[llvm] [AMDGPU] Shrink to SOPK with 32-bit signed literals (PR #70263)

[Jay Foad via llvm-commits]

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@@ -159,7 +159,7 @@ bool SIShrinkInstructions::shouldShrinkTrue16(MachineInstr &MI) const {
 }
 
 bool SIShrinkInstructions::isKImmOperand(const MachineOperand &Src) const {
-  return isInt<16>(Src.getImm()) &&
+  return isInt<16>(SignExtend64(Src.getImm(), 32)) &&
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jayfoad wrote:

Could write this as `isInt<16>((int32_t)Src.getImm())` but it's a matter of taste I guess.

https://github.com/llvm/llvm-project/pull/70263