[llvm] [SPIRV] Implement translation for llvm.modf.* intrinsics (PR #147556)

[Victor Lomuller via llvm-commits]

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@@ -995,4 +995,26 @@ unsigned getArrayComponentCount(const MachineRegisterInfo *MRI,
   return foldImm(ResType->getOperand(2), MRI);
 }
 
+MachineBasicBlock::iterator
+getPosForOpVariableWithinBlock(MachineBasicBlock &BB) {
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Naghasan wrote:

```suggestion
getFirstValidInstructionInsertPoint(MachineBasicBlock &BB) {
```

https://github.com/llvm/llvm-project/pull/147556