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Fixup for r165490: Use DenseMap instead of std::map. Simplify the loop in CollectFunctionDIs. 

llvm-svn: 165498
This commit is contained in:
Alexey Samsonov 2012-10-09 10:34:52 +00:00
parent 908126a745
commit 2747e22051
1 changed files with 16 additions and 13 deletions
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21
llvm/lib/Transforms/IPO/DeadArgumentElimination.cpp
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@ -32,6 +32,7 @@
#include "llvm/Support/CallSite.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
@ -129,7 +130,7 @@ namespace {
// As the code generation for module is finished (and DIBuilder is
// finalized) we assume that subprogram descriptors won't be changed, and
// they are stored in map for short duration anyway.
typedef std::map<Function*, DISubprogram> FunctionDIMap;
typedef DenseMap<Function*, DISubprogram> FunctionDIMap;
FunctionDIMap FunctionDIs;
protected:
@ -200,22 +201,24 @@ void DAE::CollectFunctionDIs(Module &M) {
for (Module::named_metadata_iterator I = M.named_metadata_begin(),
E = M.named_metadata_end(); I != E; ++I) {
NamedMDNode &NMD = *I;
for (unsigned i = 0, n = NMD.getNumOperands(); i < n; ++i) {
MDNode *Node = NMD.getOperand(i);
if (DIDescriptor(Node).isCompileUnit()) {
for (unsigned MDIndex = 0, MDNum = NMD.getNumOperands();
MDIndex < MDNum; ++MDIndex) {
MDNode *Node = NMD.getOperand(MDIndex);
if (!DIDescriptor(Node).isCompileUnit())
continue;
DICompileUnit CU(Node);
const DIArray &SPs = CU.getSubprograms();
for (unsigned i = 0, n = SPs.getNumElements(); i < n; ++i) {
DISubprogram SP(SPs.getElement(i));
if (SP.Verify()) {
for (unsigned SPIndex = 0, SPNum = SPs.getNumElements();
SPIndex < SPNum; ++SPIndex) {
DISubprogram SP(SPs.getElement(SPIndex));
if (!SP.Verify())
continue;
if (Function *F = SP.getFunction())
FunctionDIs[F] = SP;
}
}
}
}
}
}
/// DeleteDeadVarargs - If this is an function that takes a ... list, and if
/// llvm.vastart is never called, the varargs list is dead for the function.