[llvm-branch-commits] [llvm] AMDGPU: Replace undef references with poison in some MIR tests (PR #131254)

via llvm-branch-commits llvm-branch-commits at lists.llvm.org
Thu Mar 13 19:59:46 PDT 2025 

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-llvm-globalisel

@llvm/pr-subscribers-backend-amdgpu

Author: Matt Arsenault (arsenm)

<details>
<summary>Changes</summary>



---

Patch is 102.20 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/131254.diff


11 Files Affected:

- (modified) llvm/test/CodeGen/AMDGPU/invert-br-undef-vcc.mir (+1-1) 
- (modified) llvm/test/CodeGen/AMDGPU/lds-dma-waitcnt.mir (+9-9) 
- (modified) llvm/test/CodeGen/AMDGPU/memory-legalizer-invalid-addrspace.mir (+1-1) 
- (modified) llvm/test/CodeGen/AMDGPU/memory-legalizer-local.mir (+20-20) 
- (modified) llvm/test/CodeGen/AMDGPU/memory-legalizer-region.mir (+20-20) 
- (modified) llvm/test/CodeGen/AMDGPU/merge-flat-load-store.mir (+105-105) 
- (modified) llvm/test/CodeGen/AMDGPU/merge-flat-with-global-load-store.mir (+31-31) 
- (modified) llvm/test/CodeGen/AMDGPU/opt-sgpr-to-vgpr-copy.mir (+3-3) 
- (modified) llvm/test/CodeGen/AMDGPU/optimize-if-exec-masking.mir (+11-11) 
- (modified) llvm/test/CodeGen/AMDGPU/scalar-store-cache-flush.mir (+2-2) 
- (modified) llvm/test/CodeGen/AMDGPU/sched-crash-dbg-value.mir (+8-8) 


``````````diff
diff --git a/llvm/test/CodeGen/AMDGPU/invert-br-undef-vcc.mir b/llvm/test/CodeGen/AMDGPU/invert-br-undef-vcc.mir
index c9c99a9953fcd..10c46e39c3664 100644
--- a/llvm/test/CodeGen/AMDGPU/invert-br-undef-vcc.mir
+++ b/llvm/test/CodeGen/AMDGPU/invert-br-undef-vcc.mir
@@ -3,7 +3,7 @@
 
   define amdgpu_kernel void @invert_br_undef_vcc(float %cond, ptr addrspace(1) %out) #0 {
   entry:
-    br i1 undef, label %if, label %else, !structurizecfg.uniform !0, !amdgpu.uniform !0
+    br i1 poison, label %if, label %else, !structurizecfg.uniform !0, !amdgpu.uniform !0
 
   else:                                             ; preds = %entry
     store volatile i32 100, ptr addrspace(1) poison
diff --git a/llvm/test/CodeGen/AMDGPU/lds-dma-waitcnt.mir b/llvm/test/CodeGen/AMDGPU/lds-dma-waitcnt.mir
index 195597c480319..cab45900b996e 100644
--- a/llvm/test/CodeGen/AMDGPU/lds-dma-waitcnt.mir
+++ b/llvm/test/CodeGen/AMDGPU/lds-dma-waitcnt.mir
@@ -10,7 +10,7 @@ name: buffer_load_dword_lds_ds_read
 body:             |
   bb.0:
     $m0 = S_MOV_B32 0
-    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4), (store (s32) into `ptr addrspace(3) undef` + 4)
+    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4), (store (s32) into `ptr addrspace(3)` + 4)
     $vgpr0 = DS_READ_B32_gfx9 $vgpr1, 0, 0, implicit $m0, implicit $exec :: (load (s32) from `ptr addrspace(3) poison`)
     S_ENDPGM 0
 
@@ -27,7 +27,7 @@ name: buffer_load_dword_lds_vmcnt_1
 body:             |
   bb.0:
     $m0 = S_MOV_B32 0
-    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison`), (store (s32) into `ptr addrspace(3) undef`)
+    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison`), (store (s32) into `ptr addrspace(3)`)
     $vgpr10 = BUFFER_LOAD_DWORD_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison`)
     $vgpr0 = DS_READ_B32_gfx9 $vgpr1, 0, 0, implicit $m0, implicit $exec :: (load (s32) from `ptr addrspace(3) poison`)
     S_ENDPGM 0
@@ -44,8 +44,8 @@ name: buffer_load_dword_lds_flat_read
 body:             |
   bb.0:
     $m0 = S_MOV_B32 0
-    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison`), (store (s32) into `ptr addrspace(3) undef`)
-    $vgpr0 = FLAT_LOAD_DWORD $vgpr0_vgpr1, 0, 0, implicit $exec, implicit $flat_scr :: (load (s32) from `ptr undef`)
+    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison`), (store (s32) into `ptr addrspace(3)`)
+    $vgpr0 = FLAT_LOAD_DWORD $vgpr0_vgpr1, 0, 0, implicit $exec, implicit $flat_scr :: (load (s32) from `ptr poison`)
 
     S_ENDPGM 0
 
@@ -61,7 +61,7 @@ name: global_load_lds_dword_ds_read
 body:             |
   bb.0:
     $m0 = S_MOV_B32 0
-    GLOBAL_LOAD_LDS_DWORD $vgpr0_vgpr1, 4, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4), (store (s32) into `ptr addrspace(3) undef` + 4)
+    GLOBAL_LOAD_LDS_DWORD $vgpr0_vgpr1, 4, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4), (store (s32) into `ptr addrspace(3)` + 4)
     $vgpr0 = DS_READ_B32_gfx9 $vgpr1, 0, 0, implicit $m0, implicit $exec :: (load (s32) from `ptr addrspace(3) poison`)
     S_ENDPGM 0
 
@@ -91,7 +91,7 @@ name: buffer_store_lds_dword_ds_read
 body:             |
   bb.0:
     $m0 = S_MOV_B32 0
-    BUFFER_STORE_LDS_DWORD $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(3) poison` + 4), (store (s32) into `ptr addrspace(1) undef` + 4)
+    BUFFER_STORE_LDS_DWORD $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(3) poison` + 4), (store (s32) into `ptr addrspace(1)` + 4)
     $vgpr0 = DS_READ_B32_gfx9 $vgpr1, 0, 0, implicit $m0, implicit $exec :: (load (s32) from `ptr addrspace(3) poison`)
     S_ENDPGM 0
 
@@ -110,9 +110,9 @@ name: series_of_buffer_load_dword_lds_ds_read
 body:             |
   bb.0:
     $m0 = S_MOV_B32 0
-    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 0, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison`), (store (s32) into `ptr addrspace(3) undef`)
-    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4), (store (s32) into `ptr addrspace(3) undef` + 4)
-    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 8, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 8), (store (s32) into `ptr addrspace(3) undef` + 8)
+    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 0, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison`), (store (s32) into `ptr addrspace(3)`)
+    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 4, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 4), (store (s32) into `ptr addrspace(3)` + 4)
+    BUFFER_LOAD_DWORD_LDS_IDXEN $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr4, 8, 0, 0, implicit $exec, implicit $m0 :: (load (s32) from `ptr addrspace(1) poison` + 8), (store (s32) into `ptr addrspace(3)` + 8)
     $vgpr0 = DS_READ_B32_gfx9 $vgpr1, 0, 0, implicit $m0, implicit $exec :: (load (s32) from `ptr addrspace(3) poison`)
     S_ENDPGM 0
 
diff --git a/llvm/test/CodeGen/AMDGPU/memory-legalizer-invalid-addrspace.mir b/llvm/test/CodeGen/AMDGPU/memory-legalizer-invalid-addrspace.mir
index c24a4ee20664d..7a914c2322229 100644
--- a/llvm/test/CodeGen/AMDGPU/memory-legalizer-invalid-addrspace.mir
+++ b/llvm/test/CodeGen/AMDGPU/memory-legalizer-invalid-addrspace.mir
@@ -14,7 +14,7 @@ body:             |
     renamable $vgpr2 = FLAT_LOAD_DWORD killed renamable $vgpr0_vgpr1, 0, 0, implicit $exec, implicit $flat_scr :: (volatile load syncscope("one-as") seq_cst (s32) from `ptr addrspace(42) undef`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
diff --git a/llvm/test/CodeGen/AMDGPU/memory-legalizer-local.mir b/llvm/test/CodeGen/AMDGPU/memory-legalizer-local.mir
index 0e22ea40354bb..adaee7ebaddd3 100644
--- a/llvm/test/CodeGen/AMDGPU/memory-legalizer-local.mir
+++ b/llvm/test/CodeGen/AMDGPU/memory-legalizer-local.mir
@@ -20,7 +20,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("singlethread-one-as") unordered (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -44,7 +44,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("singlethread-one-as") monotonic (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -68,7 +68,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("singlethread-one-as") acquire (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -92,7 +92,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("singlethread-one-as") seq_cst (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -116,7 +116,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("wavefront-one-as") unordered (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -140,7 +140,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("wavefront-one-as") monotonic (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -164,7 +164,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("wavefront-one-as") acquire (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -188,7 +188,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("wavefront-one-as") seq_cst (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -212,7 +212,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("workgroup-one-as") unordered (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -236,7 +236,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("workgroup-one-as") monotonic (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -260,7 +260,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("workgroup-one-as") acquire (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -284,7 +284,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("workgroup-one-as") seq_cst (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -308,7 +308,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("agent-one-as") unordered (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -332,7 +332,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("agent-one-as") monotonic (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -356,7 +356,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("agent-one-as") acquire (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -380,7 +380,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("agent-one-as") seq_cst (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -404,7 +404,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("one-as") unordered (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $sgpr0_sgpr1
     $vgpr1 = V_MOV_B32_e32 killed $sgpr1, implicit $exec, implicit $sgpr0_sgpr1, implicit $exec
-    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr undef`)
+    FLAT_STORE_DWORD killed renamable $vgpr0_vgpr1, killed renamable $vgpr2, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into `ptr poison`)
     S_ENDPGM 0
 
 ...
@@ -428,7 +428,7 @@ body:             |
     renamable $vgpr2 = DS_READ_B32 killed renamable $vgpr0, 0, 0, implicit $m0, implicit $exec :: (volatile load syncscope("one-as") monotonic (s32) from `ptr addrspace(3) poison`)
     $vgpr0 = V_MOV_B32_e32 $sgpr0, implicit $exec, implicit-def $vgpr0_vgpr1, implicit $s...
[truncated]

``````````

</details>


https://github.com/llvm/llvm-project/pull/131254

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