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| author | Manman Ren <mren@apple.com> | 2012-09-17 21:30:40 +0000 |
|---|---|---|
| committer | Manman Ren <mren@apple.com> | 2012-09-17 21:30:40 +0000 |
| commit | 566540332f6fe59e6424dd0d9a06a29e6f19f790 (patch) | |
| tree | e306a3fbc15e11358ed03f5b06f8d014a328c0d8 /test/Transforms/SimplifyCFG/preserve-branchweights.ll | |
| parent | ff1547890a5af47c215bf7e1f1da85bae6aabe4d (diff) | |
| download | external_llvm-566540332f6fe59e6424dd0d9a06a29e6f19f790.zip external_llvm-566540332f6fe59e6424dd0d9a06a29e6f19f790.tar.gz external_llvm-566540332f6fe59e6424dd0d9a06a29e6f19f790.tar.bz2 | |
PGO: preserve branch-weight metadata when simplifying two branches with a common
destination in SimplifyCondBranchToCondBranch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164054 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/SimplifyCFG/preserve-branchweights.ll')
| -rw-r--r-- | test/Transforms/SimplifyCFG/preserve-branchweights.ll | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/test/Transforms/SimplifyCFG/preserve-branchweights.ll b/test/Transforms/SimplifyCFG/preserve-branchweights.ll index 1564e4e..98a47e8 100644 --- a/test/Transforms/SimplifyCFG/preserve-branchweights.ll +++ b/test/Transforms/SimplifyCFG/preserve-branchweights.ll @@ -174,16 +174,37 @@ Z: ret void } +define void @test7(i1 %a, i1 %b) { +; CHECK: @test7 +entry: + %c = or i1 %b, false + br i1 %a, label %Y, label %X, !prof !0 +; CHECK: br i1 %brmerge, label %Y, label %Z, !prof !5 + +X: + br i1 %c, label %Y, label %Z, !prof !6 + +Y: + call void @helper(i32 0) + ret void + +Z: + call void @helper(i32 1) + ret void +} + !0 = metadata !{metadata !"branch_weights", i32 3, i32 5} !1 = metadata !{metadata !"branch_weights", i32 1, i32 1} !2 = metadata !{metadata !"branch_weights", i32 1, i32 2} !3 = metadata !{metadata !"branch_weights", i32 4, i32 3, i32 2, i32 1} !4 = metadata !{metadata !"branch_weights", i32 4, i32 3, i32 2, i32 1} !5 = metadata !{metadata !"branch_weights", i32 7, i32 6, i32 5} +!6 = metadata !{metadata !"branch_weights", i32 1, i32 3} ; CHECK: !0 = metadata !{metadata !"branch_weights", i32 5, i32 11} ; CHECK: !1 = metadata !{metadata !"branch_weights", i32 1, i32 5} ; CHECK: !2 = metadata !{metadata !"branch_weights", i32 7, i32 1, i32 2} ; CHECK: !3 = metadata !{metadata !"branch_weights", i32 49, i32 12, i32 24, i32 35} ; CHECK: !4 = metadata !{metadata !"branch_weights", i32 11, i32 5} -; CHECK-NOT: !5 +; CHECK: !5 = metadata !{metadata !"branch_weights", i32 17, i32 15} +; CHECK-NOT: !6 |