Set MAttrs in LTO mode

Summary: Without this patch, MAttrs are not set.

Patch by Yin Ma

Reviewers: espindola, MaskRay, ruiu, pcc

Reviewed By: MaskRay, pcc

Subscribers: pcc, emaste, sbc100, inglorion, arichardson, aheejin, steven_wu, llvm-commits

Differential Revision: https://reviews.llvm.org/D53446

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@345884 91177308-0d34-0410-b5e6-96231b3b80d8

Author: MaskRay

COFF/LTO.cpp

@@ -60,6 +60,8 @@ static std::unique_ptr<lto::LTO> createLTO() {
   C.DisableVerify = true;
   C.DiagHandler = diagnosticHandler;
   C.OptLevel = Config->LTOO;
+  C.MAttrs = GetMAttrs();
+
   if (Config->SaveTemps)
     checkError(C.addSaveTemps(std::string(Config->OutputFile) + ".",
                               /*UseInputModulePath*/ true));

Common/TargetOptionsCommandFlags.cpp

@@ -32,3 +32,4 @@ llvm::Optional<llvm::CodeModel::Model> lld::GetCodeModelFromCMModel() {
 }
 
 std::string lld::GetCPUStr() { return ::getCPUStr(); }
+std::vector<std::string> lld::GetMAttrs() { return ::MAttrs; }

ELF/LTO.cpp

@@ -88,6 +88,7 @@ static lto::Config createConfig() {
   C.DiagHandler = diagnosticHandler;
   C.OptLevel = Config->LTOO;
   C.CPU = GetCPUStr();
+  C.MAttrs = GetMAttrs();
 
   // Set up a custom pipeline if we've been asked to.
   C.OptPipeline = Config->LTONewPmPasses;

include/lld/Common/TargetOptionsCommandFlags.h

@@ -19,4 +19,5 @@ namespace lld {
 llvm::TargetOptions InitTargetOptionsFromCodeGenFlags();
 llvm::Optional<llvm::CodeModel::Model> GetCodeModelFromCMModel();
 std::string GetCPUStr();
+std::vector<std::string> GetMAttrs();
 }

wasm/LTO.cpp

@@ -55,6 +55,7 @@ static std::unique_ptr<lto::LTO> createLTO() {
   C.DisableVerify = Config->DisableVerify;
   C.DiagHandler = diagnosticHandler;
   C.OptLevel = Config->LTOO;
+  C.MAttrs = GetMAttrs();
 
   if (Config->SaveTemps)
     checkError(C.addSaveTemps(Config->OutputFile.str() + ".",