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llvm-mirror/test/DebugInfo/2009-11-05-DeadGlobalVariable.ll
Duncan P. N. Exon Smith 9c5542c040 IR: Make metadata typeless in assembly
Now that `Metadata` is typeless, reflect that in the assembly.  These
are the matching assembly changes for the metadata/value split in
r223802.

  - Only use the `metadata` type when referencing metadata from a call
    intrinsic -- i.e., only when it's used as a `Value`.

  - Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode`
    when referencing it from call intrinsics.

So, assembly like this:

    define @foo(i32 %v) {
      call void @llvm.foo(metadata !{i32 %v}, metadata !0)
      call void @llvm.foo(metadata !{i32 7}, metadata !0)
      call void @llvm.foo(metadata !1, metadata !0)
      call void @llvm.foo(metadata !3, metadata !0)
      call void @llvm.foo(metadata !{metadata !3}, metadata !0)
      ret void, !bar !2
    }
    !0 = metadata !{metadata !2}
    !1 = metadata !{i32* @global}
    !2 = metadata !{metadata !3}
    !3 = metadata !{}

turns into this:

    define @foo(i32 %v) {
      call void @llvm.foo(metadata i32 %v, metadata !0)
      call void @llvm.foo(metadata i32 7, metadata !0)
      call void @llvm.foo(metadata i32* @global, metadata !0)
      call void @llvm.foo(metadata !3, metadata !0)
      call void @llvm.foo(metadata !{!3}, metadata !0)
      ret void, !bar !2
    }
    !0 = !{!2}
    !1 = !{i32* @global}
    !2 = !{!3}
    !3 = !{}

I wrote an upgrade script that handled almost all of the tests in llvm
and many of the tests in cfe (even handling many `CHECK` lines).  I've
attached it (or will attach it in a moment if you're speedy) to PR21532
to help everyone update their out-of-tree testcases.

This is part of PR21532.

llvm-svn: 224257
2014-12-15 19:07:53 +00:00

27 lines
1.1 KiB
LLVM

; RUN: llc %s -o /dev/null
; Here variable bar is optimized away. Do not trip over while trying to generate debug info.
define i32 @foo() nounwind uwtable readnone ssp {
entry:
ret i32 42, !dbg !15
}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!18}
!0 = !{!"0x11\0012\00clang version 3.0 (trunk 139632)\001\00\000\00\000", !17, !1, !1, !3, !12, null} ; [ DW_TAG_compile_unit ]
!1 = !{i32 0}
!3 = !{!5}
!5 = !{!"0x2e\00foo\00foo\00\001\000\001\000\006\000\001\000", !17, !6, !7, null, i32 ()* @foo, null, null, null} ; [ DW_TAG_subprogram ] [line 1] [def] [scope 0] [foo]
!6 = !{!"0x29", !17} ; [ DW_TAG_file_type ]
!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 ]
!8 = !{!9}
!9 = !{!"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ]
!12 = !{!14}
!14 = !{!"0x34\00bar\00bar\00\002\001\001", !5, !6, !9, null, null} ; [ DW_TAG_variable ]
!15 = !{i32 3, i32 3, !16, null}
!16 = !{!"0xb\001\0011\000", !17, !5} ; [ DW_TAG_lexical_block ]
!17 = !{!"fb.c", !"/private/tmp"}
!18 = !{i32 1, !"Debug Info Version", i32 2}