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34 lines
1.2 KiB
LLVM
34 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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;RUN: opt -instcombine -S %s | FileCheck %s
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@A = extern_weak global i32, align 4
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@B = extern_weak global i32, align 4
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define i32 @foo(i1 %which) {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 true, label [[FINAL:%.*]], label [[DELAY:%.*]]
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; CHECK: delay:
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; CHECK-NEXT: br label [[FINAL]]
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; CHECK: final:
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; CHECK-NEXT: [[USE2:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ select (i1 icmp eq (i32* @A, i32* @B), i32 2, i32 1), [[DELAY]] ]
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; CHECK-NEXT: [[B7:%.*]] = mul i32 [[USE2]], 2147483647
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; CHECK-NEXT: [[C3:%.*]] = icmp eq i32 [[B7]], 0
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; CHECK-NEXT: store i1 [[C3]], i1* undef, align 1
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; CHECK-NEXT: ret i32 [[USE2]]
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;
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entry:
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br i1 true, label %final, label %delay
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delay: ; preds = %entry
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br label %final
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final: ; preds = %delay, %entry
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%use2 = phi i1 [ false, %entry ], [ icmp eq (i32* @A, i32* @B), %delay ]
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%value = select i1 %use2, i32 2, i32 1
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%B7 = mul i32 %value, 2147483647
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%C3 = icmp ule i32 %B7, 0
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store i1 %C3, i1* undef
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ret i32 %value
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}
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