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re PR middle-end/33029 (libgcc2.c:1890: internal compiler error: in local_cprop_pass, at gcse.c:3236)

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PR middle-end/33029
	* lower-subreg.c (resolve_clobber): If we remove a REG_LIBCALL
	note, remove the associated REG_RETVAL note.

From-SVN: r128119
This commit is contained in:
Steven Bosscher 2007-09-05 05:31:37 +00:00 committed by Ian Lance Taylor
parent 437cc56a07
commit bda9fc3983
2 changed files with 10 additions and 3 deletions

7
gcc/ChangeLog

@ -1,3 +1,9 @@
2007-09-04 Steven Bosscher <steven@gcc.gnu.org>
PR middle-end/33029
* lower-subreg.c (resolve_clobber): If we remove a REG_LIBCALL
note, remove the associated REG_RETVAL note.
2007-09-04 Andrew Pinski <andrew_pinski@playstation.sony.com>
* config.gcc (powerpc*-*-*): Install
@ -8463,7 +8469,6 @@
PR tree-optimization/19590
* tree-vrp.c (adjust_range_with_scev): Set the range when the result
of scev is a constant.
* gcc/testsuite/gcc.dg/tree-ssa/pr19590.c: New.
2007-06-21 Kenneth Zadeck <zadeck@naturalbridge.com>

6
gcc/lower-subreg.c

@ -897,7 +897,7 @@ resolve_simple_move (rtx set, rtx insn)
static bool
resolve_clobber (rtx pat, rtx insn)
{
rtx reg;
rtx reg, note;
enum machine_mode orig_mode;
unsigned int words, i;
int ret;
@ -909,8 +909,10 @@ resolve_clobber (rtx pat, rtx insn)
/* If this clobber has a REG_LIBCALL note, then it is the initial
clobber added by emit_no_conflict_block. We were able to
decompose the register, so we no longer need the clobber. */
if (find_reg_note (insn, REG_LIBCALL, NULL_RTX) != NULL_RTX)
note = find_reg_note (insn, REG_LIBCALL, NULL_RTX);
if (note != NULL_RTX)
{
remove_retval_note (XEXP (note, 0));
delete_insn (insn);
return true;
}