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1# RUN: llc %s -o - -experimental-debug-variable-locations \2# RUN: -start-before=x86-flags-copy-lowering -stop-after=virtregrewriter \3# RUN: -mtriple x86_64-unknown-unknown -enable-split-loopiv-heuristic=false \4# RUN: | FileCheck %s5#6# This test is for stack spill folding -- the INC32r near the end of the MIR7# below show be morphed into an INC32m by the register allocator, making it8# load-operate-store to %stack.0. We should track this fact in the substitution9# table, by adding a substitution to the memory-operand operand number.10#11# The INC32r is a tied-def instruction.12#13# NB: This test would more ideally start at phi-node-elimination, where14# register allocation begins, however for some reason the INC32r gets15# transformed into a different instruction if we do that. Start at the last16# optimisation pass before regalloc instead.17#18# CHECK: debugValueSubstitutions:19# CHECK-NEXT: - { srcinst: 1, srcop: 0, dstinst: 2, dstop: 1000000, subreg: 0 }20# CHECK-LABEL: bb.5:21# CHECK: INC32m %stack.0, {{.*}} debug-instr-number 2,22--- |23 ; ModuleID = 'reduced.ll'24 source_filename = "reduced.ll"25 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"26 27 %"class.llvm::APInt" = type { i32, %union.anon }28 %union.anon = type { i64 }29 30 define void @_ZNK4llvm5APInt5magicEv() local_unnamed_addr align 2 !dbg !7 {31 ret void32 }33 34 !llvm.dbg.cu = !{!0}35 !llvm.module.flags = !{!3, !4, !5}36 !llvm.ident = !{!6}37 38 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)39 !1 = !DIFile(filename: "test.c", directory: ".")40 !2 = !{}41 !3 = !{i32 7, !"Dwarf Version", i32 4}42 !4 = !{i32 2, !"Debug Info Version", i32 3}43 !5 = !{i32 1, !"wchar_size", i32 4}44 !6 = !{!"clang"}45 !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)46 !8 = !DISubroutineType(types: !9)47 !9 = !{!10, !11, !11}48 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)49 !11 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)50 !12 = !DILocalVariable(name: "bar", arg: 1, scope: !7, file: !1, line: 3, type: !11)51 !13 = !DILocation(line: 0, scope: !7)52 !14 = !DILocalVariable(name: "baz", arg: 2, scope: !7, file: !1, line: 3, type: !11)53 !15 = distinct !DILexicalBlock(scope: !7, file: !1, line: 8, column: 7)54 55...56---57name: _ZNK4llvm5APInt5magicEv58alignment: 1659tracksRegLiveness: true60debugInstrRef: true61registers:62 - { id: 0, class: gr64 }63 - { id: 1, class: gr32 }64 - { id: 2, class: gr64 }65 - { id: 3, class: gr32 }66 - { id: 4, class: gr64 }67 - { id: 5, class: gr32 }68 - { id: 6, class: gr32 }69 - { id: 7, class: gr32 }70 - { id: 8, class: gr64 }71 - { id: 9, class: gr32 }72 - { id: 10, class: gr64 }73 - { id: 11, class: gr32 }74 - { id: 12, class: gr64 }75 - { id: 13, class: gr32 }76 - { id: 14, class: gr64 }77 - { id: 15, class: gr32 }78 - { id: 16, class: gr64 }79 - { id: 17, class: gr64 }80 - { id: 18, class: gr64 }81 - { id: 19, class: gr32 }82 - { id: 20, class: gr8 }83 - { id: 21, class: gr32 }84 - { id: 22, class: gr64 }85 - { id: 23, class: gr64 }86 - { id: 24, class: gr64 }87 - { id: 25, class: gr64 }88 - { id: 26, class: gr64 }89 - { id: 27, class: gr32 }90 - { id: 28, class: gr8 }91 - { id: 29, class: gr64 }92 - { id: 30, class: gr64 }93 - { id: 31, class: gr64 }94 - { id: 32, class: gr64 }95 - { id: 33, class: gr64 }96 - { id: 34, class: gr64 }97 - { id: 35, class: gr64 }98 - { id: 36, class: gr64 }99 - { id: 37, class: gr64 }100 - { id: 38, class: gr8 }101frameInfo:102 maxAlignment: 1103 adjustsStack: true104 hasCalls: true105machineFunctionInfo: {}106body: |107 bb.0:108 %15:gr32 = IMPLICIT_DEF109 %14:gr64 = IMPLICIT_DEF110 %17:gr64 = IMPLICIT_DEF111 %18:gr64 = IMPLICIT_DEF112 %19:gr32 = MOV32r0 implicit-def dead $eflags113 %22:gr64 = IMPLICIT_DEF114 %23:gr64 = IMPLICIT_DEF115 %24:gr64 = IMPLICIT_DEF116 %25:gr64 = IMPLICIT_DEF117 %26:gr64 = IMPLICIT_DEF118 %30:gr64 = IMPLICIT_DEF119 %31:gr64 = IMPLICIT_DEF120 %32:gr64 = IMPLICIT_DEF121 %33:gr64 = IMPLICIT_DEF122 %34:gr64 = IMPLICIT_DEF123 %35:gr64 = IMPLICIT_DEF124 %36:gr64 = IMPLICIT_DEF125 %37:gr64 = IMPLICIT_DEF126 %21:gr32 = IMPLICIT_DEF127 128 bb.1:129 %0:gr64 = PHI %14, %bb.0, %12, %bb.5130 %1:gr32 = PHI %15, %bb.0, %11, %bb.5131 %2:gr64 = PHI %14, %bb.0, %10, %bb.5132 %3:gr32 = PHI %15, %bb.0, %9, %bb.5133 %4:gr64 = PHI %14, %bb.0, %8, %bb.5134 %5:gr32 = PHI %15, %bb.0, %7, %bb.5, debug-location !13135 %6:gr32 = PHI %15, %bb.0, %13, %bb.5, debug-location !13136 %16:gr64 = ADD64rr %4, %4, implicit-def dead $eflags, debug-location !13137 MOV32mr %17, 1, $noreg, 0, $noreg, %5, debug-location !13 :: (store (s32) into `ptr undef`, align 8)138 MOV64mr %18, 1, $noreg, 0, $noreg, killed %16, debug-location !13 :: (store (s64) into `ptr undef`)139 %20:gr8 = COPY %19.sub_8bit140 TEST8rr %20, %20, implicit-def $eflags, debug-location !13141 JCC_1 %bb.3, 5, implicit $eflags, debug-location !13142 JMP_1 %bb.2, debug-location !13143 144 bb.2:145 146 bb.3:147 successors: %bb.4, %bb.5148 149 %7:gr32 = PHI %5, %bb.1, %21, %bb.2, debug-location !13150 MOV32mr %22, 1, $noreg, 0, $noreg, %7, debug-location !13 :: (store (s32) into `ptr undef`, align 8)151 %8:gr64 = MOV64rm %23, 1, $noreg, 0, $noreg, debug-location !13 :: (load (s64) from `ptr undef`)152 MOV32mr %24, 1, $noreg, 0, $noreg, %3, debug-location !13 :: (store (s32) into `ptr undef`, align 8)153 MOV64mi32 %25, 1, $noreg, 0, $noreg, 0, debug-location !13 :: (store (s64) into `ptr undef`)154 %28:gr8 = COPY %19.sub_8bit155 TEST8rr %28, %28, implicit-def $eflags, debug-location !13156 JCC_1 %bb.5, 5, implicit $eflags, debug-location !13157 JMP_1 %bb.4, debug-location !13158 159 bb.4:160 %29:gr64 = ADD64rr %2, %2, implicit-def dead $eflags, debug-location !13161 MOV64mr %30, 1, $noreg, 0, $noreg, killed %29, debug-location !13 :: (store (s64) into `ptr undef`)162 163 bb.5:164 %9:gr32 = MOV32rm %26, 1, $noreg, 0, $noreg, debug-location !13 :: (load (s32) from `ptr undef`, align 8)165 %10:gr64 = MOV64rm %31, 1, $noreg, 0, $noreg, debug-location !13 :: (load (s64) from `ptr undef`)166 %12:gr64 = ADD64rr %0, %0, implicit-def dead $eflags, debug-location !13167 MOV32mr %32, 1, $noreg, 0, $noreg, %1, debug-location !13 :: (store (s32) into `ptr undef`, align 8)168 MOV64mr %33, 1, $noreg, 0, $noreg, %12, debug-location !13 :: (store (s64) into `ptr undef`)169 %11:gr32 = MOV32rm %34, 1, $noreg, 0, $noreg, debug-location !13 :: (load (s32) from `ptr undef`, align 8)170 ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !13171 $rdi = COPY %35, debug-location !13172 $rsi = COPY %36, debug-location !13173 CALL64r %37, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit $rsi, implicit-def $rsp, implicit-def $ssp, implicit-def $al, debug-location !13174 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !13175 %13:gr32 = INC32r %6, implicit-def dead $eflags, debug-instr-number 1, debug-location !13176 DBG_INSTR_REF !12, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !13177 JMP_1 %bb.1, debug-location !13178...179