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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
# RUN: llc -mtriple=aarch64 -run-pass machinelicm -verify-machineinstrs -o - %s | FileCheck %s
# RUN: llc -mtriple=aarch64 -passes machinelicm -o - %s | FileCheck %s
---
name: unsafe_to_move
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: unsafe_to_move
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: liveins: $x0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $x16 = COPY killed $x0
; CHECK-NEXT: B %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: liveins: $x16
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $x1 = COPY killed $x16
; CHECK-NEXT: $x2 = MOVi64imm 1024, implicit-def dead $x16
; CHECK-NEXT: $x16 = LDRXroX killed $x1, killed $x2, 0, 0
; CHECK-NEXT: $xzr = SUBSXri $x16, 0, 0, implicit-def $nzcv
; CHECK-NEXT: Bcc 1, %bb.1, implicit $nzcv
; CHECK-NEXT: B %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: liveins: $x1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $x0 = COPY killed $x1
; CHECK-NEXT: RET_ReallyLR
bb.0:
liveins: $x0
$x16 = COPY killed $x0
B %bb.1
bb.1:
liveins: $x16
$x1 = COPY killed $x16
/* MOVi64imm below mimics a pseudo instruction that doesn't have any */
/* unmodelled side effects, but uses x16 as a scratch register. */
$x2 = MOVi64imm 1024, implicit-def dead $x16
$x16 = LDRXroX killed $x1, killed $x2, 0, 0
$xzr = SUBSXri $x16, 0, 0, implicit-def $nzcv
Bcc 1, %bb.1, implicit $nzcv
B %bb.2
bb.2:
liveins: $x1
$x0 = COPY killed $x1
RET_ReallyLR
...
---
name: dead_implicit_def
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: dead_implicit_def
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: liveins: $x0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $x12 = COPY killed $x0
; CHECK-NEXT: $x2 = MOVi64imm 1024, implicit-def dead $x16
; CHECK-NEXT: B %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: liveins: $x12, $x2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $x1 = COPY killed $x12
; CHECK-NEXT: $x16 = LDRXroX killed $x1, $x2, 0, 0
; CHECK-NEXT: $xzr = SUBSXri $x16, 0, 0, implicit-def $nzcv
; CHECK-NEXT: Bcc 1, %bb.1, implicit $nzcv
; CHECK-NEXT: B %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: liveins: $x1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $x0 = COPY killed $x1
; CHECK-NEXT: RET_ReallyLR
bb.0:
liveins: $x0
$x12 = COPY killed $x0
B %bb.1
bb.1:
liveins: $x12
$x1 = COPY killed $x12
/* MOVi64imm below mimics a pseudo instruction that doesn't have any */
/* unmodelled side effects, but uses x16 as a scratch register. */
$x2 = MOVi64imm 1024, implicit-def dead $x16
$x16 = LDRXroX killed $x1, killed $x2, 0, 0
$xzr = SUBSXri $x16, 0, 0, implicit-def $nzcv
Bcc 1, %bb.1, implicit $nzcv
B %bb.2
bb.2:
liveins: $x1
$x0 = COPY killed $x1
RET_ReallyLR
...
|
