mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 11:13:28 +01:00
d4c615be8c
Discussed here: http://lists.llvm.org/pipermail/llvm-dev/2018-January/120320.html In preparation for adding support for named vregs we are changing the sigil for physical registers in MIR to '$' from '%'. This will prevent name clashes of named physical register with named vregs. llvm-svn: 323922
611 lines
12 KiB
YAML
611 lines
12 KiB
YAML
# RUN: llc -mtriple=aarch64--linux-gnu -run-pass=aarch64-copyelim %s -verify-machineinstrs -o - | FileCheck %s
|
|
---
|
|
# Check that bb.0 COPY is seen through to allow the bb.1 COPY of XZR to be removed.
|
|
# CHECK-LABEL: name: test1
|
|
# CHECK-NOT: COPY $xzr
|
|
name: test1
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
liveins: $x0, $x1
|
|
|
|
$x0 = COPY $x1
|
|
CBNZX $x1, %bb.2
|
|
|
|
bb.1:
|
|
$x0 = COPY $xzr
|
|
B %bb.3
|
|
|
|
bb.2:
|
|
liveins: $x1
|
|
|
|
$x0 = LDRXui $x1, 0
|
|
|
|
bb.3:
|
|
liveins: $x0
|
|
|
|
RET_ReallyLR implicit $x0
|
|
|
|
...
|
|
# Similar to test1, but with reversed COPY.
|
|
# CHECK-LABEL: name: test2
|
|
# CHECK-NOT: COPY $xzr
|
|
name: test2
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
liveins: $x0, $x1
|
|
|
|
$x1 = COPY $x0
|
|
CBNZX $x1, %bb.2
|
|
|
|
bb.1:
|
|
$x0 = COPY $xzr
|
|
B %bb.3
|
|
|
|
bb.2:
|
|
liveins: $x1
|
|
|
|
$x0 = LDRXui $x1, 0
|
|
|
|
bb.3:
|
|
liveins: $x0
|
|
|
|
RET_ReallyLR implicit $x0
|
|
|
|
...
|
|
# Similar to test1, but with a clobber that prevents removal of the XZR COPY.
|
|
# CHECK-LABEL: name: test3
|
|
# CHECK: COPY $xzr
|
|
name: test3
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
liveins: $x0, $x1, $x2
|
|
|
|
$x0 = COPY $x1
|
|
$x1 = LDRXui $x1, 0
|
|
CBNZX $x1, %bb.2
|
|
|
|
bb.1:
|
|
$x0 = COPY $xzr
|
|
B %bb.3
|
|
|
|
bb.2:
|
|
liveins: $x1
|
|
|
|
$x0 = LDRXui $x1, 0
|
|
|
|
bb.3:
|
|
liveins: $x0
|
|
|
|
RET_ReallyLR implicit $x0
|
|
|
|
...
|
|
# Similar to test2, but with a clobber that prevents removal of the XZR COPY.
|
|
# CHECK-LABEL: name: test4
|
|
# CHECK: COPY $xzr
|
|
name: test4
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
liveins: $x0, $x1, $x2
|
|
|
|
$x1 = COPY $x0
|
|
$x1 = LDRXui $x1, 0
|
|
CBNZX $x1, %bb.2
|
|
|
|
bb.1:
|
|
$x0 = COPY $xzr
|
|
B %bb.3
|
|
|
|
bb.2:
|
|
liveins: $x1
|
|
|
|
$x0 = LDRXui $x1, 0
|
|
|
|
bb.3:
|
|
liveins: $x0
|
|
|
|
RET_ReallyLR implicit $x0
|
|
|
|
...
|
|
# Similar to test2, but with a clobber that prevents removal of the XZR COPY.
|
|
# CHECK-LABEL: name: test5
|
|
# CHECK: COPY $xzr
|
|
name: test5
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
liveins: $x0, $x1, $x2
|
|
|
|
$x1 = COPY $x0
|
|
$x0 = LDRXui $x1, 0
|
|
CBNZX $x1, %bb.2
|
|
|
|
bb.1:
|
|
$x0 = COPY $xzr
|
|
B %bb.3
|
|
|
|
bb.2:
|
|
liveins: $x1
|
|
|
|
$x0 = LDRXui $x1, 0
|
|
|
|
bb.3:
|
|
liveins: $x0
|
|
|
|
RET_ReallyLR implicit $x0
|
|
|
|
...
|
|
# Similar to test1, but with two levels of COPYs.
|
|
# CHECK-LABEL: name: test6
|
|
# CHECK-NOT: COPY $xzr
|
|
name: test6
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
liveins: $x0, $x1, $x2
|
|
|
|
$x2 = COPY $x0
|
|
$x1 = COPY $x2
|
|
CBNZX $x1, %bb.2
|
|
|
|
bb.1:
|
|
$x0 = COPY $xzr
|
|
B %bb.3
|
|
|
|
bb.2:
|
|
liveins: $x1
|
|
|
|
$x0 = LDRXui $x1, 0
|
|
|
|
bb.3:
|
|
liveins: $x0
|
|
|
|
RET_ReallyLR implicit $x0
|
|
|
|
...
|
|
# Similar to test1, but with two levels of COPYs and a clobber preventing COPY of XZR removal.
|
|
# CHECK-LABEL: name: test7
|
|
# CHECK: COPY $xzr
|
|
name: test7
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
liveins: $x0, $x1, $x2
|
|
|
|
$x2 = COPY $x0
|
|
$x0 = LDRXui $x1, 0
|
|
$x1 = COPY $x2
|
|
CBNZX $x1, %bb.2
|
|
|
|
bb.1:
|
|
$x0 = COPY $xzr
|
|
B %bb.3
|
|
|
|
bb.2:
|
|
liveins: $x1
|
|
|
|
$x0 = LDRXui $x1, 0
|
|
|
|
bb.3:
|
|
liveins: $x0
|
|
|
|
RET_ReallyLR implicit $x0
|
|
|
|
...
|
|
# Check that the TargetRegs vector clobber update loop in
|
|
# AArch64RedundantCopyElimination::optimizeCopy works correctly.
|
|
# CHECK-LABEL: name: test8
|
|
# CHECK: x0 = COPY $xzr
|
|
# CHECK: x1 = COPY $xzr
|
|
name: test8
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
liveins: $x0, $x1
|
|
|
|
$x1 = COPY $x0
|
|
CBNZX $x1, %bb.2
|
|
|
|
bb.1:
|
|
liveins: $x0, $x2
|
|
|
|
$x0, $x1 = LDPXi $x2, 0
|
|
$x0 = COPY $xzr
|
|
$x1 = COPY $xzr
|
|
B %bb.3
|
|
|
|
bb.2:
|
|
liveins: $x1
|
|
|
|
$x0 = LDRXui $x1, 0
|
|
|
|
bb.3:
|
|
liveins: $x0
|
|
|
|
RET_ReallyLR implicit $x0
|
|
|
|
...
|
|
# Check that copy isn't removed from a block with multiple predecessors.
|
|
# CHECK-LABEL: name: test9
|
|
# CHECK: x0 = COPY $xzr
|
|
# CHECK-NEXT: B %bb.3
|
|
name: test9
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
liveins: $x0, $x1
|
|
|
|
CBNZX $x0, %bb.2
|
|
|
|
bb.1:
|
|
liveins: $x0, $x2
|
|
|
|
$x0 = COPY $xzr
|
|
B %bb.3
|
|
|
|
bb.2:
|
|
liveins: $x1
|
|
|
|
$x0 = LDRXui $x1, 0
|
|
|
|
CBNZX $x1, %bb.1
|
|
|
|
bb.3:
|
|
liveins: $x0
|
|
|
|
RET_ReallyLR implicit $x0
|
|
|
|
...
|
|
# Eliminate redundant MOVi32imm 7 in bb.1
|
|
# Note: 32-bit compare/32-bit move imm
|
|
# Kill marker should be removed from compare.
|
|
# CHECK-LABEL: name: test10
|
|
# CHECK: SUBSWri $w0, 7, 0, implicit-def $nzcv
|
|
# CHECK: bb.1:
|
|
# CHECK-NOT: MOVi32imm
|
|
name: test10
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $w0, $x1
|
|
|
|
dead $wzr = SUBSWri killed $w0, 7, 0, implicit-def $nzcv
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$w0 = MOVi32imm 7
|
|
STRWui killed $w0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# Eliminate redundant MOVi32imm 7 in bb.1
|
|
# Note: 64-bit compare/32-bit move imm w/implicit def
|
|
# Kill marker should be removed from compare.
|
|
# CHECK-LABEL: name: test11
|
|
# CHECK: SUBSXri $x0, 7, 0, implicit-def $nzcv
|
|
# CHECK: bb.1:
|
|
# CHECK-NOT: MOVi32imm
|
|
name: test11
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $x0, $x1
|
|
|
|
dead $xzr = SUBSXri killed $x0, 7, 0, implicit-def $nzcv
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$w0 = MOVi32imm 7, implicit-def $x0
|
|
STRXui killed $x0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# Eliminate redundant MOVi32imm 7 in bb.1
|
|
# Note: 64-bit compare/32-bit move imm
|
|
# Kill marker should be removed from compare.
|
|
# CHECK-LABEL: name: test12
|
|
# CHECK: SUBSXri $x0, 7, 0, implicit-def $nzcv
|
|
# CHECK: bb.1:
|
|
# CHECK-NOT: MOVi32imm
|
|
name: test12
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $x0, $x1
|
|
|
|
dead $xzr = SUBSXri killed $x0, 7, 0, implicit-def $nzcv
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$w0 = MOVi32imm 7
|
|
STRWui killed $w0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# Don't eliminate MOVi32imm 7 in bb.1 as we don't necessarily know the upper 32-bits.
|
|
# Note: 32-bit compare/32-bit move imm w/implicit def
|
|
# Kill marker should remain on compare.
|
|
# CHECK-LABEL: name: test13
|
|
# CHECK: SUBSWri killed $w0, 7, 0, implicit-def $nzcv
|
|
# CHECK: bb.1:
|
|
# CHECK: MOVi32imm
|
|
name: test13
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $w0, $x1
|
|
|
|
dead $wzr = SUBSWri killed $w0, 7, 0, implicit-def $nzcv
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$w0 = MOVi32imm 7, implicit-def $x0
|
|
STRXui killed $x0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# We can't eliminate the MOVi32imm because of the clobbering LDRWui.
|
|
# CHECK-LABEL: name: test14
|
|
# CHECK: bb.1:
|
|
# CHECK: MOVi32imm
|
|
name: test14
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $w0, $x1, $x2
|
|
|
|
dead $wzr = SUBSWri killed $w0, 7, 0, implicit-def $nzcv
|
|
$w0 = LDRWui $x1, 0
|
|
STRWui killed $w0, killed $x2, 0
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$w0 = MOVi32imm 7
|
|
STRWui killed $w0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# We can't eliminate the MOVi32imm because of the clobbering LDRWui.
|
|
# CHECK-LABEL: name: test15
|
|
# CHECK: bb.1:
|
|
# CHECK: MOVi32imm
|
|
name: test15
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $w0, $x1, $x2
|
|
|
|
dead $wzr = SUBSWri killed $w0, 7, 0, implicit-def $nzcv
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1, $x2
|
|
|
|
$w0 = LDRWui $x1, 0
|
|
STRWui killed $w0, killed $x2, 0
|
|
$w0 = MOVi32imm 7
|
|
STRWui killed $w0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# Check that bb.0 COPY is seen through to allow the bb.1 MOVi32imm to be removed.
|
|
# CHECK-LABEL: name: test16
|
|
# CHECK: bb.1:
|
|
# CHECK-NOT: MOVi32imm
|
|
name: test16
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $w0, $x1
|
|
|
|
dead $wzr = SUBSWri $w0, 7, 0, implicit-def $nzcv
|
|
$w2 = COPY $w0
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$w2 = MOVi32imm 7
|
|
STRWui killed $w2, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# Check that bb.1 MOVi32imm is not removed due to self clobbering compare.
|
|
# CHECK-LABEL: name: test17
|
|
# CHECK: bb.1:
|
|
# CHECK: MOVi32imm
|
|
name: test17
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $w0, $x1
|
|
|
|
dead $w0 = SUBSWri killed $w0, 7, 0, implicit-def $nzcv
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$w0 = MOVi32imm 7
|
|
STRWui killed $w0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# Make sure the MOVi64imm is not removed. In one version of this patch the
|
|
# MOVi64imm immediate was truncated to 32 bits and incorrectly matched because
|
|
# the low 32 bits of 4252017623040 are all zero.
|
|
# CHECK-LABEL: name: test18
|
|
# CHECK: bb.1:
|
|
# CHECK: MOVi64imm
|
|
name: test18
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $x0, $x1
|
|
|
|
CBNZX killed $x0, %bb.2
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$x0 = MOVi64imm 4252017623040
|
|
STRXui killed $x0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# Eliminate redundant MOVi32imm -1 in bb.1
|
|
# Note: 32-bit compare/32-bit move imm
|
|
# Kill marker should be removed from compare.
|
|
# CHECK-LABEL: name: test19
|
|
# CHECK: ADDSWri $w0, 1, 0, implicit-def $nzcv
|
|
# CHECK: bb.1:
|
|
# CHECK-NOT: MOVi32imm
|
|
name: test19
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $w0, $x1
|
|
|
|
dead $wzr = ADDSWri killed $w0, 1, 0, implicit-def $nzcv
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$w0 = MOVi32imm -1
|
|
STRWui killed $w0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# Eliminate redundant MOVi64imm -1 in bb.1
|
|
# Note: 64-bit compare/64-bit move imm
|
|
# Kill marker should be removed from compare.
|
|
# CHECK-LABEL: name: test20
|
|
# CHECK: ADDSXri $x0, 1, 0, implicit-def $nzcv
|
|
# CHECK: bb.1:
|
|
# CHECK-NOT: MOVi64imm
|
|
name: test20
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0:
|
|
liveins: $x0, $x1
|
|
|
|
dead $xzr = ADDSXri killed $x0, 1, 0, implicit-def $nzcv
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$x0 = MOVi64imm -1
|
|
STRXui killed $x0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# Eliminate redundant MOVi32imm -1 in bb.1
|
|
# Note: 64-bit compare/32-bit move imm
|
|
# Kill marker should be removed from compare.
|
|
# CHECK-LABEL: name: test21
|
|
# CHECK: ADDSXri $x0, 1, 0, implicit-def $nzcv
|
|
# CHECK: bb.1:
|
|
# CHECK-NOT: MOVi32imm
|
|
name: test21
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $x0, $x1
|
|
|
|
dead $xzr = ADDSXri killed $x0, 1, 0, implicit-def $nzcv
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$w0 = MOVi32imm -1
|
|
STRWui killed $w0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# Don't eliminate MOVi64imm -1 in bb.1 as we don't necessarily know the upper 32-bits.
|
|
# Note: 32-bit compare/64-bit move imm
|
|
# CHECK-LABEL: name: test22
|
|
# CHECK: bb.1:
|
|
# CHECK: MOVi64imm
|
|
name: test22
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $w0, $x1
|
|
|
|
dead $wzr = ADDSWri killed $w0, 1, 0, implicit-def $nzcv
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$x0 = MOVi64imm -1
|
|
STRXui killed $x0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|
|
...
|
|
# Eliminate redundant MOVi32imm 4096 in bb.1 when the compare has a shifted immediate.
|
|
# CHECK-LABEL: name: test23
|
|
# CHECK: bb.1:
|
|
# CHECK-NOT: MOVi32imm
|
|
name: test23
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $w0, $x1
|
|
|
|
dead $wzr = SUBSWri killed $w0, 1, 12, implicit-def $nzcv
|
|
Bcc 1, %bb.2, implicit killed $nzcv
|
|
B %bb.1
|
|
|
|
bb.1:
|
|
liveins: $x1
|
|
|
|
$w0 = MOVi32imm 4096
|
|
STRWui killed $w0, killed $x1, 0
|
|
|
|
bb.2:
|
|
RET_ReallyLR
|