[llvm] [SPIR-V] Add Float16 support when targeting Vulkan (PR #77115)

[Natalie Chouinard via llvm-commits]

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@@ -733,11 +734,12 @@ void addInstrRequirements(const MachineInstr &MI,
     auto SC = MI.getOperand(1).getImm();
     Reqs.getAndAddRequirements(SPIRV::OperandCategory::StorageClassOperand, SC,
                                ST);
-    // If it's a type of pointer to float16, add Float16Buffer capability.
+    // If it's a type of pointer to float16 targeting OpenCL, add Float16Buffer
+    // capability.
     assert(MI.getOperand(2).isReg());
     const MachineRegisterInfo &MRI = MI.getMF()->getRegInfo();
     SPIRVType *TypeDef = MRI.getVRegDef(MI.getOperand(2).getReg());
-    if (TypeDef->getOpcode() == SPIRV::OpTypeFloat &&
+    if (ST.isOpenCLEnv() && TypeDef->getOpcode() == SPIRV::OpTypeFloat &&
         TypeDef->getOperand(1).getImm() == 16)
       Reqs.addCapability(SPIRV::Capability::Float16Buffer);
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sudonatalie wrote:

Done

https://github.com/llvm/llvm-project/pull/77115