[AMDGPU] Simplify alias stripping to use utility function

jhuber6 · jhuber6 · commit 351a4b27da7d · 2024-07-17T10:11:53.000-05:00
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp b/llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp
@@ -65,10 +65,7 @@ static const Function *getCalleeFunction(const MachineOperand &Op) {
     assert(Op.getImm() == 0);
     return nullptr;
   }
-  const GlobalValue *GV = Op.getGlobal();
-  while (auto *GA = dyn_cast<GlobalAlias>(GV))
-    GV = cast<GlobalValue>(GA->getOperand(0));
-  return cast<Function>(GV);
+  return cast<Function>(Op.getGlobal()->stripPointerCastsAndAliases());
 }
 
 static bool hasAnyNonFlatUseOfReg(const MachineRegisterInfo &MRI,

Original file line number	Diff line number	Diff line change
`@@ -65,10 +65,7 @@ static const Function *getCalleeFunction(const MachineOperand &Op) {`
`65`	`65`	`assert(Op.getImm() == 0);`
`66`	`66`	`return nullptr;`
`67`	`67`	`}`
`68`		`- const GlobalValue *GV = Op.getGlobal();`
`69`		`- while (auto *GA = dyn_cast<GlobalAlias>(GV))`
`70`		`- GV = cast<GlobalValue>(GA->getOperand(0));`
`71`		`- return cast<Function>(GV);`
	`68`	`+ return cast<Function>(Op.getGlobal()->stripPointerCastsAndAliases());`
`72`	`69`	`}`
`73`	`70`
`74`	`71`	`static bool hasAnyNonFlatUseOfReg(const MachineRegisterInfo &MRI,`