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Bring in diff from 1.144.4.10 to 1.144.4.11, from the gcc CVS repository. 

This fixes (at least) broken compilation of xkbcomp with -O2 on powerpc.

ChangeLog entry:
2001-05-17  Bernd Schmidt  <bernds@redhat.com>

        * expr.c (protect_from_queue): Protect against subsequent calls to
        emit_queue.
        (expand_expr, case ADDR_EXPR): Prevent protect_from_queue from being
        too clever.

CVS log entry:
revision 1.144.4.11
date: 2001/05/17 17:01:06;  author: bernds;  state: Exp;  lines: +10 -3
Fix queueing-related bugs
This commit is contained in:
aymeric 2002-07-14 13:55:38 +00:00
parent c24cb24f0d
commit 169b0eb038
1 changed files with 10 additions and 3 deletions
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13
gnu/dist/toolchain/gcc/expr.c vendored
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@ -449,6 +449,9 @@ protect_from_queue (x, modify)
QUEUED_INSN (y));
return temp;
}
/* Copy the address into a pseudo, so that the returned value
remains correct across calls to emit_queue. */
XEXP (new, 0) = copy_to_reg (XEXP (new, 0));
return new;
}
/* Otherwise, recursively protect the subexpressions of all
@ -475,9 +478,11 @@ protect_from_queue (x, modify)
}
return x;
}
/* If the increment has not happened, use the variable itself. */
/* If the increment has not happened, use the variable itself. Copy it
into a new pseudo so that the value remains correct across calls to
emit_queue. */
if (QUEUED_INSN (x) == 0)
return QUEUED_VAR (x);
return copy_to_reg (QUEUED_VAR (x));
/* If the increment has happened and a pre-increment copy exists,
use that copy. */
if (QUEUED_COPY (x) != 0)
@ -8076,7 +8081,9 @@ expand_expr (exp, target, tmode, modifier)
if (ignore)
return op0;
op0 = protect_from_queue (op0, 0);
/* Pass 1 for MODIFY, so that protect_from_queue doesn't get
clever and returns a REG when given a MEM. */
op0 = protect_from_queue (op0, 1);
/* We would like the object in memory. If it is a constant,
we can have it be statically allocated into memory. For