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b45305d59c
Add ARM64 unwind codes to MCLayer, as well SEH directives that will be emitted by the frame lowering patch to follow. We only emit unwind codes into object object files for now. Differential Revision: https://reviews.llvm.org/D50166 llvm-svn: 345450
147 lines
5.4 KiB
YAML
147 lines
5.4 KiB
YAML
# RUN: llc -O2 -o - %s -mtriple=aarch64-windows -start-before=shrink-wrap \
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# RUN: -stop-after=prologepilog | FileCheck %s --check-prefix=WIN64
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# RUN: llc -O2 -o - %s -mtriple=aarch64-linux -start-before=shrink-wrap \
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# RUN: -stop-after=prologepilog | FileCheck %s --check-prefix=LINUX
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# This tests checks that shrink wrapping bails out on Windows AMR64 due to the
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# use of Windows CFI. We don't currently support fragments for WIndows EH on
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# ARM64.
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# The same test gets shrink wrapped on Linux ARM64.
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# WIN64-LABEL: bb.0.entry:
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# WIN64: early-clobber $sp = frame-setup STRXpre killed $x28, $sp, -32
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# WIN64-LABEL: bb.1:
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# WIN64-LABEL: bb.2.if.then:
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# LINUX-LABEL: bb.0.entry:
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# LINUX-LABEL: bb.1:
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# LINUX-LABEL: bb.2.if.then:
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# LINUX: early-clobber $sp = frame-setup STRXpre killed $x28, $sp, -32
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--- |
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; ModuleID = 'shrink.cpp'
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target datalayout = "e-m:w-p:64:64-i32:32-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64-unknown-windows-msvc19.11.0"
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define dso_local i32 @"?func@@YAHHH@Z"(i32 %a, i32 %b) local_unnamed_addr #0 {
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entry:
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%A = alloca [1000 x i32], align 4
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%cmp = icmp sgt i32 %a, 1
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br i1 %cmp, label %if.then, label %return
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if.then: ; preds = %entry
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%0 = bitcast [1000 x i32]* %A to i8*
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call void @llvm.lifetime.start.p0i8(i64 4000, i8* nonnull %0) #3
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%arraydecay2 = bitcast [1000 x i32]* %A to i32*
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call void @"?init@@YAXPEAH@Z"(i32* nonnull %arraydecay2)
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%arrayidx = getelementptr inbounds [1000 x i32], [1000 x i32]* %A, i64 0, i64 100
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%1 = load i32, i32* %arrayidx, align 4, !tbaa !2
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%add = add i32 %b, 1
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%add1 = add i32 %add, %1
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call void @llvm.lifetime.end.p0i8(i64 4000, i8* nonnull %0) #3
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br label %return
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return: ; preds = %entry, %if.then
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%retval.0 = phi i32 [ %add1, %if.then ], [ 0, %entry ]
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ret i32 %retval.0
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}
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
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declare dso_local void @"?init@@YAXPEAH@Z"(i32*) local_unnamed_addr #2
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
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; Function Attrs: nounwind
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declare void @llvm.stackprotector(i8*, i8**) #3
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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" }
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attributes #1 = { argmemonly nounwind }
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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" }
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attributes #3 = { nounwind }
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!llvm.module.flags = !{!0}
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!llvm.ident = !{!1}
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!0 = !{i32 1, !"wchar_size", i32 2}
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!1 = !{!"clang version 8.0.0"}
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!2 = !{!3, !3, i64 0}
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!3 = !{!"int", !4, i64 0}
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!4 = !{!"omnipotent char", !5, i64 0}
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!5 = !{!"Simple C++ TBAA"}
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...
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---
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name: '?func@@YAHHH@Z'
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alignment: 2
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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failedISel: false
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tracksRegLiveness: true
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registers:
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liveins:
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- { reg: '$w0', virtual-reg: '' }
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- { reg: '$w1', virtual-reg: '' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 0
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offsetAdjustment: 0
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maxAlignment: 4
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adjustsStack: true
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hasCalls: true
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stackProtector: ''
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maxCallFrameSize: 0
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cvBytesOfCalleeSavedRegisters: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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localFrameSize: 4000
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savePoint: ''
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restorePoint: ''
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fixedStack:
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stack:
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- { id: 0, name: A, type: default, offset: 0, size: 4000, alignment: 4,
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stack-id: 0, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -4000, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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constants:
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body: |
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bb.0.entry:
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successors: %bb.2(0x40000000), %bb.1(0x40000000)
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liveins: $w0, $w1
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dead $wzr = SUBSWri killed renamable $w0, 2, 0, implicit-def $nzcv
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Bcc 10, %bb.2, implicit killed $nzcv
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bb.1:
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successors: %bb.3(0x80000000)
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renamable $w0 = COPY $wzr
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B %bb.3
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bb.2.if.then:
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successors: %bb.3(0x80000000)
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liveins: $w1
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renamable $w19 = COPY $w1
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ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
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$x0 = ADDXri %stack.0.A, 0, 0
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BL @"?init@@YAXPEAH@Z", csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $x0, implicit-def $sp
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ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
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renamable $w8 = LDRWui %stack.0.A, 100 :: (dereferenceable load 4 from %ir.arrayidx, !tbaa !2)
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renamable $w8 = ADDWrr killed renamable $w19, killed renamable $w8
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renamable $w0 = ADDWri killed renamable $w8, 1, 0
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bb.3.return:
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liveins: $w0
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RET_ReallyLR implicit $w0
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...
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