1; RUN: llc < %s | FileCheck %s --check-prefix=ASM 2; RUN: llc -filetype=obj < %s | llvm-readobj --codeview | FileCheck %s --check-prefix=OBJ 3 4; PR38857 5 6; This test case is identical to the fpo-realign-vframe.ll test, except it uses 7; 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 0 12; ASM: # %bb.0: # %entry 13; ASM: pushl %ebp 14; ASM: .cv_fpo_pushreg %ebp 15; ASM: movl %esp, %ebp 16; ASM: .cv_fpo_setframe %ebp 17; ASM: andl $-8, %esp 18; ASM: .cv_fpo_stackalign 8 19; FIXME: Why 24 bytes? We only need 12 bytes of data. 20; ASM: subl $24, %esp 21; ASM: .cv_fpo_stackalloc 24 22; ASM: .cv_fpo_endprologue 23 24; 'x' should be EBP-relative, 'a' and 'force_alignment' ESP relative. 25; ASM: calll _getval 26; 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 _usevals 32; ASM: addl $12, %esp 33 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_csrs 64; OBJ: LinkageName: _realign_with_csrs 65; 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: 0x18 70; 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: a 80; OBJ: } 81; OBJ: DefRangeFramePointerRelSym { 82; OBJ: Kind: S_DEFRANGE_FRAMEPOINTER_REL (0x1142) 83; OBJ: Offset: -20 84; 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_alignment 92; OBJ: } 93; OBJ: DefRangeFramePointerRelSym { 94; OBJ: Kind: S_DEFRANGE_FRAMEPOINTER_REL (0x1142) 95; OBJ: Offset: -16 96; 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: nounwind 108define dso_local i32 @realign_with_csrs() local_unnamed_addr #0 !dbg !8 { 109entry: 110 %a = alloca i32, align 4 111 %force_alignment = alloca double, align 8 112 %0 = bitcast i32* %a to i8*, !dbg !22 113 call void @llvm.dbg.declare(metadata i32* %a, metadata !14, metadata !DIExpression()), !dbg !22 114 %csr1 = tail call i32 @getval() #4 115 %call = tail call i32 @getval() #4, !dbg !22 116 store i32 %call, i32* %a, align 4, !dbg !22, !tbaa !17 117 %1 = bitcast double* %force_alignment to i8*, !dbg !23 118 call void @llvm.lifetime.start.p0i8(i64 8, i8* nonnull %1) #4, !dbg !23 119 call void @llvm.dbg.declare(metadata double* %force_alignment, metadata !15, metadata !DIExpression()), !dbg !23 120 store double 4.200000e-01, double* %force_alignment, align 8, !dbg !23, !tbaa !24 121 call void @usevals(i32* nonnull %a, i32* nonnull %a, double* nonnull %force_alignment) #4, !dbg !26 122 call void @usecsrs(i32 %csr1, i32 %csr1) 123 ret i32 0 124} 125 126; Function Attrs: nounwind readnone speculatable 127declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 128 129; Function Attrs: argmemonly nounwind 130declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #2 131 132declare dso_local i32 @getval() local_unnamed_addr #3 133 134declare dso_local void @usevals(i32*, i32*, double*) local_unnamed_addr #3 135 136declare dso_local void @usecsrs(i32, i32) local_unnamed_addr #3 137 138; Function Attrs: argmemonly nounwind 139declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #2 140 141attributes #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" } 142attributes #1 = { nounwind readnone speculatable } 143attributes #2 = { argmemonly nounwind } 144attributes #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" } 145attributes #4 = { nounwind } 146 147!llvm.dbg.cu = !{!0} 148!llvm.module.flags = !{!3, !4, !5, !6} 149!llvm.ident = !{!7} 150 151!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) 152!1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "a646950309d5d01d8087fc10fea33941") 153!2 = !{} 154!3 = !{i32 1, !"NumRegisterParameters", i32 0} 155!4 = !{i32 2, !"CodeView", i32 1} 156!5 = !{i32 2, !"Debug Info Version", i32 3} 157!6 = !{i32 1, !"wchar_size", i32 2} 158!7 = !{!"clang version 8.0.0 "} 159!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) 160!9 = !DISubroutineType(types: !10) 161!10 = !{!11, !11} 162!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 163!12 = !{!13, !14, !15} 164!13 = !DILocalVariable(name: "x", arg: 1, scope: !8, file: !1, line: 3, type: !11) 165!14 = !DILocalVariable(name: "a", scope: !8, file: !1, line: 4, type: !11) 166!15 = !DILocalVariable(name: "force_alignment", scope: !8, file: !1, line: 5, type: !16, align: 64) 167!16 = !DIBasicType(name: "double", size: 64, encoding: DW_ATE_float) 168!17 = !{!18, !18, i64 0} 169!18 = !{!"int", !19, i64 0} 170!19 = !{!"omnipotent char", !20, i64 0} 171!20 = !{!"Simple C/C++ TBAA"} 172!21 = !DILocation(line: 3, scope: !8) 173!22 = !DILocation(line: 4, scope: !8) 174!23 = !DILocation(line: 5, scope: !8) 175!24 = !{!25, !25, i64 0} 176!25 = !{!"double", !19, i64 0} 177!26 = !DILocation(line: 6, scope: !8) 178!27 = !DILocation(line: 7, scope: !8) 179!28 = !DILocation(line: 8, scope: !8) 180