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re PR rtl-optimization/52528 (combine bug (powerpc testcase)) 

2012-03-10  Chung-Lin Tang  <cltang@codesourcery.com>

	PR rtl-optimization/52528
	* combine.c (can_combine_p): Add setting of subst_low_luid
	before call to expand_field_assignment().

From-SVN: r185175
This commit is contained in:
Chung-Lin Tang 2012-03-10 14:57:30 +00:00 committed by Chung-Lin Tang
parent f8627856b4
commit 30823ba60c
2 changed files with 10 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-03-10 Chung-Lin Tang <cltang@codesourcery.com>
PR rtl-optimization/52528
* combine.c (can_combine_p): Add setting of subst_low_luid
before call to expand_field_assignment().
2012-03-09 Sandra Loosemore <sandra@codesourcery.com> 2012-03-09 Sandra Loosemore <sandra@codesourcery.com>
* doc/invoke.texi: Use correct names/markup for "GCC", "GDB", "ld", * doc/invoke.texi: Use correct names/markup for "GCC", "GDB", "ld",

4
gcc/combine.c
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@ -1822,6 +1822,10 @@ can_combine_p (rtx insn, rtx i3, rtx pred ATTRIBUTE_UNUSED,
if (set == 0) if (set == 0)
return 0; return 0;
/* The simplification in expand_field_assignment may call back to
get_last_value, so set safe guard here. */
subst_low_luid = DF_INSN_LUID (insn);
set = expand_field_assignment (set); set = expand_field_assignment (set);
src = SET_SRC (set), dest = SET_DEST (set); src = SET_SRC (set), dest = SET_DEST (set);