35 lines
988 B
LLVM
35 lines
988 B
LLVM
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; RUN: opt -S -passes=instsimplify,instcombine < %s | FileCheck %s
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; CHECK-LABEL: define void @checkNonnullLaunder()
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define void @checkNonnullLaunder() {
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; CHECK: %[[p:.*]] = call ptr @llvm.launder.invariant.group.p0(ptr nonnull %0)
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; CHECK: call void @use(ptr nonnull %[[p]])
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entry:
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%0 = alloca i8, align 8
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%p = call ptr @llvm.launder.invariant.group.p0(ptr %0)
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%p2 = call ptr @llvm.launder.invariant.group.p0(ptr %p)
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call void @use(ptr %p2)
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ret void
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}
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; CHECK-LABEL: define void @checkNonnullStrip()
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define void @checkNonnullStrip() {
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; CHECK: %[[p:.*]] = call ptr @llvm.strip.invariant.group.p0(ptr nonnull %0)
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; CHECK: call void @use(ptr nonnull %[[p]])
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entry:
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%0 = alloca i8, align 8
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%p = call ptr @llvm.strip.invariant.group.p0(ptr %0)
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%p2 = call ptr @llvm.strip.invariant.group.p0(ptr %p)
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call void @use(ptr %p2)
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ret void
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}
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declare ptr @llvm.launder.invariant.group.p0(ptr)
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declare ptr @llvm.strip.invariant.group.p0(ptr)
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declare void @use(ptr)
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