[llvm] [AMDGPU] Fix GCNRewritePartialRegUses pass: vector regclass is selected instead of scalar. (PR #69957)

[Carl Ritson via llvm-commits]

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@@ -425,29 +414,41 @@ bool GCNRewritePartialRegUses::rewriteReg(Register Reg) const {
     return false;
 
   for (MachineOperand &MO : Range) {
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perlfu wrote:

Presumably this could be:
`if (llvm::any_of(Range, ...`

It seems testing this here is just an optimisation?
i.e. logically it could be folded into the loop below.

https://github.com/llvm/llvm-project/pull/69957