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| author | Will Dietz <wdietz2@illinois.edu> | 2012-12-15 01:39:14 +0000 |
|---|---|---|
| committer | Will Dietz <wdietz2@illinois.edu> | 2012-12-15 01:39:14 +0000 |
| commit | ddd282addbce7d6564de12fe74235fde9cd6f836 (patch) | |
| tree | 7f2140abcd0a4b7cebf1cf0ad6b8c75c5eed2e9b /clang/test/CodeGen/catch-undef-behavior.c | |
| parent | 3cb4c7d6a0efbcbc87e1603b3b6edcdded1e11d0 (diff) | |
| download | bcm5719-llvm-ddd282addbce7d6564de12fe74235fde9cd6f836.tar.gz bcm5719-llvm-ddd282addbce7d6564de12fe74235fde9cd6f836.zip | |
[ubsan] Emit branch weight metadata to hint towards common case.
Results in better block placement that helps close the
performance gap when making ubsan checks recoverable.
llvm-svn: 170263
Diffstat (limited to 'clang/test/CodeGen/catch-undef-behavior.c')
| -rw-r--r-- | clang/test/CodeGen/catch-undef-behavior.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/clang/test/CodeGen/catch-undef-behavior.c b/clang/test/CodeGen/catch-undef-behavior.c index 088e3a9e0f0..302ff2ee497 100644 --- a/clang/test/CodeGen/catch-undef-behavior.c +++ b/clang/test/CodeGen/catch-undef-behavior.c @@ -38,7 +38,7 @@ void foo() { // CHECK-NEXT: %[[CHECK2:.*]] = icmp eq i64 %[[MISALIGN]], 0 // CHECK: %[[OK:.*]] = and i1 %[[CHECK01]], %[[CHECK2]] - // CHECK-NEXT: br i1 %[[OK]] + // CHECK-NEXT: br i1 %[[OK]], {{.*}} !prof ![[WEIGHT_MD:.*]] // CHECK: %[[ARG:.*]] = ptrtoint {{.*}} %[[PTR]] to i64 // CHECK-NEXT: call void @__ubsan_handle_type_mismatch_abort(i8* bitcast ({{.*}} @[[LINE_100]] to i8*), i64 %[[ARG]]) noreturn nounwind @@ -85,7 +85,7 @@ int lsh_overflow(int a, int b) { // CHECK: %[[SHIFTED_OUT_WIDTH:.*]] = sub nuw nsw i32 31, %[[RHS]] // CHECK-NEXT: %[[SHIFTED_OUT:.*]] = lshr i32 %[[LHS:.*]], %[[SHIFTED_OUT_WIDTH]] // CHECK-NEXT: %[[NO_OVERFLOW:.*]] = icmp eq i32 %[[SHIFTED_OUT]], 0 - // CHECK-NEXT: br i1 %[[NO_OVERFLOW]] + // CHECK-NEXT: br i1 %[[NO_OVERFLOW]], {{.*}} !prof ![[WEIGHT_MD]] // CHECK: %[[ARG1:.*]] = zext // CHECK-NEXT: %[[ARG2:.*]] = zext @@ -254,3 +254,5 @@ _Bool sour_bool(_Bool *p) { // CHECK: call void @__ubsan_handle_load_invalid_value_abort(i8* bitcast ({{.*}}), i64 {{.*}}) return *p; } + +// CHECK: ![[WEIGHT_MD]] = metadata !{metadata !"branch_weights", i32 1048575, i32 1} |
