modify constructor, use const reference

Author: vikramRH

llvm/lib/Target/AMDGPU/AMDGPUPassRegistry.def

@@ -97,7 +97,7 @@ FUNCTION_PASS_WITH_PARAMS(
 #define MACHINE_FUNCTION_ANALYSIS(NAME, CREATE_PASS)
 #endif
 
-MACHINE_FUNCTION_ANALYSIS("amdgpu-resource-usage", AMDGPUResourceUsageAnalysis(static_cast<const GCNTargetMachine *>(this)))
+MACHINE_FUNCTION_ANALYSIS("amdgpu-resource-usage", AMDGPUResourceUsageAnalysis(*static_cast<const GCNTargetMachine *>(this)))
 #undef MACHINE_FUNCTION_ANALYSIS
 
 #ifndef MACHINE_FUNCTION_PASS

llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp

@@ -103,7 +103,7 @@ AnalysisKey AMDGPUResourceUsageAnalysis::Key;
 AMDGPUResourceUsageAnalysis::Result
 AMDGPUResourceUsageAnalysis::run(MachineFunction &MF,
                                  MachineFunctionAnalysisManager &MFAM) {
-  const MCSubtargetInfo &STI = *TM->getMCSubtargetInfo();
+  const MCSubtargetInfo &STI = *TM.getMCSubtargetInfo();
 
   // By default, for code object v5 and later, track only the minimum scratch
   // size

llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.h

@@ -23,7 +23,7 @@ namespace llvm {
 
 class GCNSubtarget;
 class MachineFunction;
-class TargetMachine;
+class GCNTargetMachine;
 
 struct AMDGPUResourceUsageAnalysisImpl {
 public:
@@ -74,13 +74,13 @@ class AMDGPUResourceUsageAnalysis
   friend AnalysisInfoMixin<AMDGPUResourceUsageAnalysis>;
   static AnalysisKey Key;
 
-  const TargetMachine *TM;
+  const GCNTargetMachine &TM;
 
 public:
   using Result = AMDGPUResourceUsageAnalysisImpl::SIFunctionResourceInfo;
   Result run(MachineFunction &MF, MachineFunctionAnalysisManager &MFAM);
 
-  AMDGPUResourceUsageAnalysis(const TargetMachine *TM_) : TM(TM_) {}
+  AMDGPUResourceUsageAnalysis(const GCNTargetMachine &TM_) : TM(TM_) {}
 };
 
 } // namespace llvm