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mips.c (mips_process_sync_loop): Emit cmp result only if it is used. 

2012-06-19  Maxim Kuvyrkov  <maxim@codesourcery.com>

	* config/mips/mips.c (mips_process_sync_loop): Emit cmp result only if
	it is used.

From-SVN: r188805
This commit is contained in:
Maxim Kuvyrkov 2012-06-20 01:01:00 +00:00 committed by Maxim Kuvyrkov
parent 6399761a4a
commit ff6191481c
2 changed files with 9 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2012-06-19 Maxim Kuvyrkov <maxim@codesourcery.com>
* config/mips/mips.c (mips_process_sync_loop): Emit cmp result only if
it is used.
2012-06-19 Tom de Vries <vries@codesourcery.com>
Maxim Kuvyrkov <maxim@codesourcery.com>

4
gcc/config/mips/mips.c
View File

@ -12073,6 +12073,10 @@ mips_process_sync_loop (rtx insn, rtx *operands)
insn1 = get_attr_sync_insn1 (insn);
insn2 = get_attr_sync_insn2 (insn);
/* Don't bother setting CMP result that is never used. */
if (cmp && find_reg_note (insn, REG_UNUSED, cmp))
cmp = 0;
memmodel_attr = get_attr_sync_memmodel (insn);
switch (memmodel_attr)
{