derek.holloway
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57 lines
1.4 KiB
LLVM
57 lines
1.4 KiB
LLVM
; Check that verification doesn't fail when reducing a function with
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; unreachable blocks.
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;
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; RUN: llvm-reduce --abort-on-invalid-reduction --delta-passes=unreachable-basic-blocks --test FileCheck --test-arg --check-prefixes=CHECK-INTERESTINGNESS --test-arg %s --test-arg --input-file %s -o %t
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; RUN: FileCheck -check-prefix=UNREACHABLE %s < %t
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; RUN: llvm-reduce --abort-on-invalid-reduction --delta-passes=basic-blocks --test FileCheck --test-arg --check-prefixes=CHECK-INTERESTINGNESS --test-arg %s --test-arg --input-file %s -o %t
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; RUN: FileCheck -check-prefix=REACHABLE %s < %t
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; CHECK-INTERESTINGNESS: test0
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; CHECK-INTERESTINGNESS: test1
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; UNREACHABLE: define void @test0() {
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; UNREACHABLE-NEXT: entry:
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; UNREACHABLE-NEXT: br label %exit
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; UNREACHABLE-NOT: unreachable
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; UNREACHABLE: exit:
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; UNREACHABLE-NEXT: ret void
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; basic-blocks cannot deal with unreachable blocks, leave it behind
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; REACHABLE: define void @test0() {
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; REACHABLE: entry:
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; REACHABLE: unreachable:
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; REACHABLE: exit:
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define void @test0() {
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entry:
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br label %exit
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unreachable: ; No predecessors!
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br label %exit
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exit:
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ret void
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}
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; UNREACHABLE: define void @test1() {
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; UNREACHABLE-NEXT: entry:
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; UNREACHABLE-NEXT: br label %exit
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; REACHABLE: define void @test1() {
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; REACHABLE: entry:
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; REACHABLE: unreachable:
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; REACHABLE: exit:
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define void @test1() {
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entry:
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br label %exit
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unreachable:
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br label %unreachable
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exit:
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ret void
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}
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