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combine.c (simplify_set): Do not clear out undobuf.other_insn already set elsewhere.

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* combine.c (simplify_set): Do not clear out undobuf.other_insn
	already set elsewhere.

From-SVN: r72602
This commit is contained in:
Ulrich Weigand 2003-10-17 13:36:48 +00:00 committed by Ulrich Weigand
parent b1177d691d
commit 2051c89780
2 changed files with 9 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2003-10-17 Ulrich Weigand <uweigand@de.ibm.com>
* combine.c (simplify_set): Do not clear out undobuf.other_insn
already set elsewhere.
2003-10-17 Kelley Cook <kcook@gcc.gnu.org>
* config/i386/i386.c (ix86_expand_prologue): Use

8
gcc/combine.c
View File

@ -5084,10 +5084,12 @@ simplify_set (rtx x)
undobuf.other_insn. */
if (new_code != old_code)
{
int other_changed_previously = other_changed;
unsigned HOST_WIDE_INT mask;
SUBST (*cc_use, gen_rtx_fmt_ee (new_code, GET_MODE (*cc_use),
dest, const0_rtx));
other_changed = 1;
/* If the only change we made was to change an EQ into an NE or
vice versa, OP0 has only one bit that might be nonzero, and OP1
@ -5097,7 +5099,7 @@ simplify_set (rtx x)
if (((old_code == NE && new_code == EQ)
|| (old_code == EQ && new_code == NE))
&& ! other_changed && op1 == const0_rtx
&& ! other_changed_previously && op1 == const0_rtx
&& GET_MODE_BITSIZE (GET_MODE (op0)) <= HOST_BITS_PER_WIDE_INT
&& exact_log2 (mask = nonzero_bits (op0, GET_MODE (op0))) >= 0)
{
@ -5107,13 +5109,11 @@ simplify_set (rtx x)
&& ! check_asm_operands (pat)))
{
PUT_CODE (*cc_use, old_code);
other_insn = 0;
other_changed = 0;
op0 = gen_binary (XOR, GET_MODE (op0), op0, GEN_INT (mask));
}
}
other_changed = 1;
}
if (other_changed)