[llvm] GlobalISel: Fix defined register of invariant.start (PR #125664)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,24 @@
+; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=amdgcn -mcpu=gfx90a -O0 -global-isel=true --stop-after=irtranslator -o - %s | FileCheck %s
+target datalayout = "A5"
+
+declare ptr @llvm.invariant.start.p5(i64 immarg, ptr addrspace(5) nocapture)
+declare void @llvm.invariant.end.p5(ptr, i64 immarg, ptr addrspace(5) nocapture)
+
+define amdgpu_kernel void @use_invariant_promotable_lds(ptr addrspace(5) %arg, i32 %i) {
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arsenm wrote:

```suggestion
define void @use_invariant_promotable_lds(ptr addrspace(5) %arg, i32 %i) {
```
stack arguments to kernels should be a verifier error 

https://github.com/llvm/llvm-project/pull/125664