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| author | Nick Lewycky <nicholas@mxc.ca> | 2011-12-26 20:54:14 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2011-12-26 20:54:14 +0000 |
| commit | 8d302df4a43e95c89de272adff79c71c61249990 (patch) | |
| tree | 4aa77c903124d350e4a1b7ae16c818314e350ad9 /llvm/test/Transforms/SimplifyCFG/preserve-branchweights.ll | |
| parent | e87d54c817d1c71e82d92632cdc9948f4c460e03 (diff) | |
| download | bcm5719-llvm-8d302df4a43e95c89de272adff79c71c61249990.tar.gz bcm5719-llvm-8d302df4a43e95c89de272adff79c71c61249990.zip | |
Update the branch weight metadata when reversing the order of a branch.
llvm-svn: 147280
Diffstat (limited to 'llvm/test/Transforms/SimplifyCFG/preserve-branchweights.ll')
| -rw-r--r-- | llvm/test/Transforms/SimplifyCFG/preserve-branchweights.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SimplifyCFG/preserve-branchweights.ll b/llvm/test/Transforms/SimplifyCFG/preserve-branchweights.ll new file mode 100644 index 00000000000..dab0d7cdf99 --- /dev/null +++ b/llvm/test/Transforms/SimplifyCFG/preserve-branchweights.ll @@ -0,0 +1,26 @@ +; RUN: opt -simplifycfg -S -o - < %s | FileCheck %s + +declare void @helper(i32) + +define void @test1(i1 %a, i1 %b) { +; CHECK @test1 +entry: + br i1 %a, label %Y, label %X, !prof !0 +; CHECK: br i1 %or.cond, label %Z, label %Y, !prof !0 + +X: + %c = or i1 %b, false + br i1 %c, label %Z, label %Y + +Y: + call void @helper(i32 0) + ret void + +Z: + call void @helper(i32 1) + ret void +} + +!0 = metadata !{metadata !"branch_weights", i32 1, i32 2} + +; CHECK: !0 = metadata !{metadata !"branch_weights", i32 2, i32 1} |
