mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-23 02:29:18 +00:00
Use separate named MDNode to hold each function's local variable info.
This speeds up local variable handling in DwarfDebug. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106075 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
7500e06e38
commit
2f7d5291de
@ -326,6 +326,7 @@ public:
|
||||
/// specified name. This method returns null if a NamedMDNode with the
|
||||
/// specified name is not found.
|
||||
NamedMDNode *getNamedMetadata(StringRef Name) const;
|
||||
NamedMDNode *getNamedMetadataUsingTwine(Twine Name) const;
|
||||
|
||||
/// getOrInsertNamedMetadata - Return the first named MDNode in the module
|
||||
/// with the specified name. This method returns a new NamedMDNode if a
|
||||
|
@ -1053,8 +1053,12 @@ DIVariable DIFactory::CreateVariable(unsigned Tag, DIDescriptor Context,
|
||||
// The optimizer may remove local variable. If there is an interest
|
||||
// to preserve variable info in such situation then stash it in a
|
||||
// named mdnode.
|
||||
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.lv");
|
||||
NMD->addOperand(Node);
|
||||
DISubprogram Fn(getDISubprogram(Context));
|
||||
const Twine FnLVName = Twine("llvm.dbg.lv.", Fn.getName());
|
||||
NamedMDNode *FnLocals = M.getNamedMetadataUsingTwine(FnLVName);
|
||||
if (!FnLocals)
|
||||
FnLocals = NamedMDNode::Create(VMContext, FnLVName, NULL, 0, &M);
|
||||
FnLocals->addOperand(Node);
|
||||
}
|
||||
return DIVariable(Node);
|
||||
}
|
||||
|
@ -2259,8 +2259,9 @@ void DwarfDebug::collectVariableInfo(const MachineFunction *MF) {
|
||||
}
|
||||
|
||||
// Collect info for variables that were optimized out.
|
||||
const Twine FnLVName = Twine("llvm.dbg.lv.", MF->getFunction()->getName());
|
||||
if (NamedMDNode *NMD =
|
||||
MF->getFunction()->getParent()->getNamedMetadata("llvm.dbg.lv")) {
|
||||
MF->getFunction()->getParent()->getNamedMetadataUsingTwine(FnLVName)) {
|
||||
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
|
||||
DIVariable DV(cast_or_null<MDNode>(NMD->getOperand(i)));
|
||||
if (!DV || !Processed.insert(DV))
|
||||
|
@ -17,6 +17,7 @@
|
||||
#include "llvm/DerivedTypes.h"
|
||||
#include "llvm/GVMaterializer.h"
|
||||
#include "llvm/LLVMContext.h"
|
||||
#include "llvm/ADT/SmallString.h"
|
||||
#include "llvm/ADT/STLExtras.h"
|
||||
#include "llvm/ADT/StringExtras.h"
|
||||
#include "llvm/Support/LeakDetector.h"
|
||||
@ -316,6 +317,12 @@ NamedMDNode *Module::getNamedMetadata(StringRef Name) const {
|
||||
return NamedMDSymTab->lookup(Name);
|
||||
}
|
||||
|
||||
NamedMDNode *Module::getNamedMetadataUsingTwine(Twine Name) const {
|
||||
SmallString<256> NameData;
|
||||
StringRef NameRef = Name.toStringRef(NameData);
|
||||
return NamedMDSymTab->lookup(NameRef);
|
||||
}
|
||||
|
||||
/// getOrInsertNamedMetadata - Return the first named MDNode in the module
|
||||
/// with the specified name. This method returns a new NamedMDNode if a
|
||||
/// NamedMDNode with the specified name is not found.
|
||||
|
Loading…
Reference in New Issue
Block a user