[PATCH] D29224: [AMDGPU] Gram MCSubtargetInfo from TargetMachine instead of constructing it

[Konstantin Zhuravlyov via Phabricator via llvm-commits]

kzhuravl created this revision.
Herald added a reviewer: tstellarAMD.
Herald added subscribers: tpr, tony-tye, yaxunl, nhaehnle, wdng, arsenm.

https://reviews.llvm.org/D29224

Files:
  lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp


Index: lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
===================================================================
--- lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
+++ lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
@@ -103,17 +103,12 @@
   if (TM.getTargetTriple().getOS() != Triple::AMDHSA)
     return;
 
-  // Need to construct an MCSubtargetInfo here in case we have no functions
-  // in the module.
-  std::unique_ptr<MCSubtargetInfo> STI(TM.getTarget().createMCSubtargetInfo(
-        TM.getTargetTriple().str(), TM.getTargetCPU(),
-        TM.getTargetFeatureString()));
-
   AMDGPUTargetStreamer *TS =
       static_cast<AMDGPUTargetStreamer *>(OutStreamer->getTargetStreamer());
 
   TS->EmitDirectiveHSACodeObjectVersion(2, 1);
 
+  const MCSubtargetInfo *STI = TM.getMCSubtargetInfo();
   AMDGPU::IsaVersion ISA = AMDGPU::getIsaVersion(STI->getFeatureBits());
   TS->EmitDirectiveHSACodeObjectISA(ISA.Major, ISA.Minor, ISA.Stepping,
                                     "AMD", "AMDGPU");


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