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DIGlobalVariable can be used to encode debug info for globals that are directly folded into a constant by FE.

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llvm-svn: 112072
This commit is contained in:
Devang Patel 2010-08-25 18:52:02 +00:00
parent 6300d80566
commit 05becf3ac5
2 changed files with 21 additions and 2 deletions
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4
lib/Transforms/IPO/StripSymbols.cpp
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@ -350,8 +350,8 @@ bool StripDeadDebugInfo::runOnModule(Module &M) {
for (SmallVector<MDNode *, 8>::iterator I = MDs.begin(),
E = MDs.end(); I != E; ++I) {
if (M.getGlobalVariable(DIGlobalVariable(*I).getGlobal()->getName(),
true)) {
GlobalVariable *GV = DIGlobalVariable(*I).getGlobal();
if (GV && M.getGlobalVariable(GV->getName(), true)) {
if (!NMD)
NMD = M.getOrInsertNamedMetadata("llvm.dbg.gv");
NMD->addOperand(*I);

19
test/Transforms/StripSymbols/2010-08-25-crash.ll Normal file
View File

@ -0,0 +1,19 @@
; RUN: opt -strip-dead-debug-info -disable-output %s
define i32 @foo() nounwind ssp {
entry:
ret i32 0, !dbg !8
}
!llvm.dbg.sp = !{!0}
!llvm.dbg.gv = !{!6}
!0 = metadata !{i32 524334, i32 0, metadata !1, metadata !"foo", metadata !"foo", metadata !"foo", metadata !1, i32 3, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 false, i32 ()* @foo} ; [ DW_TAG_subprogram ]
!1 = metadata !{i32 524329, metadata !"/tmp/a.c", metadata !"/Volumes/Lalgate/clean/D.CW", metadata !2} ; [ DW_TAG_file_type ]
!2 = metadata !{i32 524305, i32 0, i32 12, metadata !"/tmp/a.c", metadata !"/Volumes/Lalgate/clean/D.CW", metadata !"clang version 2.8 (trunk 112062)", i1 true, i1 false, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
!3 = metadata !{i32 524309, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !4, i32 0, null} ; [ DW_TAG_subroutine_type ]
!4 = metadata !{metadata !5}
!5 = metadata !{i32 524324, metadata !1, metadata !"int", metadata !1, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
!6 = metadata !{i32 524340, i32 0, metadata !1, metadata !"i", metadata !"i", metadata !"i", metadata !1, i32 2, metadata !7, i1 true, i1 true, i32 0} ; [ DW_TAG_variable ]
!7 = metadata !{i32 524326, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i64 0, i32 0, metadata !5} ; [ DW_TAG_const_type ]
!8 = metadata !{i32 3, i32 13, metadata !9, null}
!9 = metadata !{i32 524299, metadata !0, i32 3, i32 11, metadata !1, i32 0} ; [ DW_TAG_lexical_block ]