[llvm] [AMDGPU] Allocate i1 argument to SGPRs (PR #72461)

[Jun Wang via llvm-commits]

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@@ -0,0 +1,569 @@
+; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+; RUN: llc -global-isel -stop-after=irtranslator -mtriple=amdgcn -mcpu=gfx900 -verify-machineinstrs -o - %s | FileCheck -check-prefixes=GFX9 -enable-var-scope %s
+; RUN: llc -global-isel -stop-after=irtranslator -mtriple=amdgcn -mcpu=gfx1100 -verify-machineinstrs -o - %s | FileCheck -check-prefixes=GFX11 -enable-var-scope %s
+
+define void @void_func_i1(i1 %arg0) {
+; GFX9-LABEL: name: void_func_i1
+; GFX9: bb.1 (%ir-block.0):
+; GFX9-NEXT:   liveins: $sgpr4_sgpr5
+; GFX9-NEXT: {{  $}}
+; GFX9-NEXT:    [[COPY:%[0-9]+]]:_(s64) = COPY $sgpr4_sgpr5
+; GFX9-NEXT:    [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[COPY]](s64)
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jwanggit86 wrote:

Without the TRUNC, the test file `GlobalISel/localizer.ll` fails with the error:
```
LLVM ERROR: unable to map instruction: %0:_(s1) = COPY $sgpr4_sgpr5 (in function: localize_internal_globals)
```
What's an "s1 typed copy"?

https://github.com/llvm/llvm-project/pull/72461