> This testcase should just go in gcc.c-torture/compile and remove the
> dg-options too.
> The main reason there is nothing specific to x86 here.
>
Thanks, here's the updated patch.
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.
---
gcc/testsuite/gcc.c-torture/compile/pr103682.c | 3 +++
gcc/tree-ssa-ccp.c | 4 ++--
2 files changed, 5 insertions(+), 2 deletions(-)
create mode 100644 gcc/testsuite/gcc.c-torture/compile/pr103682.c
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);
--
2.18.1
