45 lines · plain
1; RUN: opt < %s -passes='pseudo-probe,sample-profile,jump-threading,pseudo-probe-update' -sample-profile-file=%S/Inputs/pseudo-probe-update.prof -S | FileCheck %s2 3declare i32 @f1()4declare i32 @f2()5declare void @f3()6 7 8;; This tests that the branch in 'merge' can be cloned up into T1.9define i32 @foo(i1 %cond, i1 %cond2) #0 {10; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 1, i32 0, i64 -1)11 br i1 %cond, label %T1, label %F112T1:13; CHECK: %v1 = call i32 @f1(), !prof ![[#PROF1:]]14 %v1 = call i32 @f1()15; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 2, i32 0, i64 -1)16;; The distribution factor -8513881372706734080 stands for 53.85%, whic is from 7/6+7.17; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 6, i32 0, i64 -8513881372706734080)18 %cond3 = icmp eq i32 %v1, 41219 br label %Merge20F1:21; CHECK: %v2 = call i32 @f2(), !prof ![[#PROF2:]]22 %v2 = call i32 @f2()23; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 4, i32 0, i64 -1)24;; The distribution factor 8513881922462547968 stands for 46.25%, which is from 6/6+7.25; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 6, i32 0, i64 8513881922462547968)26 br label %Merge27Merge:28 29 %A = phi i1 [%cond3, %T1], [%cond2, %F1]30 %B = phi i32 [%v1, %T1], [%v2, %F1]31 br i1 %A, label %T2, label %F232T2:33; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 7, i32 0, i64 -1)34 call void @f3()35 ret i32 %B36F2:37; CHECK: call void @llvm.pseudoprobe(i64 [[#GUID:]], i64 9, i32 0, i64 -1)38 ret i32 %B39}40 41; CHECK: ![[#PROF1]] = !{!"branch_weights", i32 7}42; CHECK: ![[#PROF2]] = !{!"branch_weights", i32 6}43 44attributes #0 = {"use-sample-profile"}45