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b88f0473eb
Otherwise we don't revisit an instruction that could be simplified, and when we verify, we discover there's something that changed, i.e. what we had wasn't a maximal fixpoint. Fixes PR32836. llvm-svn: 303715
46 lines
1.7 KiB
LLVM
46 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -newgvn %s | FileCheck %s
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%struct.anon = type { i32 }
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@b = external global %struct.anon
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define void @tinkywinky(i1 %patatino) {
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; CHECK-LABEL: @tinkywinky(
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; CHECK-NEXT: store i32 8, i32* null
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; CHECK-NEXT: br i1 [[PATATINO:%.*]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: br label [[L:%.*]]
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; CHECK: L:
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; CHECK-NEXT: br label [[IF_END]]
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; CHECK: if.end:
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; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* null
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; CHECK-NEXT: [[BF_LOAD1:%.*]] = load i32, i32* getelementptr inbounds (%struct.anon, %struct.anon* @b, i64 0, i32 0)
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; CHECK-NEXT: [[BF_VALUE:%.*]] = and i32 [[TMP1]], 536870911
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; CHECK-NEXT: [[BF_CLEAR:%.*]] = and i32 [[BF_LOAD1]], -536870912
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; CHECK-NEXT: [[BF_SET:%.*]] = or i32 [[BF_CLEAR]], [[BF_VALUE]]
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; CHECK-NEXT: store i32 [[BF_SET]], i32* getelementptr inbounds (%struct.anon, %struct.anon* @b, i64 0, i32 0)
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; CHECK-NEXT: br label [[LOR_END:%.*]]
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; CHECK: lor.end:
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; CHECK-NEXT: br label [[L]]
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;
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store i32 8, i32* null
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br i1 %patatino, label %if.end, label %if.then
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if.then:
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store i32 8, i32* null
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br label %L
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L:
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br label %if.end
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if.end:
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%tmp1 = load i32, i32* null
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%bf.load1 = load i32, i32* getelementptr (%struct.anon, %struct.anon* @b, i64 0, i32 0)
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%bf.value = and i32 %tmp1, 536870911
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%bf.clear = and i32 %bf.load1, -536870912
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%bf.set = or i32 %bf.clear, %bf.value
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store i32 %bf.set, i32* getelementptr (%struct.anon, %struct.anon* @b, i64 0, i32 0)
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br label %lor.end
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lor.end:
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%bf.load4 = load i32, i32* getelementptr (%struct.anon, %struct.anon* @b, i64 0, i32 0)
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%tmp4 = and i32 %bf.load4, 536870911
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%or = or i32 0, %tmp4
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br label %L
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}
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