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authorRichard Sandiford <richard.sandiford@arm.com>2023-02-01 09:53:50 +0000
committerRichard Sandiford <richard.sandiford@arm.com>2023-02-01 09:53:50 +0000
commit3cef9dca57ba70576dc387c40e600f00de5d55de (patch)
tree3aa8896679b3cdd5f533924484b50df16f14c7c8 /gcc
parentf3b1af49702a3d1989fbe512b004a129f2c50e07 (diff)
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compare-elim: Fix an RTL checking failure
find_flags_uses_in_insn used SET_SRC without first checking for a SET. This showed up as an RTL checking failure in g++.dg/torture/pr90994.C on aarch64. gcc/ * compare-elim.cc (find_flags_uses_in_insn): Guard use of SET_SRC.
Diffstat (limited to 'gcc')
-rw-r--r--gcc/compare-elim.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/compare-elim.cc b/gcc/compare-elim.cc
index 5cbd2c02..c59dc0c 100644
--- a/gcc/compare-elim.cc
+++ b/gcc/compare-elim.cc
@@ -254,7 +254,8 @@ find_flags_uses_in_insn (struct comparison *cmp, rtx_insn *insn)
x = PATTERN (insn);
if (GET_CODE (x) == PARALLEL)
x = XVECEXP (x, 0, 0);
- x = SET_SRC (x);
+ if (GET_CODE (x) == SET)
+ x = SET_SRC (x);
if (GET_CODE (x) == IF_THEN_ELSE)
x = XEXP (x, 0);
if (COMPARISON_P (x)