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 %s 5# 6# This test is for stack spill folding -- the INC32r near the end of the MIR 7# below show be morphed into an INC32m by the register allocator, making it 8# load-operate-store to %stack.0. We should track this fact in the substitution 9# 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, where 14# register allocation begins, however for some reason the INC32r gets 15# transformed into a different instruction if we do that. Start at the last 16# 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 void 32 } 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: _ZNK4llvm5APInt5magicEv 58alignment: 16 59tracksRegLiveness: true 60debugInstrRef: true 61registers: 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: 1 103 adjustsStack: true 104 hasCalls: true 105machineFunctionInfo: {} 106body: | 107 bb.0: 108 %15:gr32 = IMPLICIT_DEF 109 %14:gr64 = IMPLICIT_DEF 110 %17:gr64 = IMPLICIT_DEF 111 %18:gr64 = IMPLICIT_DEF 112 %19:gr32 = MOV32r0 implicit-def dead $eflags 113 %22:gr64 = IMPLICIT_DEF 114 %23:gr64 = IMPLICIT_DEF 115 %24:gr64 = IMPLICIT_DEF 116 %25:gr64 = IMPLICIT_DEF 117 %26:gr64 = IMPLICIT_DEF 118 %30:gr64 = IMPLICIT_DEF 119 %31:gr64 = IMPLICIT_DEF 120 %32:gr64 = IMPLICIT_DEF 121 %33:gr64 = IMPLICIT_DEF 122 %34:gr64 = IMPLICIT_DEF 123 %35:gr64 = IMPLICIT_DEF 124 %36:gr64 = IMPLICIT_DEF 125 %37:gr64 = IMPLICIT_DEF 126 %21:gr32 = IMPLICIT_DEF 127 128 bb.1: 129 %0:gr64 = PHI %14, %bb.0, %12, %bb.5 130 %1:gr32 = PHI %15, %bb.0, %11, %bb.5 131 %2:gr64 = PHI %14, %bb.0, %10, %bb.5 132 %3:gr32 = PHI %15, %bb.0, %9, %bb.5 133 %4:gr64 = PHI %14, %bb.0, %8, %bb.5 134 %5:gr32 = PHI %15, %bb.0, %7, %bb.5, debug-location !13 135 %6:gr32 = PHI %15, %bb.0, %13, %bb.5, debug-location !13 136 %16:gr64 = ADD64rr %4, %4, implicit-def dead $eflags, debug-location !13 137 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_8bit 140 TEST8rr %20, %20, implicit-def $eflags, debug-location !13 141 JCC_1 %bb.3, 5, implicit $eflags, debug-location !13 142 JMP_1 %bb.2, debug-location !13 143 144 bb.2: 145 146 bb.3: 147 successors: %bb.4, %bb.5 148 149 %7:gr32 = PHI %5, %bb.1, %21, %bb.2, debug-location !13 150 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_8bit 155 TEST8rr %28, %28, implicit-def $eflags, debug-location !13 156 JCC_1 %bb.5, 5, implicit $eflags, debug-location !13 157 JMP_1 %bb.4, debug-location !13 158 159 bb.4: 160 %29:gr64 = ADD64rr %2, %2, implicit-def dead $eflags, debug-location !13 161 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 !13 167 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 !13 171 $rdi = COPY %35, debug-location !13 172 $rsi = COPY %36, debug-location !13 173 CALL64r %37, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit $rsi, implicit-def $rsp, implicit-def $ssp, implicit-def $al, debug-location !13 174 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !13 175 %13:gr32 = INC32r %6, implicit-def dead $eflags, debug-instr-number 1, debug-location !13 176 DBG_INSTR_REF !12, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !13 177 JMP_1 %bb.1, debug-location !13 178... 179