| # RUN: llc -o - %s -start-after=patchable-function -O0 -mtriple=x86_64-unknown-linux-gnu | FileCheck %s |
| |
| # Test dwarf codegen of: |
| # - DW_OP_constu, X, DW_OP_minus |
| # - DW_OP_constu, X, DW_OP_plus |
| # - DW_OP_plus_uconst, X |
| # when feeding a DW_OP_breg. |
| # |
| # Internally in LLVM the value X is saved as an "uint64_t". But when |
| # DwarfExpression::addMachineRegExpression is trying to simplify the DWARF by |
| # folding such expressions into a DW_OP_breg (or DW_OP_fbreg) the offset is |
| # converted to an "int". We must be careful when doing those folds, checking |
| # that X is in the range for "int". |
| |
| --- | |
| define void @test() !dbg !5 { |
| entry: |
| ret void, !dbg !14 |
| } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "1.cc", directory: "/tmp") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 4, type: !6, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8) |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{null} |
| !8 = !{!9} |
| !9 = !DILocalVariable(name: "buf", scope: !5, file: !1, line: 5, type: !10) |
| !10 = !DICompositeType(tag: DW_TAG_array_type, baseType: !11, size: 3200, align: 32, elements: !12) |
| !11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !12 = !{!13} |
| !13 = !DISubrange(count: 100) |
| !14 = !DILocation(line: 7, column: 1, scope: !5) |
| |
| ... |
| --- |
| name: test |
| tracksRegLiveness: true |
| body: | |
| |
| bb.0: ;-------------------------- DW_OP_plus ------------------------------- |
| |
| ; UINT_MAX |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 4294967295, DW_OP_minus), debug-location !14 |
| |
| ; UINT_MAX+1 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 4294967296, DW_OP_minus), debug-location !14 |
| |
| ; INT_MAX |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 2147483647, DW_OP_minus), debug-location !14 |
| |
| ; INT_MAX+1 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 2147483648, DW_OP_minus), debug-location !14 |
| |
| ; 0 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 0, DW_OP_minus), debug-location !14 |
| |
| ; -1 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 18446744073709551615, DW_OP_minus), debug-location !14 |
| |
| ; -2 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 18446744073709551614, DW_OP_minus), debug-location !14 |
| |
| RETQ debug-location !14 |
| |
| |
| bb.1: ;-------------------------- DW_OP_plus ------------------------------- |
| |
| ; UINT_MAX |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 4294967295, DW_OP_plus), debug-location !14 |
| |
| ; UINT_MAX+1 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 4294967296, DW_OP_plus), debug-location !14 |
| |
| ; INT_MAX |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 2147483647, DW_OP_plus), debug-location !14 |
| |
| ; INT_MAX+1 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 2147483648, DW_OP_plus), debug-location !14 |
| |
| ; 0 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 0, DW_OP_plus), debug-location !14 |
| |
| ; -1 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 18446744073709551615, DW_OP_plus), debug-location !14 |
| |
| ; -2 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_constu, 18446744073709551614, DW_OP_plus), debug-location !14 |
| |
| RETQ debug-location !14 |
| |
| |
| bb.2: ;-------------------------- DW_OP_plus_uconst ------------------------------- |
| |
| ; UINT_MAX |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_plus_uconst, 4294967295), debug-location !14 |
| |
| ; UINT_MAX+1 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_plus_uconst, 4294967296), debug-location !14 |
| |
| ; INT_MAX |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_plus_uconst, 2147483647), debug-location !14 |
| |
| ; INT_MAX+1 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_plus_uconst, 2147483648), debug-location !14 |
| |
| ; 0 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_plus_uconst, 0), debug-location !14 |
| |
| ; -1 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_plus_uconst, 18446744073709551615), debug-location !14 |
| |
| ; -2 |
| renamable $rcx = MOV64rm renamable $noreg, 1, $noreg, 0, $fs |
| DBG_VALUE renamable $rcx, 0, !9, !DIExpression(DW_OP_plus_uconst, 18446744073709551614), debug-location !14 |
| |
| RETQ debug-location !14 |
| |
| ... |
| |
| |
| # CHECK-LABEL: .Ldebug_loc0: |
| # CHECK-NEXT: .quad .Ltmp0-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp1-.Lfunc_begin0 |
| # CHECK-NEXT: .short 9 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 16 # DW_OP_constu |
| # CHECK-NEXT: .byte 255 # 4294967295 |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 15 # |
| # CHECK-NEXT: .byte 28 # DW_OP_minus |
| # CHECK-NEXT: .quad .Ltmp1-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp2-.Lfunc_begin0 |
| # CHECK-NEXT: .short 9 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 16 # DW_OP_constu |
| # CHECK-NEXT: .byte 128 # 4294967296 |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 16 # |
| # CHECK-NEXT: .byte 28 # DW_OP_minus |
| # CHECK-NEXT: .quad .Ltmp2-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp3-.Lfunc_begin0 |
| # CHECK-NEXT: .short 6 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 129 # -2147483647 |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 120 # |
| # CHECK-NEXT: .quad .Ltmp3-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp4-.Lfunc_begin0 |
| # CHECK-NEXT: .short 6 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 128 # -2147483648 |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 120 # |
| # CHECK-NEXT: .quad .Ltmp4-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp5-.Lfunc_begin0 |
| # CHECK-NEXT: .short 2 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .quad .Ltmp5-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp6-.Lfunc_begin0 |
| # CHECK-NEXT: .short 5 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 48 # DW_OP_lit0 |
| # CHECK-NEXT: .byte 32 # DW_OP_not |
| # CHECK-NEXT: .byte 28 # DW_OP_minus |
| # CHECK-NEXT: .quad .Ltmp6-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp7-.Lfunc_begin0 |
| # CHECK-NEXT: .short 14 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 16 # DW_OP_constu |
| # CHECK-NEXT: .byte 254 # 18446744073709551614 |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 1 # |
| # CHECK-NEXT: .byte 28 # DW_OP_minus |
| #----------------------------------------------------------------------- |
| # CHECK-NEXT: .quad .Ltmp8-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp9-.Lfunc_begin0 |
| # CHECK-NEXT: .short 9 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 16 # DW_OP_constu |
| # CHECK-NEXT: .byte 255 # 4294967295 |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 15 # |
| # CHECK-NEXT: .byte 34 # DW_OP_plus |
| # CHECK-NEXT: .quad .Ltmp9-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp10-.Lfunc_begin0 |
| # CHECK-NEXT: .short 9 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 16 # DW_OP_constu |
| # CHECK-NEXT: .byte 128 # 4294967296 |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 16 # |
| # CHECK-NEXT: .byte 34 # DW_OP_plus |
| # CHECK-NEXT: .quad .Ltmp10-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp11-.Lfunc_begin0 |
| # CHECK-NEXT: .short 6 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 255 # 2147483647 |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 7 # |
| # CHECK-NEXT: .quad .Ltmp11-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp12-.Lfunc_begin0 |
| # CHECK-NEXT: .short 9 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 16 # DW_OP_constu |
| # CHECK-NEXT: .byte 128 # 2147483648 |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 8 # |
| # CHECK-NEXT: .byte 34 # DW_OP_plus |
| # CHECK-NEXT: .quad .Ltmp12-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp13-.Lfunc_begin0 |
| # CHECK-NEXT: .short 2 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .quad .Ltmp13-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp14-.Lfunc_begin0 |
| # CHECK-NEXT: .short 5 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 48 # DW_OP_lit0 |
| # CHECK-NEXT: .byte 32 # DW_OP_not |
| # CHECK-NEXT: .byte 34 # DW_OP_plus |
| # CHECK-NEXT: .quad .Ltmp14-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp15-.Lfunc_begin0 |
| # CHECK-NEXT: .short 14 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 16 # DW_OP_constu |
| # CHECK-NEXT: .byte 254 # 18446744073709551614 |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 1 # |
| # CHECK-NEXT: .byte 34 # DW_OP_plus |
| #----------------------------------------------------------------------- |
| # CHECK-NEXT: .quad .Ltmp16-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp17-.Lfunc_begin0 |
| # CHECK-NEXT: .short 8 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 35 # DW_OP_plus_uconst |
| # CHECK-NEXT: .byte 255 # 4294967295 |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 15 # |
| # CHECK-NEXT: .quad .Ltmp17-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp18-.Lfunc_begin0 |
| # CHECK-NEXT: .short 8 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 35 # DW_OP_plus_uconst |
| # CHECK-NEXT: .byte 128 # 4294967296 |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 16 # |
| # CHECK-NEXT: .quad .Ltmp18-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp19-.Lfunc_begin0 |
| # CHECK-NEXT: .short 6 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 255 # 2147483647 |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 7 # |
| # CHECK-NEXT: .quad .Ltmp19-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp20-.Lfunc_begin0 |
| # CHECK-NEXT: .short 8 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 35 # DW_OP_plus_uconst |
| # CHECK-NEXT: .byte 128 # 2147483648 |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 128 # |
| # CHECK-NEXT: .byte 8 # |
| # CHECK-NEXT: .quad .Ltmp20-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp21-.Lfunc_begin0 |
| # CHECK-NEXT: .short 2 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .quad .Ltmp21-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Ltmp22-.Lfunc_begin0 |
| # CHECK-NEXT: .short 13 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 35 # DW_OP_plus_uconst |
| # CHECK-NEXT: .byte 255 # 18446744073709551615 |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 1 # |
| # CHECK-NEXT: .quad .Ltmp22-.Lfunc_begin0 |
| # CHECK-NEXT: .quad .Lfunc_end0-.Lfunc_begin0 |
| # CHECK-NEXT: .short 13 # Loc expr size |
| # CHECK-NEXT: .byte 114 # DW_OP_breg2 |
| # CHECK-NEXT: .byte 0 # 0 |
| # CHECK-NEXT: .byte 35 # DW_OP_plus_uconst |
| # CHECK-NEXT: .byte 254 # 18446744073709551614 |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 255 # |
| # CHECK-NEXT: .byte 1 # |
| # CHECK-NEXT: .quad 0 |
| # CHECK-NEXT: .quad 0 |
