[llvm] [SPIRV] Add reads from image buffer for shaders. (PR #115178)

[Steven Perron via llvm-commits]

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@@ -1005,6 +1011,13 @@ void addOpAccessChainReqs(const MachineInstr &Instr,
   }
 }
 
+static bool imageTypeHasUnknownFormat(SPIRVType *TypeInst) {
+  if (TypeInst->getOpcode() != SPIRV::OpTypeImage)
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s-perron wrote:

I don't want too many asserts. I renamed to `isImageWithUnknownFormat`.

https://github.com/llvm/llvm-project/pull/115178