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 5 6 ; Tests that the initial space allocated to the varargs on the stack is 7 ; taken into account in the the .cfi_ directives. 8 9 ; Generated from the C program: 10 ; #include <stdarg.h> 11 ; 12 ; extern int foo(int); 13 ; 14 ; int sum(int count, ...) { 15 ; va_list vl; 16 ; va_start(vl, count); 17 ; int sum = 0; 18 ; for (int i = 0; i < count; i++) { 19 ; sum += foo(va_arg(vl, int)); 20 ; } 21 ; va_end(vl); 22 ; } 23 24 !llvm.dbg.cu = !{!0} 25 !llvm.module.flags = !{!9, !10} 26 !llvm.ident = !{!11} 27 28 !0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.5 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !2, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [/tmp/var.c] [DW_LANG_C99] 29 !1 = metadata !{metadata !"var.c", metadata !"/tmp"} 30 !2 = metadata !{} 31 !3 = metadata !{metadata !4} 32 !4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"sum", metadata !"sum", metadata !"", i32 5, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 (i32, ...)* @sum, null, null, metadata !2, i32 5} ; [ DW_TAG_subprogram ] [line 5] [def] [sum] 33 !5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/tmp/var.c] 34 !6 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 35 !7 = metadata !{metadata !8, metadata !8} 36 !8 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed] 37 !9 = metadata !{i32 2, metadata !"Dwarf Version", i32 4} 38 !10 = metadata !{i32 1, metadata !"Debug Info Version", i32 1} 39 !11 = metadata !{metadata !"clang version 3.5 "} 40 !12 = metadata !{i32 786689, metadata !4, metadata !"count", metadata !5, i32 16777221, metadata !8, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [count] [line 5] 41 !13 = metadata !{i32 5, i32 0, metadata !4, null} 42 !14 = metadata !{i32 786688, metadata !4, metadata !"vl", metadata !5, i32 6, metadata !15, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [vl] [line 6] 43 !15 = metadata !{i32 786454, metadata !16, null, metadata !"va_list", i32 30, i64 0, i64 0, i64 0, i32 0, metadata !17} ; [ DW_TAG_typedef ] [va_list] [line 30, size 0, align 0, offset 0] [from __builtin_va_list] 44 !16 = metadata !{metadata !"/linux-x86_64-high/gcc_4.7.2/dbg/llvm/bin/../lib/clang/3.5/include/stdarg.h", metadata !"/tmp"} 45 !17 = metadata !{i32 786454, metadata !1, null, metadata !"__builtin_va_list", i32 6, i64 0, i64 0, i64 0, i32 0, metadata !18} ; [ DW_TAG_typedef ] [__builtin_va_list] [line 6, size 0, align 0, offset 0] [from __va_list] 46 !18 = metadata !{i32 786451, metadata !1, null, metadata !"__va_list", i32 6, i64 32, i64 32, i32 0, i32 0, null, metadata !19, i32 0, null, null, null} ; [ DW_TAG_structure_type ] [__va_list] [line 6, size 32, align 32, offset 0] [def] [from ] 47 !19 = metadata !{metadata !20} 48 !20 = metadata !{i32 786445, metadata !1, metadata !18, metadata !"__ap", i32 6, i64 32, i64 32, i64 0, i32 0, metadata !21} ; [ DW_TAG_member ] [__ap] [line 6, size 32, align 32, offset 0] [from ] 49 !21 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 32, i64 32, i64 0, i32 0, null} ; [ DW_TAG_pointer_type ] [line 0, size 32, align 32, offset 0] [from ] 50 !22 = metadata !{i32 6, i32 0, metadata !4, null} 51 !23 = metadata !{i32 7, i32 0, metadata !4, null} 52 !24 = metadata !{i32 786688, metadata !4, metadata !"sum", metadata !5, i32 8, metadata !8, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [sum] [line 8] 53 !25 = metadata !{i32 8, i32 0, metadata !4, null} ; [ DW_TAG_imported_declaration ] 54 !26 = metadata !{i32 786688, metadata !27, metadata !"i", metadata !5, i32 9, metadata !8, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [i] [line 9] 55 !27 = metadata !{i32 786443, metadata !1, metadata !4, i32 9, i32 0, i32 0} ; [ DW_TAG_lexical_block ] [/tmp/var.c] 56 !28 = metadata !{i32 9, i32 0, metadata !27, null} 57 !29 = metadata !{i32 10, i32 0, metadata !30, null} 58 !30 = metadata !{i32 786443, metadata !1, metadata !27, i32 9, i32 0, i32 1} ; [ DW_TAG_lexical_block ] [/tmp/var.c] 59 !31 = metadata !{i32 11, i32 0, metadata !30, null} 60 !32 = metadata !{i32 12, i32 0, metadata !4, null} 61 !33 = metadata !{i32 13, i32 0, metadata !4, null} 62 63 ; CHECK-FP-LABEL: sum 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 73 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 86 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, r5, r7, lr} 92 ; CHECK-THUMB-FP: .cfi_def_cfa_offset 32 93 ; CHECK-THUMB-FP: .cfi_offset lr, -20 94 ; CHECK-THUMB-FP: .cfi_offset r7, -24 95 ; CHECK-THUMB-FP: .cfi_offset r5, -28 96 ; CHECK-THUMB-FP: .cfi_offset r4, -32 97 ; CHECK-THUMB-FP: sub sp, #8 98 ; CHECK-THUMB-FP: .cfi_def_cfa_offset 40 99 100 ; CHECK-THUMB-FP-ELIM-LABEL: sum 101 ; CHECK-THUMB-FP-ELIM: .cfi_startproc 102 ; CHECK-THUMB-FP-ELIM: sub sp, #16 103 ; CHECK-THUMB-FP-ELIM: .cfi_def_cfa_offset 16 104 ; CHECK-THUMB-FP-ELIM: push {r4, r5, r7, lr} 105 ; CHECK-THUMB-FP-ELIM: .cfi_def_cfa_offset 32 106 ; CHECK-THUMB-FP-ELIM: .cfi_offset lr, -20 107 ; CHECK-THUMB-FP-ELIM: .cfi_offset r7, -24 108 ; CHECK-THUMB-FP-ELIM: .cfi_offset r5, -28 109 ; CHECK-THUMB-FP-ELIM: .cfi_offset r4, -32 110 ; CHECK-THUMB-FP-ELIM: add r7, sp, #8 111 ; CHECK-THUMB-FP-ELIM: .cfi_def_cfa r7, 24 112 113 define i32 @sum(i32 %count, ...) { 114 entry: 115 %vl = alloca i8*, align 4 116 %vl1 = bitcast i8** %vl to i8* 117 call void @llvm.va_start(i8* %vl1) 118 %cmp4 = icmp sgt i32 %count, 0 119 br i1 %cmp4, label %for.body, label %for.end 120 121 for.body: ; preds = %entry, %for.body 122 %i.05 = phi i32 [ %inc, %for.body ], [ 0, %entry ] 123 %ap.cur = load i8** %vl, align 4 124 %ap.next = getelementptr i8* %ap.cur, i32 4 125 store i8* %ap.next, i8** %vl, align 4 126 %0 = bitcast i8* %ap.cur to i32* 127 %1 = load i32* %0, align 4 128 %call = call i32 @foo(i32 %1) #1 129 %inc = add nsw i32 %i.05, 1 130 %exitcond = icmp eq i32 %inc, %count 131 br i1 %exitcond, label %for.end, label %for.body 132 133 for.end: ; preds = %for.body, %entry 134 call void @llvm.va_end(i8* %vl1) 135 ret i32 undef 136 } 137 138 declare void @llvm.va_start(i8*) nounwind 139 140 declare i32 @foo(i32) 141 142 declare void @llvm.va_end(i8*) nounwind 143
