llvm-6502/test/Transforms/Mem2Reg/ConvertDebugInfo2.ll
Duncan P. N. Exon Smith 83902832de 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219010 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-03 20:01:09 +00:00

58 lines
3.9 KiB
LLVM

; RUN: opt -mem2reg < %s | llvm-dis | grep ".dbg " | count 7
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
declare void @foo(i32, i64, i8*)
define void @baz(i32 %a) nounwind ssp {
entry:
%x_addr.i = alloca i32 ; <i32*> [#uses=2]
%y_addr.i = alloca i64 ; <i64*> [#uses=2]
%z_addr.i = alloca i8* ; <i8**> [#uses=2]
%a_addr = alloca i32 ; <i32*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
call void @llvm.dbg.declare(metadata !{i32* %a_addr}, metadata !0, metadata !{}), !dbg !7
store i32 %a, i32* %a_addr
%0 = load i32* %a_addr, align 4, !dbg !8 ; <i32> [#uses=1]
call void @llvm.dbg.declare(metadata !{i32* %x_addr.i}, metadata !9, metadata !{}) nounwind, !dbg !15
store i32 %0, i32* %x_addr.i
call void @llvm.dbg.declare(metadata !{i64* %y_addr.i}, metadata !16, metadata !{}) nounwind, !dbg !15
store i64 55, i64* %y_addr.i
call void @llvm.dbg.declare(metadata !{i8** %z_addr.i}, metadata !17, metadata !{}) nounwind, !dbg !15
store i8* bitcast (void (i32)* @baz to i8*), i8** %z_addr.i
%1 = load i32* %x_addr.i, align 4, !dbg !18 ; <i32> [#uses=1]
%2 = load i64* %y_addr.i, align 8, !dbg !18 ; <i64> [#uses=1]
%3 = load i8** %z_addr.i, align 8, !dbg !18 ; <i8*> [#uses=1]
call void @foo(i32 %1, i64 %2, i8* %3) nounwind, !dbg !18
br label %return, !dbg !19
return: ; preds = %entry
ret void, !dbg !19
}
!llvm.dbg.cu = !{!3}
!llvm.module.flags = !{!22}
!0 = metadata !{metadata !"0x101\00a\008\000", metadata !1, metadata !2, metadata !6} ; [ DW_TAG_arg_variable ]
!1 = metadata !{metadata !"0x2e\00baz\00baz\00baz\008\000\001\000\006\000\000\008", metadata !20, metadata !2, metadata !4, null, void (i32)* @baz, null, null, null} ; [ DW_TAG_subprogram ]
!2 = metadata !{metadata !"0x29", metadata !20} ; [ DW_TAG_file_type ]
!3 = metadata !{metadata !"0x11\001\004.2.1 (Based on Apple Inc. build 5658) (LLVM build)\001\00\000\00\000", metadata !20, metadata !21, metadata !21, null, null, null} ; [ DW_TAG_compile_unit ]
!4 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !20, metadata !2, null, metadata !5, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!5 = metadata !{null, metadata !6}
!6 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", metadata !20, metadata !2} ; [ DW_TAG_base_type ]
!7 = metadata !{i32 8, i32 0, metadata !1, null}
!8 = metadata !{i32 9, i32 0, metadata !1, null}
!9 = metadata !{metadata !"0x101\00x\004\000", metadata !10, metadata !2, metadata !6} ; [ DW_TAG_arg_variable ]
!10 = metadata !{metadata !"0x2e\00bar\00bar\00bar\004\001\001\000\006\000\000\004", metadata !20, metadata !2, metadata !11, null, null, null, null, null} ; [ DW_TAG_subprogram ]
!11 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", metadata !20, metadata !2, null, metadata !12, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!12 = metadata !{null, metadata !6, metadata !13, metadata !14}
!13 = metadata !{metadata !"0x24\00long int\000\0064\0064\000\000\005", metadata !20, metadata !2} ; [ DW_TAG_base_type ]
!14 = metadata !{metadata !"0xf\00\000\0064\0064\000\000", metadata !20, metadata !2, null} ; [ DW_TAG_pointer_type ]
!15 = metadata !{i32 4, i32 0, metadata !10, metadata !8}
!16 = metadata !{metadata !"0x101\00y\004\000", metadata !10, metadata !2, metadata !13} ; [ DW_TAG_arg_variable ]
!17 = metadata !{metadata !"0x101\00z\004\000", metadata !10, metadata !2, metadata !14} ; [ DW_TAG_arg_variable ]
!18 = metadata !{i32 5, i32 0, metadata !10, metadata !8}
!19 = metadata !{i32 10, i32 0, metadata !1, null}
!20 = metadata !{metadata !"bar.c", metadata !"/tmp/"}
!21 = metadata !{i32 0}
!22 = metadata !{i32 1, metadata !"Debug Info Version", i32 2}