1; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s -filetype=obj \ 2; RUN: | llvm-dwarfdump -debug-dump=info - \ 3; RUN: | FileCheck %s -check-prefix=CHECK -check-prefix=DWARF4 4; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s -filetype=obj -dwarf-version=3 \ 5; RUN: | llvm-dwarfdump -debug-dump=info - \ 6; RUN: | FileCheck %s -check-prefix=CHECK -check-prefix=DWARF3 7 8; FIXME: The location here needs to be fixed, but llvm-dwarfdump doesn't handle 9; DW_AT_location lists yet. 10; DWARF4: DW_AT_location [DW_FORM_sec_offset] (0x00000000) 11 12; FIXME: The location here needs to be fixed, but llvm-dwarfdump doesn't handle 13; DW_AT_location lists yet. 14; DWARF3: DW_AT_location [DW_FORM_data4] (0x00000000) 15 16; CHECK-NOT: DW_TAG 17; CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000067] = "vla") 18 19; Unfortunately llvm-dwarfdump can't unparse a list of DW_AT_locations 20; right now, so we check the asm output: 21; RUN: llc -O0 -mtriple=x86_64-apple-darwin %s -o - -filetype=asm | FileCheck %s -check-prefix=ASM-CHECK 22; vla should have a register-indirect address at one point. 23; ASM-CHECK: DEBUG_VALUE: vla <- RCX 24; ASM-CHECK: DW_OP_breg2 25 26; RUN: llvm-as %s -o - | llvm-dis - | FileCheck %s --check-prefix=PRETTY-PRINT 27; PRETTY-PRINT: [ DW_TAG_expression ] [DW_OP_deref] 28 29define void @testVLAwithSize(i32 %s) nounwind uwtable ssp { 30entry: 31 %s.addr = alloca i32, align 4 32 %saved_stack = alloca i8* 33 %i = alloca i32, align 4 34 store i32 %s, i32* %s.addr, align 4 35 call void @llvm.dbg.declare(metadata i32* %s.addr, metadata !10, metadata !{!"0x102"}), !dbg !11 36 %0 = load i32* %s.addr, align 4, !dbg !12 37 %1 = zext i32 %0 to i64, !dbg !12 38 %2 = call i8* @llvm.stacksave(), !dbg !12 39 store i8* %2, i8** %saved_stack, !dbg !12 40 %vla = alloca i32, i64 %1, align 16, !dbg !12 41 call void @llvm.dbg.declare(metadata i32* %vla, metadata !14, metadata !30), !dbg !18 42 call void @llvm.dbg.declare(metadata i32* %i, metadata !19, metadata !{!"0x102"}), !dbg !20 43 store i32 0, i32* %i, align 4, !dbg !21 44 br label %for.cond, !dbg !21 45 46for.cond: ; preds = %for.inc, %entry 47 %3 = load i32* %i, align 4, !dbg !21 48 %4 = load i32* %s.addr, align 4, !dbg !21 49 %cmp = icmp slt i32 %3, %4, !dbg !21 50 br i1 %cmp, label %for.body, label %for.end, !dbg !21 51 52for.body: ; preds = %for.cond 53 %5 = load i32* %i, align 4, !dbg !23 54 %6 = load i32* %i, align 4, !dbg !23 55 %mul = mul nsw i32 %5, %6, !dbg !23 56 %7 = load i32* %i, align 4, !dbg !23 57 %idxprom = sext i32 %7 to i64, !dbg !23 58 %arrayidx = getelementptr inbounds i32* %vla, i64 %idxprom, !dbg !23 59 store i32 %mul, i32* %arrayidx, align 4, !dbg !23 60 br label %for.inc, !dbg !25 61 62for.inc: ; preds = %for.body 63 %8 = load i32* %i, align 4, !dbg !26 64 %inc = add nsw i32 %8, 1, !dbg !26 65 store i32 %inc, i32* %i, align 4, !dbg !26 66 br label %for.cond, !dbg !26 67 68for.end: ; preds = %for.cond 69 %9 = load i8** %saved_stack, !dbg !27 70 call void @llvm.stackrestore(i8* %9), !dbg !27 71 ret void, !dbg !27 72} 73 74declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone 75 76declare i8* @llvm.stacksave() nounwind 77 78declare void @llvm.stackrestore(i8*) nounwind 79 80!llvm.dbg.cu = !{!0} 81!llvm.module.flags = !{!29} 82 83!0 = !{!"0x11\0012\00clang version 3.2 (trunk 156005) (llvm/trunk 156000)\000\00\000\00\001", !28, !1, !1, !3, !1, !1} ; [ DW_TAG_compile_unit ] 84!1 = !{} 85!3 = !{!5} 86!5 = !{!"0x2e\00testVLAwithSize\00testVLAwithSize\00\001\000\001\000\006\00256\000\002", !28, !6, !7, null, void (i32)* @testVLAwithSize, null, null, !1} ; [ DW_TAG_subprogram ] 87!6 = !{!"0x29", !28} ; [ DW_TAG_file_type ] 88!7 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !8, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 89!8 = !{null, !9} 90!9 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] 91!10 = !{!"0x101\00s\0016777217\000", !5, !6, !9} ; [ DW_TAG_arg_variable ] 92!11 = !MDLocation(line: 1, column: 26, scope: !5) 93!12 = !MDLocation(line: 3, column: 13, scope: !13) 94!13 = !{!"0xb\002\001\000", !28, !5} ; [ DW_TAG_lexical_block ] 95!14 = !{!"0x100\00vla\003\008192", !13, !6, !15} ; [ DW_TAG_auto_variable ] 96!15 = !{!"0x1\00\000\000\0032\000\000", null, null, !9, !16, i32 0, null, null, null} ; [ DW_TAG_array_type ] [line 0, size 0, align 32, offset 0] [from int] 97!16 = !{!17} 98!17 = !{!"0x21\000\00-1"} ; [ DW_TAG_subrange_type ] 99!18 = !MDLocation(line: 3, column: 7, scope: !13) 100!19 = !{!"0x100\00i\004\000", !13, !6, !9} ; [ DW_TAG_auto_variable ] 101!20 = !MDLocation(line: 4, column: 7, scope: !13) 102!21 = !MDLocation(line: 5, column: 8, scope: !22) 103!22 = !{!"0xb\005\003\001", !28, !13} ; [ DW_TAG_lexical_block ] 104!23 = !MDLocation(line: 6, column: 5, scope: !24) 105!24 = !{!"0xb\005\0027\002", !28, !22} ; [ DW_TAG_lexical_block ] 106!25 = !MDLocation(line: 7, column: 3, scope: !24) 107!26 = !MDLocation(line: 5, column: 22, scope: !22) 108!27 = !MDLocation(line: 8, column: 1, scope: !13) 109!28 = !{!"bar.c", !"/Users/echristo/tmp"} 110!29 = !{i32 1, !"Debug Info Version", i32 2} 111!30 = !{!"0x102\006"} ; [ DW_TAG_expression ] [DW_OP_deref] 112