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* gcse.c (hoist_code): Generate new pseudo for every new set insn. 

From-SVN: r162591
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Maxim Kuvyrkov 2010-07-27 19:36:31 +00:00 committed by Maxim Kuvyrkov
parent ce4c0015a1
commit 3d489bc712
2 changed files with 10 additions and 2 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2010-07-27 Maxim Kuvyrkov <maxim@codesourcery.com>
* gcse.c (hoist_code): Generate new pseudo for every new set insn.
2010-07-27 Maxim Kuvyrkov <maxim@codesourcery.com>
PR rtl-optimization/40956

8
gcc/gcse.c
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@ -4581,8 +4581,12 @@ hoist_code (void)
/* Create a pseudo-reg to store the result of reaching
expressions into. Get the mode for the new pseudo
from the mode of the original destination pseudo. */
if (expr->reaching_reg == NULL)
from the mode of the original destination pseudo.
It is important to use new pseudos whenever we
emit a set. This will allow reload to use
rematerialization for such registers. */
if (!insn_inserted_p)
expr->reaching_reg
= gen_reg_rtx_and_attrs (SET_DEST (set));