File: sgpr-copy-duplicate-operand.ll

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llvm-toolchain-19 1%3A19.1.7-3~deb12u1
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; RUN:  llc -amdgpu-scalarize-global-loads=false  -mtriple=amdgcn -verify-machineinstrs< %s | FileCheck -check-prefix=SI %s
; RUN:  llc -amdgpu-scalarize-global-loads=false  -mtriple=amdgcn -mcpu=tonga -verify-machineinstrs< %s | FileCheck -check-prefix=SI %s

; Copy VGPR -> SGPR used twice as an instruction operand, which is then
; used in an REG_SEQUENCE that also needs to be handled.

; SI-LABEL: {{^}}test_dup_operands:
; SI: v_add_{{[iu]}}32_e32
define amdgpu_kernel void @test_dup_operands(ptr addrspace(1) noalias %out, ptr addrspace(1) noalias %in) {
  %a = load <2 x i32>, ptr addrspace(1) %in
  %lo = extractelement <2 x i32> %a, i32 0
  %hi = extractelement <2 x i32> %a, i32 1
  %add = add i32 %lo, %lo
  %vec0 = insertelement <2 x i32> undef, i32 %add, i32 0
  %vec1 = insertelement <2 x i32> %vec0, i32 %hi, i32 1
  store <2 x i32> %vec1, ptr addrspace(1) %out, align 8
  ret void
}