46 lines
1.5 KiB
LLVM
46 lines
1.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -S -passes="print<assumptions>,gvn-sink,loop-unroll" -unroll-count=3 | FileCheck %s
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;
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; This crashed because the cached assumption was replaced and the replacement
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; was then in the cache twice.
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;
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; PR49043
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@g = external global i32
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define void @main() {
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; CHECK-LABEL: @main(
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; CHECK-NEXT: bb:
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; CHECK-NEXT: br label [[BB4_I:%.*]]
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; CHECK: bb4.i:
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; CHECK-NEXT: [[I1_I:%.*]] = load volatile i32, i32* @g, align 4
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; CHECK-NEXT: [[I32_I:%.*]] = icmp eq i32 [[I1_I]], 0
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; CHECK-NEXT: call void @llvm.assume(i1 [[I32_I]])
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; CHECK-NEXT: [[I1_I_1:%.*]] = load volatile i32, i32* @g, align 4
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; CHECK-NEXT: [[I32_I_1:%.*]] = icmp eq i32 [[I1_I_1]], 0
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; CHECK-NEXT: call void @llvm.assume(i1 [[I32_I_1]])
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; CHECK-NEXT: [[I1_I_2:%.*]] = load volatile i32, i32* @g, align 4
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; CHECK-NEXT: [[I32_I_2:%.*]] = icmp eq i32 [[I1_I_2]], 0
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; CHECK-NEXT: call void @llvm.assume(i1 [[I32_I_2]])
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; CHECK-NEXT: br label [[BB4_I]], !llvm.loop [[LOOP0:![0-9]+]]
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; CHECK: func_1.exit:
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; CHECK-NEXT: unreachable
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;
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bb:
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%i1.i = load volatile i32, i32* @g
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%i32.i = icmp eq i32 %i1.i, 0
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call void @llvm.assume(i1 %i32.i) #3
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br label %bb4.i
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bb4.i: ; preds = %bb4.i, %bb
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%i.i = load volatile i32, i32* @g
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%i3.i = icmp eq i32 %i.i, 0
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call void @llvm.assume(i1 %i3.i) #3
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br label %bb4.i
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func_1.exit: ; No predecessors!
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unreachable
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}
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declare void @llvm.assume(i1)
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