[llvm] [AMDGPU] Fix a crash when a bool variable is used in inline asm (PR #171004)

[Matt Arsenault via llvm-commits]

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@@ -17670,6 +17670,11 @@ SITargetLowering::getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI_,
       break;
     case 'v':
       switch (BitWidth) {
+      case 1:
+        RC = Subtarget->has1024AddressableVGPRs()
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arsenm wrote:

Return null, that's what the other error cases do 

https://github.com/llvm/llvm-project/pull/171004