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Diffstat (limited to 'gcc/tree-ssa-ccp.c')
| -rw-r--r-- | gcc/tree-ssa-ccp.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index 78687f7..3ba321d 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -631,6 +631,22 @@ likely_value (gimple stmt) if (has_constant_operand) all_undefined_operands = false; + if (has_undefined_operand + && code == GIMPLE_CALL + && gimple_call_internal_p (stmt)) + switch (gimple_call_internal_fn (stmt)) + { + /* These 3 builtins use the first argument just as a magic + way how to find out a decl uid. */ + case IFN_GOMP_SIMD_LANE: + case IFN_GOMP_SIMD_VF: + case IFN_GOMP_SIMD_LAST_LANE: + has_undefined_operand = false; + break; + default: + break; + } + /* If the operation combines operands like COMPLEX_EXPR make sure to not mark the result UNDEFINED if only one part of the result is undefined. */ |