diff --git a/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp b/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp --- a/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp +++ b/llvm/lib/Transforms/IPO/ThinLTOBitcodeWriter.cpp @@ -55,6 +55,7 @@ } } + std::string OldName = Name.str(); std::string NewName = (Name + ModuleId).str(); if (const auto *C = ExportGV.getComdat()) @@ -69,6 +70,15 @@ ImportGV->setName(NewName); ImportGV->setVisibility(GlobalValue::HiddenVisibility); } + + if (Function *F = dyn_cast(&ExportGV)) { + // Create a local alias with the original name to avoid breaking + // references from inline assembly. + GlobalAlias *A = GlobalAlias::create( + F->getValueType(), F->getAddressSpace(), GlobalValue::InternalLinkage, + OldName, F, &ExportM); + appendToCompilerUsed(ExportM, A); + } } if (!RenamedComdats.empty()) diff --git a/llvm/test/Transforms/ThinLTOBitcodeWriter/cfi-icall-static-inline-asm.ll b/llvm/test/Transforms/ThinLTOBitcodeWriter/cfi-icall-static-inline-asm.ll new file mode 100644 --- /dev/null +++ b/llvm/test/Transforms/ThinLTOBitcodeWriter/cfi-icall-static-inline-asm.ll @@ -0,0 +1,19 @@ +; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o - %s | llvm-modextract -b -n 0 -o - | llvm-dis | FileCheck %s + +; CHECK: @a = internal alias {{.*}}@a.[[HASH:[0-9a-f]+]] + +define void @b() { + %f = alloca void ()*, align 8 + ; CHECK: store{{.*}} @a.[[HASH]],{{.*}} %f + store void ()* @a, void ()** %f, align 8 + ; CHECK: %1 = call void ()* asm sideeffect "leaq a(%rip) + %1 = call void ()* asm sideeffect "leaq a(%rip), $0\0A\09", "=r,~{dirflag},~{fpsr},~{flags}"() + ret void +} + +; CHECK: define{{.*}} @a.[[HASH]](){{.*}} !type +define internal void @a() !type !0 { + ret void +} + +!0 = !{i64 0, !"typeid1"}