(mod, funcname);
if (!v_fn)
{
param_types[0] = l_ptr(StructExprState);
param_types[1] = l_ptr(StructExprEvalStep);
param_types[2] = l_ptr(StructExprContext);
sig = LLVMFunctionType(LLVMVoidType(),
param_types, lengthof(param_types),
false);
v_fn = LLVMAddFunction(mod, funcname, sig);
}
params[0] = v_state;
params[1] = l_ptr_const(op, l_ptr(StructExprEvalStep));
params[2] = v_econtext;
LLVMBuildCall(b,
v_fn,
params, lengthof(params), "");
}
static LLVMValueRef
create_LifetimeEnd(LLVMModuleRef mod)
{
LLVMTypeRef sig;
LLVMValueRef fn;
LLVMTypeRef param_types[2];
/* LLVM 5+ has a variadic pointer argument */
#if LLVM_VERSION_MAJOR < 5
const char *nm = "llvm.lifetime.end";
#else
const char *nm = "llvm.lifetime.end.p0i8";
#endif
fn = LLVMGetNamedFunction(mod, nm);
if (fn)
return fn;
param_types[0] = LLVMInt64Type();
param_types[1] = l_ptr(LLVMInt8Type());
sig = LLVMFunctionType(LLVMVoidType(),
param_types, lengthof(param_types),
false);
fn = LLVMAddFunction(mod, nm, sig);
LLVMSetFunctionCallConv(fn, LLVMCCallConv);
Assert(LLVMGetIntrinsicID(fn));
return fn;
}
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