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 debug-use $s0_64, debug-use $noreg, ![[ARG2]], !DIExpression(), debug-location 10 # CHECK: $s1_64 = OR64 killed $s0_64, $zero_64, debug-location 11 # CHECK-NEXT: DBG_VALUE debug-use $s1_64, debug-use $noreg, ![[ARG2]], !DIExpression(), debug-location 12 # CHECK: DBG_VALUE debug-use $f24, debug-use $noreg, ![[ARG1]], !DIExpression(), debug-location 13 # CHECK: $f26 = FMOV_S killed $f24, debug-location 14 # CHECK-NEXT: DBG_VALUE debug-use $f26, debug-use $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(i8*, i8**) #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 --- 93 name: foo 94 alignment: 3 95 exposesReturnsTwice: false 96 legalized: false 97 regBankSelected: false 98 selected: false 99 tracksRegLiveness: false 100 registers: 101 liveins: 102 - { reg: '$f12', virtual-reg: '' } 103 - { reg: '$a1_64', virtual-reg: '' } 104 frameInfo: 105 isFrameAddressTaken: false 106 isReturnAddressTaken: false 107 hasStackMap: false 108 hasPatchPoint: false 109 stackSize: 32 110 offsetAdjustment: 0 111 maxAlignment: 8 112 adjustsStack: true 113 hasCalls: true 114 stackProtector: '' 115 maxCallFrameSize: 0 116 hasOpaqueSPAdjustment: false 117 hasVAStart: false 118 hasMustTailInVarArgFunc: false 119 savePoint: '' 120 restorePoint: '' 121 fixedStack: 122 stack: 123 - { id: 0, name: '', type: spill-slot, offset: -8, size: 8, alignment: 8, 124 stack-id: 0, callee-saved-register: '$d25_64', callee-saved-restored: true, 125 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 126 - { id: 1, name: '', type: spill-slot, offset: -16, size: 8, alignment: 8, 127 stack-id: 0, callee-saved-register: '$d24_64', callee-saved-restored: true, 128 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 129 - { id: 2, name: '', type: spill-slot, offset: -24, size: 8, alignment: 8, 130 stack-id: 0, callee-saved-register: '$ra_64', callee-saved-restored: true, 131 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 132 - { id: 3, name: '', type: spill-slot, offset: -32, size: 8, alignment: 8, 133 stack-id: 0, callee-saved-register: '$s0_64', callee-saved-restored: true, 134 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 135 constants: 136 - id: 0 137 value: 'double 1.012310e+01' 138 alignment: 8 139 isTargetSpecific: false 140 - id: 1 141 value: 'float 1.000000e+01' 142 alignment: 4 143 isTargetSpecific: false 144 - id: 2 145 value: float 0x3FF522D0E0000000 146 alignment: 4 147 isTargetSpecific: false 148 body: | 149 bb.0.entry: 150 successors: %bb.1(0x40000000), %bb.2(0x40000000) 151 152 $sp_64 = DADDiu $sp_64, -32 153 CFI_INSTRUCTION def_cfa_offset 32 154 SDC164 killed $d25_64, $sp_64, 24 :: (store 8 into %stack.0) 155 SDC164 killed $d24_64, $sp_64, 16 :: (store 8 into %stack.1) 156 SD killed $ra_64, $sp_64, 8 :: (store 8 into %stack.2) 157 SD killed $s0_64, $sp_64, 0 :: (store 8 into %stack.3) 158 CFI_INSTRUCTION offset $d26_64, -8 159 CFI_INSTRUCTION offset $d25_64, -4 160 CFI_INSTRUCTION offset $d25_64, -16 161 CFI_INSTRUCTION offset $d24_64, -12 162 CFI_INSTRUCTION offset $ra_64, -24 163 CFI_INSTRUCTION offset $s0_64, -32 164 DBG_VALUE debug-use $f12, debug-use $noreg, !14, !DIExpression(), debug-location !19 165 DBG_VALUE debug-use $a1_64, debug-use $noreg, !15, !DIExpression(), debug-location !19 166 DBG_VALUE debug-use $s0, debug-use $noreg, !15, !DIExpression(), debug-location !19 167 DBG_VALUE debug-use $s0_64, debug-use $noreg, !15, !DIExpression(), debug-location !19 168 DBG_VALUE debug-use $f12, debug-use $noreg, !14, !DIExpression(), debug-location !19 169 renamable $d0_64 = CVT_D64_S renamable $f12, debug-location !19 170 renamable $at_64 = LUi64 target-flags(mips-highest) %const.0 171 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-higher) %const.0 172 renamable $at_64 = DSLL killed renamable $at_64, 16 173 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-abs-hi) %const.0 174 renamable $at_64 = DSLL killed renamable $at_64, 16 175 renamable $d1_64 = LDC164 killed renamable $at_64, target-flags(mips-abs-lo) %const.0, debug-location !19 :: (load 8 from constant-pool) 176 FCMP_D64 killed renamable $d0_64, killed renamable $d1_64, 7, implicit-def $fcc0, debug-location !19 177 BC1T killed $fcc0, %bb.2, implicit-def $at, debug-location !19 { 178 $s0_64 = OR64 $a1_64, $zero_64 179 } 180 181 bb.1.if.then: 182 successors: %bb.3(0x80000000) 183 184 JAL @externFunc, csr_n64, implicit-def dead $ra, implicit $f12, implicit-def $sp, implicit-def dead $f0, debug-location !19 { 185 NOP debug-location !19 186 } 187 JAL @externFunc3, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit-def $sp, implicit-def $v0, debug-location !19 { 188 renamable $a0_64 = SLL64_32 renamable $s0, implicit $s0_64, debug-location !19 189 } 190 $f0 = MTC1 killed $v0, debug-location !19 191 $f0 = CVT_S_W killed $f0, debug-location !19 192 ; This instruction is inserted additionally in order to test moving from one register to another 193 $s1_64 = OR64 killed $s0_64, $zero_64, debug-location !19 194 renamable $at_64 = LUi64 target-flags(mips-highest) %const.2 195 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-higher) %const.2 196 renamable $at_64 = DSLL killed renamable $at_64, 16 197 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-abs-hi) %const.2 198 renamable $at_64 = DSLL killed renamable $at_64, 16 199 renamable $f1 = LWC1 killed renamable $at_64, target-flags(mips-abs-lo) %const.2, debug-location !19 :: (load 4 from constant-pool) 200 J %bb.3, implicit-def dead $at, debug-location !19 { 201 renamable $f0 = FADD_S killed renamable $f0, killed renamable $f1, debug-location !19 202 } 203 204 bb.2.if.else: 205 successors: %bb.3(0x80000000) 206 207 renamable $at_64 = LUi64 target-flags(mips-highest) %const.1 208 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-higher) %const.1 209 renamable $at_64 = DSLL killed renamable $at_64, 16 210 renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-abs-hi) %const.1 211 renamable $at_64 = DSLL killed renamable $at_64, 16 212 renamable $f0 = LWC1 killed renamable $at_64, target-flags(mips-abs-lo) %const.1, debug-location !19 :: (load 4 from constant-pool) 213 renamable $f24 = FADD_S killed renamable $f12, killed renamable $f0, debug-location !19 214 DBG_VALUE debug-use $f24, debug-use $noreg, !14, !DIExpression(), debug-location !19 215 JAL @externFunc2, csr_n64, implicit-def dead $ra, implicit $f12, implicit-def $sp, implicit-def $f0, debug-location !19 { 216 $f12 = FMOV_S $f24, debug-location !19 217 } 218 $f25 = FMOV_S $f0, debug-location !19 219 JAL @externFunc4, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit-def $sp, implicit-def $v0, debug-location !19 { 220 renamable $a0_64 = SLL64_32 renamable $s0, implicit killed $s0_64, debug-location !19 221 } 222 $s0 = OR $v0, $zero, debug-location !19 223 JAL @externFunc, csr_n64, implicit-def dead $ra, implicit $f12, implicit-def $sp, implicit-def dead $f0, debug-location !19 { 224 $f12 = FMOV_S $f24, debug-location !19 225 } 226 $f0 = MTC1 killed $s0, debug-location !19 227 $f0 = CVT_S_W killed $f0, debug-location !19 228 renamable $f0 = FADD_S renamable $f25, killed renamable $f0, debug-location !19 229 ; This instruction is inserted additionally in order to test moving variable's value from one float register to another. 230 $f26 = FMOV_S killed $f24, debug-location !19 231 232 bb.3.if.end: 233 $s0_64 = LD $sp_64, 0, debug-location !19 :: (load 8 from %stack.3) 234 $ra_64 = LD $sp_64, 8, debug-location !19 :: (load 8 from %stack.2) 235 $d24_64 = LDC164 $sp_64, 16, debug-location !19 :: (load 8 from %stack.1) 236 $d25_64 = LDC164 $sp_64, 24, debug-location !19 :: (load 8 from %stack.0) 237 PseudoReturn64 undef $ra_64, implicit $f0, debug-location !19 { 238 $sp_64 = DADDiu $sp_64, 32 239 } 240 241 ... 242
