1; RUN: opt < %s -add-discriminators -S | FileCheck %s 2 3; We should not generate discriminators for DWARF versions prior to 4. 4; 5; Original code: 6; 7; int foo(long i) { 8; if (i < 5) return 2; else return 90; 9; } 10; 11; None of the !dbg nodes associated with the if() statement should be 12; altered. If they are, it means that the discriminators pass added a 13; new lexical scope. 14 15define i32 @foo(i64 %i) #0 { 16entry: 17 %retval = alloca i32, align 4 18 %i.addr = alloca i64, align 8 19 store i64 %i, i64* %i.addr, align 8 20 call void @llvm.dbg.declare(metadata i64* %i.addr, metadata !13, metadata !{}), !dbg !14 21 %0 = load i64* %i.addr, align 8, !dbg !15 22; CHECK: %0 = load i64* %i.addr, align 8, !dbg !15 23 %cmp = icmp slt i64 %0, 5, !dbg !15 24; CHECK: %cmp = icmp slt i64 %0, 5, !dbg !15 25 br i1 %cmp, label %if.then, label %if.else, !dbg !15 26; CHECK: br i1 %cmp, label %if.then, label %if.else, !dbg !15 27 28if.then: ; preds = %entry 29 store i32 2, i32* %retval, !dbg !15 30 br label %return, !dbg !15 31 32if.else: ; preds = %entry 33 store i32 90, i32* %retval, !dbg !15 34 br label %return, !dbg !15 35 36return: ; preds = %if.else, %if.then 37 %1 = load i32* %retval, !dbg !17 38 ret i32 %1, !dbg !17 39} 40 41; Function Attrs: nounwind readnone 42declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 43 44attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 45attributes #1 = { nounwind readnone } 46 47!llvm.dbg.cu = !{!0} 48!llvm.module.flags = !{!10, !11} 49!llvm.ident = !{!12} 50 51!0 = !{!"0x11\0012\00clang version 3.5.0 \000\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [./no-discriminators] [DW_LANG_C99] 52!1 = !{!"no-discriminators", !"."} 53!2 = !{} 54!3 = !{!4} 55!4 = !{!"0x2e\00foo\00foo\00\001\000\001\000\006\00256\000\001", !1, !5, !6, null, i32 (i64)* @foo, null, null, !2} ; [ DW_TAG_subprogram ] [line 1] [def] [foo] 56!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [./no-discriminators] 57!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 58!7 = !{!8, !9} 59!8 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed] 60!9 = !{!"0x24\00long int\000\0064\0064\000\000\005", null, null} ; [ DW_TAG_base_type ] [long int] [line 0, size 64, align 64, offset 0, enc DW_ATE_signed] 61!10 = !{i32 2, !"Dwarf Version", i32 2} 62; CHECK: !10 = !{i32 2, !"Dwarf Version", i32 2} 63!11 = !{i32 1, !"Debug Info Version", i32 2} 64!12 = !{!"clang version 3.5.0 "} 65!13 = !{!"0x101\00i\0016777217\000", !4, !5, !9} ; [ DW_TAG_arg_variable ] [i] [line 1] 66!14 = !MDLocation(line: 1, scope: !4) 67!15 = !MDLocation(line: 2, scope: !16) 68; CHECK: !15 = !MDLocation(line: 2, scope: !16) 69!16 = !{!"0xb\002\000\000", !1, !4} ; [ DW_TAG_lexical_block ] [./no-discriminators] 70; CHECK: !16 = !{!"0xb\002\000\000", !1, !4} ; [ DW_TAG_lexical_block ] [./no-discriminators] 71!17 = !MDLocation(line: 3, scope: !4) 72