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|
# RUN: llc -O2 -o - %s -mtriple=aarch64-windows -start-before=shrink-wrap \
# RUN: -stop-after=prologepilog | FileCheck %s --check-prefix=WIN64
# RUN: llc -O2 -o - %s -mtriple=aarch64-linux -start-before=shrink-wrap \
# RUN: -stop-after=prologepilog | FileCheck %s --check-prefix=LINUX
# This tests checks that shrink wrapping bails out on Windows AMR64 due to the
# use of Windows CFI. We don't currently support fragments for WIndows EH on
# ARM64.
# The same test gets shrink wrapped on Linux ARM64.
# WIN64-LABEL: bb.0.entry:
# WIN64: early-clobber $sp = frame-setup STPXpre killed $fp, killed $lr, $sp, -4
# WIN64-LABEL: bb.1:
# WIN64-LABEL: bb.2.if.then:
# LINUX-LABEL: bb.0.entry:
# LINUX-LABEL: bb.1:
# LINUX-LABEL: bb.2.if.then:
# LINUX: early-clobber $sp = frame-setup STRXpre killed $fp, $sp, -32
--- |
; ModuleID = 'shrink.cpp'
target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-windows-msvc19.11.0"
define dso_local i32 @"?func@@YAHHH@Z"(i32 %a, i32 %b) local_unnamed_addr #0 {
entry:
%A = alloca [1000 x i32], align 4
%cmp = icmp sgt i32 %a, 1
br i1 %cmp, label %if.then, label %return
if.then: ; preds = %entry
%0 = bitcast [1000 x i32]* %A to i8*
call void @llvm.lifetime.start.p0i8(i64 4000, i8* nonnull %0) #3
%arraydecay2 = bitcast [1000 x i32]* %A to i32*
call void @"?init@@YAXPEAH@Z"(i32* nonnull %arraydecay2)
%arrayidx = getelementptr inbounds [1000 x i32], [1000 x i32]* %A, i64 0, i64 100
%1 = load i32, i32* %arrayidx, align 4, !tbaa !2
%add = add i32 %b, 1
%add1 = add i32 %add, %1
call void @llvm.lifetime.end.p0i8(i64 4000, i8* nonnull %0) #3
br label %return
return: ; preds = %entry, %if.then
%retval.0 = phi i32 [ %add1, %if.then ], [ 0, %entry ]
ret i32 %retval.0
}
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
declare dso_local void @"?init@@YAXPEAH@Z"(i32*) local_unnamed_addr #2
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
; Function Attrs: nounwind
declare void @llvm.stackprotector(i8*, i8**) #3
attributes #0 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+neon" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { argmemonly nounwind }
attributes #2 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+neon" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #3 = { nounwind }
!llvm.module.flags = !{!0}
!llvm.ident = !{!1}
!0 = !{i32 1, !"wchar_size", i32 2}
!1 = !{!"clang version 8.0.0"}
!2 = !{!3, !3, i64 0}
!3 = !{!"int", !4, i64 0}
!4 = !{!"omnipotent char", !5, i64 0}
!5 = !{!"Simple C++ TBAA"}
...
---
name: '?func@@YAHHH@Z'
alignment: 4
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
registers:
liveins:
- { reg: '$w0', virtual-reg: '' }
- { reg: '$w1', virtual-reg: '' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 4
adjustsStack: true
hasCalls: true
stackProtector: ''
maxCallFrameSize: 0
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 4000
savePoint: ''
restorePoint: ''
fixedStack:
stack:
- { id: 0, name: A, type: default, offset: 0, size: 4000, alignment: 4,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
local-offset: -4000, debug-info-variable: '', debug-info-expression: '',
debug-info-location: '' }
constants:
body: |
bb.0.entry:
successors: %bb.2(0x40000000), %bb.1(0x40000000)
liveins: $w0, $w1
dead $wzr = SUBSWri killed renamable $w0, 2, 0, implicit-def $nzcv
Bcc 10, %bb.2, implicit killed $nzcv
bb.1:
successors: %bb.3(0x80000000)
renamable $w0 = COPY $wzr
B %bb.3
bb.2.if.then:
successors: %bb.3(0x80000000)
liveins: $w1
renamable $w19 = COPY $w1
ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
$x0 = ADDXri %stack.0.A, 0, 0
BL @"?init@@YAXPEAH@Z", csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $x0, implicit-def $sp
ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
renamable $w8 = LDRWui %stack.0.A, 100 :: (dereferenceable load 4 from %ir.arrayidx, !tbaa !2)
renamable $w8 = ADDWrr killed renamable $w19, killed renamable $w8
renamable $w0 = ADDWri killed renamable $w8, 1, 0
bb.3.return:
liveins: $w0
RET_ReallyLR implicit $w0
...
|
