llvm-project/llvm/test/CodeGen/AMDGPU/coalescer-subranges-another-copymi-not-live.mir

# RUN: llc -mtriple=amdgcn--amdpal -mcpu=gfx803 -run-pass=simple-register-coalescing -o - %s | FileCheck -check-prefix=GCN %s

# With one version of the D48102 fix, this test failed with
# Assertion failed: (ValNo && "CopyMI input register not live"), function reMaterializeTrivialDef, file ../lib/CodeGen/RegisterCoalescer.cpp, line 1107.

# GCN: {{^body}}

--- |
  target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5"
  target triple = "amdgcn--amdpal"

  define amdgpu_cs void @_amdgpu_cs_main(<3 x i32>) #0 {
    ret void
  }

  attributes #0 = { nounwind "target-cpu"="gfx803" }
...

---
name:            _amdgpu_cs_main
tracksRegLiveness: true
body:             |
  bb.0:
    successors: %bb.1(0x40000000), %bb.2(0x40000000)
    %0:vgpr_32 = V_MUL_F32_e32 0, undef %1:vgpr_32, implicit $exec
    %2:vgpr_32 = V_CVT_U32_F32_e32 killed %0, implicit $exec
    %3:vgpr_32 = V_CVT_F32_I32_e32 killed %2, implicit $exec
    %4:vgpr_32 = V_CVT_U32_F32_e32 killed %3, implicit $exec
    %5:vgpr_32 = V_LSHRREV_B32_e32 4, killed %4, implicit $exec
    S_CBRANCH_SCC0 %bb.2, implicit undef $scc

  bb.1:
    successors: %bb.5(0x80000000)
    undef %6.sub1:vreg_128 = COPY killed %5
    %7:vreg_128 = COPY killed %6
    S_BRANCH %bb.5

  bb.2:
    successors: %bb.3(0x40000000), %bb.4(0x40000000)
    S_CBRANCH_SCC0 %bb.4, implicit undef $scc

  bb.3:
    successors: %bb.5(0x80000000)
    %8:sreg_32_xm0 = S_MOV_B32 0
    undef %9.sub0:sreg_128 = COPY %8
    %9.sub1:sreg_128 = COPY %8
    %9.sub2:sreg_128 = COPY %8
    %9.sub3:sreg_128 = COPY killed %8
    %10:vreg_128 = COPY killed %9
    %7:vreg_128 = COPY killed %10
    S_BRANCH %bb.5

  bb.4:
    successors: %bb.5(0x80000000)
    %11:sreg_32_xm0 = S_MOV_B32 0
    undef %12.sub0:sreg_128 = COPY %11
    %12.sub1:sreg_128 = COPY %11
    %12.sub2:sreg_128 = COPY %11
    %12.sub3:sreg_128 = COPY killed %11
    %13:sreg_128 = COPY killed %12
    %14:vreg_128 = COPY killed %13
    %7:vreg_128 = COPY killed %14

  bb.5:
    successors: %bb.8(0x40000000), %bb.6(0x40000000)
    %15:vreg_128 = COPY killed %7
    S_CBRANCH_SCC0 %bb.8, implicit undef $scc

  bb.6:
    successors: %bb.7(0x80000000)
    %16:vreg_128 = COPY killed %15

  bb.7:
    successors: %bb.14(0x80000000)
    %17:vreg_128 = COPY killed %16
    S_BRANCH %bb.14

  bb.8:
    successors: %bb.9(0x40000000), %bb.11(0x40000000)
    %18:vgpr_32 = V_MUL_LO_I32 %15.sub1, target-flags(amdgpu-gotprel32-lo) 7, implicit $exec
    S_CBRANCH_SCC1 %bb.11, implicit undef $scc
    S_BRANCH %bb.9

  bb.9:
    successors: %bb.10(0x80000000)
    %19:vreg_128 = BUFFER_LOAD_FORMAT_XYZW_IDXEN killed %18, undef %20:sreg_128, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 16 from constant-pool, align 1, addrspace 4)
    %21:sreg_64 = V_CMP_NE_U32_e64 target-flags(amdgpu-gotprel) 0, killed %19.sub0, implicit $exec
    %22:sreg_64 = COPY $exec, implicit-def $exec
    %23:sreg_64 = S_AND_B64 %22, %21, implicit-def dead $scc
    $exec = S_MOV_B64_term killed %23

  bb.10:
    successors: %bb.12(0x80000000)
    $exec = S_OR_B64 $exec, killed %22, implicit-def $scc
    S_BRANCH %bb.12

  bb.11:
    successors: %bb.13(0x80000000)
    %24:vreg_128 = COPY killed %15
    %24.sub0:vreg_128 = COPY undef %18
    S_BRANCH %bb.13

  bb.12:
    successors: %bb.11(0x80000000)
    S_BRANCH %bb.11

  bb.13:
    successors: %bb.7(0x80000000)
    %16:vreg_128 = COPY killed %24
    S_BRANCH %bb.7

  bb.14:
    successors: %bb.15(0x80000000)
    S_CBRANCH_SCC1 %bb.15, implicit undef $scc
    S_BRANCH %bb.15

  bb.15:
    undef %25.sub2:vreg_128 = COPY killed %17.sub2
    %26:sreg_32_xm0 = S_MOV_B32 0
    undef %27.sub0:sreg_256 = COPY %26
    %27.sub1:sreg_256 = COPY %26
    %27.sub2:sreg_256 = COPY %26
    %27.sub3:sreg_256 = COPY %26
    %27.sub4:sreg_256 = COPY %26
    %27.sub5:sreg_256 = COPY %26
    %27.sub6:sreg_256 = COPY %26
    %27.sub7:sreg_256 = COPY killed %26
    %28:vgpr_32 = IMAGE_LOAD_V1_V4 killed %25, killed %27, 2, -1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 16 from constant-pool, addrspace 4)
    %29:vgpr_32 = V_ADD_F32_e32 0, killed %28, implicit $exec
    $m0 = S_MOV_B32 -1
    DS_WRITE_B32 undef %30:vgpr_32, killed %29, 0, 0, implicit $m0, implicit $exec :: (store 4 into `i32 addrspace(3)* undef`, addrspace 3)
    S_ENDPGM 0
...