[clang] [llvm] [openmp] [PGO][OpenMP] Instrumentation for GPU devices (PR #76587)

[Ethan Luis McDonough via cfe-commits]

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@@ -2067,6 +2067,10 @@ Constant *ConstantExpr::getBitCast(Constant *C, Type *DstTy,
 
 Constant *ConstantExpr::getAddrSpaceCast(Constant *C, Type *DstTy,
                                          bool OnlyIfReduced) {
+  // Skip cast if types are identical
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EthanLuisMcDonough wrote:

`CastInst::castIsValid` returns false for addrspace casts if two pointers share the same addrspace.

https://github.com/llvm/llvm-project/blob/2de269a641e4ffbb7a44e559c4c0a91bb66df823/llvm/lib/IR/Instructions.cpp#L3802-L3805

https://github.com/llvm/llvm-project/pull/76587