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clang-p2996/llvm/test/CodeGen/AArch64/shrinkwrap-split-restore-point.mir
sgokhale c4a60c9d34 [CodeGen][ShrinkWrap] Enable PostShrinkWrap by default 
This is an attempt to reland D42600 and enabling this optimisation by default.

This also resolves the issue pointed out in the context of PGO build.

Differential Revision: https://reviews.llvm.org/D42600
2023-05-25 13:56:29 +05:30

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
# RUN: llc -mtriple=aarch64 -run-pass=shrink-wrap -o - %s | FileCheck %s
--- |
define void @shrink_test1(i32 %a) {
entry:
%cmp5 = icmp sgt i32 %a, 0
br i1 %cmp5, label %BB0, label %exit
BB0: ; preds = %entry
%call = call i32 @fun()
%c = icmp eq i32 %call, 0
br i1 %c, label %BB1, label %exit
BB1: ; preds = %BB0
%call2 = call i32 @fun()
br label %exit
exit: ; preds = %BB1, %BB0, %entry
ret void
}
define void @shrink_test2(i32 %a, ptr %P1, ptr %P2) {
BB00:
%cmp5 = icmp sgt i32 %a, 0
br i1 %cmp5, label %BB01, label %exit
BB01: ; preds = %BB00
store i32 %a, ptr %P1, align 4
%c1 = icmp sgt i32 %a, 1
br i1 %c1, label %BB02, label %BB03
BB02: ; preds = %BB01
store i32 %a, ptr %P2, align 4
br label %BB03
BB03: ; preds = %BB02, %BB01
%call03 = call i32 @fun()
%c03 = icmp eq i32 %call03, 0
br i1 %c03, label %BB04, label %BB05
BB04: ; preds = %BB03
%call04 = call i32 @fun()
br label %BB05
BB05: ; preds = %BB04, %BB03
%call05 = call i32 @fun()
%c05 = icmp eq i32 %call05, 0
br i1 %c05, label %BB06, label %BB07
BB06: ; preds = %BB05
%call06 = call i32 @fun()
br label %exit
BB07: ; preds = %BB05
%call07 = call i32 @fun2()
br label %exit
exit: ; preds = %BB07, %BB06, %BB00
ret void
}
define void @noshrink_test1(i32 %a, i32 %v, i32 %v2) {
entry:
%cmp5 = icmp sgt i32 %a, 0
br i1 %cmp5, label %BB0, label %exit
BB0: ; preds = %entry
%c = icmp eq i32 %a, 10
%c1 = icmp eq i32 %v, 10
%or.cond = select i1 %c, i1 %c1, i1 false
br i1 %or.cond, label %BB3, label %BB2
BB2: ; preds = %BB0
%c2 = icmp eq i32 %v2, 10
br i1 %c2, label %BB4, label %exit
BB3: ; preds = %BB0
%call3 = call i32 @fun()
br label %exit
BB4: ; preds = %BB2
%call4 = call i32 @fun2()
br label %exit
exit: ; preds = %BB4, %BB3, %BB2, %entry
ret void
}
define void @noshrink_test2(i32 %a) {
BB00:
%cmp5 = icmp sgt i32 %a, 0
br i1 %cmp5, label %BB01, label %InfLoop.preheader
InfLoop.preheader: ; preds = %BB00
br label %InfLoop
BB01: ; preds = %BB00
%call = call i32 @fun()
%c = icmp eq i32 %call, 0
br i1 %c, label %BB02, label %exit
BB02: ; preds = %BB01
%call2 = call i32 @fun()
br label %exit
InfLoop: ; preds = %InfLoop.preheader, %InfLoop
%call3 = call i32 @fun()
br label %InfLoop
exit: ; preds = %BB02, %BB01
ret void
}
define void @noshrink_test3(i32 %a) {
BB00:
%cmp5 = icmp sgt i32 %a, 0
%call02 = call i32 @fun()
br i1 %cmp5, label %BB02, label %BB01
BB01: ; preds = %BB00
%0 = icmp eq i32 %call02, 0
br i1 %0, label %BB01.1, label %exit
BB01.1: ; preds = %BB01
call void @abort() #0
unreachable
BB02: ; preds = %BB00
%1 = icmp eq i32 %call02, 0
br i1 %1, label %BB03, label %BB04
BB03: ; preds = %BB02
%call03 = call i32 @fun()
%c03 = icmp eq i32 %call03, 0
br i1 %c03, label %BB04, label %exit
BB04: ; preds = %BB03, %BB02
%call04 = call i32 @fun()
br label %exit
exit: ; preds = %BB04, %BB03, %BB01
ret void
}
define void @noshrink_bb_as_inlineasmbr_target(i1 %cond) {
entry:
br i1 %cond, label %0, label %exit
0: ; preds = %entry
callbr void asm sideeffect "", "!i,~{flags}"()
to label %1 [label %exit]
1: ; preds = %0
call void @dosomething()
br label %exit
exit: ; preds = %1, %0, %entry
ret void
}
declare i32 @fun()
declare i32 @fun2()
declare void @abort()
declare void @dosomething()
...
---
name: shrink_test1
alignment: 4
tracksRegLiveness: true
tracksDebugUserValues: true
liveins:
- { reg: '$w0' }
frameInfo:
maxAlignment: 1
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: shrink_test1
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.1(0x50000000), %bb.3(0x30000000)
; CHECK-NEXT: liveins: $w0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: dead $wzr = SUBSWri killed renamable $w0, 1, 0, implicit-def $nzcv
; CHECK-NEXT: Bcc 11, %bb.3, implicit killed $nzcv
; CHECK-NEXT: B %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.BB0:
; CHECK-NEXT: successors: %bb.2(0x30000000), %bb.4(0x50000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: CBNZW killed renamable $w0, %bb.4
; CHECK-NEXT: B %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.BB1:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: B %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3.exit:
; CHECK-NEXT: RET_ReallyLR
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: B %bb.3
bb.0.entry:
successors: %bb.1(0x50000000), %bb.3(0x30000000)
liveins: $w0
dead $wzr = SUBSWri killed renamable $w0, 1, 0, implicit-def $nzcv
Bcc 11, %bb.3, implicit killed $nzcv
B %bb.1
bb.1.BB0:
successors: %bb.2(0x30000000), %bb.3(0x50000000)
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
CBNZW killed renamable $w0, %bb.3
B %bb.2
bb.2.BB1:
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
bb.3.exit:
RET_ReallyLR
...
---
name: shrink_test2
alignment: 4
tracksRegLiveness: true
tracksDebugUserValues: true
liveins:
- { reg: '$w0' }
- { reg: '$x1' }
- { reg: '$x2' }
frameInfo:
maxAlignment: 1
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: shrink_test2
; CHECK: bb.0.BB00:
; CHECK-NEXT: successors: %bb.1(0x50000000), %bb.8(0x30000000)
; CHECK-NEXT: liveins: $w0, $x1, $x2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: dead $wzr = SUBSWri renamable $w0, 1, 0, implicit-def $nzcv
; CHECK-NEXT: Bcc 11, %bb.8, implicit killed $nzcv
; CHECK-NEXT: B %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.BB01:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: liveins: $w0, $x1, $x2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: dead $wzr = SUBSWri renamable $w0, 2, 0, implicit-def $nzcv
; CHECK-NEXT: STRWui renamable $w0, killed renamable $x1, 0 :: (store (s32) into %ir.P1)
; CHECK-NEXT: Bcc 11, %bb.3, implicit killed $nzcv
; CHECK-NEXT: B %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.BB02:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: liveins: $w0, $x2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: STRWui killed renamable $w0, killed renamable $x2, 0 :: (store (s32) into %ir.P2)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3.BB03:
; CHECK-NEXT: successors: %bb.4(0x30000000), %bb.5(0x50000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: CBNZW killed renamable $w0, %bb.5
; CHECK-NEXT: B %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4.BB04:
; CHECK-NEXT: successors: %bb.5(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5.BB05:
; CHECK-NEXT: successors: %bb.6(0x30000000), %bb.7(0x50000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: CBNZW killed renamable $w0, %bb.7
; CHECK-NEXT: B %bb.6
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.6.BB06:
; CHECK-NEXT: successors: %bb.9(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: B %bb.9
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.7.BB07:
; CHECK-NEXT: successors: %bb.9(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: B %bb.9
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.8.exit:
; CHECK-NEXT: RET_ReallyLR
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.9:
; CHECK-NEXT: successors: %bb.8(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: B %bb.8
bb.0.BB00:
successors: %bb.1(0x50000000), %bb.8(0x30000000)
liveins: $w0, $x1, $x2
dead $wzr = SUBSWri renamable $w0, 1, 0, implicit-def $nzcv
Bcc 11, %bb.8, implicit killed $nzcv
B %bb.1
bb.1.BB01:
successors: %bb.2, %bb.3
liveins: $w0, $x1, $x2
dead $wzr = SUBSWri renamable $w0, 2, 0, implicit-def $nzcv
STRWui renamable $w0, killed renamable $x1, 0 :: (store (s32) into %ir.P1)
Bcc 11, %bb.3, implicit killed $nzcv
B %bb.2
bb.2.BB02:
liveins: $w0, $x2
STRWui killed renamable $w0, killed renamable $x2, 0 :: (store (s32) into %ir.P2)
bb.3.BB03:
successors: %bb.4(0x30000000), %bb.5(0x50000000)
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
CBNZW killed renamable $w0, %bb.5
B %bb.4
bb.4.BB04:
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
bb.5.BB05:
successors: %bb.6(0x30000000), %bb.7(0x50000000)
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
CBNZW killed renamable $w0, %bb.7
B %bb.6
bb.6.BB06:
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
B %bb.8
bb.7.BB07:
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
bb.8.exit:
RET_ReallyLR
...
---
name: noshrink_test1
alignment: 4
tracksRegLiveness: true
tracksDebugUserValues: true
liveins:
- { reg: '$w0' }
- { reg: '$w1' }
- { reg: '$w2' }
frameInfo:
maxAlignment: 1
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: noshrink_test1
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.1(0x50000000), %bb.6(0x30000000)
; CHECK-NEXT: liveins: $w0, $w1, $w2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: dead $wzr = SUBSWri renamable $w0, 1, 0, implicit-def $nzcv
; CHECK-NEXT: Bcc 11, %bb.6, implicit killed $nzcv
; CHECK-NEXT: B %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.BB0:
; CHECK-NEXT: successors: %bb.2(0x60000000), %bb.3(0x20000000)
; CHECK-NEXT: liveins: $w0, $w1, $w2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: dead $wzr = SUBSWri killed renamable $w0, 10, 0, implicit-def $nzcv
; CHECK-NEXT: Bcc 1, %bb.3, implicit killed $nzcv
; CHECK-NEXT: B %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.BB0:
; CHECK-NEXT: successors: %bb.4(0x55555555), %bb.3(0x2aaaaaab)
; CHECK-NEXT: liveins: $w1, $w2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: dead $wzr = SUBSWri killed renamable $w1, 10, 0, implicit-def $nzcv
; CHECK-NEXT: Bcc 0, %bb.4, implicit killed $nzcv
; CHECK-NEXT: B %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3.BB2:
; CHECK-NEXT: successors: %bb.5(0x40000000), %bb.6(0x40000000)
; CHECK-NEXT: liveins: $w2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: dead $wzr = SUBSWri killed renamable $w2, 10, 0, implicit-def $nzcv
; CHECK-NEXT: Bcc 0, %bb.5, implicit killed $nzcv
; CHECK-NEXT: B %bb.6
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4.BB3:
; CHECK-NEXT: successors: %bb.6(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: B %bb.6
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5.BB4:
; CHECK-NEXT: successors: %bb.6(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.6.exit:
; CHECK-NEXT: RET_ReallyLR
bb.0.entry:
successors: %bb.1(0x50000000), %bb.6(0x30000000)
liveins: $w0, $w1, $w2
dead $wzr = SUBSWri renamable $w0, 1, 0, implicit-def $nzcv
Bcc 11, %bb.6, implicit killed $nzcv
B %bb.1
bb.1.BB0:
successors: %bb.2(0x60000000), %bb.3(0x20000000)
liveins: $w0, $w1, $w2
dead $wzr = SUBSWri killed renamable $w0, 10, 0, implicit-def $nzcv
Bcc 1, %bb.3, implicit killed $nzcv
B %bb.2
bb.2.BB0:
successors: %bb.4(0x55555555), %bb.3(0x2aaaaaab)
liveins: $w1, $w2
dead $wzr = SUBSWri killed renamable $w1, 10, 0, implicit-def $nzcv
Bcc 0, %bb.4, implicit killed $nzcv
B %bb.3
bb.3.BB2:
liveins: $w2
dead $wzr = SUBSWri killed renamable $w2, 10, 0, implicit-def $nzcv
Bcc 0, %bb.5, implicit killed $nzcv
B %bb.6
bb.4.BB3:
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
B %bb.6
bb.5.BB4:
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun2, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
bb.6.exit:
RET_ReallyLR
...
---
name: noshrink_test2
alignment: 4
tracksRegLiveness: true
tracksDebugUserValues: true
liveins:
- { reg: '$w0' }
frameInfo:
maxAlignment: 1
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: noshrink_test2
; CHECK: bb.0.BB00:
; CHECK-NEXT: successors: %bb.2(0x50000000), %bb.1(0x30000000)
; CHECK-NEXT: liveins: $w0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: dead $wzr = SUBSWri killed renamable $w0, 0, 0, implicit-def $nzcv
; CHECK-NEXT: Bcc 12, %bb.2, implicit killed $nzcv
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: B %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.BB01:
; CHECK-NEXT: successors: %bb.3(0x30000000), %bb.5(0x50000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: CBNZW killed renamable $w0, %bb.5
; CHECK-NEXT: B %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3.BB02:
; CHECK-NEXT: successors: %bb.5(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: B %bb.5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4.InfLoop:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: B %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5.exit:
; CHECK-NEXT: RET_ReallyLR
bb.0.BB00:
successors: %bb.2(0x50000000), %bb.1(0x30000000)
liveins: $w0
dead $wzr = SUBSWri killed renamable $w0, 0, 0, implicit-def $nzcv
Bcc 12, %bb.2, implicit killed $nzcv
bb.1:
B %bb.4
bb.2.BB01:
successors: %bb.3(0x30000000), %bb.5(0x50000000)
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
CBNZW killed renamable $w0, %bb.5
B %bb.3
bb.3.BB02:
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
B %bb.5
bb.4.InfLoop:
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
B %bb.4
bb.5.exit:
RET_ReallyLR
...
---
name: noshrink_test3
alignment: 4
tracksRegLiveness: true
tracksDebugUserValues: true
liveins:
- { reg: '$w0' }
frameInfo:
maxAlignment: 1
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: noshrink_test3
; CHECK: bb.0.BB00:
; CHECK-NEXT: successors: %bb.3(0x50000000), %bb.1(0x30000000)
; CHECK-NEXT: liveins: $w0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: renamable $w19 = COPY $w0
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: dead $wzr = SUBSWri killed renamable $w19, 0, 0, implicit-def $nzcv
; CHECK-NEXT: Bcc 12, %bb.3, implicit killed $nzcv
; CHECK-NEXT: B %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.BB01:
; CHECK-NEXT: successors: %bb.2(0x00000800), %bb.6(0x7ffff800)
; CHECK-NEXT: liveins: $w0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: CBNZW killed renamable $w0, %bb.6
; CHECK-NEXT: B %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.BB01.1:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @abort, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3.BB02:
; CHECK-NEXT: successors: %bb.4(0x30000000), %bb.5(0x50000000)
; CHECK-NEXT: liveins: $w0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: CBNZW killed renamable $w0, %bb.5
; CHECK-NEXT: B %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4.BB03:
; CHECK-NEXT: successors: %bb.5(0x30000000), %bb.6(0x50000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: CBNZW killed renamable $w0, %bb.6
; CHECK-NEXT: B %bb.5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5.BB04:
; CHECK-NEXT: successors: %bb.6(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.6.exit:
; CHECK-NEXT: RET_ReallyLR
bb.0.BB00:
successors: %bb.3(0x50000000), %bb.1(0x30000000)
liveins: $w0
renamable $w19 = COPY $w0
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
dead $wzr = SUBSWri killed renamable $w19, 0, 0, implicit-def $nzcv
Bcc 12, %bb.3, implicit killed $nzcv
B %bb.1
bb.1.BB01:
successors: %bb.2(0x00000800), %bb.6(0x7ffff800)
liveins: $w0
CBNZW killed renamable $w0, %bb.6
B %bb.2
bb.2.BB01.1:
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @abort, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
bb.3.BB02:
successors: %bb.4(0x30000000), %bb.5(0x50000000)
liveins: $w0
CBNZW killed renamable $w0, %bb.5
B %bb.4
bb.4.BB03:
successors: %bb.5(0x30000000), %bb.6(0x50000000)
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
CBNZW killed renamable $w0, %bb.6
B %bb.5
bb.5.BB04:
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @fun, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $w0
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
bb.6.exit:
RET_ReallyLR
...
---
name: noshrink_bb_as_inlineasmbr_target
registers: []
liveins:
- { reg: '$w0', virtual-reg: '' }
frameInfo:
savePoint: ''
restorePoint: ''
body: |
; CHECK-LABEL: name: noshrink_bb_as_inlineasmbr_target
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: liveins: $w0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: TBZW killed renamable $w0, 0, %bb.3
; CHECK-NEXT: B %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1 (%ir-block.0):
; CHECK-NEXT: successors: %bb.2(0x80000000), %bb.3(0x00000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: INLINEASM_BR &"", 1 /* sideeffect attdialect */, 13 /* imm */, %bb.3
; CHECK-NEXT: B %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2 (%ir-block.1):
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: BL @dosomething, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3.exit (machine-block-address-taken, inlineasm-br-indirect-target):
; CHECK-NEXT: RET_ReallyLR
bb.0.entry:
successors: %bb.1(0x40000000), %bb.3(0x40000000)
liveins: $w0
TBZW killed renamable $w0, 0, %bb.3
B %bb.1
bb.1 (%ir-block.0):
successors: %bb.2(0x80000000), %bb.3(0x00000000)
INLINEASM_BR &"", 1 /* sideeffect attdialect */, 13 /* imm */, %bb.3
B %bb.2
bb.2 (%ir-block.1):
successors: %bb.3(0x80000000)
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
BL @dosomething, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
bb.3.exit (machine-block-address-taken, inlineasm-br-indirect-target):
RET_ReallyLR
...
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