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-rw-r--r--llvm/lib/Transforms/IPO/ArgumentPromotion.cpp2
-rw-r--r--llvm/test/Transforms/ArgumentPromotion/dbg2.ll31
2 files changed, 33 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp b/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
index 30763f26971..feda27424c2 100644
--- a/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
+++ b/llvm/lib/Transforms/IPO/ArgumentPromotion.cpp
@@ -217,6 +217,7 @@ doPromotion(Function *F, SmallPtrSetImpl<Argument *> &ArgsToPromote,
F->getName());
NF->copyAttributesFrom(F);
NF->copyMetadata(F, 0);
+ F->clearMetadata();
LLVM_DEBUG(dbgs() << "ARG PROMOTION: Promoting to:" << *NF << "\n"
<< "From: " << *F);
@@ -471,6 +472,7 @@ doPromotion(Function *F, SmallPtrSetImpl<Argument *> &ArgsToPromote,
std::advance(I2, ArgIndices.size());
}
+ assert(F->isDeclaration());
return NF;
}
diff --git a/llvm/test/Transforms/ArgumentPromotion/dbg2.ll b/llvm/test/Transforms/ArgumentPromotion/dbg2.ll
new file mode 100644
index 00000000000..ecec7d7a5dc
--- /dev/null
+++ b/llvm/test/Transforms/ArgumentPromotion/dbg2.ll
@@ -0,0 +1,31 @@
+; RUN: opt < %s -argpromotion -instcombine -S | FileCheck %s
+
+%f_ty = type void (i8*)*
+
+define void @foo() {
+entry:
+ %f_p = getelementptr inbounds %f_ty, %f_ty* null, i32 0
+ store %f_ty @bar, %f_ty* %f_p, align 1
+ ret void
+}
+
+define internal void @bar(i8*) !dbg !1 {
+entry:
+ ret void
+}
+
+; The new copy should get the !dbg metadata
+; CHECK: define internal void @bar() !dbg
+; The old copy should now be a declaration without any !dbg metadata
+; CHECK-NOT: declare dso_local void @0(i8*) !dbg
+; CHECK: declare dso_local void @0(i8*)
+
+!llvm.dbg.cu = !{}
+!llvm.module.flags = !{!0}
+
+!0 = !{i32 2, !"Debug Info Version", i32 3}
+!1 = distinct !DISubprogram(name: "bar", scope: !2, file: !2, line: 14, type: !3, scopeLine: 14, spFlags: DISPFlagDefinition, unit: !5)
+!2 = !DIFile(filename: "foo.c", directory: "/bar")
+!3 = !DISubroutineType(types: !4)
+!4 = !{}
+!5 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "My Compiler", isOptimized: false, runtimeVersion: 0, emissionKind: LineTablesOnly, nameTableKind: None)
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