Debug Info Finder|Verifier: handle DbgLoc attached to instructions.

Also remove checking of llvm.dbg.sp since it is not used in generating dwarf.

Current state of Finder:
DebugInfoFinder tries to list all debug info MDNodes used in a module. To
list debug info MDNodes used by an instruction, DebugInfoFinder provides
processDeclare, processValue and processLocation to handle DbgDeclareInst,
DbgValueInst and DbgLoc attached to instructions. processModule will go
through all DICompileUnits in llvm.dbg.cu and list debug info MDNodes
used by the CUs.

TODO:
1> Finder has a list of CUs, SPs, Types, Scopes and global variables. We
need to add a list of variables that are used by DbgDeclareInst and
DbgValueInst.
2> MDString fields should be null or isa<MDString> and MDNode fields should be
null or isa<MDNode>. We currently use empty string or int 0 to represent null.
3> Go though Verify functions and make sure that they check field types.
4> Clean up existing testing cases to remove llvm.dbg.sp and make sure each
testing case has a llvm.dbg.cu.

Re-apply r187609 with fix to pass ocaml binding. vmcore.ml generates a debug
location with scope being metadata !{}, in verifier we treat this as a null
scope.

llvm-svn: 187812

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/test/Transforms/DeadArgElim/2010-04-30-DbgInfo.ll b/llvm/test/Transforms/DeadArgElim/2010-04-30-DbgInfo.ll
index 6bf23f4b0ef..4cb742de197 100644
--- a/llvm/test/Transforms/DeadArgElim/2010-04-30-DbgInfo.ll
+++ b/llvm/test/Transforms/DeadArgElim/2010-04-30-DbgInfo.ll
@@ -58,7 +58,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 !11 = metadata !{i32 524545, metadata !1, metadata !"hash", metadata !2, i32 10, metadata !9} ; [ DW_TAG_arg_variable ]
 !12 = metadata !{i32 524545, metadata !1, metadata !"flags", metadata !2, i32 11, metadata !9} ; [ DW_TAG_arg_variable ]
 !13 = metadata !{i32 13, i32 0, metadata !14, null}
-!14 = metadata !{i32 524299, metadata !1, i32 12, i32 0} ; [ DW_TAG_lexical_block ]
+!14 = metadata !{i32 524299, metadata !28, metadata !1, i32 12, i32 0, i32 0} ; [ DW_TAG_lexical_block ]
 !15 = metadata !{i32 524545, metadata !16, metadata !"name", metadata !2, i32 17, metadata !6} ; [ DW_TAG_arg_variable ]
 !16 = metadata !{i32 524334, metadata !28, metadata !2, metadata !"add_name_internal", metadata !"add_name_internal", metadata !"add_name_internal", i32 22, metadata !17, i1 true, i1 true, i32 0, i32 0, null, i1 false, i32 0, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
 !17 = metadata !{i32 524309, metadata !28, metadata !2, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !18, i32 0, null} ; [ DW_TAG_subroutine_type ]
@@ -69,7 +69,7 @@ declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
 !22 = metadata !{i32 524545, metadata !16, metadata !"extra", metadata !2, i32 20, metadata !19} ; [ DW_TAG_arg_variable ]
 !23 = metadata !{i32 524545, metadata !16, metadata !"flags", metadata !2, i32 21, metadata !9} ; [ DW_TAG_arg_variable ]
 !24 = metadata !{i32 23, i32 0, metadata !25, null}
-!25 = metadata !{i32 524299, metadata !16, i32 22, i32 0} ; [ DW_TAG_lexical_block ]
+!25 = metadata !{i32 524299, metadata !28, metadata !16, i32 22, i32 0, i32 0} ; [ DW_TAG_lexical_block ]
 !26 = metadata !{i32 24, i32 0, metadata !25, null}
 !27 = metadata !{i32 26, i32 0, metadata !25, null}
 !28 = metadata !{metadata !"tail.c", metadata !"/Users/echeng/LLVM/radars/r7927803/"}