File: dag-divergence.ll

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llvm-toolchain-19 1%3A19.1.7-3~deb12u1
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=fiji -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s

; GCN-LABEL: {{^}}private_load_maybe_divergent:
; GCN: buffer_load_dword
; GCN-NOT: s_load_dword s
; GCN: flat_load_dword
; GCN-NOT: s_load_dword s
define amdgpu_kernel void @private_load_maybe_divergent(ptr addrspace(4) %k, ptr %flat) {
  %load = load volatile i32, ptr addrspace(5) undef, align 4
  %gep = getelementptr inbounds i32, ptr addrspace(4) %k, i32 %load
  %maybe.not.uniform.load = load i32, ptr addrspace(4) %gep, align 4
  store i32 %maybe.not.uniform.load, ptr addrspace(1) undef
  ret void
}

; GCN-LABEL: {{^}}flat_load_maybe_divergent:
; GCN: s_load_dwordx4
; GCN-NOT: s_load
; GCN: flat_load_dword
; GCN-NOT: s_load
; GCN: flat_load_dword
; GCN-NOT: s_load
; GCN: flat_store_dword
define amdgpu_kernel void @flat_load_maybe_divergent(ptr addrspace(4) %k, ptr %flat) {
  %load = load i32, ptr %flat, align 4
  %gep = getelementptr inbounds i32, ptr addrspace(4) %k, i32 %load
  %maybe.not.uniform.load = load i32, ptr addrspace(4) %gep, align 4
  store i32 %maybe.not.uniform.load, ptr addrspace(1) undef
  ret void
}