third_party/llvm-7.0/llvm/test/Transforms/JumpThreading/threading_prof1.ll

; RUN: opt -jump-threading -S < %s | FileCheck %s
; RUN: opt -passes=jump-threading -S < %s | FileCheck %s

define void @test() {
; CHECK-LABEL: @test()
bb:
  %tmp = call i32 @a()
  %tmp1 = icmp eq i32 %tmp, 1
  br i1 %tmp1, label %bb5, label %bb2
; CHECK: br i1 %tmp1,{{.*}} !prof ![[PROF1:[0-9]+]]

bb2:                                              ; preds = %bb
  %tmp3 = call i32 @b()
  %tmp4 = icmp ne i32 %tmp3, 1
  br label %bb5
; CHECK: br i1 %tmp4, {{.*}} !prof ![[PROF2:[0-9]+]]

bb5:                                              ; preds = %bb2, %bb
  %tmp6 = phi i1 [ false, %bb ], [ %tmp4, %bb2 ]
  br i1 %tmp6, label %bb8, label %bb7, !prof !0

bb7:                                              ; preds = %bb5
  call void @bar()
  br label %bb8

bb8:                                              ; preds = %bb7, %bb5
  ret void
}

define void @test_single_pred1() {
; CHECK-LABEL: @test_single_pred1()
bb:
  %tmp = call i32 @a()
  %tmp1 = icmp eq i32 %tmp, 1
  br i1 %tmp1, label %bb5_1, label %bb2
; CHECK: br i1 %tmp1,{{.*}} !prof ![[PROF1:[0-9]+]]

bb5_1:                                             
  br label %bb5;

bb2:                                              
  %tmp3 = call i32 @b()
  %tmp4 = icmp ne i32 %tmp3, 1
  br label %bb5
; CHECK: br i1 %tmp4, {{.*}} !prof ![[PROF2:[0-9]+]]

bb5:                                             
  %tmp6 = phi i1 [ false, %bb5_1 ], [ %tmp4, %bb2 ]
  br i1 %tmp6, label %bb8, label %bb7, !prof !0

bb7:                                            
  call void @bar()
  br label %bb8

bb8:                                           
  ret void
}

define void @test_single_pred2() {
; CHECK-LABEL: @test_single_pred2()
bb:
  %tmp = call i32 @a()
  %tmp1 = icmp eq i32 %tmp, 1
  br i1 %tmp1, label %bb5_1, label %bb2
; CHECK: br i1 %tmp1,{{.*}} !prof ![[PROF1:[0-9]+]]

bb5_1:                                             
  br label %bb5_2;

bb5_2:                                             
  br label %bb5;

bb2:                          
  %tmp3 = call i32 @b()
  %tmp4 = icmp ne i32 %tmp3, 1
  br label %bb5
; CHECK: br i1 %tmp4, {{.*}} !prof ![[PROF2:[0-9]+]]

bb5:                         
  %tmp6 = phi i1 [ false, %bb5_2 ], [ %tmp4, %bb2 ]
  br i1 %tmp6, label %bb8, label %bb7, !prof !0

bb7:                        
  call void @bar()
  br label %bb8

bb8:                       
  ret void
}

declare void @bar()

declare i32 @a()

declare i32 @b()

!0 = !{!"branch_weights", i32 2146410443, i32 1073205}
;CHECK: ![[PROF1]] = !{!"branch_weights", i32 1073205, i32 2146410443}
;CHECK: ![[PROF2]] = !{!"branch_weights", i32 2146410443, i32 1073205}