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1; RUN: llc < %s | FileCheck %s --check-prefix=ASM2; RUN: llc -filetype=obj < %s | llvm-readobj --codeview - | FileCheck %s --check-prefix=OBJ3 4; PR388575 6; This test case is identical to the fpo-realign-vframe.ll test, except it uses7; two callee-saved registers.8 9; Match the prologue for the .cv_fpo* directives.10; ASM-LABEL: _realign_with_csrs:11; ASM: .cv_fpo_proc _realign_with_csrs 012; ASM: # %bb.0: # %entry13; ASM: pushl %ebp14; ASM: .cv_fpo_pushreg %ebp15; ASM: movl %esp, %ebp16; ASM: .cv_fpo_setframe %ebp17; ASM: andl $-8, %esp18; ASM: .cv_fpo_stackalign 819; FIXME: Why 24 bytes? We only need 12 bytes of data.20; ASM: subl $24, %esp21; ASM: .cv_fpo_stackalloc 2422; ASM: .cv_fpo_endprologue23 24; 'x' should be EBP-relative, 'a' and 'force_alignment' ESP relative.25; ASM: calll _getval26; ASM-DAG: leal 8(%esp), %[[LEA_DBL:[^ ]*]]27; ASM-DAG: leal 4(%esp), %[[LEA_A:[^ ]*]]28; ASM: pushl %[[LEA_DBL]]29; ASM: pushl %[[LEA_A]]30; ASM: pushl %[[LEA_A]]31; ASM: calll _usevals32; ASM: addl $12, %esp33 34; OBJ: Subsection [35; OBJ: SubSectionType: Symbols (0xF1)36; OBJ: ]37; OBJ: Subsection [38; OBJ: SubSectionType: FrameData (0xF5)39; Really, the only important FrameFunc is the last one.40; OBJ: FrameData {41; OBJ: }42; OBJ: FrameData {43; OBJ: }44; OBJ: FrameData {45; OBJ: }46; OBJ: FrameData {47; OBJ: }48; OBJ: FrameData {49; OBJ: FrameFunc [50; OBJ-NEXT: $T1 $ebp 4 + =51; OBJ-NEXT: $T0 $T1 8 - 8 @ =52; OBJ-NEXT: $eip $T1 ^ =53; OBJ-NEXT: $esp $T1 4 + =54; OBJ-NEXT: $ebp $T1 4 - ^ =55; OBJ-NEXT: $esi $T1 8 - ^ =56; OBJ-NEXT: ]57; OBJ: }58; OBJ: ]59; OBJ: Subsection [60; OBJ: SubSectionType: Symbols (0xF1)61; OBJ: GlobalProcIdSym {62; OBJ: Kind: S_GPROC32_ID (0x1147)63; OBJ: DisplayName: realign_with_csrs64; OBJ: LinkageName: _realign_with_csrs65; OBJ: }66; The frame register for locals should be VFRAME, and EBP for parameters.67; OBJ: FrameProcSym {68; OBJ: Kind: S_FRAMEPROC (0x1012)69; OBJ: TotalFrameBytes: 0x1870; OBJ: LocalFramePtrReg: VFRAME (0x7536)71; OBJ: ParamFramePtrReg: EBP (0x16)72; OBJ: }73; ESP is VFRAME - 24, ESP offset of 'a' is 4, so -20.74; OBJ: LocalSym {75; OBJ: Kind: S_LOCAL (0x113E)76; OBJ: Type: int (0x74)77; OBJ: Flags [ (0x0)78; OBJ: ]79; OBJ: VarName: a80; OBJ: }81; OBJ: DefRangeFramePointerRelSym {82; OBJ: Kind: S_DEFRANGE_FRAMEPOINTER_REL (0x1142)83; OBJ: Offset: -2084; OBJ: }85; ESP is VFRAME - 16, ESP offset of 'force_alignment' is 8, so -8.86; OBJ: LocalSym {87; OBJ: Kind: S_LOCAL (0x113E)88; OBJ: Type: double (0x41)89; OBJ: Flags [ (0x0)90; OBJ: ]91; OBJ: VarName: force_alignment92; OBJ: }93; OBJ: DefRangeFramePointerRelSym {94; OBJ: Kind: S_DEFRANGE_FRAMEPOINTER_REL (0x1142)95; OBJ: Offset: -1696; OBJ: }97; OBJ: ProcEnd {98; OBJ: Kind: S_PROC_ID_END (0x114F)99; OBJ: }100; OBJ: ]101 102; ModuleID = 't.c'103source_filename = "t.c"104target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"105target triple = "i386-pc-windows-msvc19.14.26433"106 107; Function Attrs: nounwind108define dso_local i32 @realign_with_csrs() local_unnamed_addr #0 !dbg !8 {109entry:110 %a = alloca i32, align 4111 %force_alignment = alloca double, align 8112 call void @llvm.dbg.declare(metadata ptr %a, metadata !14, metadata !DIExpression()), !dbg !22113 %csr1 = tail call i32 @getval() #4114 %call = tail call i32 @getval() #4, !dbg !22115 store i32 %call, ptr %a, align 4, !dbg !22, !tbaa !17116 call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %force_alignment) #4, !dbg !23117 call void @llvm.dbg.declare(metadata ptr %force_alignment, metadata !15, metadata !DIExpression()), !dbg !23118 store double 4.200000e-01, ptr %force_alignment, align 8, !dbg !23, !tbaa !24119 call void @usevals(ptr nonnull %a, ptr nonnull %a, ptr nonnull %force_alignment) #4, !dbg !26120 call void @usecsrs(i32 %csr1, i32 %csr1)121 ret i32 0122}123 124; Function Attrs: nounwind readnone speculatable125declare void @llvm.dbg.declare(metadata, metadata, metadata) #1126 127; Function Attrs: argmemonly nounwind128declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #2129 130declare dso_local i32 @getval() local_unnamed_addr #3131 132declare dso_local void @usevals(ptr, ptr, ptr) local_unnamed_addr #3133 134declare dso_local void @usecsrs(i32, i32) local_unnamed_addr #3135 136; Function Attrs: argmemonly nounwind137declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #2138 139attributes #0 = { nounwind "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" "use-soft-float"="false" }140attributes #1 = { nounwind readnone speculatable }141attributes #2 = { argmemonly nounwind }142attributes #3 = { "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" "use-soft-float"="false" }143attributes #4 = { nounwind }144 145!llvm.dbg.cu = !{!0}146!llvm.module.flags = !{!3, !4, !5, !6}147!llvm.ident = !{!7}148 149!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)150!1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "a646950309d5d01d8087fc10fea33941")151!2 = !{}152!3 = !{i32 1, !"NumRegisterParameters", i32 0}153!4 = !{i32 2, !"CodeView", i32 1}154!5 = !{i32 2, !"Debug Info Version", i32 3}155!6 = !{i32 1, !"wchar_size", i32 2}156!7 = !{!"clang version 8.0.0 "}157!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)158!9 = !DISubroutineType(types: !10)159!10 = !{!11, !11}160!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)161!12 = !{!13, !14, !15}162!13 = !DILocalVariable(name: "x", arg: 1, scope: !8, file: !1, line: 3, type: !11)163!14 = !DILocalVariable(name: "a", scope: !8, file: !1, line: 4, type: !11)164!15 = !DILocalVariable(name: "force_alignment", scope: !8, file: !1, line: 5, type: !16, align: 64)165!16 = !DIBasicType(name: "double", size: 64, encoding: DW_ATE_float)166!17 = !{!18, !18, i64 0}167!18 = !{!"int", !19, i64 0}168!19 = !{!"omnipotent char", !20, i64 0}169!20 = !{!"Simple C/C++ TBAA"}170!21 = !DILocation(line: 3, scope: !8)171!22 = !DILocation(line: 4, scope: !8)172!23 = !DILocation(line: 5, scope: !8)173!24 = !{!25, !25, i64 0}174!25 = !{!"double", !19, i64 0}175!26 = !DILocation(line: 6, scope: !8)176!27 = !DILocation(line: 7, scope: !8)177!28 = !DILocation(line: 8, scope: !8)178