[llvm] [SeparateConstOffsetFromGEP] Don't set unsound inbounds flag (PR #130616)

[Fabian Ritter via llvm-commits]

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@@ -682,10 +682,11 @@ define amdgpu_kernel void @store_load_vindex_kernel() {
 ; GFX9-NEXT:    s_addc_u32 flat_scratch_hi, s9, 0
 ; GFX9-NEXT:    v_mov_b32_e32 v1, v0
 ; GFX9-NEXT:    v_mov_b32_e32 v2, 15
+; GFX9-NEXT:    v_sub_u32_e32 v0, 0, v0
 ; GFX9-NEXT:    scratch_store_dword v1, v2, off
 ; GFX9-NEXT:    s_waitcnt vmcnt(0)
-; GFX9-NEXT:    v_sub_u32_e32 v0, 0, v0
-; GFX9-NEXT:    scratch_load_dword v0, v0, off offset:124 glc
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ritter-x2a wrote:

Adjusted this test and the global ISel version by manually applying the unsound transformation and increasing alloca sizes so that the tests are not statically guaranteed to show UB.

https://github.com/llvm/llvm-project/pull/130616