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If there is not any llvm instruction associated with each lexical scope encoded in debug info then create such scope on demand for variable info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84262 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1811,10 +1811,18 @@ void DwarfDebug::CollectVariableInfo() {
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DIVariable DV (Var);
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DIVariable DV (Var);
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if (DV.isNull()) continue;
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if (DV.isNull()) continue;
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unsigned VSlot = VI->second;
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unsigned VSlot = VI->second;
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DbgScope *Scope = NULL;
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DenseMap<MDNode *, DbgScope *>::iterator DSI =
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DenseMap<MDNode *, DbgScope *>::iterator DSI =
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DbgScopeMap.find(DV.getContext().getNode());
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DbgScopeMap.find(DV.getContext().getNode());
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assert (DSI != DbgScopeMap.end() && "Unable to find variable scope!");
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if (DSI != DbgScopeMap.end())
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DbgScope *Scope = DSI->second;
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Scope = DSI->second;
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else
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// There is not any instruction assocated with this scope, so get
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// a new scope.
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Scope = getDbgScope(DV.getContext().getNode(),
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NULL /* Not an instruction */,
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NULL /* Not inlined */);
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assert (Scope && "Unable to find variable scope!");
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Scope->AddVariable(new DbgVariable(DV, VSlot, false));
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Scope->AddVariable(new DbgVariable(DV, VSlot, false));
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}
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}
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}
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}
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33
test/DebugInfo/2009-11-16-Scope.ll
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33
test/DebugInfo/2009-11-16-Scope.ll
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@ -0,0 +1,33 @@
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; RUN: llc %s -O0 -o /dev/null
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; PR 5197
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; There is not any llvm instruction assocated with !5. The code generator
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; should be able to handle this.
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define void @bar() nounwind ssp {
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entry:
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%count_ = alloca i32, align 4 ; <i32*> [#uses=2]
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br label %do.body, !dbg !0
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do.body: ; preds = %entry
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%0 = bitcast i32* %count_ to { }* ; <{ }*> [#uses=1]
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call void @llvm.dbg.declare({ }* %0, metadata !4)
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%conv = ptrtoint i32* %count_ to i32, !dbg !0 ; <i32> [#uses=1]
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%call = call i32 @foo(i32 %conv) ssp, !dbg !0 ; <i32> [#uses=0]
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br label %do.end, !dbg !0
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do.end: ; preds = %do.body
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ret void, !dbg !7
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}
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declare void @llvm.dbg.declare({ }*, metadata) nounwind readnone
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declare i32 @foo(i32) ssp
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!0 = metadata !{i32 5, i32 2, metadata !1, null}
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!1 = metadata !{i32 458763, metadata !2}; [DW_TAG_lexical_block ]
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!2 = metadata !{i32 458798, i32 0, metadata !3, metadata !"bar", metadata !"bar", metadata !"bar", metadata !3, i32 4, null, i1 false, i1 true}; [DW_TAG_subprogram ]
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!3 = metadata !{i32 458769, i32 0, i32 12, metadata !"genmodes.i", metadata !"/Users/yash/Downloads", metadata !"clang 1.1", i1 true, i1 false, metadata !"", i32 0}; [DW_TAG_compile_unit ]
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!4 = metadata !{i32 459008, metadata !5, metadata !"count_", metadata !3, i32 5, metadata !6}; [ DW_TAG_auto_variable ]
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!5 = metadata !{i32 458763, metadata !1}; [DW_TAG_lexical_block ]
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!6 = metadata !{i32 458788, metadata !3, metadata !"int", metadata !3, i32 0, i64 32, i64 32, i64 0, i32 0, i32 5}; [DW_TAG_base_type ]
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!7 = metadata !{i32 6, i32 1, metadata !2, null}
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