# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=aarch64 -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
...
---
name: fold
legalized: true
regBankSelected: true
tracksRegLiveness: true
body: |
bb.0:
liveins: $w0, $w1
; This should not have an UBFMXri, since ADDWrr implicitly gives us the
; zext.
; CHECK-LABEL: name: fold
; CHECK: liveins: $w0, $w1
; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w0
; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY $w1
; CHECK: [[ADDWrr:%[0-9]+]]:gpr32 = ADDWrr [[COPY1]], [[COPY]]
; CHECK: [[SUBREG_TO_REG:%[0-9]+]]:gpr64 = SUBREG_TO_REG 0, [[ADDWrr]], %subreg.sub_32
; CHECK: $x0 = COPY [[SUBREG_TO_REG]]
; CHECK: RET_ReallyLR implicit $x0
%0:gpr(s32) = COPY $w0
%1:gpr(s32) = COPY $w1
%2:gpr(s32) = G_ADD %1, %0
%3:gpr(s64) = G_ZEXT %2(s32)
$x0 = COPY %3(s64)
RET_ReallyLR implicit $x0
...
---
name: dont_fold_s16
legalized: true
regBankSelected: true
tracksRegLiveness: true
body: |
bb.0:
liveins: $w0, $w1
; We should have a UBFMXri here, because we only do this for zero extends
; from 32 bits to 64 bits.
; CHECK-LABEL: name: dont_fold_s16
; CHECK: liveins: $w0, $w1
; CHECK: [[DEF:%[0-9]+]]:gpr32 = IMPLICIT_DEF
; CHECK: [[SUBREG_TO_REG:%[0-9]+]]:gpr64 = SUBREG_TO_REG 0, [[DEF]], %subreg.sub_32
; CHECK: [[UBFMXri:%[0-9]+]]:gpr64 = UBFMXri [[SUBREG_TO_REG]], 0, 15
; CHECK: $x0 = COPY [[UBFMXri]]
; CHECK: RET_ReallyLR implicit $x0
%0:gpr(s16) = G_IMPLICIT_DEF
%3:gpr(s64) = G_ZEXT %0(s16)
$x0 = COPY %3(s64)
RET_ReallyLR implicit $x0
...
---
name: dont_fold_copy
legalized: true
regBankSelected: true
tracksRegLiveness: true
body: |
bb.0:
liveins: $w0
; We should have a ORRWrs here, because isDef32 disallows copies.
; CHECK-LABEL: name: dont_fold_copy
; CHECK: liveins: $w0
; CHECK: %copy:gpr32 = COPY $w0
; CHECK: [[ORRWrs:%[0-9]+]]:gpr32 = ORRWrs $wzr, %copy, 0
; CHECK: %zext:gpr64 = SUBREG_TO_REG 0, [[ORRWrs]], %subreg.sub_32
; CHECK: $x0 = COPY %zext
; CHECK: RET_ReallyLR implicit $x0
%copy:gpr(s32) = COPY $w0
%zext:gpr(s64) = G_ZEXT %copy(s32)
$x0 = COPY %zext(s64)
RET_ReallyLR implicit $x0
...
---
name: dont_fold_bitcast
legalized: true
regBankSelected: true
tracksRegLiveness: true
body: |
bb.0:
liveins: $w0
; We should have a ORRWrs here, because isDef32 disallows bitcasts.
; CHECK-LABEL: name: dont_fold_bitcast
; CHECK: liveins: $w0
; CHECK: %copy:gpr32all = COPY $w0
; CHECK: %bitcast1:gpr32 = COPY %copy
; CHECK: [[ORRWrs:%[0-9]+]]:gpr32 = ORRWrs $wzr, %bitcast1, 0
; CHECK: %zext:gpr64 = SUBREG_TO_REG 0, [[ORRWrs]], %subreg.sub_32
; CHECK: $x0 = COPY %zext
; CHECK: RET_ReallyLR implicit $x0
%copy:gpr(s32) = COPY $w0
%bitcast0:gpr(<4 x s8>) = G_BITCAST %copy(s32)
%bitcast1:gpr(s32) = G_BITCAST %bitcast0
%zext:gpr(s64) = G_ZEXT %bitcast1(s32)
$x0 = COPY %zext(s64)
RET_ReallyLR implicit $x0
...
---
name: dont_fold_trunc
legalized: true
regBankSelected: true
tracksRegLiveness: true
body: |
bb.0:
liveins: $x0
; We should have a ORRWrs here, because isDef32 disallows truncs.
; CHECK-LABEL: name: dont_fold_trunc
; CHECK: liveins: $x0
; CHECK: %copy:gpr64sp = COPY $x0
; CHECK: %trunc:gpr32common = COPY %copy.sub_32
; CHECK: [[ORRWrs:%[0-9]+]]:gpr32 = ORRWrs $wzr, %trunc, 0
; CHECK: %zext:gpr64 = SUBREG_TO_REG 0, [[ORRWrs]], %subreg.sub_32
; CHECK: $x0 = COPY %zext
; CHECK: RET_ReallyLR implicit $x0
%copy:gpr(s64) = COPY $x0
%trunc:gpr(s32) = G_TRUNC %copy(s64)
%zext:gpr(s64) = G_ZEXT %trunc(s32)
$x0 = COPY %zext(s64)
RET_ReallyLR implicit $x0
...
---
name: dont_fold_phi
legalized: true
regBankSelected: true
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: dont_fold_phi
; CHECK: bb.0:
; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK: liveins: $w0, $w1, $w2
; CHECK: %copy1:gpr32all = COPY $w0
; CHECK: %copy2:gpr32all = COPY $w1
; CHECK: %cond_wide:gpr32 = COPY $w2
; CHECK: TBNZW %cond_wide, 0, %bb.1
; CHECK: B %bb.2
; CHECK: bb.1:
; CHECK: successors: %bb.2(0x80000000)
; CHECK: bb.2:
; CHECK: %phi:gpr32 = PHI %copy1, %bb.0, %copy2, %bb.1
; CHECK: [[ORRWrs:%[0-9]+]]:gpr32 = ORRWrs $wzr, %phi, 0
; CHECK: [[SUBREG_TO_REG:%[0-9]+]]:gpr64 = SUBREG_TO_REG 0, [[ORRWrs]], %subreg.sub_32
; CHECK: $x0 = COPY [[SUBREG_TO_REG]]
; CHECK: RET_ReallyLR implicit $x0
; We should have a ORRWrs here, because isDef32 disallows phis.
bb.0:
liveins: $w0, $w1, $w2
%copy1:gpr(s32) = COPY $w0
%copy2:gpr(s32) = COPY $w1
%cond_wide:gpr(s32) = COPY $w2
G_BRCOND %cond_wide, %bb.1
G_BR %bb.2
bb.1:
bb.2:
%phi:gpr(s32) = G_PHI %copy1(s32), %bb.0, %copy2(s32), %bb.1
%5:gpr(s64) = G_ZEXT %phi(s32)
$x0 = COPY %5(s64)
RET_ReallyLR implicit $x0
...
---
name: dont_look_through_copy
legalized: true
regBankSelected: true
tracksRegLiveness: true
body: |
bb.0:
liveins: $w0, $w1
; Make sure we don't walk past the copy.
; CHECK-LABEL: name: dont_look_through_copy
; CHECK: liveins: $w0, $w1
; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w0
; CHECK: [[COPY1:%[0-9]+]]:gpr32 = COPY $w1
; CHECK: [[ADDWrr:%[0-9]+]]:gpr32 = ADDWrr [[COPY1]], [[COPY]]
; CHECK: [[ORRWrs:%[0-9]+]]:gpr32 = ORRWrs $wzr, [[ADDWrr]], 0
; CHECK: [[SUBREG_TO_REG:%[0-9]+]]:gpr64 = SUBREG_TO_REG 0, [[ORRWrs]], %subreg.sub_32
; CHECK: $x0 = COPY [[SUBREG_TO_REG]]
; CHECK: RET_ReallyLR implicit $x0
%0:gpr(s32) = COPY $w0
%1:gpr(s32) = COPY $w1
%2:gpr(s32) = G_ADD %1, %0
%3:gpr(s32) = COPY %2(s32)
%4:gpr(s64) = G_ZEXT %3(s32)
$x0 = COPY %4(s64)
RET_ReallyLR implicit $x0