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: ![[ARG2:.*]] = !DILocalVariable(name: "arg2" 9# CHECK: DBG_VALUE $s0_64, $noreg, ![[ARG2]], !DIExpression(), debug-location 10# CHECK: $s1_64 = OR64 killed $s0_64, $zero_64, debug-location 11# CHECK-NEXT: DBG_VALUE $s1_64, $noreg, ![[ARG2]], !DIExpression(), debug-location 12# CHECK: DBG_VALUE $f24, $noreg, ![[ARG1]], !DIExpression(), debug-location 13# CHECK: $f26 = FMOV_S killed $f24, debug-location 14# CHECK-NEXT: DBG_VALUE $f26, $noreg, ![[ARG1]], !DIExpression(), debug-location 15 16--- | 17 ; ModuleID = 'live-debug-values-reg-copy.ll' 18 source_filename = "live-debug-values-reg-copy.c" 19 target datalayout = "E-m:e-i8:8:32-i16:16:32-i64:64-n32:64-S128" 20 target triple = "mips64-octeon-linux" 21 22 define float @foo(float %arg1, i32 signext %arg2) local_unnamed_addr !dbg !8 { 23 entry: 24 call void @llvm.dbg.value(metadata float %arg1, metadata !14, metadata !DIExpression()), !dbg !19 25 call void @llvm.dbg.value(metadata i32 %arg2, metadata !15, metadata !DIExpression()), !dbg !19 26 %conv = fpext float %arg1 to double, !dbg !19 27 %cmp = fcmp ogt double %conv, 1.012310e+01, !dbg !19 28 br i1 %cmp, label %if.then, label %if.else, !dbg !19 29 30 if.then: ; preds = %entry 31 %call = tail call float @externFunc(float %arg1), !dbg !19 32 %call5 = tail call i32 @externFunc3(i32 signext %arg2), !dbg !19 33 %conv6 = sitofp i32 %call5 to float, !dbg !19 34 %add7 = fadd float %conv6, 0x3FF522D0E0000000, !dbg !19 35 br label %if.end, !dbg !19 36 37 if.else: ; preds = %entry 38 %add8 = fadd float %arg1, 1.000000e+01, !dbg !19 39 call void @llvm.dbg.value(metadata float %add8, metadata !14, metadata !DIExpression()), !dbg !19 40 %call9 = tail call float @externFunc2(float %add8), !dbg !19 41 %call10 = tail call i32 @externFunc4(i32 signext %arg2), !dbg !19 42 %conv11 = sitofp i32 %call10 to float, !dbg !19 43 %add12 = fadd float %call9, %conv11, !dbg !19 44 %call14 = tail call float @externFunc(float %add8), !dbg !19 45 br label %if.end 46 47 if.end: ; preds = %if.else, %if.then 48 %local.0 = phi float [ %add7, %if.then ], [ %add12, %if.else ] 49 ret float %local.0, !dbg !19 50 } 51 52 declare float @externFunc(float) local_unnamed_addr 53 54 declare i32 @externFunc3(i32 signext) local_unnamed_addr 55 56 declare float @externFunc2(float) local_unnamed_addr 57 58 declare i32 @externFunc4(i32 signext) local_unnamed_addr 59 60 ; Function Attrs: nounwind readnone speculatable 61 declare void @llvm.dbg.value(metadata, metadata, metadata) #0 62 63 ; Function Attrs: nounwind 64 declare void @llvm.stackprotector(ptr, ptr) #1 65 66 attributes #0 = { nounwind readnone speculatable } 67 attributes #1 = { nounwind } 68 69 !llvm.dbg.cu = !{!0} 70 !llvm.module.flags = !{!3, !4, !5, !6} 71 !llvm.ident = !{!7} 72 73 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 7.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 74 !1 = !DIFile(filename: "live-debug-values-reg-copy.c", directory: "/") 75 !2 = !{} 76 !3 = !{i32 2, !"Dwarf Version", i32 4} 77 !4 = !{i32 2, !"Debug Info Version", i32 3} 78 !5 = !{i32 1, !"wchar_size", i32 4} 79 !6 = !{i32 7, !"PIC Level", i32 2} 80 !7 = !{!"clang version 7.0.0 "} 81 !8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 6, type: !9, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !13) 82 !9 = !DISubroutineType(types: !10) 83 !10 = !{!11, !11, !12} 84 !11 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float) 85 !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 86 !13 = !{!14, !15} 87 !14 = !DILocalVariable(name: "arg1", arg: 1, scope: !8, file: !1, line: 6, type: !11) 88 !15 = !DILocalVariable(name: "arg2", arg: 2, scope: !8, file: !1, line: 6, type: !12) 89 !19 = !DILocation(line: 6, column: 17, scope: !8) 90 91... 92--- 93name: foo 94alignment: 8 95exposesReturnsTwice: false 96legalized: false 97regBankSelected: false 98selected: false 99tracksRegLiveness: false 100registers: 101liveins: 102 - { reg: '$f12', virtual-reg: '' } 103 - { reg: '$a1_64', virtual-reg: '' } 104frameInfo: 105 isFrameAddressTaken: false 106 isReturnAddressTaken: false 107 hasStackMap: false 108 hasPatchPoint: false 109 stackSize: 48 110 offsetAdjustment: 0 111 maxAlignment: 8 112 adjustsStack: true 113 hasCalls: true 114 stackProtector: '' 115 maxCallFrameSize: 0 116 cvBytesOfCalleeSavedRegisters: 0 117 hasOpaqueSPAdjustment: false 118 hasVAStart: false 119 hasMustTailInVarArgFunc: false 120 localFrameSize: 0 121 savePoint: '' 122 restorePoint: '' 123fixedStack: [] 124stack: 125 - { id: 0, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8, 126 stack-id: default, callee-saved-register: '$d26_64', callee-saved-restored: true, 127 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 128 - { id: 1, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8, 129 stack-id: default, callee-saved-register: '$d25_64', callee-saved-restored: true, 130 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 131 - { id: 2, name: '', type: spill-slot, offset: -24, size: 8, alignment: 8, 132 stack-id: default, callee-saved-register: '$d24_64', callee-saved-restored: true, 133 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 134 - { id: 3, name: '', type: spill-slot, offset: -32, size: 8, alignment: 8, 135 stack-id: default, callee-saved-register: '$ra_64', callee-saved-restored: true, 136 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 137 - { id: 4, name: '', type: spill-slot, offset: -40, size: 8, alignment: 8, 138 stack-id: default, callee-saved-register: '$s1_64', callee-saved-restored: true, 139 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 140 - { id: 5, name: '', type: spill-slot, offset: -48, size: 8, alignment: 8, 141 stack-id: default, callee-saved-register: '$s0_64', callee-saved-restored: true, 142 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 143callSites: [] 144constants: 145 - id: 0 146 value: 'double 1.012310e+01' 147 alignment: 8 148 isTargetSpecific: false 149 - id: 1 150 value: 'float 1.000000e+01' 151 alignment: 4 152 isTargetSpecific: false 153 - id: 2 154 value: float 0x3FF522D0E0000000 155 alignment: 4 156 isTargetSpecific: false 157body: | 158 bb.0.entry: 159 successors: %bb.1(0x40000000), %bb.2(0x40000000) 160 liveins: $f12, $a1_64, $s1_64, $f26, $d26_64, $d25_64, $d24_64, $ra_64, $s1_64, $s0_64 161 162 DBG_VALUE $f12, $noreg, !14, !DIExpression(), debug-location !19 163 DBG_VALUE $a1_64, $noreg, !15, !DIExpression(), debug-location !19 164 $sp_64 = DADDiu $sp_64, -48 165 CFI_INSTRUCTION def_cfa_offset 48 166 SDC164 killed $d26_64, $sp_64, 40 :: (store (s64) into %stack.0) 167 SDC164 killed $d25_64, $sp_64, 32 :: (store (s64) into %stack.1) 168 SDC164 killed $d24_64, $sp_64, 24 :: (store (s64) into %stack.2) 169 SD killed $ra_64, $sp_64, 16 :: (store (s64) into %stack.3) 170 SD killed $s1_64, $sp_64, 8 :: (store (s64) into %stack.4) 171 SD killed $s0_64, $sp_64, 0 :: (store (s64) into %stack.5) 172 CFI_INSTRUCTION offset $d27_64, -8 173 CFI_INSTRUCTION offset $d26_64, -4 174 CFI_INSTRUCTION offset $d26_64, -16 175 CFI_INSTRUCTION offset $d25_64, -12 176 CFI_INSTRUCTION offset $d25_64, -24 177 CFI_INSTRUCTION offset $d24_64, -20 178 CFI_INSTRUCTION offset $ra_64, -32 179 CFI_INSTRUCTION offset $s1_64, -40 180 CFI_INSTRUCTION offset $s0_64, -48 181 renamable $s0_64 = COPY $a1_64 182 DBG_VALUE $s0, $noreg, !15, !DIExpression(), debug-location !19 183 DBG_VALUE $s0_64, $noreg, !15, !DIExpression(), debug-location !19 184 DBG_VALUE $f12, $noreg, !14, !DIExpression(), debug-location !19 185 renamable $d0_64 = CVT_D64_S renamable $f12, debug-location !19 186 renamable $at_64 = LUi64 target-flags(mips-highest) %const.0 187 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-higher) %const.0 188 renamable $at_64 = DSLL killed renamable $at_64, 16 189 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-abs-hi) %const.0 190 renamable $at_64 = DSLL killed renamable $at_64, 16 191 renamable $d1_64 = LDC164 killed renamable $at_64, target-flags(mips-abs-lo) %const.0 :: (load (s64) from constant-pool) 192 FCMP_D64 killed renamable $d0_64, killed renamable $d1_64, 7, implicit-def $fcc0, debug-location !19 193 BC1T killed $fcc0, %bb.2, implicit-def dead $at, debug-location !19 194 J %bb.1, implicit-def dead $at, debug-location !19 195 196 bb.1.if.then: 197 successors: %bb.3(0x80000000) 198 liveins: $f12, $s0_64 199 200 JAL @externFunc, csr_n64, implicit-def dead $ra, implicit $f12, implicit-def $sp, implicit-def dead $f0, debug-location !19 201 renamable $a0_64 = SLL64_32 renamable $s0, implicit $s0_64, debug-location !19 202 JAL @externFunc3, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit-def $sp, implicit-def $v0, debug-location !19 203 renamable $f0 = PseudoCVT_S_W killed renamable $v0, debug-location !19 204 ; This instruction is inserted additionally in order to test moving from one register to another 205 $s1_64 = OR64 killed $s0_64, $zero_64, debug-location !19 206 renamable $at_64 = LUi64 target-flags(mips-highest) %const.2 207 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-higher) %const.2 208 renamable $at_64 = DSLL killed renamable $at_64, 16 209 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-abs-hi) %const.2 210 renamable $at_64 = DSLL killed renamable $at_64, 16 211 renamable $f1 = LWC1 killed renamable $at_64, target-flags(mips-abs-lo) %const.2 :: (load (s32) from constant-pool) 212 renamable $f0 = FADD_S killed renamable $f0, killed renamable $f1, debug-location !19 213 J %bb.3, implicit-def dead $at, debug-location !19 214 215 bb.2.if.else: 216 successors: %bb.3(0x80000000) 217 liveins: $f12, $s0_64 218 219 renamable $at_64 = LUi64 target-flags(mips-highest) %const.1 220 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-higher) %const.1 221 renamable $at_64 = DSLL killed renamable $at_64, 16 222 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-abs-hi) %const.1 223 renamable $at_64 = DSLL killed renamable $at_64, 16 224 renamable $f0 = LWC1 killed renamable $at_64, target-flags(mips-abs-lo) %const.1 :: (load (s32) from constant-pool) 225 renamable $f24 = FADD_S killed renamable $f12, killed renamable $f0, debug-location !19 226 DBG_VALUE $f24, $noreg, !14, !DIExpression(), debug-location !19 227 $f12 = COPY renamable $f24, debug-location !19 228 JAL @externFunc2, csr_n64, implicit-def dead $ra, implicit $f12, implicit-def $sp, implicit-def $f0, debug-location !19 229 renamable $f25 = COPY $f0, debug-location !19 230 renamable $a0_64 = SLL64_32 renamable $s0, implicit killed $s0_64, debug-location !19 231 JAL @externFunc4, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit-def $sp, implicit-def $v0, debug-location !19 232 renamable $s0 = COPY $v0, debug-location !19 233 $f12 = COPY renamable $f24, debug-location !19 234 JAL @externFunc, csr_n64, implicit-def dead $ra, implicit $f12, implicit-def $sp, implicit-def dead $f0, debug-location !19 235 renamable $f0 = PseudoCVT_S_W killed renamable $s0, debug-location !19 236 renamable $f0 = FADD_S killed renamable $f25, killed renamable $f0, debug-location !19 237 ; This instruction is inserted additionally in order to test moving variable's value from one float register to another. 238 $f26 = FMOV_S killed $f24, debug-location !19 239 240 bb.3.if.end: 241 liveins: $f0 242 243 $s0_64 = LD $sp_64, 0, debug-location !19 :: (load (s64) from %stack.5) 244 $s1_64 = LD $sp_64, 8, debug-location !19 :: (load (s64) from %stack.4) 245 $ra_64 = LD $sp_64, 16, debug-location !19 :: (load (s64) from %stack.3) 246 $d24_64 = LDC164 $sp_64, 24, debug-location !19 :: (load (s64) from %stack.2) 247 $d25_64 = LDC164 $sp_64, 32, debug-location !19 :: (load (s64) from %stack.1) 248 $d26_64 = LDC164 $sp_64, 40, debug-location !19 :: (load (s64) from %stack.0) 249 $sp_64 = DADDiu $sp_64, 48 250 RetRA implicit $f0, debug-location !19 251 252... 253