1# RUN: llc -run-pass=livedebugvalues %s -o - | FileCheck %s 2# 3# This test tests tracking variables value transferring from one register to another. 4# This example is altered additionally in order to test transferring from one float register 5# to another. The altered instructions are labeled below. 6# 7# CHECK: ![[ARG1:.*]] = !DILocalVariable(name: "arg1" 8# CHECK: ![[VAR1:.*]] = !DILocalVariable(name: "var1" 9# CHECK: DBG_VALUE $ebx, $noreg, ![[ARG1]], !DIExpression(), debug-location 10# CHECK: DBG_VALUE_LIST ![[VAR1]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $ebx, $r13d 11# CHECK: $r12d = MOV32rr killed $ebx, implicit-def $r12 12# CHECK-NEXT: DBG_VALUE_LIST !13, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $r12d, $r13d 13# CHECK-NEXT: DBG_VALUE $r12d, $noreg, ![[ARG1]], !DIExpression(), debug-location 14# CHECK: $r10d = MOV32rr killed $r13d, implicit-def $r10 15# CHECK-NEXT: DBG_VALUE_LIST !13, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $r12d, $r10d 16--- | 17 ; ModuleID = 'live-debug-values-reg-copy.ll' 18 source_filename = "live-debug-values-reg-copy.c" 19 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 20 target triple = "x86_64-unknown-linux-gnu" 21 22 define dso_local i32 @foo(i32 %arg1) local_unnamed_addr !dbg !7 { 23 entry: 24 %local1 = alloca i32, align 4 25 call void @llvm.dbg.value(metadata i32 %arg1, metadata !12, metadata !DIExpression()), !dbg !15 26 %0 = bitcast ptr %local1 to ptr, !dbg !15 27 call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %0), !dbg !15 28 call void @init(ptr nonnull %local1), !dbg !15 29 %1 = load i32, ptr %local1, align 4, !dbg !15, !tbaa !20 30 %add = add nsw i32 %1, %arg1, !dbg !15 31 %call = call i32 @coeficient(i32 %add), !dbg !15 32 %cmp = icmp sgt i32 %call, 32, !dbg !15 33 br i1 %cmp, label %if.then, label %if.else, !dbg !15 34 35 if.then: ; preds = %entry 36 %call1 = call i32 @externFunc(i32 %arg1), !dbg !15 37 %2 = load i32, ptr %local1, align 4, !dbg !15, !tbaa !20 38 %add2 = add nsw i32 %2, %call1, !dbg !15 39 br label %if.end, !dbg !15 40 41 if.else: ; preds = %entry 42 %call3 = call i32 @externFunc2(i32 %arg1), !dbg !15 43 %3 = load i32, ptr %local1, align 4, !dbg !15, !tbaa !20 44 %add4 = add nsw i32 %3, %call3, !dbg !15 45 br label %if.end 46 47 if.end: ; preds = %if.else, %if.then 48 %storemerge = phi i32 [ %add4, %if.else ], [ %add2, %if.then ] 49 %4 = bitcast ptr %local1 to ptr 50 %mul = shl nsw i32 %arg1, 2, !dbg !15 51 %add5 = add nsw i32 %storemerge, %mul, !dbg !15 52 %mul6 = mul nsw i32 %add5, %call, !dbg !15 53 call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4), !dbg !15 54 ret i32 %mul6, !dbg !15 55 } 56 57 ; Function Attrs: argmemonly nounwind 58 declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #0 59 60 declare dso_local void @init(ptr) local_unnamed_addr 61 62 declare dso_local i32 @coeficient(i32) local_unnamed_addr 63 64 declare dso_local i32 @externFunc(i32) local_unnamed_addr 65 66 declare dso_local i32 @externFunc2(i32) local_unnamed_addr 67 68 ; Function Attrs: argmemonly nounwind 69 declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #0 70 71 ; Function Attrs: nounwind readnone speculatable 72 declare void @llvm.dbg.value(metadata, metadata, metadata) #1 73 74 ; Function Attrs: nounwind 75 declare void @llvm.stackprotector(ptr, ptr) #2 76 77 attributes #0 = { argmemonly nounwind } 78 attributes #1 = { nounwind readnone speculatable } 79 attributes #2 = { nounwind } 80 81 !llvm.dbg.cu = !{!0} 82 !llvm.module.flags = !{!3, !4, !5} 83 !llvm.ident = !{!6} 84 85 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 86 !1 = !DIFile(filename: "live-debug-values-reg-copy.c", directory: "/") 87 !2 = !{} 88 !3 = !{i32 2, !"Dwarf Version", i32 4} 89 !4 = !{i32 2, !"Debug Info Version", i32 3} 90 !5 = !{i32 1, !"wchar_size", i32 4} 91 !6 = !{!"clang version 7.0.0 "} 92 !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 6, type: !8, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11) 93 !8 = !DISubroutineType(types: !9) 94 !9 = !{!10, !10} 95 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 96 !11 = !{!12, !13} 97 !12 = !DILocalVariable(name: "arg1", arg: 1, scope: !7, file: !1, line: 6, type: !10) 98 !13 = !DILocalVariable(name: "var1", arg: 1, scope: !7, file: !1, line: 6, type: !10) 99 !15 = !DILocation(line: 6, column: 13, scope: !7) 100 !20 = !{!21, !21, i64 0} 101 !21 = !{!"int", !22, i64 0} 102 !22 = !{!"omnipotent char", !23, i64 0} 103 !23 = !{!"Simple C/C++ TBAA"} 104 105... 106--- 107name: foo 108alignment: 16 109exposesReturnsTwice: false 110legalized: false 111regBankSelected: false 112selected: false 113tracksRegLiveness: true 114debugInstrRef: true 115registers: 116liveins: 117 - { reg: '$edi', virtual-reg: '' } 118 - { reg: '$r8d', virtual-reg: '' } 119frameInfo: 120 isFrameAddressTaken: false 121 isReturnAddressTaken: false 122 hasStackMap: false 123 hasPatchPoint: false 124 stackSize: 48 125 offsetAdjustment: -48 126 maxAlignment: 4 127 adjustsStack: true 128 hasCalls: true 129 stackProtector: '' 130 maxCallFrameSize: 0 131 hasOpaqueSPAdjustment: false 132 hasVAStart: false 133 hasMustTailInVarArgFunc: false 134 savePoint: '' 135 restorePoint: '' 136fixedStack: 137 - { id: 0, type: spill-slot, offset: -48, size: 8, alignment: 16, stack-id: default, 138 callee-saved-register: '$rbx', callee-saved-restored: true } 139 - { id: 1, type: spill-slot, offset: -40, size: 8, alignment: 8, stack-id: default, 140 callee-saved-register: '$r12', callee-saved-restored: true } 141 - { id: 2, type: spill-slot, offset: -32, size: 8, alignment: 16, stack-id: default, 142 callee-saved-register: '$rbp', callee-saved-restored: true } 143 - { id: 3, type: spill-slot, offset: -24, size: 8, alignment: 16, stack-id: default, 144 callee-saved-register: '$r13', callee-saved-restored: true } 145 - { id: 4, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default, 146 callee-saved-register: '$r10', callee-saved-restored: true } 147stack: 148 - { id: 0, name: local1, type: default, offset: -36, size: 4, alignment: 4, 149 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 150 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 151constants: 152body: | 153 bb.0.entry: 154 successors: %bb.1(0x40000000), %bb.2(0x40000000) 155 liveins: $edi, $rbp, $r8, $r10, $r13, $r12, $rbx 156 157 DBG_VALUE $edi, $noreg, !12, !DIExpression(), debug-location !15 158 DBG_VALUE_LIST !13, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $edi, $r8d, debug-location !15 159 frame-setup PUSH64r killed $r10, implicit-def $rsp, implicit $rsp 160 CFI_INSTRUCTION def_cfa_offset 16 161 frame-setup PUSH64r killed $r13, implicit-def $rsp, implicit $rsp 162 CFI_INSTRUCTION def_cfa_offset 24 163 frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp 164 CFI_INSTRUCTION def_cfa_offset 32 165 frame-setup PUSH64r killed $r12, implicit-def $rsp, implicit $rsp 166 CFI_INSTRUCTION def_cfa_offset 40 167 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp 168 CFI_INSTRUCTION def_cfa_offset 48 169 $rsp = frame-setup SUB64ri8 $rsp, 16, implicit-def dead $eflags 170 CFI_INSTRUCTION def_cfa_offset 56 171 CFI_INSTRUCTION offset $rbx, -48 172 CFI_INSTRUCTION offset $rbx, -40 173 CFI_INSTRUCTION offset $r12, -32 174 CFI_INSTRUCTION offset $rbp, -24 175 CFI_INSTRUCTION offset $r13, -16 176 renamable $ebx = COPY $edi, implicit-def $rbx 177 renamable $r13d = COPY $r8d, implicit-def $r13 178 DBG_VALUE $ebx, $noreg, !12, !DIExpression(), debug-location !15 179 DBG_VALUE_LIST !13, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), $ebx, $r13d, debug-location !15 180 renamable $rdi = LEA64r $rsp, 1, $noreg, 12, $noreg 181 renamable $r8 = LEA64r $rsp, 1, $noreg, 12, $noreg 182 CALL64pcrel32 @init, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, debug-location !15 183 renamable $edi = MOV32rm $rsp, 1, $noreg, 12, $noreg :: (dereferenceable load (s32) from %ir.local1, !tbaa !20) 184 renamable $edi = ADD32rr killed renamable $edi, renamable $ebx, implicit-def dead $eflags, debug-location !15 185 renamable $r8d = MOV32rm $rsp, 1, $noreg, 12, $noreg :: (dereferenceable load (s32) from %ir.local1, !tbaa !20) 186 renamable $r8d = ADD32rr killed renamable $r8d, renamable $r13d, implicit-def dead $eflags, debug-location !15 187 CALL64pcrel32 @coeficient, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit $r8d, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !15 188 renamable $ebp = COPY $eax, debug-location !15 189 CMP32ri8 $eax, 33, implicit-def $eflags, debug-location !15 190 JCC_1 %bb.2, 12, implicit killed $eflags, debug-location !15 191 JMP_1 %bb.1, debug-location !15 192 193 bb.1.if.then: 194 successors: %bb.3(0x80000000) 195 liveins: $ebp, $rbx, $r13 196 197 $edi = COPY renamable $ebx, debug-location !15 198 $r8d = COPY renamable $r13d, debug-location !15 199 CALL64pcrel32 @externFunc, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !15 200 renamable $eax = KILL $eax, implicit-def $rax, debug-location !15 201 renamable $eax = nsw ADD32rm renamable $eax, $rsp, 1, $noreg, 12, $noreg, implicit-def dead $eflags, implicit killed $rax, implicit-def $rax, debug-location !15 :: (dereferenceable load (s32) from %ir.local1, !tbaa !20) 202 JMP_1 %bb.3, debug-location !15 203 204 bb.2.if.else: 205 successors: %bb.3(0x80000000) 206 liveins: $ebp, $r13, $rbx 207 208 $edi = COPY renamable $ebx, debug-location !15 209 $r8d = COPY renamable $r13d, debug-location !15 210 CALL64pcrel32 @externFunc2, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !15 211 renamable $eax = KILL $eax, implicit-def $rax, debug-location !15 212 renamable $eax = nsw ADD32rm renamable $eax, $rsp, 1, $noreg, 12, $noreg, implicit-def dead $eflags, implicit killed $rax, implicit-def $rax, debug-location !15 :: (dereferenceable load (s32) from %ir.local1, !tbaa !20) 213 214 bb.3.if.end: 215 liveins: $ebp, $rax, $rbx, $r13, $r12, $r10 216 ; Instruction below is added in order to test moving variable's value from one register to another. 217 $r12d = MOV32rr killed $ebx, implicit-def $r12 218 $r10d = MOV32rr killed $r13d, implicit-def $r10 219 renamable $eax = nsw LEA64_32r killed renamable $rax, 4, killed renamable $rbx, 0, $noreg, debug-location !15 220 renamable $eax = nsw IMUL32rr killed renamable $eax, killed renamable $ebp, implicit-def dead $eflags, debug-location !15 221 $rsp = frame-destroy ADD64ri8 $rsp, 16, implicit-def dead $eflags, debug-location !15 222 CFI_INSTRUCTION def_cfa_offset 48, debug-location !15 223 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !15 224 CFI_INSTRUCTION def_cfa_offset 40, debug-location !15 225 $r12 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !15 226 CFI_INSTRUCTION def_cfa_offset 32, debug-location !15 227 $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !15 228 CFI_INSTRUCTION def_cfa_offset 24, debug-location !15 229 $r13 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !15 230 CFI_INSTRUCTION def_cfa_offset 16, debug-location !15 231 $r13 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !15 232 CFI_INSTRUCTION def_cfa_offset 8, debug-location !15 233 RET 0, $eax, debug-location !15 234 235... 236