[llvm] [SPIRV] Add explicit layout (PR #135789)

[Nathan Gauër via llvm-commits]

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@@ -25,6 +25,43 @@
 
 using namespace llvm;
 
+static bool typesAreLogicallyCompatible(const SPIRVType *Ty1,
+                                        const SPIRVType *Ty2,
+                                        SPIRVGlobalRegistry &GR) {
+  if (Ty1 == Ty2) {
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Keenuts wrote:

Does 2 OpRuntimeArray are considered to match?

https://github.com/llvm/llvm-project/pull/135789