# RUN: llc -run-pass=livedebugvalues -march=x86-64 -o - %s | FileCheck %s # Test the extension of debug ranges from 3 predecessors. # Generated from the source file LiveDebugValues-3preds.c: # #include # int add(int x, int y, int z, int a) { # int i; # for (i = 0; i < x * y; i++) { # if (i < x) { # a = a * x; # break; # } # if (i < y) { # a = a * y; # break; # } # if (i < z) { # a = a * z; # break; # } # } # return a; # } # with clang -g -O1 -c -emit-llvm LiveDebugValues-3preds.c -S -o live-debug-values-3preds.ll # then llc -stop-after stackmap-liveness live-debug-values-3preds.ll -o /dev/null > live-debug-values-3preds.mir # DBG_VALUE for variables "x", "y" and "z" are extended into BB#9 from its # predecessors BB#0, BB#2 and BB#8. # CHECK: bb.9.for.end: # CHECK-DAG: DBG_VALUE debug-use %edi, debug-use _, !11, !16, debug-location !17 # CHECK-DAG: DBG_VALUE debug-use %edx, debug-use _, !13, !16, debug-location !20 # CHECK-DAG: DBG_VALUE debug-use %esi, debug-use _, !12, !16, debug-location !18 # CHECK: RET --- | ; ModuleID = 'live-debug-values-3preds.ll' target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" ; Function Attrs: norecurse nounwind readnone uwtable define i32 @add(i32 %x, i32 %y, i32 %z, i32 %a) #0 !dbg !4 { entry: tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !9, metadata !17), !dbg !18 tail call void @llvm.dbg.value(metadata i32 %y, i64 0, metadata !10, metadata !17), !dbg !19 tail call void @llvm.dbg.value(metadata i32 %z, i64 0, metadata !11, metadata !17), !dbg !21 tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !12, metadata !17), !dbg !23 tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !13, metadata !17), !dbg !25 %mul = mul nsw i32 %y, %x, !dbg !26 %cmp.24 = icmp sgt i32 %mul, 0, !dbg !30 br i1 %cmp.24, label %for.body.preheader, label %for.end, !dbg !31 for.body.preheader: ; preds = %entry br label %for.body, !dbg !32 for.cond: ; preds = %if.end.6 %cmp = icmp slt i32 %inc, %mul, !dbg !30 br i1 %cmp, label %for.body, label %for.end, !dbg !31 for.body: ; preds = %for.cond, %for.body.preheader %i.025 = phi i32 [ %inc, %for.cond ], [ 0, %for.body.preheader ] %0 = icmp sgt i32 %x, 0 br i1 %0, label %if.then, label %if.end, !dbg !35 if.then: ; preds = %for.body %mul2 = mul nsw i32 %a, %x, !dbg !36 tail call void @llvm.dbg.value(metadata i32 %mul2, i64 0, metadata !12, metadata !17), !dbg !23 br label %for.end, !dbg !38 if.end: ; preds = %for.body %1 = icmp sgt i32 %y, 0 br i1 %1, label %if.then.4, label %if.end.6, !dbg !39 if.then.4: ; preds = %if.end %mul5 = mul nsw i32 %a, %y, !dbg !40 tail call void @llvm.dbg.value(metadata i32 %mul5, i64 0, metadata !12, metadata !17), !dbg !23 br label %for.end, !dbg !43 if.end.6: ; preds = %if.end %2 = icmp sgt i32 %z, 0 %inc = add nuw nsw i32 %i.025, 1, !dbg !44 tail call void @llvm.dbg.value(metadata i32 %inc, i64 0, metadata !13, metadata !17), !dbg !25 br i1 %2, label %if.then.8, label %for.cond, !dbg !45 if.then.8: ; preds = %if.end.6 %mul9 = mul nsw i32 %a, %z, !dbg !46 tail call void @llvm.dbg.value(metadata i32 %mul9, i64 0, metadata !12, metadata !17), !dbg !23 br label %for.end, !dbg !49 for.end: ; preds = %for.cond, %if.then.8, %if.then.4, %if.then, %entry %a.addr.0 = phi i32 [ %mul2, %if.then ], [ %mul5, %if.then.4 ], [ %mul9, %if.then.8 ], [ %a, %entry ], [ %a, %for.cond ] ret i32 %a.addr.0, !dbg !50 } ; Function Attrs: nounwind readnone declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 attributes #0 = { norecurse nounwind readnone uwtable } attributes #1 = { nounwind readnone } !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!14, !15} !llvm.ident = !{!16} !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) !1 = !DIFile(filename: "LiveDebugValues-3preds.c", directory: "/home/vt/julia/test/tvvikram") !2 = !{} !4 = distinct !DISubprogram(name: "add", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !8) !5 = !DISubroutineType(types: !6) !6 = !{!7, !7, !7, !7, !7} !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) !8 = !{!9, !10, !11, !12, !13} !9 = !DILocalVariable(name: "x", arg: 1, scope: !4, file: !1, line: 1, type: !7) !10 = !DILocalVariable(name: "y", arg: 2, scope: !4, file: !1, line: 1, type: !7) !11 = !DILocalVariable(name: "z", arg: 3, scope: !4, file: !1, line: 1, type: !7) !12 = !DILocalVariable(name: "a", arg: 4, scope: !4, file: !1, line: 1, type: !7) !13 = !DILocalVariable(name: "i", scope: !4, file: !1, line: 2, type: !7) !14 = !{i32 2, !"Dwarf Version", i32 4} !15 = !{i32 2, !"Debug Info Version", i32 3} !16 = !{!"clang version 3.8.0 (trunk 253049) "} !17 = !DIExpression() !18 = !DILocation(line: 1, column: 13, scope: !4) !19 = !DILocation(line: 1, column: 20, scope: !20) !20 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1) !21 = !DILocation(line: 1, column: 27, scope: !22) !22 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 2) !23 = !DILocation(line: 1, column: 34, scope: !24) !24 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 3) !25 = !DILocation(line: 2, column: 7, scope: !20) !26 = !DILocation(line: 3, column: 21, scope: !27) !27 = !DILexicalBlockFile(scope: !28, file: !1, discriminator: 1) !28 = distinct !DILexicalBlock(scope: !29, file: !1, line: 3, column: 3) !29 = distinct !DILexicalBlock(scope: !4, file: !1, line: 3, column: 3) !30 = !DILocation(line: 3, column: 17, scope: !27) !31 = !DILocation(line: 3, column: 3, scope: !27) !32 = !DILocation(line: 4, column: 11, scope: !33) !33 = distinct !DILexicalBlock(scope: !34, file: !1, line: 4, column: 9) !34 = distinct !DILexicalBlock(scope: !28, file: !1, line: 3, column: 31) !35 = !DILocation(line: 4, column: 9, scope: !34) !36 = !DILocation(line: 5, column: 13, scope: !37) !37 = distinct !DILexicalBlock(scope: !33, file: !1, line: 4, column: 16) !38 = !DILocation(line: 6, column: 7, scope: !37) !39 = !DILocation(line: 8, column: 9, scope: !34) !40 = !DILocation(line: 9, column: 13, scope: !41) !41 = distinct !DILexicalBlock(scope: !42, file: !1, line: 8, column: 16) !42 = distinct !DILexicalBlock(scope: !34, file: !1, line: 8, column: 9) !43 = !DILocation(line: 10, column: 7, scope: !41) !44 = !DILocation(line: 3, column: 27, scope: !28) !45 = !DILocation(line: 12, column: 9, scope: !34) !46 = !DILocation(line: 13, column: 13, scope: !47) !47 = distinct !DILexicalBlock(scope: !48, file: !1, line: 12, column: 16) !48 = distinct !DILexicalBlock(scope: !34, file: !1, line: 12, column: 9) !49 = !DILocation(line: 14, column: 7, scope: !47) !50 = !DILocation(line: 17, column: 3, scope: !4) ... --- name: add alignment: 4 exposesReturnsTwice: false hasInlineAsm: false allVRegsAllocated: true isSSA: false tracksRegLiveness: true tracksSubRegLiveness: false liveins: - { reg: '%edi' } - { reg: '%esi' } - { reg: '%edx' } - { reg: '%ecx' } frameInfo: isFrameAddressTaken: false isReturnAddressTaken: false hasStackMap: false hasPatchPoint: false stackSize: 0 offsetAdjustment: 0 maxAlignment: 0 adjustsStack: false hasCalls: false maxCallFrameSize: 0 hasOpaqueSPAdjustment: false hasVAStart: false hasMustTailInVarArgFunc: false body: | bb.0.entry: successors: %bb.1.for.body.preheader(20), %bb.9.for.end(12) liveins: %ecx, %edi, %edx, %esi DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 DBG_VALUE 0, 0, !13, !17, debug-location !25 %r8d = MOV32rr %esi, debug-location !26 %r8d = IMUL32rr killed %r8d, %edi, implicit-def dead %eflags, debug-location !26 TEST32rr %r8d, %r8d, implicit-def %eflags, debug-location !31 JLE_1 %bb.9.for.end, implicit %eflags bb.1.for.body.preheader: successors: %bb.3.for.body(0) liveins: %ecx, %edi, %edx, %esi, %r8d DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 DBG_VALUE 0, 0, !13, !17, debug-location !25 %eax = XOR32rr undef %eax, undef %eax, implicit-def dead %eflags bb.3.for.body (align 4): successors: %bb.4.if.then(4), %bb.5.if.end(124) liveins: %eax, %ecx, %edi, %edx, %esi, %r8d DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 DBG_VALUE 0, 0, !13, !17, debug-location !25 TEST32rr %edi, %edi, implicit-def %eflags, debug-location !35 JG_1 %bb.4.if.then, implicit %eflags bb.5.if.end: successors: %bb.6.if.then.4(4), %bb.7.if.end.6(124) liveins: %eax, %ecx, %edi, %edx, %esi, %r8d DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 DBG_VALUE 0, 0, !13, !17, debug-location !25 TEST32rr %esi, %esi, implicit-def %eflags, debug-location !39 JG_1 %bb.6.if.then.4, implicit %eflags bb.7.if.end.6: successors: %bb.8.if.then.8(4), %bb.2.for.cond(124) liveins: %eax, %ecx, %edi, %edx, %esi, %r8d DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 DBG_VALUE 0, 0, !13, !17, debug-location !25 TEST32rr %edx, %edx, implicit-def %eflags, debug-location !45 JG_1 %bb.8.if.then.8, implicit %eflags bb.2.for.cond: successors: %bb.3.for.body(124), %bb.9.for.end(4) liveins: %eax, %ecx, %edi, %edx, %esi, %r8d DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 DBG_VALUE 0, 0, !13, !17, debug-location !25 %eax = INC32r killed %eax, implicit-def dead %eflags, debug-location !44 DBG_VALUE debug-use %eax, debug-use _, !13, !17, debug-location !25 CMP32rr %eax, %r8d, implicit-def %eflags, debug-location !31 JL_1 %bb.3.for.body, implicit %eflags JMP_1 %bb.9.for.end bb.4.if.then: liveins: %ecx, %edi DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 DBG_VALUE 0, 0, !13, !17, debug-location !25 %ecx = IMUL32rr killed %ecx, killed %edi, implicit-def dead %eflags, debug-location !36 DBG_VALUE 0, 0, !13, !17, debug-location !25 %eax = MOV32rr killed %ecx, debug-location !50 RETQ %eax, debug-location !50 bb.6.if.then.4: liveins: %ecx, %esi DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 DBG_VALUE 0, 0, !13, !17, debug-location !25 %ecx = IMUL32rr killed %ecx, killed %esi, implicit-def dead %eflags, debug-location !40 DBG_VALUE 0, 0, !13, !17, debug-location !25 %eax = MOV32rr killed %ecx, debug-location !50 RETQ %eax, debug-location !50 bb.8.if.then.8: successors: %bb.9.for.end(0) liveins: %ecx, %edx DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21 DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23 DBG_VALUE 0, 0, !13, !17, debug-location !25 %ecx = IMUL32rr killed %ecx, killed %edx, implicit-def dead %eflags, debug-location !46 bb.9.for.end: liveins: %ecx DBG_VALUE 0, 0, !13, !17, debug-location !25 %eax = MOV32rr killed %ecx, debug-location !50 RETQ %eax, debug-location !50 ...