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1; RUN: llc -enable-shrink-wrap=true < %s -experimental-debug-variable-locations=true | FileCheck %s --check-prefix=ASM2; RUN: llc -enable-shrink-wrap=true -filetype=obj < %s -experimental-debug-variable-locations=true | llvm-readobj --codeview - | FileCheck %s --check-prefix=OBJ3 4; C source:5; int doSomething(int*);6; int __fastcall shrink_wrap_basic(int a, int b, int c, int d) {7; if (a < b)8; return a;9; for (int i = c; i < d; ++i)10; doSomething(&c);11; return doSomething(&c);12; }13 14; ASM: @shrink_wrap_basic@16: # @"\01@shrink_wrap_basic@16"15; ASM: .cv_fpo_proc @shrink_wrap_basic@16 816; ASM: .cv_loc 0 1 3 9 # t.c:3:917; ASM: movl %ecx, %eax18; ASM: cmpl %edx, %ecx19; ASM: jl [[EPILOGUE:LBB0_[0-9]+]]20 21; ASM: pushl %ebx22; ASM: .cv_fpo_pushreg %ebx23; ASM: pushl %edi24; ASM: .cv_fpo_pushreg %edi25; ASM: pushl %esi26; ASM: .cv_fpo_pushreg %esi27; ASM: .cv_fpo_endprologue28 29; ASM: calll _doSomething30 31; ASM: popl %esi32; ASM: popl %edi33; ASM: popl %ebx34; ASM: [[EPILOGUE]]: # %return35; ASM: retl $836; ASM: Ltmp12:37; ASM: .cv_fpo_endproc38 39; Note how RvaStart advances 7 bytes to skip the shrink-wrapped portion.40; OBJ: SubSectionType: FrameData (0xF5)41; OBJ: FrameData {42; OBJ: RvaStart: 0x043; OBJ: CodeSize: 0x3444; OBJ: PrologSize: 0x945; OBJ: FrameFunc [46; OBJ-NEXT: $T0 .raSearch =47; OBJ-NEXT: $eip $T0 ^ =48; OBJ-NEXT: $esp $T0 4 + =49; OBJ-NEXT: ]50; OBJ: }51; OBJ: FrameData {52; OBJ: RvaStart: 0x753; OBJ: CodeSize: 0x2D54; OBJ: PrologSize: 0x255; OBJ: FrameFunc [56; OBJ-NEXT: $T0 .raSearch =57; OBJ-NEXT: $eip $T0 ^ =58; OBJ-NEXT: $esp $T0 4 + =59; OBJ-NEXT: $ebx $T0 4 - ^ =60; OBJ-NEXT: ]61; OBJ: }62; OBJ: FrameData {63; OBJ: RvaStart: 0x864; OBJ: CodeSize: 0x2C65; OBJ: PrologSize: 0x166; OBJ: FrameFunc [67; OBJ-NEXT: $T0 .raSearch =68; OBJ-NEXT: $eip $T0 ^ =69; OBJ-NEXT: $esp $T0 4 + =70; OBJ-NEXT: $ebx $T0 4 - ^ =71; OBJ-NEXT: $edi $T0 8 - ^ =72; OBJ-NEXT: ]73; OBJ: }74; OBJ: FrameData {75; OBJ: RvaStart: 0x976; OBJ: CodeSize: 0x2B77; OBJ: PrologSize: 0x078; OBJ: FrameFunc [79; OBJ-NEXT: $T0 .raSearch =80; OBJ-NEXT: $eip $T0 ^ =81; OBJ-NEXT: $esp $T0 4 + =82; OBJ-NEXT: $ebx $T0 4 - ^ =83; OBJ-NEXT: $edi $T0 8 - ^ =84; OBJ-NEXT: $esi $T0 12 - ^ =85; OBJ-NEXT: ]86; OBJ: }87; OBJ-NOT: FrameData88 89; ModuleID = 't.c'90source_filename = "t.c"91target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"92target triple = "i386-pc-windows-msvc19.11.25508"93 94; Function Attrs: nounwind95define x86_fastcallcc i32 @"\01@shrink_wrap_basic@16"(i32 inreg %a, i32 inreg %b, i32 %c, i32 %d) local_unnamed_addr #0 !dbg !8 {96entry:97 %c.addr = alloca i32, align 498 tail call void @llvm.dbg.value(metadata i32 %d, metadata !13, metadata !DIExpression()), !dbg !1999 tail call void @llvm.dbg.value(metadata i32 %c, metadata !14, metadata !DIExpression()), !dbg !20100 store i32 %c, ptr %c.addr, align 4, !tbaa !21101 tail call void @llvm.dbg.value(metadata i32 %b, metadata !15, metadata !DIExpression()), !dbg !25102 tail call void @llvm.dbg.value(metadata i32 %a, metadata !16, metadata !DIExpression()), !dbg !26103 %cmp = icmp slt i32 %a, %b, !dbg !27104 br i1 %cmp, label %return, label %for.cond.preheader, !dbg !29105 106for.cond.preheader: ; preds = %entry107 br label %for.cond, !dbg !30108 109for.cond: ; preds = %for.cond.preheader, %for.cond110 %i.0 = phi i32 [ %inc, %for.cond ], [ %c, %for.cond.preheader ]111 call void @llvm.dbg.value(metadata i32 %i.0, metadata !17, metadata !DIExpression()), !dbg !32112 %cmp1 = icmp slt i32 %i.0, %d, !dbg !30113 call void @llvm.dbg.value(metadata ptr %c.addr, metadata !14, metadata !DIExpression()), !dbg !20114 %call = call i32 @doSomething(ptr nonnull %c.addr) #3, !dbg !33115 %inc = add nsw i32 %i.0, 1, !dbg !34116 call void @llvm.dbg.value(metadata i32 %inc, metadata !17, metadata !DIExpression()), !dbg !32117 br i1 %cmp1, label %for.cond, label %return, !dbg !35, !llvm.loop !36118 119return: ; preds = %for.cond, %entry120 %retval.0 = phi i32 [ %a, %entry ], [ %call, %for.cond ]121 ret i32 %retval.0, !dbg !38122}123 124declare i32 @doSomething(ptr) local_unnamed_addr #1125 126; Function Attrs: nounwind readnone speculatable127declare void @llvm.dbg.value(metadata, metadata, metadata) #2128 129attributes #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" }130attributes #1 = { "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" }131attributes #2 = { nounwind readnone speculatable }132attributes #3 = { nounwind }133 134!llvm.dbg.cu = !{!0}135!llvm.module.flags = !{!3, !4, !5, !6}136!llvm.ident = !{!7}137 138!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)139!1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "32f118fd5dd7e65ff7733c49b2f804ef")140!2 = !{}141!3 = !{i32 1, !"NumRegisterParameters", i32 0}142!4 = !{i32 2, !"CodeView", i32 1}143!5 = !{i32 2, !"Debug Info Version", i32 3}144!6 = !{i32 1, !"wchar_size", i32 2}145!7 = !{!"clang version 6.0.0 "}146!8 = distinct !DISubprogram(name: "shrink_wrap_basic", linkageName: "\01@shrink_wrap_basic@16", scope: !1, file: !1, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12)147!9 = !DISubroutineType(cc: DW_CC_BORLAND_msfastcall, types: !10)148!10 = !{!11, !11, !11, !11, !11}149!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)150!12 = !{!13, !14, !15, !16, !17}151!13 = !DILocalVariable(name: "d", arg: 4, scope: !8, file: !1, line: 2, type: !11)152!14 = !DILocalVariable(name: "c", arg: 3, scope: !8, file: !1, line: 2, type: !11)153!15 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !1, line: 2, type: !11)154!16 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 2, type: !11)155!17 = !DILocalVariable(name: "i", scope: !18, file: !1, line: 5, type: !11)156!18 = distinct !DILexicalBlock(scope: !8, file: !1, line: 5, column: 3)157!19 = !DILocation(line: 2, column: 59, scope: !8)158!20 = !DILocation(line: 2, column: 52, scope: !8)159!21 = !{!22, !22, i64 0}160!22 = !{!"int", !23, i64 0}161!23 = !{!"omnipotent char", !24, i64 0}162!24 = !{!"Simple C/C++ TBAA"}163!25 = !DILocation(line: 2, column: 45, scope: !8)164!26 = !DILocation(line: 2, column: 38, scope: !8)165!27 = !DILocation(line: 3, column: 9, scope: !28)166!28 = distinct !DILexicalBlock(scope: !8, file: !1, line: 3, column: 7)167!29 = !DILocation(line: 3, column: 7, scope: !8)168!30 = !DILocation(line: 5, column: 21, scope: !31)169!31 = distinct !DILexicalBlock(scope: !18, file: !1, line: 5, column: 3)170!32 = !DILocation(line: 5, column: 12, scope: !18)171!33 = !DILocation(line: 0, scope: !8)172!34 = !DILocation(line: 5, column: 26, scope: !31)173!35 = !DILocation(line: 5, column: 3, scope: !18)174!36 = distinct !{!36, !35, !37}175!37 = !DILocation(line: 6, column: 19, scope: !18)176!38 = !DILocation(line: 8, column: 1, scope: !8)177