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a3857d3d9a
RAUW of a global variable with a local variable in function F, if function local metadata M in function G was using the global then M would become function-local to both F and G, which is not allowed. See the testcase for an example. Fixed by detecting this situation and zapping the metadata operand when it occurs. llvm-svn: 103007
28 lines
787 B
LLVM
28 lines
787 B
LLVM
; RUN: opt -S -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) {
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; CHECK: @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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call void @llvm.dbg.value(metadata !{i8*** @G, i32 %x}, i64 0, metadata !1)
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; CHECK: call void @llvm.dbg.value(metadata !{null, i32 %x}, i64 0, metadata !1)
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ret void
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}
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declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
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!named = !{!0}
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!0 = metadata !{i8*** @G}
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; CHECK: !0 = metadata !{null}
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!1 = metadata !{i8* null}
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