| # 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 STRXpre killed $x19, $sp, -32 |
| # 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" "frame-pointer"="none" "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" "frame-pointer"="none" "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 (s32) 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 |
| |
| ... |