derek.holloway
7502bf64a4
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90 lines
2.5 KiB
LLVM
90 lines
2.5 KiB
LLVM
; RUN: llvm-reduce -abort-on-invalid-reduction --delta-passes=simplify-unconditional-branch --test FileCheck --test-arg --check-prefix=CHECK-INTERESTINGNESS --test-arg %s --test-arg --input-file %s -o %t
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; RUN: FileCheck --check-prefix=RESULT %s < %t
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; CHECK_INTERESTINGNESS-LABEL: define void @test_phi1
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; CHECK-INTERESTINGNESS: %A = alloca i32
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; CHECK-INTERESTINGNESS: store i32 %{{P|V}}, ptr %A
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; RESULT-LABEL: define void @test_phi1
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; RESULT: entry:
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; RESULT-NEXT: %A = alloca i32
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; RESULT-NEXT: store i32 %V, ptr %A
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; RESULT-NEXT: ret void
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define void @test_phi1(i32 %V) {
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entry:
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%A = alloca i32
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br label %loop.body
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loop.body:
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%P = phi i32 [ %V, %entry ], [ %P, %loop.body ]
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store i32 %P, ptr %A
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br label %loop.body
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}
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; CHECK_INTERESTINGNESS-LABEL: define void @test_phi2
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; CHECK-INTERESTINGNESS: %A = alloca i32
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; CHECK-INTERESTINGNESS: store i32 %{{P|V}}, ptr %A
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; RESULT-LABEL: define void @test_phi2
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; RESULT: entry:
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; RESULT-NEXT: %A = alloca i32
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; RESULT-NEXT: br i1 %C, label %loop.body, label %load
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; RESULT: load:
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; RESULT-NEXT: %L = load i32, ptr %A
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; RESULT-NEXT: ret void
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; RESULT: loop.body:
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; RESULT-NEXT: %P = phi i32 [ %V, %entry ]
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; RESULT-NEXT: store i32 %P, ptr %A
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; RESULT-NEXT: ret void
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define void @test_phi2(i1 %C, i32 %V) {
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entry:
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%A = alloca i32
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br i1 %C, label %loop.body, label %load
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load:
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%L = load i32, ptr %A
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br label %loop.body
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loop.body:
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%P = phi i32 [ %V, %entry ], [ %P, %loop.body ], [ %L, %load ]
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store i32 %P, ptr %A
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br label %loop.body
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}
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; CHECK_INTERESTINGNESS-LABEL: define void @test_phi3
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; CHECK-INTERESTINGNESS: %A = alloca i32
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; CHECK-INTERESTINGNESS: store i32 %{{P|V}}, ptr %A
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; RESULT-LABEL: define void @test_phi3
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; RESULT: entry:
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; RESULT-NEXT: %A = alloca i32
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; RESULT-NEXT: switch i32 %S, label %loop.body [
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; RESULT-NEXT: i32 1, label %loop.body
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; RESULT-NEXT: i32 2, label %loop.body
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; RESULT-NEXT: i32 3, label %load
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; RESULT-NEXT: ]
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; RESULT: load:
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; RESULT-NEXT: %L = load i32, ptr %A
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; RESULT-NEXT: ret void
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; RESULT: loop.body:
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; RESULT-NEXT: %P = phi i32 [ %V, %entry ], [ %V, %entry ], [ %V, %entry ]
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; RESULT-NEXT: store i32 %P, ptr %A
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; RESULT-NEXT: ret void
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define void @test_phi3(i32 %S, i32 %V) {
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entry:
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%A = alloca i32
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switch i32 %S, label %loop.body [
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i32 1, label %loop.body
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i32 2, label %loop.body
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i32 3, label %load
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]
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load:
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%L = load i32, ptr %A
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br label %loop.body
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loop.body:
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%P = phi i32 [ %V, %entry ], [ %P, %loop.body ], [ %V, %entry ], [ %V, %entry ], [ %L, %load ]
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store i32 %P, ptr %A
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br label %loop.body
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}
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