53 lines
1.5 KiB
LLVM
53 lines
1.5 KiB
LLVM
; 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 %s < %t
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; Check that no invalid reduction is produced. Remaining unreachable
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; blocks can leave instructions that dominate uses. When %bb3 was made
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; unreachable it produced this verifier error:
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; Instruction does not dominate all uses!
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; %i4 = icmp eq i32 0, 0
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; %i6 = select i1 %i4, i1 false, i1 false
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; CHECK: define void @func() {
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; CHECK-NEXT: bb:
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; CHECK-NEXT: br label %bb1
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; CHECK: bb1:
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; CHECK-NEXT: label %bb3
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; CHECK: bb2:
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; CHECK-NEXT: br i1 false, label %bb1, label %bb2
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; CHECK: bb3:
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; CHECK-NEXT: %i = phi i32 [ 0, %bb1 ]
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; CHECK: %i4 = icmp eq i32 0, 0
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; CHECK-NEXT: br label %bb5
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; CHECK: bb5:
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; CHECK-NEXT: %i6 = select i1 %i4, i1 false, i1 false
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; CHECK-NEXT: store i32 0
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; CHECK-NEXT: ret void
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define void @func() {
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bb:
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br label %bb1
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bb1: ; preds = %bb2, %bb
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br label %bb3
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bb2: ; preds = %bb2
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br i1 false, label %bb1, label %bb2
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bb3: ; preds = %bb1
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%i = phi i32 [ 0, %bb1 ]
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%i4 = icmp eq i32 0, 0
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br label %bb5
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bb5: ; preds = %bb3
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%i6 = select i1 %i4, i1 false, i1 false
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; CHECK-INTERESTINGNESS: store
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store i32 0, ptr undef, align 4
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ret void
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}
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