[llvm] [SPIRV] Handle vector load/store for RWBuffer (PR #125581)

[Nathan Gauër via llvm-commits]

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@@ -748,7 +748,16 @@ Type *SPIRVEmitIntrinsics::deduceElementTypeHelper(
     if (II && II->getIntrinsicID() == Intrinsic::spv_resource_getpointer) {
       auto *ImageType = cast<TargetExtType>(II->getOperand(0)->getType());
       assert(ImageType->getTargetExtName() == "spirv.Image");
-      Ty = ImageType->getTypeParameter(0);
+      for (auto U : II->users()) {
+        if (auto *LD = dyn_cast<LoadInst>(U)) {
+          Ty = LD->getType();
+        } else if (auto *ST = dyn_cast<StoreInst>(U)) {
+          Ty = ST->getAccessType();
+        } else {
+          llvm_unreachable("Unexpected user. The only expect users of a "
+                           "resource pointer to an image are loads and stores");
+        }
+      }
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Keenuts wrote:

Seems like silently overriding the type without saying anything is just hoping a bug will be caught later

https://github.com/llvm/llvm-project/pull/125581