llvm/test/CodeGen/AArch64/GlobalISel/preselect-process-phis.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -verify-machineinstrs -mtriple aarch64--- -run-pass=instruction-select -global-isel %s -o - | FileCheck %s
---
name:            test_loop_phi_fpr_to_gpr
alignment:       4
legalized:       true
regBankSelected: true
selected:        false
failedISel:      false
tracksRegLiveness: true
liveins:         []
machineFunctionInfo: {}
body:             |
  ; CHECK-LABEL: name: test_loop_phi_fpr_to_gpr
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.1(0x80000000)
  ; CHECK:   [[DEF:%[0-9]+]]:gpr32 = IMPLICIT_DEF
  ; CHECK:   [[DEF1:%[0-9]+]]:gpr64common = IMPLICIT_DEF
  ; CHECK:   [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 2143289344
  ; CHECK:   [[COPY:%[0-9]+]]:fpr32 = COPY [[MOVi32imm]]
  ; CHECK: bb.1:
  ; CHECK:   successors: %bb.2(0x80000000)
  ; CHECK:   [[DEF2:%[0-9]+]]:gpr32 = IMPLICIT_DEF
  ; CHECK:   [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri [[DEF]], 0, implicit-def $nzcv
  ; CHECK:   [[CSELWr:%[0-9]+]]:gpr32 = CSELWr [[DEF2]], [[DEF2]], 1, implicit $nzcv
  ; CHECK: bb.2:
  ; CHECK:   successors: %bb.2(0x80000000)
  ; CHECK:   [[PHI:%[0-9]+]]:gpr32 = PHI [[CSELWr]], %bb.1, %8, %bb.2
  ; CHECK:   [[FCVTHSr:%[0-9]+]]:fpr16 = FCVTHSr [[COPY]]
  ; CHECK:   [[SUBREG_TO_REG:%[0-9]+]]:fpr32 = SUBREG_TO_REG 0, [[FCVTHSr]], %subreg.hsub
  ; CHECK:   [[COPY1:%[0-9]+]]:gpr32all = COPY [[SUBREG_TO_REG]]
  ; CHECK:   STRHHui [[PHI]], [[DEF1]], 0 :: (store (s16) into `half* undef`)
  ; CHECK:   B %bb.2
  bb.0:
    successors: %bb.1(0x80000000)

    %0:gpr(s1) = G_IMPLICIT_DEF
    %4:gpr(p0) = G_IMPLICIT_DEF
    %8:fpr(s32) = G_FCONSTANT float 0x7FF8000000000000

  bb.1:
    successors: %bb.2(0x80000000)

    %6:gpr(s32) = G_IMPLICIT_DEF
    %7:gpr(s32) = G_SELECT %0(s1), %6, %6
    %1:gpr(s16) = G_TRUNC %7(s32)

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

    %3:gpr(s16) = G_PHI %1(s16), %bb.1, %5(s16), %bb.2
    %5:fpr(s16) = G_FPTRUNC %8(s32)
    G_STORE %3(s16), %4(p0) :: (store (s16) into `half* undef`)
    G_BR %bb.2

...
---
name:            test_loop_phi_gpr_to_fpr
alignment:       4
legalized:       true
regBankSelected: true
selected:        false
failedISel:      false
tracksRegLiveness: true
liveins:         []
machineFunctionInfo: {}
body:             |
  ; CHECK-LABEL: name: test_loop_phi_gpr_to_fpr
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.1(0x80000000)
  ; CHECK:   [[DEF:%[0-9]+]]:gpr32 = IMPLICIT_DEF
  ; CHECK:   [[DEF1:%[0-9]+]]:gpr64common = IMPLICIT_DEF
  ; CHECK:   [[MOVi32imm:%[0-9]+]]:gpr32 = MOVi32imm 2143289344
  ; CHECK:   [[COPY:%[0-9]+]]:fpr32 = COPY [[MOVi32imm]]
  ; CHECK: bb.1:
  ; CHECK:   successors: %bb.2(0x80000000)
  ; CHECK:   [[DEF2:%[0-9]+]]:gpr32 = IMPLICIT_DEF
  ; CHECK:   [[ANDSWri:%[0-9]+]]:gpr32 = ANDSWri [[DEF]], 0, implicit-def $nzcv
  ; CHECK:   [[CSELWr:%[0-9]+]]:gpr32 = CSELWr [[DEF2]], [[DEF2]], 1, implicit $nzcv
  ; CHECK:   [[COPY1:%[0-9]+]]:fpr32 = COPY [[CSELWr]]
  ; CHECK:   [[COPY2:%[0-9]+]]:fpr16 = COPY [[COPY1]].hsub
  ; CHECK: bb.2:
  ; CHECK:   successors: %bb.2(0x80000000)
  ; CHECK:   [[PHI:%[0-9]+]]:fpr16 = PHI %7, %bb.2, [[COPY2]], %bb.1
  ; CHECK:   [[FCVTHSr:%[0-9]+]]:fpr16 = FCVTHSr [[COPY]]
  ; CHECK:   STRHui [[PHI]], [[DEF1]], 0 :: (store (s16) into `half* undef`)
  ; CHECK:   B %bb.2
  bb.0:
    successors: %bb.1(0x80000000)

    %0:gpr(s1) = G_IMPLICIT_DEF
    %4:gpr(p0) = G_IMPLICIT_DEF
    %8:fpr(s32) = G_FCONSTANT float 0x7FF8000000000000

  bb.1:
    successors: %bb.2(0x80000000)

    %6:gpr(s32) = G_IMPLICIT_DEF
    %7:gpr(s32) = G_SELECT %0(s1), %6, %6
    %1:gpr(s16) = G_TRUNC %7(s32)

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

    %3:fpr(s16) = G_PHI %5(s16), %bb.2, %1(s16), %bb.1
    %5:fpr(s16) = G_FPTRUNC %8(s32)
    G_STORE %3(s16), %4(p0) :: (store (s16) into `half* undef`)
    G_BR %bb.2

...
---
name:            multiple_phis
alignment:       4
legalized:       true
regBankSelected: true
tracksRegLiveness: true
body:             |

  ; The copy we insert in bb.4 should appear after all the phi instructions.

  ; CHECK-LABEL: name: multiple_phis
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.1(0x40000000), %bb.5(0x40000000)
  ; CHECK:   liveins: $w0, $w1, $x2
  ; CHECK:   %ptr:gpr64sp = COPY $x2
  ; CHECK:   %cond_1:gpr32 = IMPLICIT_DEF
  ; CHECK:   %gpr_1:gpr32 = IMPLICIT_DEF
  ; CHECK:   [[COPY:%[0-9]+]]:fpr32 = COPY %gpr_1
  ; CHECK:   [[COPY1:%[0-9]+]]:fpr16 = COPY [[COPY]].hsub
  ; CHECK:   TBNZW %cond_1, 0, %bb.5
  ; CHECK:   B %bb.1
  ; CHECK: bb.1:
  ; CHECK:   successors: %bb.2(0x40000000), %bb.3(0x40000000)
  ; CHECK:   %cond_2:gpr32 = IMPLICIT_DEF
  ; CHECK:   TBNZW %cond_2, 0, %bb.3
  ; CHECK:   B %bb.2
  ; CHECK: bb.2:
  ; CHECK:   successors: %bb.4(0x80000000)
  ; CHECK:   %gpr_2:gpr32 = IMPLICIT_DEF
  ; CHECK:   B %bb.4
  ; CHECK: bb.3:
  ; CHECK:   successors: %bb.4(0x80000000)
  ; CHECK:   %fpr:fpr16 = IMPLICIT_DEF
  ; CHECK: bb.4:
  ; CHECK:   successors: %bb.5(0x80000000)
  ; CHECK:   %fp_phi:fpr16 = PHI %fpr, %bb.3, [[COPY1]], %bb.2
  ; CHECK:   %gp_phi1:gpr32 = PHI %gpr_1, %bb.3, %gpr_2, %bb.2
  ; CHECK:   %gp_phi2:gpr32 = PHI %gpr_1, %bb.3, %gpr_2, %bb.2
  ; CHECK:   %gp_phi3:gpr32 = PHI %gpr_1, %bb.3, %gpr_2, %bb.2
  ; CHECK:   [[SUBREG_TO_REG:%[0-9]+]]:fpr32 = SUBREG_TO_REG 0, %fp_phi, %subreg.hsub
  ; CHECK:   [[COPY2:%[0-9]+]]:gpr32all = COPY [[SUBREG_TO_REG]]
  ; CHECK: bb.5:
  ; CHECK:   %use_fp_phi:gpr32 = PHI %gpr_1, %bb.0, [[COPY2]], %bb.4
  ; CHECK:   %use_gp_phi1:gpr32 = PHI %gpr_1, %bb.0, %gp_phi1, %bb.4
  ; CHECK:   %use_gp_phi2:gpr32 = PHI %gpr_1, %bb.0, %gp_phi2, %bb.4
  ; CHECK:   %use_gp_phi3:gpr32 = PHI %gpr_1, %bb.0, %gp_phi3, %bb.4
  ; CHECK:   STRHHui %use_fp_phi, %ptr, 0 :: (store (s16))
  ; CHECK:   STRHHui %use_gp_phi1, %ptr, 0 :: (store (s16))
  ; CHECK:   STRHHui %use_gp_phi2, %ptr, 0 :: (store (s16))
  ; CHECK:   STRHHui %use_gp_phi3, %ptr, 0 :: (store (s16))
  ; CHECK:   RET_ReallyLR
  bb.1:
    successors: %bb.2, %bb.6
    liveins: $w0, $w1, $x2
    %ptr:gpr(p0) = COPY $x2
    %cond_1:gpr(s1) = G_IMPLICIT_DEF
    %gpr_1:gpr(s16) = G_IMPLICIT_DEF
    G_BRCOND %cond_1(s1), %bb.6
    G_BR %bb.2
  bb.2:
    successors: %bb.3, %bb.4
    %cond_2:gpr(s1) = G_IMPLICIT_DEF
    G_BRCOND %cond_2(s1), %bb.4
    G_BR %bb.3
  bb.3:
    %gpr_2:gpr(s16) = G_IMPLICIT_DEF
    G_BR %bb.5
  bb.4:
    %fpr:fpr(s16) = G_IMPLICIT_DEF
  bb.5:
    %fp_phi:fpr(s16) = G_PHI %fpr(s16), %bb.4, %gpr_1(s16), %bb.3
    %gp_phi1:gpr(s16) = G_PHI %gpr_1(s16), %bb.4, %gpr_2(s16), %bb.3
    %gp_phi2:gpr(s16) = G_PHI %gpr_1(s16), %bb.4, %gpr_2(s16), %bb.3
    %gp_phi3:gpr(s16) = G_PHI %gpr_1(s16), %bb.4, %gpr_2(s16), %bb.3
  bb.6:
    %use_fp_phi:gpr(s16) = G_PHI %gpr_1(s16), %bb.1, %fp_phi(s16), %bb.5
    %use_gp_phi1:gpr(s16) = G_PHI %gpr_1(s16), %bb.1, %gp_phi1(s16), %bb.5
    %use_gp_phi2:gpr(s16) = G_PHI %gpr_1(s16), %bb.1, %gp_phi2(s16), %bb.5
    %use_gp_phi3:gpr(s16) = G_PHI %gpr_1(s16), %bb.1, %gp_phi3(s16), %bb.5
    G_STORE %use_fp_phi(s16), %ptr(p0) :: (store (s16))
    G_STORE %use_gp_phi1(s16), %ptr(p0) :: (store (s16))
    G_STORE %use_gp_phi2(s16), %ptr(p0) :: (store (s16))
    G_STORE %use_gp_phi3(s16), %ptr(p0) :: (store (s16))
    RET_ReallyLR
...