143 lines
6.0 KiB
LLVM
143 lines
6.0 KiB
LLVM
; RUN: llc -mtriple arm-unknown-linux-gnueabi -filetype asm -o - %s | FileCheck %s --check-prefix=CHECK-FP
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; RUN: llc -mtriple arm-unknown-linux-gnueabi -filetype asm -o - %s -disable-fp-elim | FileCheck %s --check-prefix=CHECK-FP-ELIM
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; RUN: llc -mtriple thumb-unknown-linux-gnueabi -filetype asm -o - %s | FileCheck %s --check-prefix=CHECK-THUMB-FP
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; RUN: llc -mtriple thumb-unknown-linux-gnueabi -filetype asm -o - %s -disable-fp-elim | FileCheck %s --check-prefix=CHECK-THUMB-FP-ELIM
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; Tests that the initial space allocated to the varargs on the stack is
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; taken into account in the the .cfi_ directives.
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; Generated from the C program:
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; #include <stdarg.h>
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;
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; extern int foo(int);
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;
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; int sum(int count, ...) {
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; va_list vl;
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; va_start(vl, count);
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; int sum = 0;
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; for (int i = 0; i < count; i++) {
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; sum += foo(va_arg(vl, int));
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; }
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; va_end(vl);
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; }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!9, !10}
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!llvm.ident = !{!11}
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!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]
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!1 = !{!"var.c", !"/tmp"}
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!2 = !{}
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!3 = !{!4}
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!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]
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!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/tmp/var.c]
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!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 ]
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!7 = !{!8, !8}
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!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]
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!9 = !{i32 2, !"Dwarf Version", i32 4}
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!10 = !{i32 1, !"Debug Info Version", i32 2}
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!11 = !{!"clang version 3.5 "}
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!12 = !{!"0x101\00count\0016777221\000", !4, !5, !8} ; [ DW_TAG_arg_variable ] [count] [line 5]
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!13 = !{i32 5, i32 0, !4, null}
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!14 = !{!"0x100\00vl\006\000", !4, !5, !15} ; [ DW_TAG_auto_variable ] [vl] [line 6]
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!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]
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!16 = !{!"/linux-x86_64-high/gcc_4.7.2/dbg/llvm/bin/../lib/clang/3.5/include/stdarg.h", !"/tmp"}
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!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]
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!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 ]
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!19 = !{!20}
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!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 ]
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!21 = !{!"0xf\00\000\0032\0032\000\000", null, null, null} ; [ DW_TAG_pointer_type ] [line 0, size 32, align 32, offset 0] [from ]
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!22 = !{i32 6, i32 0, !4, null}
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!23 = !{i32 7, i32 0, !4, null}
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!24 = !{!"0x100\00sum\008\000", !4, !5, !8} ; [ DW_TAG_auto_variable ] [sum] [line 8]
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!25 = !{i32 8, i32 0, !4, null}
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!26 = !{!"0x100\00i\009\000", !27, !5, !8} ; [ DW_TAG_auto_variable ] [i] [line 9]
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!27 = !{!"0xb\009\000\000", !1, !4} ; [ DW_TAG_lexical_block ] [/tmp/var.c]
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!28 = !{i32 9, i32 0, !27, null}
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!29 = !{i32 10, i32 0, !30, null}
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!30 = !{!"0xb\009\000\001", !1, !27} ; [ DW_TAG_lexical_block ] [/tmp/var.c]
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!31 = !{i32 11, i32 0, !30, null}
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!32 = !{i32 12, i32 0, !4, null}
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!33 = !{i32 13, i32 0, !4, null}
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; CHECK-FP-LABEL: sum
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; CHECK-FP: .cfi_startproc
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; CHECK-FP: sub sp, sp, #16
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; CHECK-FP: .cfi_def_cfa_offset 16
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; CHECK-FP: push {r4, lr}
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; CHECK-FP: .cfi_def_cfa_offset 24
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; CHECK-FP: .cfi_offset lr, -20
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; CHECK-FP: .cfi_offset r4, -24
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; CHECK-FP: sub sp, sp, #8
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; CHECK-FP: .cfi_def_cfa_offset 32
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; CHECK-FP-ELIM-LABEL: sum
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; CHECK-FP-ELIM: .cfi_startproc
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; CHECK-FP-ELIM: sub sp, sp, #16
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; CHECK-FP-ELIM: .cfi_def_cfa_offset 16
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; CHECK-FP-ELIM: push {r4, r10, r11, lr}
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; CHECK-FP-ELIM: .cfi_def_cfa_offset 32
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; CHECK-FP-ELIM: .cfi_offset lr, -20
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; CHECK-FP-ELIM: .cfi_offset r11, -24
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; CHECK-FP-ELIM: .cfi_offset r10, -28
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; CHECK-FP-ELIM: .cfi_offset r4, -32
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; CHECK-FP-ELIM: add r11, sp, #8
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; CHECK-FP-ELIM: .cfi_def_cfa r11, 24
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; CHECK-THUMB-FP-LABEL: sum
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; CHECK-THUMB-FP: .cfi_startproc
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; CHECK-THUMB-FP: sub sp, #16
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; CHECK-THUMB-FP: .cfi_def_cfa_offset 16
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; CHECK-THUMB-FP: push {r4, r5, r7, lr}
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; CHECK-THUMB-FP: .cfi_def_cfa_offset 32
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; CHECK-THUMB-FP: .cfi_offset lr, -20
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; CHECK-THUMB-FP: .cfi_offset r7, -24
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; CHECK-THUMB-FP: .cfi_offset r5, -28
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; CHECK-THUMB-FP: .cfi_offset r4, -32
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; CHECK-THUMB-FP: sub sp, #8
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; CHECK-THUMB-FP: .cfi_def_cfa_offset 40
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; CHECK-THUMB-FP-ELIM-LABEL: sum
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; CHECK-THUMB-FP-ELIM: .cfi_startproc
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; CHECK-THUMB-FP-ELIM: sub sp, #16
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; CHECK-THUMB-FP-ELIM: .cfi_def_cfa_offset 16
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; CHECK-THUMB-FP-ELIM: push {r4, r5, r7, lr}
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; CHECK-THUMB-FP-ELIM: .cfi_def_cfa_offset 32
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; CHECK-THUMB-FP-ELIM: .cfi_offset lr, -20
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; CHECK-THUMB-FP-ELIM: .cfi_offset r7, -24
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; CHECK-THUMB-FP-ELIM: .cfi_offset r5, -28
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; CHECK-THUMB-FP-ELIM: .cfi_offset r4, -32
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; CHECK-THUMB-FP-ELIM: add r7, sp, #8
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; CHECK-THUMB-FP-ELIM: .cfi_def_cfa r7, 24
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define i32 @sum(i32 %count, ...) {
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entry:
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%vl = alloca i8*, align 4
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%vl1 = bitcast i8** %vl to i8*
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call void @llvm.va_start(i8* %vl1)
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%cmp4 = icmp sgt i32 %count, 0
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br i1 %cmp4, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.body
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%i.05 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
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%ap.cur = load i8** %vl, align 4
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%ap.next = getelementptr i8* %ap.cur, i32 4
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store i8* %ap.next, i8** %vl, align 4
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%0 = bitcast i8* %ap.cur to i32*
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%1 = load i32* %0, align 4
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%call = call i32 @foo(i32 %1) #1
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%inc = add nsw i32 %i.05, 1
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%exitcond = icmp eq i32 %inc, %count
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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call void @llvm.va_end(i8* %vl1)
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ret i32 undef
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}
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declare void @llvm.va_start(i8*) nounwind
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declare i32 @foo(i32)
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declare void @llvm.va_end(i8*) nounwind
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