[clang] [llvm] [LLVM][Triple][NFCI] Add function to test for GPU offloading triples (PR #126956)

[Shilei Tian via llvm-commits]

================
@@ -1338,9 +1338,7 @@ struct InformationCache {
   bool stackIsAccessibleByOtherThreads() { return !targetIsGPU(); }
 
   /// Return true if the target is a GPU.
-  bool targetIsGPU() {
-    return TargetTriple.isAMDGPU() || TargetTriple.isNVPTX();
-  }
+  bool targetIsGPU() { return TargetTriple.isOffloadingTargetGPU(); }
----------------
shiltian wrote:

This also implies that SPIR-V is a GPU target triple, but is it true?

https://github.com/llvm/llvm-project/pull/126956