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|
# Strip out debug info, then run ldst-opt with limit=1.
# RUN: llc -aarch64-load-store-scan-limit=1 -mtriple=aarch64-none-linux-gnu -run-pass mir-strip-debug,aarch64-ldst-opt -mir-strip-debugify-only=0 -verify-machineinstrs -o - %s | FileCheck %s
#
# Run ldst-opt with limit=1, then strip out debug info.
# RUN: llc -aarch64-load-store-scan-limit=1 -mtriple=aarch64-none-linux-gnu -run-pass aarch64-ldst-opt,mir-strip-debug -mir-strip-debugify-only=0 -verify-machineinstrs -o - %s | FileCheck %s
---
### STG and its offset limits
# CHECK-LABEL: name: test_STG_post
# CHECK: STGPostIndex $x0, $x0, 7
name: test_STG_post
body: |
bb.0.entry:
liveins: $x0
STGOffset $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 112, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STG_post_same_reg
# CHECK: STGPostIndex $x1, $x0, 7
name: test_STG_post_same_reg
body: |
bb.0.entry:
liveins: $x0, $x1
STGOffset $x1, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 112, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STG_post_unaligned
# CHECK: STGOffset $x0, $x0, 0
# CHECK-NEXT: ADDXri $x0, 8, 0
name: test_STG_post_unaligned
body: |
bb.0.entry:
liveins: $x0
STGOffset $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 8, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STG_post2
# CHECK: STGPostIndex $x0, $x0, -256
name: test_STG_post2
body: |
bb.0.entry:
liveins: $x0
STGOffset $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = SUBXri $x0, 4096, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STG_post3
# CHECK: STGOffset $x0, $x0, 0
# CHECK-NEXT: SUBXri $x0, 4112, 0
name: test_STG_post3
body: |
bb.0.entry:
liveins: $x0
STGOffset $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = SUBXri $x0, 4112, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STG_post4
# CHECK: STGPostIndex $x0, $x0, 255
name: test_STG_post4
body: |
bb.0.entry:
liveins: $x0
STGOffset $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 4080, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STG_post5
# CHECK: STGOffset $x0, $x0, 0
# CHECK-NEXT: ADDXri $x0, 4096, 0
name: test_STG_post5
body: |
bb.0.entry:
liveins: $x0
STGOffset $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 4096, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
### The rest of ST*G variants.
# CHECK-LABEL: name: test_STZG_post
# CHECK: STZGPostIndex $x0, $x0, 7
name: test_STZG_post
body: |
bb.0.entry:
liveins: $x0
STZGOffset $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 112, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_ST2G_post
# CHECK: ST2GPostIndex $x0, $x0, 7
name: test_ST2G_post
body: |
bb.0.entry:
liveins: $x0
ST2GOffset $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 112, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STZ2G_post
# CHECK: STZ2GPostIndex $x0, $x0, 7
name: test_STZ2G_post
body: |
bb.0.entry:
liveins: $x0
STZ2GOffset $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 112, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
### STGP and its offset limits
# CHECK-LABEL: name: test_STGP_post
# CHECK: STGPpost $x1, $x2, $x0, 7
name: test_STGP_post
body: |
bb.0.entry:
liveins: $x0, $x1, $x2
STGPi $x1, $x2, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 112, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STGP_post2
# CHECK: STGPpost $x1, $x2, $x0, -64
name: test_STGP_post2
body: |
bb.0.entry:
liveins: $x0, $x1, $x2
STGPi $x1, $x2, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = SUBXri $x0, 1024, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STGP_post3
# CHECK: STGPi $x1, $x2, $x0, 0
# CHECK-NEXT: SUBXri $x0, 1040, 0
name: test_STGP_post3
body: |
bb.0.entry:
liveins: $x0, $x1, $x2
STGPi $x1, $x2, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = SUBXri $x0, 1040, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STGP_post4
# CHECK: STGPpost $x1, $x2, $x0, 63
name: test_STGP_post4
body: |
bb.0.entry:
liveins: $x0, $x1, $x2
STGPi $x1, $x2, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 1008, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STGP_post5
# CHECK: STGPi $x1, $x2, $x0, 0
# CHECK-NEXT: ADDXri $x0, 1024, 0
name: test_STGP_post5
body: |
bb.0.entry:
liveins: $x0, $x1, $x2
STGPi $x1, $x2, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 1024, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
### Pre-indexed forms
# CHECK-LABEL: name: test_STG_pre
# CHECK: STGPreIndex $x0, $x0, 10
name: test_STG_pre
body: |
bb.0.entry:
liveins: $x0
STGOffset $x0, $x0, 10
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 160, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STGP_pre
# CHECK: STGPpre $x1, $x2, $x0, 10
name: test_STGP_pre
body: |
bb.0.entry:
liveins: $x0, $x1, $x2
STGPi $x1, $x2, $x0, 10
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 160, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
### Pre-indexed forms with add/sub coming before the store.
# CHECK-LABEL: name: test_STG_pre_back
# CHECK: STGPreIndex $x0, $x0, 2
name: test_STG_pre_back
body: |
bb.0.entry:
liveins: $x0
$x0 = ADDXri $x0, 32, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
STGOffset $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STGP_pre_back
# CHECK: STGPpre $x1, $x2, $x0, -3
name: test_STGP_pre_back
body: |
bb.0.entry:
liveins: $x0, $x1, $x2
$x0 = SUBXri $x0, 48, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
STGPi $x1, $x2, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
### STGP with source register == address register
# CHECK-LABEL: name: test_STGP_post_same_reg
# CHECK: STGPpost $x0, $x0, $x0, 7
name: test_STGP_post_same_reg
body: |
bb.0.entry:
liveins: $x0
STGPi $x0, $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 112, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# CHECK-LABEL: name: test_STGP_pre_same_reg
# CHECK: STGPpre $x0, $x0, $x0, 7
name: test_STGP_pre_same_reg
body: |
bb.0.entry:
liveins: $x0
STGPi $x0, $x0, $x0, 7
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
$x0 = ADDXri $x0, 112, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
# This case can not be merged because the source register is always read before writeback.
# CHECK-LABEL: name: test_STGP_pre_back_same_reg
# CHECK: SUBXri $x0, 48, 0
# CHECK-NEXT: STGPi $x0, $x0, $x0, 0
name: test_STGP_pre_back_same_reg
body: |
bb.0.entry:
liveins: $x0
$x0 = SUBXri $x0, 48, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
STGPi $x0, $x0, $x0, 0
DBG_VALUE $x0, 0
DBG_VALUE $x0, 0
RET_ReallyLR implicit $x0
...
|
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