File: insert-subvector-unused-scratch.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; RUN: llc -mtriple amdgcn-amd-- -mcpu=bonaire -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s

; Before the fix that this test was committed with, this code would leave
; an unused stack slot, causing ScratchSize to be non-zero.

; GCN-LABEL: store_v3i32:
; GCN:        ds_read_b96
; GCN:        ds_write_b96
; GCN: ScratchSize: 0
define amdgpu_kernel void @store_v3i32(ptr addrspace(3) %out, <3 x i32> %a) nounwind {
  %val = load <3 x i32>, ptr addrspace(3) %out
  %val.1 = add <3 x i32> %a, %val
  store <3 x i32> %val.1, ptr addrspace(3) %out, align 16
  ret void
}

; GCN-LABEL: store_v5i32:
; GCN:        ds_read_b128
; GCN:        ds_read_b32
; GCN:        ds_write_b32
; GCN:        ds_write_b128
; GCN: ScratchSize: 0
define amdgpu_kernel void @store_v5i32(ptr addrspace(3) %out, <5 x i32> %a) nounwind {
  %val = load <5 x i32>, ptr addrspace(3) %out
  %val.1 = add <5 x i32> %a, %val
  store <5 x i32> %val.1, ptr addrspace(3) %out, align 16
  ret void
}