265 lines
11 KiB
LLVM
265 lines
11 KiB
LLVM
|
; RUN: llc < %s | FileCheck %s --check-prefix=ASM
|
||
|
|
; RUN: llc < %s -filetype=obj | llvm-readobj --codeview - | FileCheck %s --check-prefix=CODEVIEW
|
||
|
|
|
||
|
|
; This test checks that for 32-bit x86 we use VFRAME and
|
||
|
|
; S_DEFRANGE_FRAMEPOINTER_REL with the right offsets. The test has two function
|
||
|
|
; calls with different stack depths, which makes it impossible to correctly
|
||
|
|
; describe locals in memory as being ESP-relative.
|
||
|
|
|
||
|
|
; The following source can be used with a debugger to check that locals are
|
||
|
|
; displayed correctly:
|
||
|
|
; $ cat fpo.cpp
|
||
|
|
; #if 0
|
||
|
|
; void __attribute__((optnone)) __declspec(noinline) f(int &a, int &b) {
|
||
|
|
; __debugbreak();
|
||
|
|
; a += b;
|
||
|
|
; }
|
||
|
|
; void __attribute__((optnone)) __declspec(noinline) g(int &a, int &b, int &c) {
|
||
|
|
; __debugbreak();
|
||
|
|
; a += b;
|
||
|
|
; a += c;
|
||
|
|
; }
|
||
|
|
; #endif
|
||
|
|
; void f(int &a, int &b);
|
||
|
|
; void g(int &a, int &b, int &c);
|
||
|
|
; int main() {
|
||
|
|
; int a = 1;
|
||
|
|
; int b = 2;
|
||
|
|
; int c = 3;
|
||
|
|
; f(a, b);
|
||
|
|
; g(a, b, c);
|
||
|
|
; return a + b + c;
|
||
|
|
; }
|
||
|
|
; $ clang -S -g -gcodeview t.cpp -emit-llvm -o vframe-fpo.ll -Os
|
||
|
|
|
||
|
|
; ASM-LABEL: _main:
|
||
|
|
; ASM: # %bb.0: # %entry
|
||
|
|
; ASM-NEXT: pushl %ebx
|
||
|
|
; ASM-NEXT: .cv_fpo_pushreg %ebx
|
||
|
|
; ASM-NEXT: pushl %edi
|
||
|
|
; ASM-NEXT: .cv_fpo_pushreg %edi
|
||
|
|
; ASM-NEXT: pushl %esi
|
||
|
|
; ASM-NEXT: .cv_fpo_pushreg %esi
|
||
|
|
; ASM-NEXT: subl $12, %esp
|
||
|
|
; ASM-NEXT: .cv_fpo_stackalloc 12
|
||
|
|
; ASM-NEXT: .cv_fpo_endprologue
|
||
|
|
|
||
|
|
; Store locals.
|
||
|
|
; ASM: movl $1, {{.*}}
|
||
|
|
; ASM: movl $2, {{.*}}
|
||
|
|
; ASM: movl $3, {{.*}}
|
||
|
|
|
||
|
|
; ASM that store-to-push conversion fires.
|
||
|
|
; ASM: pushl
|
||
|
|
; ASM-NEXT: pushl
|
||
|
|
; ASM-NEXT: calll "?f@@YAXAAH0@Z"
|
||
|
|
; ASM-NEXT: addl $8, %esp
|
||
|
|
; ASM: pushl
|
||
|
|
; ASM-NEXT: pushl
|
||
|
|
; ASM-NEXT: pushl
|
||
|
|
; ASM-NEXT: calll "?g@@YAXAAH00@Z"
|
||
|
|
|
||
|
|
; CODEVIEW: CodeViewDebugInfo [
|
||
|
|
; CODEVIEW-NEXT: Section: .debug$S (4)
|
||
|
|
; CODEVIEW-NEXT: Magic: 0x4
|
||
|
|
; CODEVIEW-NEXT: Subsection [
|
||
|
|
; CODEVIEW-NEXT: SubSectionType: Symbols (0xF1)
|
||
|
|
; CODEVIEW-NEXT: SubSectionSize:
|
||
|
|
; CODEVIEW-NEXT: Compile3Sym {
|
||
|
|
; CODEVIEW-NEXT: Kind: S_COMPILE3 (0x113C)
|
||
|
|
; CODEVIEW: }
|
||
|
|
; CODEVIEW: ]
|
||
|
|
; CODEVIEW: Subsection [
|
||
|
|
; CODEVIEW-NEXT: SubSectionType: FrameData (0xF5)
|
||
|
|
; CODEVIEW-NEXT: SubSectionSize:
|
||
|
|
; CODEVIEW-NEXT: LinkageName: _main
|
||
|
|
; CODEVIEW: FrameData {
|
||
|
|
; CODEVIEW: }
|
||
|
|
; CODEVIEW: FrameData {
|
||
|
|
; CODEVIEW: }
|
||
|
|
; CODEVIEW: FrameData {
|
||
|
|
; CODEVIEW: }
|
||
|
|
; CODEVIEW: FrameData {
|
||
|
|
; CODEVIEW: }
|
||
|
|
; CODEVIEW: FrameData {
|
||
|
|
; CODEVIEW-NEXT: RvaStart:
|
||
|
|
; CODEVIEW-NEXT: CodeSize:
|
||
|
|
; CODEVIEW-NEXT: LocalSize: 0xC
|
||
|
|
; CODEVIEW-NEXT: ParamsSize: 0x0
|
||
|
|
; CODEVIEW-NEXT: MaxStackSize: 0x0
|
||
|
|
; CODEVIEW-NEXT: PrologSize:
|
||
|
|
; CODEVIEW-NEXT: SavedRegsSize: 0xC
|
||
|
|
; CODEVIEW-NEXT: Flags [ (0x0)
|
||
|
|
; CODEVIEW-NEXT: ]
|
||
|
|
|
||
|
|
; $T0 is the CFA, the address of the return address, and our defranges are
|
||
|
|
; relative to it.
|
||
|
|
; CODEVIEW-NEXT: FrameFunc [
|
||
|
|
; CODEVIEW-NEXT: $T0 .raSearch =
|
||
|
|
; CODEVIEW-NEXT: $eip $T0 ^ =
|
||
|
|
; CODEVIEW-NEXT: $esp $T0 4 + =
|
||
|
|
; CODEVIEW-NEXT: $ebx $T0 4 - ^ =
|
||
|
|
; CODEVIEW-NEXT: $edi $T0 8 - ^ =
|
||
|
|
; CODEVIEW-NEXT: $esi $T0 12 - ^ =
|
||
|
|
; CODEVIEW-NEXT: ]
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
|
||
|
|
; We push 16 bytes in the prologue, so our local variables are at offsets -16,
|
||
|
|
; -20, and -24.
|
||
|
|
|
||
|
|
; CODEVIEW: Subsection [
|
||
|
|
; CODEVIEW-NEXT: SubSectionType: Symbols (0xF1)
|
||
|
|
; CODEVIEW-NEXT: SubSectionSize:
|
||
|
|
; CODEVIEW-NEXT: GlobalProcIdSym {
|
||
|
|
; CODEVIEW-NEXT: Kind: S_GPROC32_ID (0x1147)
|
||
|
|
; CODEVIEW: DisplayName: main
|
||
|
|
; CODEVIEW: LinkageName: _main
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: FrameProcSym {
|
||
|
|
; CODEVIEW-NEXT: Kind: S_FRAMEPROC (0x1012)
|
||
|
|
; CODEVIEW-NEXT: TotalFrameBytes: 0xC
|
||
|
|
; CODEVIEW-NEXT: PaddingFrameBytes: 0x0
|
||
|
|
; CODEVIEW-NEXT: OffsetToPadding: 0x0
|
||
|
|
; CODEVIEW-NEXT: BytesOfCalleeSavedRegisters: 0xC
|
||
|
|
; CODEVIEW-NEXT: OffsetOfExceptionHandler: 0x0
|
||
|
|
; CODEVIEW-NEXT: SectionIdOfExceptionHandler: 0x0
|
||
|
|
; CODEVIEW-NEXT: Flags [ (0x14000)
|
||
|
|
; CODEVIEW-NEXT: ]
|
||
|
|
; CODEVIEW-NEXT: LocalFramePtrReg: VFRAME (0x7536)
|
||
|
|
; CODEVIEW-NEXT: ParamFramePtrReg: VFRAME (0x7536)
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: LocalSym {
|
||
|
|
; CODEVIEW-NEXT: Kind: S_LOCAL (0x113E)
|
||
|
|
; CODEVIEW: VarName: a
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: DefRangeFramePointerRelSym {
|
||
|
|
; CODEVIEW-NEXT: Kind: S_DEFRANGE_FRAMEPOINTER_REL (0x1142)
|
||
|
|
; CODEVIEW-NEXT: Offset: -16
|
||
|
|
; CODEVIEW-NEXT: LocalVariableAddrRange {
|
||
|
|
; CODEVIEW-NEXT: OffsetStart:
|
||
|
|
; CODEVIEW-NEXT: ISectStart:
|
||
|
|
; CODEVIEW-NEXT: Range:
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: LocalSym {
|
||
|
|
; CODEVIEW-NEXT: Kind: S_LOCAL (0x113E)
|
||
|
|
; CODEVIEW: VarName: b
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: DefRangeFramePointerRelSym {
|
||
|
|
; CODEVIEW-NEXT: Kind: S_DEFRANGE_FRAMEPOINTER_REL (0x1142)
|
||
|
|
; CODEVIEW-NEXT: Offset: -20
|
||
|
|
; CODEVIEW-NEXT: LocalVariableAddrRange {
|
||
|
|
; CODEVIEW-NEXT: OffsetStart:
|
||
|
|
; CODEVIEW-NEXT: ISectStart:
|
||
|
|
; CODEVIEW-NEXT: Range:
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: LocalSym {
|
||
|
|
; CODEVIEW-NEXT: Kind: S_LOCAL (0x113E)
|
||
|
|
; CODEVIEW: VarName: c
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: DefRangeFramePointerRelSym {
|
||
|
|
; CODEVIEW-NEXT: Kind: S_DEFRANGE_FRAMEPOINTER_REL (0x1142)
|
||
|
|
; CODEVIEW-NEXT: Offset: -24
|
||
|
|
; CODEVIEW-NEXT: LocalVariableAddrRange {
|
||
|
|
; CODEVIEW-NEXT: OffsetStart:
|
||
|
|
; CODEVIEW-NEXT: ISectStart:
|
||
|
|
; CODEVIEW-NEXT: Range:
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: ProcEnd {
|
||
|
|
; CODEVIEW-NEXT: Kind: S_PROC_ID_END (0x114F)
|
||
|
|
; CODEVIEW-NEXT: }
|
||
|
|
; CODEVIEW-NEXT: ]
|
||
|
|
|
||
|
|
|
||
|
|
; ModuleID = 'fpo.cpp'
|
||
|
|
source_filename = "fpo.cpp"
|
||
|
|
target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
|
||
|
|
target triple = "i386-pc-windows-msvc19.14.26433"
|
||
|
|
|
||
|
|
; Function Attrs: norecurse optsize
|
||
|
|
define dso_local i32 @main() local_unnamed_addr #0 !dbg !8 {
|
||
|
|
entry:
|
||
|
|
%a = alloca i32, align 4
|
||
|
|
%b = alloca i32, align 4
|
||
|
|
%c = alloca i32, align 4
|
||
|
|
%0 = bitcast i32* %a to i8*, !dbg !16
|
||
|
|
call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %0) #4, !dbg !16
|
||
|
|
call void @llvm.dbg.declare(metadata i32* %a, metadata !13, metadata !DIExpression()), !dbg !16
|
||
|
|
store i32 1, i32* %a, align 4, !dbg !16, !tbaa !17
|
||
|
|
%1 = bitcast i32* %b to i8*, !dbg !21
|
||
|
|
call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %1) #4, !dbg !21
|
||
|
|
call void @llvm.dbg.declare(metadata i32* %b, metadata !14, metadata !DIExpression()), !dbg !21
|
||
|
|
store i32 2, i32* %b, align 4, !dbg !21, !tbaa !17
|
||
|
|
%2 = bitcast i32* %c to i8*, !dbg !22
|
||
|
|
call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %2) #4, !dbg !22
|
||
|
|
call void @llvm.dbg.declare(metadata i32* %c, metadata !15, metadata !DIExpression()), !dbg !22
|
||
|
|
store i32 3, i32* %c, align 4, !dbg !22, !tbaa !17
|
||
|
|
call void @"?f@@YAXAAH0@Z"(i32* nonnull dereferenceable(4) %a, i32* nonnull dereferenceable(4) %b) #5, !dbg !23
|
||
|
|
call void @"?g@@YAXAAH00@Z"(i32* nonnull dereferenceable(4) %a, i32* nonnull dereferenceable(4) %b, i32* nonnull dereferenceable(4) %c) #5, !dbg !24
|
||
|
|
%3 = load i32, i32* %a, align 4, !dbg !25, !tbaa !17
|
||
|
|
%4 = load i32, i32* %b, align 4, !dbg !25, !tbaa !17
|
||
|
|
%add = add nsw i32 %4, %3, !dbg !25
|
||
|
|
%5 = load i32, i32* %c, align 4, !dbg !25, !tbaa !17
|
||
|
|
%add1 = add nsw i32 %add, %5, !dbg !25
|
||
|
|
call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %2) #4, !dbg !26
|
||
|
|
call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %1) #4, !dbg !26
|
||
|
|
call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %0) #4, !dbg !26
|
||
|
|
ret i32 %add1, !dbg !25
|
||
|
|
}
|
||
|
|
|
||
|
|
; Function Attrs: argmemonly nounwind
|
||
|
|
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
|
||
|
|
|
||
|
|
; Function Attrs: nounwind readnone speculatable
|
||
|
|
declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
|
||
|
|
|
||
|
|
; Function Attrs: optsize
|
||
|
|
declare dso_local void @"?f@@YAXAAH0@Z"(i32* dereferenceable(4), i32* dereferenceable(4)) local_unnamed_addr #3
|
||
|
|
|
||
|
|
; Function Attrs: optsize
|
||
|
|
declare dso_local void @"?g@@YAXAAH00@Z"(i32* dereferenceable(4), i32* dereferenceable(4), i32* dereferenceable(4)) local_unnamed_addr #3
|
||
|
|
|
||
|
|
; Function Attrs: argmemonly nounwind
|
||
|
|
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
|
||
|
|
|
||
|
|
attributes #0 = { norecurse optsize "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "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"="pentium4" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
||
|
|
attributes #1 = { argmemonly nounwind }
|
||
|
|
attributes #2 = { nounwind readnone speculatable }
|
||
|
|
attributes #3 = { optsize "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"="pentium4" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
||
|
|
attributes #4 = { nounwind }
|
||
|
|
attributes #5 = { optsize }
|
||
|
|
|
||
|
|
!llvm.dbg.cu = !{!0}
|
||
|
|
!llvm.module.flags = !{!3, !4, !5, !6}
|
||
|
|
!llvm.ident = !{!7}
|
||
|
|
|
||
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 8.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
|
||
|
|
!1 = !DIFile(filename: "fpo.cpp", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "d0bb7e43f4e54936a94da008319a7de3")
|
||
|
|
!2 = !{}
|
||
|
|
!3 = !{i32 1, !"NumRegisterParameters", i32 0}
|
||
|
|
!4 = !{i32 2, !"CodeView", i32 1}
|
||
|
|
!5 = !{i32 2, !"Debug Info Version", i32 3}
|
||
|
|
!6 = !{i32 1, !"wchar_size", i32 2}
|
||
|
|
!7 = !{!"clang version 8.0.0 "}
|
||
|
|
!8 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 14, type: !9, isLocal: false, isDefinition: true, scopeLine: 14, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12)
|
||
|
|
!9 = !DISubroutineType(types: !10)
|
||
|
|
!10 = !{!11}
|
||
|
|
!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||
|
|
!12 = !{!13, !14, !15}
|
||
|
|
!13 = !DILocalVariable(name: "a", scope: !8, file: !1, line: 15, type: !11)
|
||
|
|
!14 = !DILocalVariable(name: "b", scope: !8, file: !1, line: 16, type: !11)
|
||
|
|
!15 = !DILocalVariable(name: "c", scope: !8, file: !1, line: 17, type: !11)
|
||
|
|
!16 = !DILocation(line: 15, scope: !8)
|
||
|
|
!17 = !{!18, !18, i64 0}
|
||
|
|
!18 = !{!"int", !19, i64 0}
|
||
|
|
!19 = !{!"omnipotent char", !20, i64 0}
|
||
|
|
!20 = !{!"Simple C++ TBAA"}
|
||
|
|
!21 = !DILocation(line: 16, scope: !8)
|
||
|
|
!22 = !DILocation(line: 17, scope: !8)
|
||
|
|
!23 = !DILocation(line: 18, scope: !8)
|
||
|
|
!24 = !DILocation(line: 19, scope: !8)
|
||
|
|
!25 = !DILocation(line: 20, scope: !8)
|
||
|
|
!26 = !DILocation(line: 21, scope: !8)
|