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