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# RUN: llc -run-pass=aarch64-ldst-opt -aarch64-load-store-renaming=true -mattr=+reserve-x10 \
# RUN: -mattr=+reserve-x11 -mattr=+reserve-x15 -mtriple=arm64-apple-iphoneos -verify-machineinstrs \
# RUN: -o - %s | FileCheck --check-prefix=CHECK --check-prefix=PRESERVED %s
# RUN: llc -run-pass=aarch64-ldst-opt -aarch64-load-store-renaming=true -mtriple=arm64-apple-iphoneos \
# RUN: -verify-machineinstrs -o - %s | FileCheck --check-prefix=CHECK --check-prefix=NOPRES %s
# Make sure we do not pick reserved registers. For test1, we would pick x10,
# and for test2 we would pick x15, both of which are reserved.
#
---
# CHECK-LABEL: name: test1
# CHECK: bb.0:
# CHECK-NEXT: liveins: $x0, $x1
# PRESERVED: $x12, renamable $x8 = LDPXi renamable $x0, 0 :: (load 8)
# NOPRES: $x10, renamable $x8 = LDPXi renamable $x0, 0 :: (load 8)
# CHECK-NEXT: renamable $x9 = LDRXui renamable $x0, 1 :: (load 8)
# CHECK-NEXT: STRXui renamable $x9, renamable $x0, 100 :: (store 8, align 4)
# CHECK-NEXT: renamable $x8 = ADDXrr $x8, $x8
# PRESERVED-NEXT: STPXi renamable $x8, killed $x12, renamable $x0, 10 :: (store 8, align 4)
# NOPRES-NEXT: STPXi renamable $x8, killed $x10, renamable $x0, 10 :: (store 8, align 4)
# CHECK-NEXT: RET undef $lr
name: test1
alignment: 4
tracksRegLiveness: true
liveins:
- { reg: '$x0' }
- { reg: '$x1' }
- { reg: '$x8' }
frameInfo:
maxAlignment: 1
maxCallFrameSize: 0
machineFunctionInfo: {}
body: |
bb.0:
liveins: $x0, $x1
renamable $x9, renamable $x8 = LDPXi renamable $x0, 0 :: (load 8)
STRXui renamable killed $x9, renamable $x0, 11 :: (store 8, align 4)
renamable $x9 = LDRXui renamable $x0, 1 :: (load 8)
STRXui renamable $x9, renamable $x0, 100 :: (store 8, align 4)
renamable $x8 = ADDXrr $x8, $x8
STRXui renamable $x8, renamable $x0, 10 :: (store 8, align 4)
RET undef $lr
...
# CHECK-LABEL: name: test2
# CHECK: bb.0:
# CHECK-NEXT: liveins: $x0, $x1, $x10, $x11, $x12, $x13
# CHECK: renamable $w19 = LDRWui renamable $x0, 0 :: (load 8)
# PRESERVED-NEXT: $x18, renamable $x8 = LDPXi renamable $x0, 1 :: (load 8)
# NOPRES-NEXT: $x15, renamable $x8 = LDPXi renamable $x0, 1 :: (load 8)
# CHECK-NEXT: renamable $x9 = LDRXui renamable $x0, 3 :: (load 8)
# CHECK-NEXT: renamable $x14 = LDRXui renamable $x0, 5 :: (load 8)
# PRESERVED-NEXT: STPXi renamable $x9, killed $x18, renamable $x0, 10 :: (store 8, align 4)
# NOPRES-NEXT: STPXi renamable $x9, killed $x15, renamable $x0, 10 :: (store 8, align 4)
# CHECK-NEXT: STRXui killed renamable $x14, renamable $x0, 200 :: (store 8, align 4)
# CHECK-NEXT: renamable $w8 = ADDWrr $w19, $w19
# CHECK-NEXT: STRWui renamable $w8, renamable $x0, 100 :: (store 8, align 4)
# CHECK-NEXT: RET undef $lr
#
name: test2
alignment: 4
tracksRegLiveness: true
liveins:
- { reg: '$x0' }
- { reg: '$x1' }
- { reg: '$x8' }
frameInfo:
maxAlignment: 1
maxCallFrameSize: 0
machineFunctionInfo: {}
body: |
bb.0:
liveins: $x0, $x1, $x10, $x11, $x12, $x13
renamable $w19 = LDRWui renamable $x0, 0 :: (load 8)
renamable $x9, renamable $x8 = LDPXi renamable $x0, 1 :: (load 8)
STRXui renamable killed $x9, renamable $x0, 11 :: (store 8, align 4)
renamable $x9 = LDRXui renamable $x0, 3 :: (load 8)
renamable $x14 = LDRXui renamable $x0, 5 :: (load 8)
STRXui renamable $x9, renamable $x0, 10 :: (store 8, align 4)
STRXui renamable killed $x14, renamable $x0, 200 :: (store 8, align 4)
renamable $w8 = ADDWrr $w19, $w19
STRWui renamable $w8, renamable $x0, 100 :: (store 8, align 4)
RET undef $lr
...
---
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