46 lines
1.6 KiB
LLVM
46 lines
1.6 KiB
LLVM
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; RUN: opt < %s -passes='pseudo-probe,sample-profile,jump-threading,pseudo-probe-update' -sample-profile-file=%S/Inputs/pseudo-probe-update.prof -S | FileCheck %s
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declare i32 @f1()
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declare i32 @f2()
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declare void @f3()
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;; This tests that the branch in 'merge' can be cloned up into T1.
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define i32 @foo(i1 %cond, i1 %cond2) #0 {
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 1, i32 0, i64 -1)
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br i1 %cond, label %T1, label %F1
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T1:
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; CHECK: %v1 = call i32 @f1(), !prof ![[#PROF1:]]
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%v1 = call i32 @f1()
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 2, i32 0, i64 -1)
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;; The distribution factor -8513881372706734080 stands for 53.85%, whic is from 7/6+7.
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 4, i32 0, i64 -8513881372706734080)
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%cond3 = icmp eq i32 %v1, 412
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br label %Merge
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F1:
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; CHECK: %v2 = call i32 @f2(), !prof ![[#PROF2:]]
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%v2 = call i32 @f2()
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 3, i32 0, i64 -1)
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;; The distribution factor 8513881922462547968 stands for 46.25%, which is from 6/6+7.
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 4, i32 0, i64 8513881922462547968)
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br label %Merge
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Merge:
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%A = phi i1 [%cond3, %T1], [%cond2, %F1]
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%B = phi i32 [%v1, %T1], [%v2, %F1]
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br i1 %A, label %T2, label %F2
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T2:
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 5, i32 0, i64 -1)
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call void @f3()
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ret i32 %B
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F2:
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; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 6, i32 0, i64 -1)
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ret i32 %B
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}
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; CHECK: ![[#PROF1]] = !{!"branch_weights", i32 7}
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; CHECK: ![[#PROF2]] = !{!"branch_weights", i32 6}
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attributes #0 = {"use-sample-profile"}
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