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Debug Info: code clean up.

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Remove unnecessary creation of LexicalScope in collectDeadVariables.
The created LexicialScope was only used to get isAbstractScope, which
should be false from the creation:
"new LexicalScope(NULL, DIDescriptor(SP), NULL, false);".

We can also remove a DenseMap that holds the created LexicalScopes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193196 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Manman Ren 2013-10-22 20:59:19 +00:00
parent dd620a9ff5
commit d56c9db960
1 changed files with 1 additions and 7 deletions
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8
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -969,7 +969,6 @@ void DwarfDebug::computeInlinedDIEs() {
// Collect info for variables that were optimized out.
void DwarfDebug::collectDeadVariables() {
const Module *M = MMI->getModule();
DenseMap<const MDNode *, LexicalScope *> DeadFnScopeMap;
if (NamedMDNode *CU_Nodes = M->getNamedMetadata("llvm.dbg.cu")) {
for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
@ -987,10 +986,6 @@ void DwarfDebug::collectDeadVariables() {
if (Variables.getNumElements() == 0)
continue;
LexicalScope *Scope =
new LexicalScope(NULL, DIDescriptor(SP), NULL, false);
DeadFnScopeMap[SP] = Scope;
// Construct subprogram DIE and add variables DIEs.
CompileUnit *SPCU = CUMap.lookup(TheCU);
assert(SPCU && "Unable to find Compile Unit!");
@ -1004,13 +999,12 @@ void DwarfDebug::collectDeadVariables() {
continue;
DbgVariable NewVar(DV, NULL, this);
if (DIE *VariableDIE =
SPCU->constructVariableDIE(&NewVar, Scope->isAbstractScope()))
SPCU->constructVariableDIE(&NewVar, false))
SPDIE->addChild(VariableDIE);
}
}
}
}
DeleteContainerSeconds(DeadFnScopeMap);
}
// Type Signature [7.27] and ODR Hash code.