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Fix ICE. [PR103682]

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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.
This commit is contained in:
liuhongt 2021-12-14 09:47:08 +08:00
parent 9a4b4514bd
commit a2a0c91b47
2 changed files with 5 additions and 2 deletions
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3
gcc/testsuite/gcc.c-torture/compile/pr103682.c Normal file
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@ -0,0 +1,3 @@
int bug(unsigned *ready, unsigned u) {
return __atomic_fetch_and (ready, ~u, 0) & u;
}

4
gcc/tree-ssa-ccp.c
View file

@ -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);