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re PR target/64268 (bootstrap failure (ICE in wide_int_to_tree, at tree.c:1438) on powerpc in libgcc, stage2)

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PR target/64268
	* combine.c (try_combine): Immediately return if any of I0,I1,I2
	are the same insn.

From-SVN: r218971
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Segher Boessenkool 2014-12-19 20:55:32 +01:00 committed by Segher Boessenkool
parent 1f0858d762
commit 3eb239f48b
2 changed files with 11 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,9 @@
2014-12-19 Segher Boessenkool <segher@kernel.crashing.org>
PR target/64268
* combine.c (try_combine): Immediately return if any of I0,I1,I2
are the same insn.
2014-12-19 Alan Lawrence <alan.lawrence@arm.com>
* config/aarch64/aarch64.c (<LOGICAL:optab>_one_cmpl<mode>3):

5
gcc/combine.c
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@ -2588,6 +2588,11 @@ try_combine (rtx_insn *i3, rtx_insn *i2, rtx_insn *i1, rtx_insn *i0,
rtx new_other_notes;
int i;
/* Immediately return if any of I0,I1,I2 are the same insn (I3 can
never be). */
if (i1 == i2 || i0 == i2 || (i0 && i0 == i1))
return 0;
/* Only try four-insn combinations when there's high likelihood of
success. Look for simple insns, such as loads of constants or
binary operations involving a constant. */