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

Fixes SWDEV-570184.

Author: shiltian

llvm/lib/Target/AMDGPU/SIISelLowering.cpp

@@ -17684,6 +17684,8 @@ SITargetLowering::getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI_,
       break;
     case 'v':
       switch (BitWidth) {
+      case 1:
+        return std::pair(0U, nullptr);
       case 16:
         RC = Subtarget->useRealTrue16Insts() ? &AMDGPU::VGPR_16RegClass
                                              : &AMDGPU::VGPR_32_Lo256RegClass;
@@ -17701,6 +17703,8 @@ SITargetLowering::getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI_,
       if (!Subtarget->hasMAIInsts())
         break;
       switch (BitWidth) {
+      case 1:
+        return std::pair(0U, nullptr);
       case 16:
         RC = &AMDGPU::AGPR_32RegClass;
         break;

llvm/test/CodeGen/AMDGPU/inlineasm-mismatched-size-error.ll

@@ -153,3 +153,27 @@ define <4 x i32> @misaligned_sgpr_4xi32_out_2() {
   %asm = call <4 x i32> asm sideeffect "; def $0", "={s[2:5]}"()
   ret <4 x i32> %asm
 }
+
+; ERR: error: couldn't allocate input reg for constraint 'v'
+define void @i1_used_as_vgpr_operand(ptr %p, i1 %b) {
+  tail call void asm sideeffect "global_store_byte $0, $1, off glc slc", "v,v"(ptr %p, i1 %b)
+  ret void
+}
+
+; ERR: error: couldn't allocate input reg for constraint 'a'
+define void @i1_used_as_agpr_operand(ptr %p, i1 %b) {
+  tail call void asm sideeffect "global_store_byte $0, $1, off glc slc", "v,a"(ptr %p, i1 %b)
+  ret void
+}
+
+; ERR: error: couldn't allocate input reg for constraint 's'
+define void @i1_used_as_sgpr_operand_s(ptr %p, i1 %b) {
+  tail call void asm sideeffect "global_store_byte $0, $1, off glc slc", "v,s"(ptr %p, i1 %b)
+  ret void
+}
+
+; ERR: error: couldn't allocate input reg for constraint 'r'
+define void @i1_used_as_sgpr_operand_r(ptr %p, i1 %b) {
+  tail call void asm sideeffect "global_store_byte $0, $1, off glc slc", "v,r"(ptr %p, i1 %b)
+  ret void
+}