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1# RUN: llc -o - %s -run-pass=shrink-wrap | FileCheck %s2# RUN: llc -o - %s -passes='shrink-wrap' | FileCheck %s3--- |4 ; ModuleID = '<stdin>'5 source_filename = "t.c"6 target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"7 target triple = "i386-pc-windows-msvc19.11.25508"8 9 ; Function Attrs: nounwind10 define x86_fastcallcc i32 @"@shrink_wrap_basic@16"(i32 inreg %a, i32 inreg %b, i32 %c, i32 %d) local_unnamed_addr #0 !dbg !8 {11 entry:12 %c.addr = alloca i32, align 413 tail call void @llvm.dbg.value(metadata i32 %d, metadata !13, metadata !DIExpression()), !dbg !1914 tail call void @llvm.dbg.value(metadata i32 %c, metadata !14, metadata !DIExpression()), !dbg !2015 store i32 %c, ptr %c.addr, align 4, !tbaa !2116 tail call void @llvm.dbg.value(metadata i32 %b, metadata !15, metadata !DIExpression()), !dbg !2517 tail call void @llvm.dbg.value(metadata i32 %a, metadata !16, metadata !DIExpression()), !dbg !2618 %cmp = icmp slt i32 %a, %b, !dbg !2719 br i1 %cmp, label %return, label %for.cond.preheader, !dbg !2920 21 for.cond.preheader: ; preds = %entry22 %0 = add i32 %c, -1, !dbg !3023 br label %for.cond, !dbg !3024 25 for.cond: ; preds = %for.cond, %for.cond.preheader26 %lsr.iv = phi i32 [ %lsr.iv.next, %for.cond ], [ %0, %for.cond.preheader ]27 call void @llvm.dbg.value(metadata i32 undef, metadata !17, metadata !DIExpression()), !dbg !3228 call void @llvm.dbg.value(metadata ptr %c.addr, metadata !14, metadata !DIExpression()), !dbg !2029 %call = call i32 @doSomething(ptr nonnull %c.addr) #3, !dbg !3330 call void @llvm.dbg.value(metadata !2, metadata !17, metadata !DIExpression()), !dbg !3231 %lsr.iv.next = add i32 %lsr.iv, 1, !dbg !3032 %cmp1 = icmp slt i32 %lsr.iv.next, %d, !dbg !3033 br i1 %cmp1, label %for.cond, label %return, !dbg !34, !llvm.loop !3534 35 return: ; preds = %for.cond, %entry36 %retval.0 = phi i32 [ %a, %entry ], [ %call, %for.cond ]37 ret i32 %retval.0, !dbg !3738 }39 40 declare i32 @doSomething(ptr) local_unnamed_addr41 42 ; Function Attrs: nounwind readnone speculatable43 declare void @llvm.dbg.value(metadata, metadata, metadata) #244 45 ; Function Attrs: nounwind46 declare void @llvm.stackprotector(ptr, ptr) #347 48 attributes #0 = { nounwind }49 attributes #2 = { nounwind readnone speculatable }50 attributes #3 = { nounwind }51 52 !llvm.dbg.cu = !{!0}53 !llvm.module.flags = !{!3, !4, !5, !6}54 !llvm.ident = !{!7}55 56 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)57 !1 = !DIFile(filename: "t.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild", checksumkind: CSK_MD5, checksum: "32f118fd5dd7e65ff7733c49b2f804ef")58 !2 = !{}59 !3 = !{i32 1, !"NumRegisterParameters", i32 0}60 !4 = !{i32 2, !"CodeView", i32 1}61 !5 = !{i32 2, !"Debug Info Version", i32 3}62 !6 = !{i32 1, !"wchar_size", i32 2}63 !7 = !{!"clang version 6.0.0 "}64 !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)65 !9 = !DISubroutineType(cc: DW_CC_BORLAND_msfastcall, types: !10)66 !10 = !{!11, !11, !11, !11, !11}67 !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)68 !12 = !{!13, !14, !15, !16, !17}69 !13 = !DILocalVariable(name: "d", arg: 4, scope: !8, file: !1, line: 2, type: !11)70 !14 = !DILocalVariable(name: "c", arg: 3, scope: !8, file: !1, line: 2, type: !11)71 !15 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !1, line: 2, type: !11)72 !16 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 2, type: !11)73 !17 = !DILocalVariable(name: "i", scope: !18, file: !1, line: 5, type: !11)74 !18 = distinct !DILexicalBlock(scope: !8, file: !1, line: 5, column: 3)75 !19 = !DILocation(line: 2, column: 59, scope: !8)76 !20 = !DILocation(line: 2, column: 52, scope: !8)77 !21 = !{!22, !22, i64 0}78 !22 = !{!"int", !23, i64 0}79 !23 = !{!"omnipotent char", !24, i64 0}80 !24 = !{!"Simple C/C++ TBAA"}81 !25 = !DILocation(line: 2, column: 45, scope: !8)82 !26 = !DILocation(line: 2, column: 38, scope: !8)83 !27 = !DILocation(line: 3, column: 9, scope: !28)84 !28 = distinct !DILexicalBlock(scope: !8, file: !1, line: 3, column: 7)85 !29 = !DILocation(line: 3, column: 7, scope: !8)86 !30 = !DILocation(line: 5, column: 21, scope: !31)87 !31 = distinct !DILexicalBlock(scope: !18, file: !1, line: 5, column: 3)88 !32 = !DILocation(line: 5, column: 12, scope: !18)89 !33 = !DILocation(line: 0, scope: !8)90 !34 = !DILocation(line: 5, column: 3, scope: !18)91 !35 = distinct !{!35, !34, !36}92 !36 = !DILocation(line: 6, column: 19, scope: !18)93 !37 = !DILocation(line: 8, column: 1, scope: !8)94 95...96---97name: '@shrink_wrap_basic@16'98alignment: 1699exposesReturnsTwice: false100legalized: false101regBankSelected: false102selected: false103tracksRegLiveness: true104registers: 105liveins: 106 - { reg: '$ecx', virtual-reg: '' }107 - { reg: '$edx', virtual-reg: '' }108frameInfo: 109 isFrameAddressTaken: false110 isReturnAddressTaken: false111 hasStackMap: false112 hasPatchPoint: false113 stackSize: 0114 offsetAdjustment: 0115 maxAlignment: 4116 adjustsStack: false117 hasCalls: true118 stackProtector: ''119 maxCallFrameSize: 4294967295120 hasOpaqueSPAdjustment: false121 hasVAStart: false122 hasMustTailInVarArgFunc: false123 # CHECK: savePoint:124 # CHECK-NEXT: - point: '%bb.1'125 # CHECK: restorePoint:126 # CHECK-NEXT: - point: '%bb.3'127 savePoint: []128 restorePoint: []129fixedStack: 130 - { id: 0, type: default, offset: 4, size: 4, alignment: 4, stack-id: default,131 isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true }132 - { id: 1, type: default, offset: 0, size: 4, alignment: 4, stack-id: default,133 isImmutable: false, isAliased: false, callee-saved-register: '', 134 callee-saved-restored: true }135stack: 136constants: 137body: |138 bb.0.entry:139 successors: %bb.4(0x40000000), %bb.1(0x40000000)140 liveins: $ecx, $edx141 142 DBG_VALUE $edx, $noreg, !15, !DIExpression(), debug-location !25143 DBG_VALUE $ecx, $noreg, !16, !DIExpression(), debug-location !26144 $eax = COPY $ecx145 DBG_VALUE %fixed-stack.0, 0, !16, !DIExpression(), debug-location !26146 DBG_VALUE %fixed-stack.1, 0, !15, !DIExpression(), debug-location !25147 CMP32rr $eax, killed $edx, implicit-def $eflags, debug-location !27148 JCC_1 %bb.4, 12, implicit killed $eflags, debug-location !29149 JMP_1 %bb.1, debug-location !29150 151 bb.1.for.cond.preheader:152 successors: %bb.2(0x80000000)153 154 $esi = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.0)155 DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !19156 $edi = MOV32rm %fixed-stack.1, 1, $noreg, 0, $noreg :: (load (s32) from %fixed-stack.1)157 DBG_VALUE $edi, $noreg, !14, !DIExpression(), debug-location !20158 $edi = DEC32r killed $edi, implicit-def dead $eflags, debug-location !30159 $ebx = LEA32r %fixed-stack.1, 1, $noreg, 0, $noreg160 161 bb.2.for.cond:162 successors: %bb.2(0x7c000000), %bb.3(0x04000000)163 liveins: $ebx, $edi, $esi164 165 ADJCALLSTACKDOWN32 4, 0, 4, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp, debug-location !33166 DBG_VALUE %fixed-stack.1, 0, !14, !DIExpression(), debug-location !20167 PUSH32r $ebx, implicit-def $esp, implicit $esp, debug-location !33168 CFI_INSTRUCTION adjust_cfa_offset 4, debug-location !33169 CALLpcrel32 @doSomething, csr_32, implicit $esp, implicit $ssp, implicit-def $esp, implicit-def $ssp, implicit-def $eax, debug-location !33170 ADJCALLSTACKUP32 4, 0, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp, debug-location !33171 $edi = INC32r killed $edi, implicit-def dead $eflags, debug-location !30172 CMP32rr $edi, $esi, implicit-def $eflags, debug-location !30173 JCC_1 %bb.2, 12, implicit killed $eflags, debug-location !34174 175 bb.3:176 successors: %bb.4(0x80000000)177 liveins: $eax178 179 180 bb.4.return:181 liveins: $eax182 183 RET 8, $eax, debug-location !37184 185...186