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llvm-mirror/test/CodeGen/X86/unknown-location.ll
Duncan P. N. Exon Smith c1be4794ba Revert "Revert "DI: Fold constant arguments into a single MDString""
This reverts commit r218918, effectively reapplying r218914 after fixing
an Ocaml bindings test and an Asan crash.  The root cause of the latter
was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a
PR to investigate who requires the loose check (and why).

Original commit message follows.

--

This patch addresses the first stage of PR17891 by folding constant
arguments together into a single MDString.  Integers are stringified and
a `\0` character is used as a separator.

Part of PR17891.

Note: I've attached my testcases upgrade scripts to the PR.  If I've
just broken your out-of-tree testcases, they might help.

llvm-svn: 219010
2014-10-03 20:01:09 +00:00

37 lines
1.8 KiB
LLVM

; RUN: llc < %s -asm-verbose=false -mtriple=x86_64-apple-darwin10 -use-unknown-locations | FileCheck %s
; The divide instruction does not have a debug location. CodeGen should
; represent this in the debug information. This is done by setting line
; and column to 0
; CHECK: leal
; CHECK-NEXT: .loc 1 0 0
; CHECK: cltd
; CHECK-NEXT: idivl
; CHECK-NEXT: .loc 2 4 3
define i32 @foo(i32 %w, i32 %x, i32 %y, i32 %z) nounwind {
entry:
%a = add i32 %w, %x, !dbg !8
%b = sdiv i32 %a, %y
%c = add i32 %b, %z, !dbg !8
ret i32 %c, !dbg !8
}
!llvm.dbg.cu = !{!3}
!llvm.module.flags = !{!12}
!0 = metadata !{metadata !"0x101\00x\001\000", metadata !1, metadata !2, metadata !6} ; [ DW_TAG_arg_variable ]
!1 = metadata !{metadata !"0x2e\00foo\00foo\00foo\001\000\001\000\006\000\000\001", metadata !10, metadata !2, metadata !4, null, i32 (i32, i32, i32, i32)* @foo, null, null, null} ; [ DW_TAG_subprogram ]
!2 = metadata !{metadata !"0x29", metadata !10} ; [ DW_TAG_file_type ]
!3 = metadata !{metadata !"0x11\0012\00producer\000\00\000\00\000", metadata !10, metadata !11, metadata !11, metadata !9, null, null} ; [ DW_TAG_compile_unit ]
!4 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !10, metadata !2, null, metadata !5, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!5 = metadata !{metadata !6}
!6 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", metadata !10, metadata !2} ; [ DW_TAG_base_type ]
!7 = metadata !{metadata !"0xb\001\0030\000", metadata !2, metadata !1} ; [ DW_TAG_lexical_block ]
!8 = metadata !{i32 4, i32 3, metadata !7, null}
!9 = metadata !{metadata !1}
!10 = metadata !{metadata !"test.c", metadata !"/dir"}
!11 = metadata !{i32 0}
!12 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}