1 ; RUN: llc < %s -O1 -stop-after=livedebugvalues -o - | FileCheck %s 2 3 ; This ll-file was created by: 4 ; clang --target=powerpc-apple-darwin9 -O1 -S -g -emit-llvm debuginfo-stackarg.c 5 ; 6 ; with debuginfo-stackarg.c being the program: 7 ; long long foo(long long bar1, long long bar2, long long bar3, long long bar4, long long bar5) 8 ; { 9 ; return bar1 + bar2 + bar3 + bar4 + bar5; 10 ; } 11 12 ; ModuleID = 'debuginfo-stackarg.c' 13 source_filename = "debuginfo-stackarg.c" 14 target datalayout = "E-m:o-p:32:32-f64:32:64-n32" 15 target triple = "powerpc-apple-macosx10.5.0" 16 17 ; Function Attrs: nounwind readnone ssp uwtable 18 define i64 @foo(i64 %bar1, i64 %bar2, i64 %bar3, i64 %bar4, i64 %bar5) local_unnamed_addr #0 !dbg !8 { 19 ; Variable bar5 should be associated with a position on the stack (offset relative r1). 20 ; Let's verify that we point out the start address (lowest address). 21 ; 22 ; First find the metadata id for bar5. 23 ; CHECK: !17 = !DILocalVariable(name: "bar5", arg: 5 24 ; 25 ; Now check that we got two entries on the fixed stack with "expected" offsets. 26 ; CHECK-LABEL: fixedStack: 27 ; CHECK: id: 0, type: default, offset: 60, size: 4 28 ; CHECK: id: 1, type: default, offset: 56, size: 4 29 ; CHECK-NOT: id: 2 30 ; CHECK-LABEL: stack: 31 ; 32 ; Finally check the resulting function body. 33 ; We expect to find a DBG_VALUE refering to the metadata id for bar5, using the lowest 34 ; of the two fixed stack offsets found earlier. 35 ; CHECK-LABEL: body: 36 ; CHECK: DBG_VALUE debug-use $r1, 0, !17, !DIExpression(DW_OP_plus_uconst, 56) 37 entry: 38 tail call void @llvm.dbg.value(metadata i64 %bar1, metadata !13, metadata !DIExpression()), !dbg !18 39 tail call void @llvm.dbg.value(metadata i64 %bar2, metadata !14, metadata !DIExpression()), !dbg !19 40 tail call void @llvm.dbg.value(metadata i64 %bar3, metadata !15, metadata !DIExpression()), !dbg !20 41 tail call void @llvm.dbg.value(metadata i64 %bar4, metadata !16, metadata !DIExpression()), !dbg !21 42 tail call void @llvm.dbg.value(metadata i64 %bar5, metadata !17, metadata !DIExpression()), !dbg !22 43 %add = add nsw i64 %bar2, %bar1, !dbg !23 44 %add1 = add nsw i64 %add, %bar3, !dbg !24 45 %add2 = add nsw i64 %add1, %bar4, !dbg !25 46 %add3 = add nsw i64 %add2, %bar5, !dbg !26 47 ret i64 %add3, !dbg !27 48 } 49 50 ; Function Attrs: nounwind readnone speculatable 51 declare void @llvm.dbg.value(metadata, metadata, metadata) #1 52 53 attributes #0 = { nounwind readnone ssp uwtable } 54 attributes #1 = { nounwind readnone speculatable } 55 56 !llvm.dbg.cu = !{!0} 57 !llvm.module.flags = !{!3, !4, !5, !6} 58 !llvm.ident = !{!7} 59 60 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 61 !1 = !DIFile(filename: "debuginfo-stackarg.c", directory: "/repo") 62 !2 = !{} 63 !3 = !{i32 2, !"Dwarf Version", i32 2} 64 !4 = !{i32 2, !"Debug Info Version", i32 3} 65 !5 = !{i32 1, !"wchar_size", i32 4} 66 !6 = !{i32 7, !"PIC Level", i32 2} 67 !7 = !{!"clang version 6.0.0"} 68 !8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12) 69 !9 = !DISubroutineType(types: !10) 70 !10 = !{!11, !11, !11, !11, !11, !11} 71 !11 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed) 72 !12 = !{!13, !14, !15, !16, !17} 73 !13 = !DILocalVariable(name: "bar1", arg: 1, scope: !8, file: !1, line: 1, type: !11) 74 !14 = !DILocalVariable(name: "bar2", arg: 2, scope: !8, file: !1, line: 1, type: !11) 75 !15 = !DILocalVariable(name: "bar3", arg: 3, scope: !8, file: !1, line: 1, type: !11) 76 !16 = !DILocalVariable(name: "bar4", arg: 4, scope: !8, file: !1, line: 1, type: !11) 77 !17 = !DILocalVariable(name: "bar5", arg: 5, scope: !8, file: !1, line: 1, type: !11) 78 !18 = !DILocation(line: 1, column: 25, scope: !8) 79 !19 = !DILocation(line: 1, column: 41, scope: !8) 80 !20 = !DILocation(line: 1, column: 57, scope: !8) 81 !21 = !DILocation(line: 1, column: 73, scope: !8) 82 !22 = !DILocation(line: 1, column: 89, scope: !8) 83 !23 = !DILocation(line: 3, column: 15, scope: !8) 84 !24 = !DILocation(line: 3, column: 22, scope: !8) 85 !25 = !DILocation(line: 3, column: 29, scope: !8) 86 !26 = !DILocation(line: 3, column: 36, scope: !8) 87 !27 = !DILocation(line: 3, column: 3, scope: !8) 88
