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* [gcc r12-5981] Fix ICE. [PR103682]
@ 2021-12-14 23:40 hongtao Liu
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From: hongtao Liu @ 2021-12-14 23:40 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:a2a0c91b47537b16908981e206f4e42db8425eca
commit r12-5981-ga2a0c91b47537b16908981e206f4e42db8425eca
Author: liuhongt <hongtao.liu@intel.com>
Date: Tue Dec 14 09:47:08 2021 +0800
Fix ICE. [PR103682]
Check is_gimple_assign before gimple_assign_rhs_code.
gcc/ChangeLog:
PR target/103682
* tree-ssa-ccp.c (optimize_atomic_bit_test_and): Check
is_gimple_assign before gimple_assign_rhs_code.
gcc/testsuite/ChangeLog:
* gcc.c-torture/compile/pr103682.c: New test.
Diff:
---
gcc/testsuite/gcc.c-torture/compile/pr103682.c | 3 +++
gcc/tree-ssa-ccp.c | 4 ++--
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/gcc/testsuite/gcc.c-torture/compile/pr103682.c b/gcc/testsuite/gcc.c-torture/compile/pr103682.c
new file mode 100644
index 00000000000..5ee4b21f7e6
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr103682.c
@@ -0,0 +1,3 @@
+int bug(unsigned *ready, unsigned u) {
+ return __atomic_fetch_and (ready, ~u, 0) & u;
+}
diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c
index 9e12da8f011..a5b1f60f979 100644
--- a/gcc/tree-ssa-ccp.c
+++ b/gcc/tree-ssa-ccp.c
@@ -3703,8 +3703,8 @@ optimize_atomic_bit_test_and (gimple_stmt_iterator *gsip,
g = SSA_NAME_DEF_STMT (mask);
}
- rhs_code = gimple_assign_rhs_code (g);
- if (rhs_code != LSHIFT_EXPR
+ if (!is_gimple_assign (g)
+ || gimple_assign_rhs_code (g) != LSHIFT_EXPR
|| !integer_onep (gimple_assign_rhs1 (g)))
return;
bit = gimple_assign_rhs2 (g);
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