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target/i386: use + to put flags together

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This gives greater opportunity for reassociation on x86 targets,
since addition can use the LEA instruction.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-05-31 11:32:19 +02:00
parent 134ffcb276
commit 6d8623b5c0
1 changed files with 12 additions and 12 deletions
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24
target/i386/tcg/cc_helper_template.h.inc
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@ -55,7 +55,7 @@ static uint32_t glue(compute_all_add, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
zf = (dst == 0) * CC_Z;
sf = lshift(dst, 8 - DATA_BITS) & CC_S;
of = lshift((src1 ^ src2 ^ -1) & (src1 ^ dst), 12 - DATA_BITS) & CC_O;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
static int glue(compute_c_add, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
@ -84,7 +84,7 @@ static uint32_t glue(compute_all_adc, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1,
zf = (dst == 0) << 6;
sf = lshift(dst, 8 - DATA_BITS) & 0x80;
of = lshift((src1 ^ src2 ^ -1) & (src1 ^ dst), 12 - DATA_BITS) & CC_O;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
static int glue(compute_c_adc, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1,
@ -110,7 +110,7 @@ static uint32_t glue(compute_all_sub, SUFFIX)(DATA_TYPE dst, DATA_TYPE src2)
zf = (dst == 0) * CC_Z;
sf = lshift(dst, 8 - DATA_BITS) & CC_S;
of = lshift((src1 ^ src2) & (src1 ^ dst), 12 - DATA_BITS) & CC_O;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
static int glue(compute_c_sub, SUFFIX)(DATA_TYPE dst, DATA_TYPE src2)
@ -141,7 +141,7 @@ static uint32_t glue(compute_all_sbb, SUFFIX)(DATA_TYPE dst, DATA_TYPE src2,
zf = (dst == 0) << 6;
sf = lshift(dst, 8 - DATA_BITS) & 0x80;
of = lshift((src1 ^ src2) & (src1 ^ dst), 12 - DATA_BITS) & CC_O;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
static int glue(compute_c_sbb, SUFFIX)(DATA_TYPE dst, DATA_TYPE src2,
@ -169,7 +169,7 @@ static uint32_t glue(compute_all_logic, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
zf = (dst == 0) * CC_Z;
sf = lshift(dst, 8 - DATA_BITS) & CC_S;
of = 0;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
static uint32_t glue(compute_all_inc, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
@ -185,7 +185,7 @@ static uint32_t glue(compute_all_inc, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
zf = (dst == 0) * CC_Z;
sf = lshift(dst, 8 - DATA_BITS) & CC_S;
of = (dst == SIGN_MASK) * CC_O;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
static uint32_t glue(compute_all_dec, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
@ -201,7 +201,7 @@ static uint32_t glue(compute_all_dec, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
zf = (dst == 0) * CC_Z;
sf = lshift(dst, 8 - DATA_BITS) & CC_S;
of = (dst == SIGN_MASK - 1) * CC_O;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
static uint32_t glue(compute_all_shl, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
@ -215,7 +215,7 @@ static uint32_t glue(compute_all_shl, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
sf = lshift(dst, 8 - DATA_BITS) & CC_S;
/* of is defined iff shift count == 1 */
of = lshift(src1 ^ dst, 12 - DATA_BITS) & CC_O;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
static int glue(compute_c_shl, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
@ -234,7 +234,7 @@ static uint32_t glue(compute_all_sar, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
sf = lshift(dst, 8 - DATA_BITS) & CC_S;
/* of is defined iff shift count == 1 */
of = lshift(src1 ^ dst, 12 - DATA_BITS) & CC_O;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
/* NOTE: we compute the flags like the P4. On olders CPUs, only OF and
@ -250,7 +250,7 @@ static uint32_t glue(compute_all_mul, SUFFIX)(DATA_TYPE dst, target_long src1)
zf = (dst == 0) * CC_Z;
sf = lshift(dst, 8 - DATA_BITS) & CC_S;
of = cf * CC_O;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
static uint32_t glue(compute_all_bmilg, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
@ -263,7 +263,7 @@ static uint32_t glue(compute_all_bmilg, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
zf = (dst == 0) * CC_Z;
sf = lshift(dst, 8 - DATA_BITS) & CC_S;
of = 0;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
static int glue(compute_c_bmilg, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
@ -281,7 +281,7 @@ static int glue(compute_all_blsi, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)
zf = (dst == 0) * CC_Z;
sf = lshift(dst, 8 - DATA_BITS) & CC_S;
of = 0;
return cf | pf | af | zf | sf | of;
return cf + pf + af + zf + sf + of;
}
static int glue(compute_c_blsi, SUFFIX)(DATA_TYPE dst, DATA_TYPE src1)