# 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: (Id != S.end() && T != S.end() && T->valno == Id->valno), function pruneSubRegValues, file ../lib/CodeGen/RegisterCoalescer.cpp, line 2875.

# 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"

  ; Function Attrs: nounwind
  define amdgpu_ps void @_amdgpu_ps_main(float %arg) #0 {
    ret void
  }

  attributes #0 = { nounwind "InitialPSInputAddr"="3842" "target-cpu"="gfx803" }
...

---
name:            _amdgpu_ps_main
tracksRegLiveness: true
body:             |
  bb.0:
    successors: %bb.2(0x40000000), %bb.1(0x40000000)
    %0:sreg_64 = COPY $exec
    %1:sgpr_32 = S_MOV_B32 0
    undef %2.sub0:sreg_128 = COPY %1
    %2.sub1:sreg_128 = COPY %1
    %2.sub2:sreg_128 = COPY %1
    %2.sub3:sreg_128 = COPY %1
    $exec = S_WQM_B64 $exec, implicit-def dead $scc
    S_CBRANCH_SCC0 %bb.2, implicit undef $scc

  bb.1:
    successors: %bb.3(0x80000000)
    %3:sreg_128 = COPY killed %2
    %4:vreg_128 = COPY killed %3
    %5:vreg_128 = COPY killed %4
    S_BRANCH %bb.3

  bb.2:
    successors: %bb.4(0x80000000)
    %6:vgpr_32 = V_MUL_F32_e32 1031798784, undef %7:vgpr_32, implicit $exec
    %8:vgpr_32 = V_FLOOR_F32_e32 killed %6, implicit $exec
    %9:vgpr_32 = V_ADD_F32_e32 0, killed %8, implicit $exec
    %10:vgpr_32 = V_CVT_U32_F32_e32 killed %9, implicit $exec
    %11:vgpr_32 = V_LSHLREV_B32_e32 1, killed %10, implicit $exec
    %12:sreg_64 = S_MOV_B64 0
    %13:sreg_128 = COPY killed %2
    %14:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
    %15:vreg_128 = COPY killed %13
    %16:sreg_64 = COPY killed %12
    %17:vreg_128 = IMPLICIT_DEF
    %18:vgpr_32 = COPY killed %14
    %19:vreg_128 = COPY killed %15
    S_BRANCH %bb.4

  bb.3:
    successors: %bb.17(0x80000000)
    %20:vreg_128 = COPY killed %5
    S_BRANCH %bb.17

  bb.4:
    successors: %bb.8(0x40000000), %bb.9(0x40000000)
    %21:vreg_128 = COPY killed %19
    %22:vgpr_32 = COPY killed %18
    %23:vreg_128 = COPY killed %17
    %24:sreg_64 = COPY killed %16
    %25:vgpr_32 = V_OR_B32_e32 %22, %11, implicit $exec
    %26:vreg_128 = BUFFER_LOAD_FORMAT_XYZW_IDXEN killed %25, undef %27:sreg_128, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 16 from constant-pool, align 1, addrspace 4)
    %28:vgpr_32 = V_LSHRREV_B32_e32 30, killed %26.sub0, implicit $exec
    %29:vreg_128 = COPY killed %21
    %29.sub0:vreg_128 = COPY %1
    %30:sreg_64 = V_CMP_NE_U32_e64 0, %28, implicit $exec
    %31:sreg_64_xexec = V_CMP_EQ_U32_e64 0, %28, implicit $exec
    dead %32:vgpr_32 = V_CNDMASK_B32_e64 0, -1, killed %31, implicit $exec
    %33:vreg_128 = COPY %29
    %33.sub1:vreg_128 = COPY undef %32
    %34:vgpr_32 = V_MOV_B32_e32 -1, implicit $exec
    %35:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
    %36:sreg_64 = COPY %24
    %37:vreg_128 = COPY %23
    %38:vreg_128 = IMPLICIT_DEF
    %39:vreg_128 = IMPLICIT_DEF
    %40:vgpr_32 = IMPLICIT_DEF
    %41:vreg_1 = COPY killed %35
    %42:vreg_1 = COPY killed %34
    %43:sreg_64 = COPY $exec, implicit-def $exec
    %44:sreg_64 = S_AND_B64 %43, %30, implicit-def dead $scc
    %45:sreg_64 = S_XOR_B64 %44, %43, implicit-def dead $scc
    $exec = S_MOV_B64_term killed %44
    SI_MASK_BRANCH %bb.9, implicit $exec
    S_BRANCH %bb.8

  bb.5:
    successors: %bb.9(0x80000000)
    $exec = S_OR_B64 $exec, %46, implicit-def $scc
    %47:vreg_1 = COPY killed %48
    %49:vgpr_32 = COPY killed %50
    %51:vreg_128 = COPY killed %52
    %53:vreg_128 = COPY killed %54
    %55:sreg_64 = COPY killed %56
    %57:sreg_64 = S_AND_B64 $exec, %46, implicit-def $scc
    %57:sreg_64 = S_OR_B64 %57, killed %55, implicit-def $scc
    %58:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
    %36:sreg_64 = COPY killed %57
    %37:vreg_128 = COPY killed %53
    %38:vreg_128 = COPY killed %59
    %39:vreg_128 = COPY killed %51
    %40:vgpr_32 = COPY killed %49
    %41:vreg_1 = COPY killed %47
    %42:vreg_1 = COPY killed %58
    S_BRANCH %bb.9

  bb.6:
    successors: %bb.7(0x40000000), %bb.13(0x40000000)
    $exec = S_OR_B64 $exec, killed %60, implicit-def $scc
    %61:sreg_64 = V_CMP_NE_U32_e64 0, killed %62, implicit $exec
    %63:vreg_128 = COPY killed %64
    %65:vreg_1 = COPY killed %66
    %67:sreg_64 = COPY $exec, implicit-def $exec
    %68:sreg_64 = S_AND_B64 %67, %61, implicit-def dead $scc
    $exec = S_MOV_B64_term killed %68
    SI_MASK_BRANCH %bb.13, implicit $exec
    S_BRANCH %bb.7

  bb.7:
    successors: %bb.13(0x80000000)
    %69:vgpr_32 = V_MOV_B32_e32 -1, implicit $exec
    %70:vreg_128 = COPY killed %33
    %63:vreg_128 = COPY killed %70
    %65:vreg_1 = COPY killed %69
    S_BRANCH %bb.13

  bb.8:
    successors: %bb.10(0x80000000)
    %71:sreg_64 = S_MOV_B64 0
    %72:vreg_128 = COPY %33
    %73:sreg_64 = COPY killed %71
    %74:vreg_128 = COPY killed %72
    %75:vreg_128 = COPY killed %29
    S_BRANCH %bb.10

  bb.9:
    successors: %bb.6(0x04000000), %bb.4(0x7c000000)
    $exec = S_OR_B64 $exec, %45, implicit-def $scc
    %62:vreg_1 = COPY killed %42
    %66:vreg_1 = COPY killed %41
    %76:vgpr_32 = COPY killed %40
    %77:vreg_128 = COPY killed %39
    %64:vreg_128 = COPY killed %38
    %78:vreg_128 = COPY killed %37
    %79:sreg_64 = COPY killed %36
    %60:sreg_64 = S_AND_B64 $exec, %45, implicit-def $scc
    %60:sreg_64 = S_OR_B64 %60, killed %79, implicit-def $scc
    %80:vreg_128 = COPY %78
    %16:sreg_64 = COPY %60
    %17:vreg_128 = COPY killed %80
    %18:vgpr_32 = COPY killed %76
    %19:vreg_128 = COPY killed %77
    $exec = S_ANDN2_B64_term $exec, %60
    S_CBRANCH_EXECNZ %bb.4, implicit $exec
    S_BRANCH %bb.6

  bb.10:
    successors: %bb.11(0x80000000)
    %81:vreg_128 = COPY killed %75
    %82:vreg_128 = COPY killed %74
    %83:sreg_64 = COPY killed %73

  bb.11:
    successors: %bb.12(0x04000000), %bb.10(0x7c000000)
    undef %59.sub0:vreg_128 = COPY %81.sub0
    %59.sub2:vreg_128 = COPY %82.sub2
    %59.sub3:vreg_128 = COPY killed %82.sub3
    %84:sreg_64 = V_CMP_GE_U32_e64 killed %81.sub0, %28, implicit $exec
    %85:sreg_64 = S_OR_B64 killed %84, killed %83, implicit-def $scc
    %86:vreg_128 = COPY %59
    %73:sreg_64 = COPY %85
    %74:vreg_128 = COPY %59
    %75:vreg_128 = COPY killed %86
    $exec = S_ANDN2_B64_term $exec, %85
    S_CBRANCH_EXECNZ %bb.10, implicit $exec
    S_BRANCH %bb.12

  bb.12:
    successors: %bb.15(0x40000000), %bb.5(0x40000000)
    $exec = S_OR_B64 $exec, killed %85, implicit-def $scc
    %87:sreg_64 = V_CMP_LT_U32_e64 11, killed %28, implicit $exec
    %88:vgpr_32 = V_MOV_B32_e32 -1, implicit $exec
    %56:sreg_64 = COPY %24
    %54:vreg_128 = COPY killed %23
    %52:vreg_128 = IMPLICIT_DEF
    %50:vgpr_32 = IMPLICIT_DEF
    %48:vreg_1 = COPY killed %88
    %89:sreg_64 = COPY $exec, implicit-def $exec
    %90:sreg_64 = S_AND_B64 %89, %87, implicit-def dead $scc
    %46:sreg_64 = S_XOR_B64 %90, %89, implicit-def dead $scc
    $exec = S_MOV_B64_term killed %90
    SI_MASK_BRANCH %bb.5, implicit $exec
    S_BRANCH %bb.15

  bb.13:
    successors: %bb.14(0x40000000), %bb.16(0x40000000)
    $exec = S_OR_B64 $exec, killed %67, implicit-def $scc
    %91:vreg_1 = COPY killed %65
    %92:vreg_128 = COPY killed %63
    %93:sreg_64 = V_CMP_NE_U32_e64 0, killed %91, implicit $exec
    %94:vreg_128 = COPY killed %78
    %95:sreg_64 = COPY $exec, implicit-def $exec
    %96:sreg_64 = S_AND_B64 %95, %93, implicit-def dead $scc
    $exec = S_MOV_B64_term killed %96
    SI_MASK_BRANCH %bb.16, implicit $exec
    S_BRANCH %bb.14

  bb.14:
    successors: %bb.16(0x80000000)
    %97:vreg_128 = COPY killed %92
    %94:vreg_128 = COPY killed %97
    S_BRANCH %bb.16

  bb.15:
    successors: %bb.5(0x80000000)
    %98:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
    %99:sreg_64 = V_CMP_NE_U32_e64 0, killed %22, implicit $exec
    %100:sreg_64 = S_OR_B64 killed %99, killed %24, implicit-def $scc
    %101:vreg_128 = COPY %59
    %102:vgpr_32 = V_MOV_B32_e32 1, implicit $exec
    %56:sreg_64 = COPY killed %100
    %54:vreg_128 = COPY killed %101
    %52:vreg_128 = COPY %59
    %50:vgpr_32 = COPY killed %102
    %48:vreg_1 = COPY killed %98
    S_BRANCH %bb.5

  bb.16:
    successors: %bb.3(0x80000000)
    $exec = S_OR_B64 $exec, killed %95, implicit-def $scc
    %103:vreg_128 = COPY killed %94
    %104:vreg_128 = COPY killed %103
    %5:vreg_128 = COPY killed %104
    S_BRANCH %bb.3

  bb.17:
    %105:vgpr_32 = V_ADD_F32_e32 target-flags(amdgpu-rel32-lo) 0, %20.sub3, implicit $exec
    %106:vgpr_32 = V_ADD_F32_e32 target-flags(amdgpu-gotprel32-hi) 0, killed %20.sub2, implicit $exec
    undef %107.sub0:vreg_64 = COPY killed %106
    %107.sub1:vreg_64 = COPY killed %105
    $exec = S_AND_B64 $exec, killed %0, implicit-def dead $scc
    %108:sreg_32_xm0 = S_MOV_B32 0
    undef %109.sub0:sreg_256 = COPY %108
    %109.sub1:sreg_256 = COPY %108
    %109.sub2:sreg_256 = COPY %108
    %109.sub3:sreg_256 = COPY %108
    %109.sub4:sreg_256 = COPY %108
    %109.sub5:sreg_256 = COPY %108
    %109.sub6:sreg_256 = COPY %108
    %109.sub7:sreg_256 = COPY killed %108
    %110:vgpr_32 = IMAGE_SAMPLE_V1_V2 killed %107, killed %109, undef %111:sreg_128, 8, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (dereferenceable load 16 from constant-pool, addrspace 4)
    %112:vgpr_32 = V_MUL_F32_e32 0, killed %110, implicit $exec
    %113:vgpr_32 = V_MUL_F32_e32 0, killed %112, implicit $exec
    %114:vgpr_32 = V_MAD_F32 0, killed %113, 0, 0, 0, 0, 0, 0, implicit $exec
    %115:vgpr_32 = V_MAX_F32_e32 0, killed %114, implicit $exec
    %116:vgpr_32 = V_CVT_PKRTZ_F16_F32_e64 0, killed %115, 0, 1065353216, 0, 0, implicit $exec
    EXP 0, undef %117:vgpr_32, killed %116, undef %118:vgpr_32, undef %119:vgpr_32, -1, -1, 15, implicit $exec
    S_ENDPGM
...