test/CodeGen/AArch64/GlobalISel/subreg-copy.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=aarch64-unknown-unknown -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
---
name:              test_128_fpr_truncation
alignment:         4
legalized:         true
regBankSelected:   true
tracksRegLiveness: true
body: |
  ; CHECK-LABEL: name: test_128_fpr_truncation
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.1(0x80000000)
  ; CHECK:   liveins: $x0
  ; CHECK:   [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
  ; CHECK:   [[LDRQui:%[0-9]+]]:fpr128 = LDRQui [[COPY]], 0 :: (load 16)
  ; CHECK:   [[COPY1:%[0-9]+]]:gpr32all = COPY [[LDRQui]].ssub
  ; CHECK:   [[COPY2:%[0-9]+]]:gpr32 = COPY [[COPY1]]
  ; CHECK:   TBNZW [[COPY2]], 0, %bb.1
  ; CHECK: bb.1:
  ; CHECK:   RET_ReallyLR
  bb.0:
    liveins: $x0
    %1:gpr(p0) = COPY $x0
    %3:gpr(s64) = G_CONSTANT i64 1
    %5:gpr(s64) = G_CONSTANT i64 0
    %0:fpr(s128) = G_LOAD %1:gpr(p0) :: (load 16)
    %2:fpr(s64) = G_TRUNC %0:fpr(s128)
    %8:gpr(s64) = COPY %2:fpr(s64)
    %4:gpr(s64) = G_AND %8:gpr, %3:gpr
    %7:gpr(s32) = G_ICMP intpred(ne), %4:gpr(s64), %5:gpr
    %6:gpr(s1) = G_TRUNC %7:gpr(s32)
    G_BRCOND %6:gpr(s1), %bb.1

  bb.1:
    RET_ReallyLR
...
---
name:              no_trunc
alignment:         4
legalized:         true
regBankSelected:   true
tracksRegLiveness: true
body: |
  ; CHECK-LABEL: name: no_trunc
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.1(0x80000000)
  ; CHECK:   liveins: $x0
  ; CHECK:   [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
  ; CHECK:   [[LDRQui:%[0-9]+]]:fpr128 = LDRQui [[COPY]], 0 :: (load 16)
  ; CHECK:   [[COPY1:%[0-9]+]]:gpr64all = COPY [[LDRQui]].dsub
  ; CHECK:   [[COPY2:%[0-9]+]]:gpr64 = COPY [[COPY1]]
  ; CHECK:   TBNZX [[COPY2]], 33, %bb.1
  ; CHECK: bb.1:
  ; CHECK:   RET_ReallyLR
  bb.0:
    liveins: $x0
    %1:gpr(p0) = COPY $x0
    %3:gpr(s64) = G_CONSTANT i64 8589934592
    %5:gpr(s64) = G_CONSTANT i64 0
    %0:fpr(s128) = G_LOAD %1:gpr(p0) :: (load 16)
    %2:fpr(s64) = G_TRUNC %0:fpr(s128)
    %8:gpr(s64) = COPY %2:fpr(s64)
    %4:gpr(s64) = G_AND %8:gpr, %3:gpr
    %7:gpr(s32) = G_ICMP intpred(ne), %4:gpr(s64), %5:gpr
    %6:gpr(s1) = G_TRUNC %7:gpr(s32)
    G_BRCOND %6:gpr(s1), %bb.1
  bb.1:
    RET_ReallyLR