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1# RUN: llc %s -o - -mtriple=x86_64-unknown-unknown \2# RUN: -experimental-debug-variable-locations -run-pass=livedebugvalues\3# RUN: | FileCheck %s4#5# Test that a DBG_INSTR_REF that refers to a DBG_PHI, will be translated into a6# DBG_VALUE of the value read at that DBG_PHI. Same original code as7# phi-coalescing.mir.8#9--- |10 ; ModuleID = 'phi-coalescing.mir'11 source_filename = "test.c"12 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"13 target triple = "x86_64-unknown-linux-gnu"14 15 define dso_local i32 @foo(i64 %bar, i64 %baz) !dbg !7 {16 entry:17 call void @llvm.dbg.value(metadata i64 %bar, metadata !12, metadata !DIExpression()), !dbg !1318 call void @llvm.dbg.value(metadata i64 %baz, metadata !14, metadata !DIExpression()), !dbg !1319 call void @ext(i64 %bar), !dbg !1520 %add = add nsw i64 %bar, 12, !dbg !1621 call void @llvm.dbg.value(metadata i64 %add, metadata !12, metadata !DIExpression()), !dbg !1322 call void @ext(i64 %add), !dbg !1723 %call = call i64 @getlong(), !dbg !1824 %tobool = icmp ne i64 %call, 0, !dbg !1825 br i1 %tobool, label %if.then, label %if.end, !dbg !2026 27 if.then: ; preds = %entry28 %add1 = add nsw i64 %add, 1, !dbg !2129 call void @llvm.dbg.value(metadata i64 %add1, metadata !12, metadata !DIExpression()), !dbg !1330 br label %if.end, !dbg !2231 32 if.end: ; preds = %if.then, %entry33 %bar.addr.0 = phi i64 [ %add1, %if.then ], [ %add, %entry ], !dbg !1334 call void @llvm.dbg.value(metadata i64 %bar.addr.0, metadata !12, metadata !DIExpression()), !dbg !1335 %add2 = add nsw i64 %bar.addr.0, %baz, !dbg !2336 call void @llvm.dbg.value(metadata i64 %add2, metadata !12, metadata !DIExpression()), !dbg !1337 call void @ext(i64 %add2), !dbg !2438 %conv = trunc i64 %add2 to i32, !dbg !2539 ret i32 %conv, !dbg !2640 }41 42 ; Function Attrs: nounwind readnone speculatable willreturn43 declare void @llvm.dbg.declare(metadata, metadata, metadata)44 45 declare dso_local void @ext(i64)46 47 declare dso_local i64 @getlong()48 49 ; Function Attrs: nounwind readnone speculatable willreturn50 declare void @llvm.dbg.value(metadata, metadata, metadata)51 52 !llvm.dbg.cu = !{!0}53 !llvm.module.flags = !{!3, !4, !5}54 !llvm.ident = !{!6}55 56 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)57 !1 = !DIFile(filename: "test.c", directory: "/tmp/out.c")58 !2 = !{}59 !3 = !{i32 7, !"Dwarf Version", i32 4}60 !4 = !{i32 2, !"Debug Info Version", i32 3}61 !5 = !{i32 1, !"wchar_size", i32 4}62 !6 = !{!""}63 !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)64 !8 = !DISubroutineType(types: !9)65 !9 = !{!10, !11, !11}66 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)67 !11 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)68 !12 = !DILocalVariable(name: "bar", arg: 1, scope: !7, file: !1, line: 3, type: !11)69 !13 = !DILocation(line: 0, scope: !7)70 !14 = !DILocalVariable(name: "baz", arg: 2, scope: !7, file: !1, line: 3, type: !11)71 !15 = !DILocation(line: 4, column: 3, scope: !7)72 !16 = !DILocation(line: 5, column: 7, scope: !7)73 !17 = !DILocation(line: 6, column: 3, scope: !7)74 !18 = !DILocation(line: 8, column: 7, scope: !19)75 !19 = distinct !DILexicalBlock(scope: !7, file: !1, line: 8, column: 7)76 !20 = !DILocation(line: 8, column: 7, scope: !7)77 !21 = !DILocation(line: 9, column: 9, scope: !19)78 !22 = !DILocation(line: 9, column: 5, scope: !19)79 !23 = !DILocation(line: 11, column: 7, scope: !7)80 !24 = !DILocation(line: 12, column: 3, scope: !7)81 !25 = !DILocation(line: 13, column: 10, scope: !7)82 !26 = !DILocation(line: 13, column: 3, scope: !7)83 84...85---86name: foo87alignment: 1688tracksRegLiveness: true89debugInstrRef: true90liveins:91 - { reg: '$rdi' }92 - { reg: '$rsi' }93frameInfo:94 stackSize: 2495 offsetAdjustment: -2496 maxAlignment: 197 adjustsStack: true98 hasCalls: true99 maxCallFrameSize: 0100 cvBytesOfCalleeSavedRegisters: 16101fixedStack:102 - { id: 0, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$rbx' }103 - { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$r14' }104machineFunctionInfo: {}105body: |106 bb.0.entry:107 liveins: $rdi, $rsi, $r14, $rbx108 109 frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp110 CFI_INSTRUCTION def_cfa_offset 16111 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp112 CFI_INSTRUCTION def_cfa_offset 24113 frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp114 CFI_INSTRUCTION def_cfa_offset 32115 CFI_INSTRUCTION offset $rbx, -24116 CFI_INSTRUCTION offset $r14, -16117 $r14 = MOV64rr $rsi118 $rbx = MOV64rr $rdi119 CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, debug-location !15120 renamable $rbx = ADD64ri32 killed renamable $rbx, 12, implicit-def $eflags, debug-location !16121 $rdi = MOV64rr $rbx, debug-location !17122 CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, debug-location !17123 CALL64pcrel32 @getlong, csr_64, implicit $rsp, implicit $ssp, implicit-def $rax, debug-location !18124 CMP64ri8 killed renamable $rax, 0, implicit-def $eflags, debug-location !18125 JCC_1 %bb.2, 4, implicit $eflags, debug-location !20126 127 bb.1.if.then:128 liveins: $rbx, $r14129 130 renamable $rbx = ADD64ri32 killed renamable $rbx, 1, implicit-def $eflags, debug-location !21131 132 bb.2.if.end:133 liveins: $rbx, $r14134 135 DBG_PHI $rbx, 1136 $rax = COPY $rbx137 $rbx = MOV64ri 0138 DBG_INSTR_REF !12, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !13139 140 ; This sequence should mark the contents of rbx on block entry as being the141 ; value for the variable at this DBG_INSTR_REF. We've force it to be in142 ; $rax now, so we should see a DBG_VALUE for rax:143 ; CHECK: DBG_PHI $rbx, 1144 ; CHECK-NEXT: $rax = COPY $rbx145 ; CHECK-NEXT: $rbx = MOV64ri 0146 ; CHECK-NEXT: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0)147 ; CHECK-NEXT: DBG_VALUE_LIST {{.+}} $rax148 149 $rbx = COPY $rax150 renamable $rbx = ADD64rr killed renamable $rbx, killed renamable $r14, implicit-def $eflags, debug-location !23151 DBG_VALUE $rbx, $noreg, !12, !DIExpression(), debug-location !13152 $rdi = MOV64rr $rbx, debug-location !24153 CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, debug-location !24154 $eax = MOV32rr $ebx, implicit killed $rbx, debug-location !26155 $rsp = frame-destroy ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !26156 CFI_INSTRUCTION def_cfa_offset 24, debug-location !26157 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !26158 CFI_INSTRUCTION def_cfa_offset 16, debug-location !26159 $r14 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !26160 CFI_INSTRUCTION def_cfa_offset 8, debug-location !26161 RET64 implicit $eax, debug-location !26162 163...164