1 ; RUN: llc -mtriple arm-unknown-linux-gnueabi -filetype asm -o - %s | FileCheck %s --check-prefix=CHECK-FP
2 ; RUN: llc -mtriple arm-unknown-linux-gnueabi -filetype asm -o - %s -disable-fp-elim | FileCheck %s --check-prefix=CHECK-FP-ELIM
3 ; RUN: llc -mtriple thumb-unknown-linux-gnueabi -filetype asm -o - %s | FileCheck %s --check-prefix=CHECK-THUMB-FP
4 ; RUN: llc -mtriple thumb-unknown-linux-gnueabi -filetype asm -o - %s -disable-fp-elim | FileCheck %s --check-prefix=CHECK-THUMB-FP-ELIM
6 ; Tests that the initial space allocated to the varargs on the stack is
7 ; taken into account in the the .cfi_ directives.
9 ; Generated from the C program:
12 ; extern int foo(int);
14 ; int sum(int count, ...) {
16 ; va_start(vl, count);
18 ; for (int i = 0; i < count; i++) {
19 ; sum += foo(va_arg(vl, int));
25 !llvm.module.flags = !{!9, !10}
28 !0 = !{!"0x11\0012\00clang version 3.5 \000\00\000\00\000", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/var.c] [DW_LANG_C99]
29 !1 = !{!"var.c", !"/tmp"}
32 !4 = !{!"0x2e\00sum\00sum\00\005\000\001\000\006\00256\000\005", !1, !5, !6, null, i32 (i32, ...)* @sum, null, null, !2} ; [ DW_TAG_subprogram ] [line 5] [def] [sum]
33 !5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/tmp/var.c]
34 !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 ]
36 !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]
37 !9 = !{i32 2, !"Dwarf Version", i32 4}
38 !10 = !{i32 1, !"Debug Info Version", i32 2}
39 !11 = !{!"clang version 3.5 "}
40 !12 = !{!"0x101\00count\0016777221\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [count] [line 5]
41 !13 = !MDLocation(line: 5, scope: !4)
42 !14 = !{!"0x100\00vl\006\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [vl] [line 6]
43 !15 = !{!"0x16\00va_list\0030\000\000\000\000", !16, null, !17} ; [ DW_TAG_typedef ] [va_list] [line 30, size 0, align 0, offset 0] [from __builtin_va_list]
44 !16 = !{!"/linux-x86_64-high/gcc_4.7.2/dbg/llvm/bin/../lib/clang/3.5/include/stdarg.h", !"/tmp"}
45 !17 = !{!"0x16\00__builtin_va_list\006\000\000\000\000", !1, null, !18} ; [ DW_TAG_typedef ] [__builtin_va_list] [line 6, size 0, align 0, offset 0] [from __va_list]
46 !18 = !{!"0x13\00__va_list\006\0032\0032\000\000\000", !1, null, null, !19, null, null, null} ; [ DW_TAG_structure_type ] [__va_list] [line 6, size 32, align 32, offset 0] [def] [from ]
48 !20 = !{!"0xd\00__ap\006\0032\0032\000\000", !1, !18, !21} ; [ DW_TAG_member ] [__ap] [line 6, size 32, align 32, offset 0] [from ]
49 !21 = !{!"0xf\00\000\0032\0032\000\000", null, null, null} ; [ DW_TAG_pointer_type ] [line 0, size 32, align 32, offset 0] [from ]
50 !22 = !MDLocation(line: 6, scope: !4)
51 !23 = !MDLocation(line: 7, scope: !4)
52 !24 = !{!"0x100\00sum\008\000", !4, !5, !8} ; [ DW_TAG_auto_variable ] [sum] [line 8]
53 !25 = !MDLocation(line: 8, scope: !4)
54 !26 = !{!"0x100\00i\009\000", !27, !5, !8} ; [ DW_TAG_auto_variable ] [i] [line 9]
55 !27 = !{!"0xb\009\000\000", !1, !4} ; [ DW_TAG_lexical_block ] [/tmp/var.c]
56 !28 = !MDLocation(line: 9, scope: !27)
57 !29 = !MDLocation(line: 10, scope: !30)
58 !30 = !{!"0xb\009\000\001", !1, !27} ; [ DW_TAG_lexical_block ] [/tmp/var.c]
59 !31 = !MDLocation(line: 11, scope: !30)
60 !32 = !MDLocation(line: 12, scope: !4)
61 !33 = !MDLocation(line: 13, scope: !4)
64 ; CHECK-FP: .cfi_startproc
65 ; CHECK-FP: sub sp, sp, #16
66 ; CHECK-FP: .cfi_def_cfa_offset 16
67 ; CHECK-FP: push {r4, lr}
68 ; CHECK-FP: .cfi_def_cfa_offset 24
69 ; CHECK-FP: .cfi_offset lr, -20
70 ; CHECK-FP: .cfi_offset r4, -24
71 ; CHECK-FP: sub sp, sp, #8
72 ; CHECK-FP: .cfi_def_cfa_offset 32
74 ; CHECK-FP-ELIM-LABEL: sum
75 ; CHECK-FP-ELIM: .cfi_startproc
76 ; CHECK-FP-ELIM: sub sp, sp, #16
77 ; CHECK-FP-ELIM: .cfi_def_cfa_offset 16
78 ; CHECK-FP-ELIM: push {r4, r10, r11, lr}
79 ; CHECK-FP-ELIM: .cfi_def_cfa_offset 32
80 ; CHECK-FP-ELIM: .cfi_offset lr, -20
81 ; CHECK-FP-ELIM: .cfi_offset r11, -24
82 ; CHECK-FP-ELIM: .cfi_offset r10, -28
83 ; CHECK-FP-ELIM: .cfi_offset r4, -32
84 ; CHECK-FP-ELIM: add r11, sp, #8
85 ; CHECK-FP-ELIM: .cfi_def_cfa r11, 24
87 ; CHECK-THUMB-FP-LABEL: sum
88 ; CHECK-THUMB-FP: .cfi_startproc
89 ; CHECK-THUMB-FP: sub sp, #16
90 ; CHECK-THUMB-FP: .cfi_def_cfa_offset 16
91 ; CHECK-THUMB-FP: push {r4, lr}
92 ; CHECK-THUMB-FP: .cfi_def_cfa_offset 24
93 ; CHECK-THUMB-FP: .cfi_offset lr, -20
94 ; CHECK-THUMB-FP: .cfi_offset r4, -24
95 ; CHECK-THUMB-FP: sub sp, #8
96 ; CHECK-THUMB-FP: .cfi_def_cfa_offset 32
98 ; CHECK-THUMB-FP-ELIM-LABEL: sum
99 ; CHECK-THUMB-FP-ELIM: .cfi_startproc
100 ; CHECK-THUMB-FP-ELIM: sub sp, #16
101 ; CHECK-THUMB-FP-ELIM: .cfi_def_cfa_offset 16
102 ; CHECK-THUMB-FP-ELIM: push {r4, r6, r7, lr}
103 ; CHECK-THUMB-FP-ELIM: .cfi_def_cfa_offset 32
104 ; CHECK-THUMB-FP-ELIM: .cfi_offset lr, -20
105 ; CHECK-THUMB-FP-ELIM: .cfi_offset r7, -24
106 ; CHECK-THUMB-FP-ELIM: .cfi_offset r6, -28
107 ; CHECK-THUMB-FP-ELIM: .cfi_offset r4, -32
108 ; CHECK-THUMB-FP-ELIM: add r7, sp, #8
109 ; CHECK-THUMB-FP-ELIM: .cfi_def_cfa r7, 24
111 define i32 @sum(i32 %count, ...) {
113 %vl = alloca i8*, align 4
114 %vl1 = bitcast i8** %vl to i8*
115 call void @llvm.va_start(i8* %vl1)
116 %cmp4 = icmp sgt i32 %count, 0
117 br i1 %cmp4, label %for.body, label %for.end
119 for.body: ; preds = %entry, %for.body
120 %i.05 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
121 %ap.cur = load i8*, i8** %vl, align 4
122 %ap.next = getelementptr i8, i8* %ap.cur, i32 4
123 store i8* %ap.next, i8** %vl, align 4
124 %0 = bitcast i8* %ap.cur to i32*
125 %1 = load i32, i32* %0, align 4
126 %call = call i32 @foo(i32 %1) #1
127 %inc = add nsw i32 %i.05, 1
128 %exitcond = icmp eq i32 %inc, %count
129 br i1 %exitcond, label %for.end, label %for.body
131 for.end: ; preds = %for.body, %entry
132 call void @llvm.va_end(i8* %vl1)
136 declare void @llvm.va_start(i8*) nounwind
138 declare i32 @foo(i32)
140 declare void @llvm.va_end(i8*) nounwind