llvm/test/CodeGen/AArch64/pr51516.mir

# RUN: llc -mtriple=aarch64-unknown-fuchsia -run-pass=greedy -verify-machineinstrs -o - %s | FileCheck %s

# Check that we spill %31 and do not rematerialize it since the use operand
# of ADDXri is killed by the STRXui in this block.

# CHECK-LABEL: name: test
# CHECK: bb.17:
# CHECK:   STRXui
# CHECK:   LDRXui
# CHECK: bb.18:

---
name:            test
tracksRegLiveness: true
stack:
  - { id: 0, type: variable-sized, offset: 0, alignment: 32,
      stack-id: default }
body:             |
  bb.0.entry:
    successors: %bb.2(0x40000000), %bb.1(0x40000000)
    liveins: $x0

    %22:gpr64common = COPY $x0
    CBZW $wzr, %bb.2

  bb.1:
    successors: %bb.3(0x80000000)

    %1:gpr64 = COPY $xzr
    B %bb.3

  bb.2:
    successors: %bb.3(0x80000000)

    $x0 = IMPLICIT_DEF
    %1:gpr64 = COPY $x0

  bb.3:
    successors: %bb.4(0x30000000), %bb.5(0x50000000)

    %2:gpr64common = COPY %1
    CBNZX %1, %bb.5
    B %bb.4

  bb.4:
    successors: %bb.5(0x80000000)

    %31:gpr64common = SUBXri $sp, 288, 0
    $sp = ANDXri %31, 7930
    %2:gpr64common = COPY $xzr

  bb.5:
    successors: %bb.6(0x80000000)

    %9:gpr64common = COPY $xzr
    %35:gpr64sp = ADDXri %2, 32, 0
    %4:gpr64common = UBFMXri %2, 3, 63
    %37:gpr64 = MOVi64imm -506381209866536712
    %38:gpr32 = MOVi32imm -202116109
    %39:gpr64common = nuw ADDXri %22, 836, 0
    %41:gpr64common = nuw ADDXri %22, 648, 0
    STRXui %37, %4, 1
    STRWui %38, %4, 8
    %8:gpr64common = UBFMXri %39, 3, 63
    %7:gpr64common = UBFMXri %41, 3, 63
    %47:gpr64 = MOVi64imm 0

  bb.6:
    successors: %bb.8(0x30000000), %bb.7(0x50000000)

    %44:gpr64common = ADDXrr %22, %9
    %10:gpr64common = ADDXri %44, 648, 0
    %11:gpr64common = ANDSXri %10, 4098, implicit-def $nzcv
    Bcc 0, %bb.8, implicit killed $nzcv
    B %bb.7

  bb.7:
    successors: %bb.8(0x80000000)

    BL 0, csr_aarch64_aapcs, implicit-def dead $lr

  bb.8:
    successors: %bb.9(0x04000000), %bb.24(0x7c000000)

    CBNZW $wzr, %bb.24
    B %bb.9

  bb.9:
    successors: %bb.10(0x7ffff800), %bb.11(0x00000800)

    %55:gpr64common = ADDXrr %22, %9
    %56:gpr64sp = ADDXri %55, 648, 0
    CBZX %11, %bb.10
    B %bb.11

  bb.10:
    successors: %bb.11(0x80000000)

    $x0 = ADDXri %55, 648, 0
    $x2 = IMPLICIT_DEF
    $w1 = COPY $wzr
    $x1 = nuw ADDXri %35, 32, 0
    BL 0, csr_aarch64_aapcs, implicit-def dead $lr
    %66:gpr64sp = nuw ADDXri %35, 48, 0
    $x0 = ADDXri %55, 696, 0
    $x2 = IMPLICIT_DEF
    $x1 = COPY %66

  bb.11:
    successors: %bb.15(0x7ffff800), %bb.12(0x00000800)

    CBZX %11, %bb.15
    B %bb.12

  bb.12:
    successors: %bb.13(0x00000000), %bb.14(0x80000000)

    CBNZW $wzr, %bb.14
    B %bb.13

  bb.13:
    successors:

  bb.14:
    successors: %bb.18(0x80000000)

    $x1 = COPY %56
    B %bb.18

  bb.15:
    successors: %bb.16(0x00000000), %bb.17(0x80000000)

    %76:gpr32 = LDRBBui %7, 0
    CBZW %76, %bb.17
    B %bb.16

  bb.16:
    successors:

    %74:gpr64common = ADDXrr %22, %9
    %15:gpr64sp = ADDXri %74, 648, 0
    $x0 = COPY %15

  bb.17:
    successors: %bb.18(0x80000000)

    STRXui %22, %55, 81

  bb.18:
    successors: %bb.19(0x80000000), %bb.20(0x00000000)

    %79:gpr32 = LDRBBui %8, 0
    CBNZW %79, %bb.20
    B %bb.19

  bb.19:
    successors: %bb.21(0x80000000), %bb.20(0x00000000)

    %80:gpr32 = MOVi32imm 1
    CBNZW %80, %bb.21
    B %bb.20

  bb.20:
    successors:

    %16:gpr64sp = ADDXri %22, 836, 0
    $x0 = COPY %16

  bb.21:
    successors: %bb.24(0x00000000), %bb.22(0x80000000)

    CBZW $wzr, %bb.24

  bb.22:
    successors: %bb.26(0x80000000)

    B %bb.26

  bb.24:
    successors: %bb.25(0x04000000), %bb.6(0x7c000000)

    %8:gpr64common = ADDXri %8, 24, 0
    %7:gpr64common = ADDXri %7, 24, 0
    CBNZW $wzr, %bb.6

  bb.25:
    successors: %bb.26(0x80000000)

    %56:gpr64sp = COPY $xzr

  bb.26:
    successors: %bb.28(0x50000000), %bb.27(0x30000000)

    undef %83.sub_32:gpr64 = MOVi32imm 1172321806
    STRXui %83, %2, 0
    CBNZX %1, %bb.28
    B %bb.27

  bb.27:
    successors: %bb.28(0x80000000)

    STRXui $xzr, %4, 0

  bb.28:
    $x0 = COPY %56
    RET_ReallyLR implicit $x0

...