[llvm] [AMDGPU] AMDGPUPromoteAlloca: increase default max-regs to 32 (PR #155076)

[Matt Arsenault via llvm-commits]

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@@ -169,12 +170,12 @@ define amdgpu_cs void @realign_stack(<32 x i32> %x) #0 {
 ; CHECK-NEXT:    scratch_store_b128 off, v[4:7], s33 offset:16
 ; CHECK-NEXT:    scratch_store_b128 off, v[0:3], s33
 ; CHECK-NEXT:    v_mov_b32_e32 v0, 0x47
-; CHECK-NEXT:    s_cmovk_i32 s32, 0x300
+; CHECK-NEXT:    s_cmovk_i32 s32, 0x380
 ; CHECK-NEXT:    s_swappc_b64 s[30:31], s[0:1]
 ; CHECK-NEXT:    s_alloc_vgpr 0
 ; CHECK-NEXT:    s_endpgm
-  %v = alloca <32 x i32>, align 128, addrspace(5)
-  store <32 x i32> %x, ptr addrspace(5) %v
+  %v = alloca <33 x i32>, align 128, addrspace(5)
+  store <33 x i32> %x, ptr addrspace(5) %v
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arsenm wrote:

volatile? 

https://github.com/llvm/llvm-project/pull/155076