| ; REQUIRES: object-emission |
| |
| ; RUN: llc -mtriple=x86_64-linux -O0 -filetype=obj < %s \ |
| ; RUN: | llvm-dwarfdump -debug-dump=info - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-V4 %s |
| ; RUN: llc -mtriple=x86_64-linux -dwarf-version=3 -O0 -filetype=obj < %s \ |
| ; RUN: | llvm-dwarfdump -debug-dump=info - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-V3 %s |
| |
| ; Check that we emit DW_TAG_lexical_block and that it has the right encoding |
| ; depending on the dwarf version. |
| |
| ; CHECK: DW_TAG_lexical_block |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_low_pc [DW_FORM_addr] |
| ; CHECK-NOT: DW_TAG |
| ; CHECK-V4: DW_AT_high_pc [DW_FORM_data4] |
| ; CHECK-V3: DW_AT_high_pc [DW_FORM_addr] |
| |
| ; Test case produced from: |
| ; void b() { |
| ; if (int i = 3) |
| ; return; |
| ; } |
| |
| ; Function Attrs: nounwind uwtable |
| define void @_Z1bv() #0 { |
| entry: |
| %i = alloca i32, align 4 |
| call void @llvm.dbg.declare(metadata i32* %i, metadata !11, metadata !{!"0x102"}), !dbg !14 |
| store i32 3, i32* %i, align 4, !dbg !14 |
| %0 = load i32* %i, align 4, !dbg !14 |
| %tobool = icmp ne i32 %0, 0, !dbg !14 |
| br i1 %tobool, label %if.then, label %if.end, !dbg !14 |
| |
| if.then: ; preds = %entry |
| br label %if.end, !dbg !15 |
| |
| if.end: ; preds = %if.then, %entry |
| ret void, !dbg !16 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| attributes #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" } |
| attributes #1 = { nounwind readnone } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!8, !9} |
| !llvm.ident = !{!10} |
| |
| !0 = !{!"0x11\004\00clang version 3.5.0 \000\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/lexical_block.cpp] [DW_LANG_C_plus_plus] |
| !1 = !{!"lexical_block.cpp", !"/tmp/dbginfo"} |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !{!"0x2e\00b\00b\00_Z1bv\001\000\001\000\006\00256\000\001", !1, !5, !6, null, void ()* @_Z1bv, null, null, !2} ; [ DW_TAG_subprogram ] [line 1] [def] [b] |
| !5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/tmp/dbginfo/lexical_block.cpp] |
| !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 ] |
| !7 = !{null} |
| !8 = !{i32 2, !"Dwarf Version", i32 4} |
| !9 = !{i32 1, !"Debug Info Version", i32 2} |
| !10 = !{!"clang version 3.5.0 "} |
| !11 = !{!"0x100\00i\002\000", !12, !5, !13} ; [ DW_TAG_auto_variable ] [i] [line 2] |
| !12 = !{!"0xb\002\000\000", !1, !4} ; [ DW_TAG_lexical_block ] [/tmp/dbginfo/lexical_block.cpp] |
| !13 = !{!"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] |
| !14 = !MDLocation(line: 2, scope: !12) |
| !15 = !MDLocation(line: 3, scope: !12) |
| !16 = !MDLocation(line: 4, scope: !4) |