180 lines
7.2 KiB
LLVM
180 lines
7.2 KiB
LLVM
; RUN: llc < %s | FileCheck %s --check-prefix=ASM
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; RUN: llc -filetype=obj < %s | llvm-readobj -codeview | FileCheck %s --check-prefix=OBJ
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; PR38857
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; This test case is identical to the fpo-realign-vframe.ll test, except it uses
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; two callee-saved registers.
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; Match the prologue for the .cv_fpo* directives.
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; ASM-LABEL: _realign_with_csrs:
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; ASM: .cv_fpo_proc _realign_with_csrs 0
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; ASM: # %bb.0: # %entry
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; ASM: pushl %ebp
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; ASM: .cv_fpo_pushreg %ebp
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; ASM: movl %esp, %ebp
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; ASM: .cv_fpo_setframe %ebp
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; ASM: andl $-8, %esp
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; ASM: .cv_fpo_stackalign 8
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; FIXME: Why 24 bytes? We only need 12 bytes of data.
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; ASM: subl $24, %esp
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; ASM: .cv_fpo_stackalloc 24
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; ASM: .cv_fpo_endprologue
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; 'x' should be EBP-relative, 'a' and 'force_alignment' ESP relative.
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; ASM: calll _getval
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; ASM-DAG: leal 8(%esp), %[[LEA_DBL:[^ ]*]]
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; ASM-DAG: leal 4(%esp), %[[LEA_A:[^ ]*]]
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; ASM: pushl %[[LEA_DBL]]
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; ASM: pushl %[[LEA_A]]
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; ASM: pushl %[[LEA_A]]
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; ASM: calll _usevals
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; ASM: addl $12, %esp
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; OBJ: Subsection [
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; OBJ: SubSectionType: Symbols (0xF1)
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; OBJ: ]
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; OBJ: Subsection [
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; OBJ: SubSectionType: FrameData (0xF5)
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; Really, the only important FrameFunc is the last one.
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; OBJ: FrameData {
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; OBJ: }
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; OBJ: FrameData {
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; OBJ: }
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; OBJ: FrameData {
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; OBJ: }
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; OBJ: FrameData {
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; OBJ: }
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; OBJ: FrameData {
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; OBJ: FrameFunc [
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; OBJ-NEXT: $T1 $ebp 4 + =
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; OBJ-NEXT: $T0 $T1 8 - 8 @ =
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; OBJ-NEXT: $eip $T1 ^ =
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; OBJ-NEXT: $esp $T1 4 + =
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; OBJ-NEXT: $ebp $T1 4 - ^ =
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; OBJ-NEXT: $esi $T1 8 - ^ =
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; OBJ-NEXT: ]
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; OBJ: }
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; OBJ: ]
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; OBJ: Subsection [
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; OBJ: SubSectionType: Symbols (0xF1)
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; OBJ: GlobalProcIdSym {
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; OBJ: Kind: S_GPROC32_ID (0x1147)
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; OBJ: DisplayName: realign_with_csrs
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; OBJ: LinkageName: _realign_with_csrs
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; OBJ: }
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; The frame register for locals should be VFRAME, and EBP for parameters.
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; OBJ: FrameProcSym {
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; OBJ: Kind: S_FRAMEPROC (0x1012)
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; OBJ: TotalFrameBytes: 0x18
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; OBJ: LocalFramePtrReg: VFRAME (0x7536)
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; OBJ: ParamFramePtrReg: EBP (0x16)
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; OBJ: }
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; ESP is VFRAME - 24, ESP offset of 'a' is 4, so -20.
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; OBJ: LocalSym {
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; OBJ: Kind: S_LOCAL (0x113E)
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; OBJ: Type: int (0x74)
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; OBJ: Flags [ (0x0)
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; OBJ: ]
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; OBJ: VarName: a
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; OBJ: }
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; OBJ: DefRangeFramePointerRelSym {
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; OBJ: Kind: S_DEFRANGE_FRAMEPOINTER_REL (0x1142)
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; OBJ: Offset: -20
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; OBJ: }
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; ESP is VFRAME - 16, ESP offset of 'force_alignment' is 8, so -8.
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; OBJ: LocalSym {
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; OBJ: Kind: S_LOCAL (0x113E)
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; OBJ: Type: double (0x41)
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; OBJ: Flags [ (0x0)
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; OBJ: ]
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; OBJ: VarName: force_alignment
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; OBJ: }
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; OBJ: DefRangeFramePointerRelSym {
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; OBJ: Kind: S_DEFRANGE_FRAMEPOINTER_REL (0x1142)
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; OBJ: Offset: -16
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; OBJ: }
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; OBJ: ProcEnd {
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; OBJ: Kind: S_PROC_ID_END (0x114F)
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; OBJ: }
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; OBJ: ]
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; ModuleID = 't.c'
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source_filename = "t.c"
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i386-pc-windows-msvc19.14.26433"
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; Function Attrs: nounwind
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define dso_local i32 @realign_with_csrs() local_unnamed_addr #0 !dbg !8 {
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entry:
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%a = alloca i32, align 4
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%force_alignment = alloca double, align 8
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%0 = bitcast i32* %a to i8*, !dbg !22
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call void @llvm.dbg.declare(metadata i32* %a, metadata !14, metadata !DIExpression()), !dbg !22
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%csr1 = tail call i32 @getval() #4
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%call = tail call i32 @getval() #4, !dbg !22
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store i32 %call, i32* %a, align 4, !dbg !22, !tbaa !17
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%1 = bitcast double* %force_alignment to i8*, !dbg !23
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call void @llvm.lifetime.start.p0i8(i64 8, i8* nonnull %1) #4, !dbg !23
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call void @llvm.dbg.declare(metadata double* %force_alignment, metadata !15, metadata !DIExpression()), !dbg !23
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store double 4.200000e-01, double* %force_alignment, align 8, !dbg !23, !tbaa !24
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call void @usevals(i32* nonnull %a, i32* nonnull %a, double* nonnull %force_alignment) #4, !dbg !26
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call void @usecsrs(i32 %csr1, i32 %csr1)
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ret i32 0
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #2
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declare dso_local i32 @getval() local_unnamed_addr #3
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declare dso_local void @usevals(i32*, i32*, double*) local_unnamed_addr #3
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declare dso_local void @usecsrs(i32, i32) local_unnamed_addr #3
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #2
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attributes #0 = { nounwind "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-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" }
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attributes #1 = { nounwind readnone speculatable }
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attributes #2 = { argmemonly nounwind }
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attributes #3 = { "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"="pentium4" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #4 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5, !6}
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!llvm.ident = !{!7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "a646950309d5d01d8087fc10fea33941")
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!2 = !{}
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!3 = !{i32 1, !"NumRegisterParameters", i32 0}
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!4 = !{i32 2, !"CodeView", i32 1}
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!5 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = !{i32 1, !"wchar_size", i32 2}
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!7 = !{!"clang version 8.0.0 "}
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!8 = distinct !DISubprogram(name: "realign_with_csrs", scope: !1, file: !1, line: 3, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12)
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!9 = !DISubroutineType(types: !10)
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!10 = !{!11, !11}
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!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!12 = !{!13, !14, !15}
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!13 = !DILocalVariable(name: "x", arg: 1, scope: !8, file: !1, line: 3, type: !11)
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!14 = !DILocalVariable(name: "a", scope: !8, file: !1, line: 4, type: !11)
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!15 = !DILocalVariable(name: "force_alignment", scope: !8, file: !1, line: 5, type: !16, align: 64)
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!16 = !DIBasicType(name: "double", size: 64, encoding: DW_ATE_float)
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!17 = !{!18, !18, i64 0}
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!18 = !{!"int", !19, i64 0}
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!19 = !{!"omnipotent char", !20, i64 0}
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!20 = !{!"Simple C/C++ TBAA"}
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!21 = !DILocation(line: 3, scope: !8)
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!22 = !DILocation(line: 4, scope: !8)
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!23 = !DILocation(line: 5, scope: !8)
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!24 = !{!25, !25, i64 0}
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!25 = !{!"double", !19, i64 0}
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!26 = !DILocation(line: 6, scope: !8)
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!27 = !DILocation(line: 7, scope: !8)
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!28 = !DILocation(line: 8, scope: !8)
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