8ebb3eac02
The legacy PM is deprecated, so update a bunch of lit tests running opt to use the new PM syntax when specifying the pipeline. In this patch focus has been put on test cases for ConstantMerge, ConstraintElimination, CorrelatedValuePropagation, GlobalDCE, GlobalOpt, SCCP, TailCallElim and PredicateInfo. Differential Revision: https://reviews.llvm.org/D114516
33 lines
1.0 KiB
LLVM
33 lines
1.0 KiB
LLVM
; RUN: opt -S -passes=globalopt < %s | FileCheck %s
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; PR6112 - When globalopt does RAUW(@G, %G), the metadata reference should drop
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; to null. Function local metadata that references @G from a different function
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; to that containing %G should likewise drop to null.
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@G = internal global i8** null
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define i32 @main(i32 %argc, i8** %argv) norecurse {
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; CHECK-LABEL: @main(
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; CHECK: %G = alloca
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store i8** %argv, i8*** @G
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ret i32 0
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}
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define void @foo(i32 %x) {
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; Note: these arguments look like MDNodes, but they're really syntactic sugar
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; for 'MetadataAsValue::get(ValueAsMetadata::get(Value*))'. When @G drops to
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; null, the ValueAsMetadata instance gets replaced by metadata !{}, or
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; MDNode::get({}).
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call void @llvm.foo(metadata i8*** @G, metadata i32 %x)
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; CHECK: call void @llvm.foo(metadata ![[EMPTY:[0-9]+]], metadata i32 %x)
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ret void
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}
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declare void @llvm.foo(metadata, metadata) nounwind readnone
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!named = !{!0}
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; CHECK: !named = !{![[NULL:[0-9]+]]}
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!0 = !{i8*** @G}
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; CHECK-DAG: ![[NULL]] = distinct !{null}
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; CHECK-DAG: ![[EMPTY]] = !{}
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