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100 lines
2.6 KiB
LLVM
100 lines
2.6 KiB
LLVM
; RUN: opt -jump-threading -S < %s | FileCheck %s
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; RUN: opt -passes=jump-threading -S < %s | FileCheck %s
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define void @test() {
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; CHECK-LABEL: @test()
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bb:
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%tmp = call i32 @a()
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%tmp1 = icmp eq i32 %tmp, 1
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br i1 %tmp1, label %bb5, label %bb2
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; CHECK: br i1 %tmp1,{{.*}} !prof ![[PROF1:[0-9]+]]
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bb2: ; preds = %bb
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%tmp3 = call i32 @b()
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%tmp4 = icmp ne i32 %tmp3, 1
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br label %bb5
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; CHECK: br i1 %tmp4, {{.*}} !prof ![[PROF2:[0-9]+]]
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bb5: ; preds = %bb2, %bb
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%tmp6 = phi i1 [ false, %bb ], [ %tmp4, %bb2 ]
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br i1 %tmp6, label %bb8, label %bb7, !prof !0
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bb7: ; preds = %bb5
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call void @bar()
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br label %bb8
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bb8: ; preds = %bb7, %bb5
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ret void
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}
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define void @test_single_pred1() {
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; CHECK-LABEL: @test_single_pred1()
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bb:
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%tmp = call i32 @a()
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%tmp1 = icmp eq i32 %tmp, 1
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br i1 %tmp1, label %bb5_1, label %bb2
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; CHECK: br i1 %tmp1,{{.*}} !prof ![[PROF1:[0-9]+]]
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bb5_1:
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br label %bb5;
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bb2:
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%tmp3 = call i32 @b()
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%tmp4 = icmp ne i32 %tmp3, 1
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br label %bb5
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; CHECK: br i1 %tmp4, {{.*}} !prof ![[PROF2:[0-9]+]]
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bb5:
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%tmp6 = phi i1 [ false, %bb5_1 ], [ %tmp4, %bb2 ]
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br i1 %tmp6, label %bb8, label %bb7, !prof !0
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bb7:
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call void @bar()
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br label %bb8
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bb8:
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ret void
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}
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define void @test_single_pred2() {
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; CHECK-LABEL: @test_single_pred2()
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bb:
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%tmp = call i32 @a()
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%tmp1 = icmp eq i32 %tmp, 1
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br i1 %tmp1, label %bb5_1, label %bb2
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; CHECK: br i1 %tmp1,{{.*}} !prof ![[PROF1:[0-9]+]]
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bb5_1:
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br label %bb5_2;
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bb5_2:
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br label %bb5;
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bb2:
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%tmp3 = call i32 @b()
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%tmp4 = icmp ne i32 %tmp3, 1
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br label %bb5
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; CHECK: br i1 %tmp4, {{.*}} !prof ![[PROF2:[0-9]+]]
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bb5:
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%tmp6 = phi i1 [ false, %bb5_2 ], [ %tmp4, %bb2 ]
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br i1 %tmp6, label %bb8, label %bb7, !prof !0
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bb7:
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call void @bar()
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br label %bb8
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bb8:
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ret void
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}
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declare void @bar()
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declare i32 @a()
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declare i32 @b()
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!0 = !{!"branch_weights", i32 2146410443, i32 1073205}
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;CHECK: ![[PROF1]] = !{!"branch_weights", i32 1073205, i32 2146410443}
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;CHECK: ![[PROF2]] = !{!"branch_weights", i32 2146410443, i32 1073205}
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