#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/IR/DebugLoc.h"
#include "llvm/IR/Metadata.h"
-#include "llvm/Support/DebugLoc.h"
-#include "llvm/Support/ValueHandle.h"
+#include "llvm/IR/ValueHandle.h"
#include <utility>
+#include <unordered_map>
namespace llvm {
class MachineInstr;
class MachineBasicBlock;
class MachineFunction;
-class LexicalScope;
//===----------------------------------------------------------------------===//
/// InsnRange - This is used to track range of instructions with identical
///
typedef std::pair<const MachineInstr *, const MachineInstr *> InsnRange;
-//===----------------------------------------------------------------------===//
-/// LexicalScopes - This class provides interface to collect and use lexical
-/// scoping information from machine instruction.
-///
-class LexicalScopes {
-public:
- LexicalScopes() : MF(NULL), CurrentFnLexicalScope(NULL) {}
- virtual ~LexicalScopes();
-
- /// initialize - Scan machine function and constuct lexical scope nest.
- virtual void initialize(const MachineFunction &);
-
- /// releaseMemory - release memory.
- virtual void releaseMemory();
-
- /// empty - Return true if there is any lexical scope information available.
- bool empty() { return CurrentFnLexicalScope == NULL; }
-
- /// isCurrentFunctionScope - Return true if given lexical scope represents
- /// current function.
- bool isCurrentFunctionScope(const LexicalScope *LS) {
- return LS == CurrentFnLexicalScope;
- }
-
- /// getCurrentFunctionScope - Return lexical scope for the current function.
- LexicalScope *getCurrentFunctionScope() const {
- return CurrentFnLexicalScope;
- }
-
- /// getMachineBasicBlocks - Populate given set using machine basic blocks
- /// which have machine instructions that belong to lexical scope identified by
- /// DebugLoc.
- void getMachineBasicBlocks(DebugLoc DL,
- SmallPtrSet<const MachineBasicBlock *, 4> &MBBs);
-
- /// dominates - Return true if DebugLoc's lexical scope dominates at least one
- /// machine instruction's lexical scope in a given machine basic block.
- bool dominates(DebugLoc DL, MachineBasicBlock *MBB);
-
- /// findLexicalScope - Find lexical scope, either regular or inlined, for the
- /// given DebugLoc. Return NULL if not found.
- LexicalScope *findLexicalScope(DebugLoc DL);
-
- /// getAbstractScopesList - Return a reference to list of abstract scopes.
- ArrayRef<LexicalScope *> getAbstractScopesList() const {
- return AbstractScopesList;
- }
-
- /// findAbstractScope - Find an abstract scope or return NULL.
- LexicalScope *findAbstractScope(const MDNode *N) {
- return AbstractScopeMap.lookup(N);
- }
-
- /// findInlinedScope - Find an inlined scope for the given DebugLoc or return
- /// NULL.
- LexicalScope *findInlinedScope(DebugLoc DL) {
- return InlinedLexicalScopeMap.lookup(DL);
- }
-
- /// findLexicalScope - Find regular lexical scope or return NULL.
- LexicalScope *findLexicalScope(const MDNode *N) {
- return LexicalScopeMap.lookup(N);
- }
-
- /// dump - Print data structures to dbgs().
- void dump();
-
-private:
- /// getOrCreateLexicalScope - Find lexical scope for the given DebugLoc. If
- /// not available then create new lexical scope.
- LexicalScope *getOrCreateLexicalScope(DebugLoc DL);
-
- /// getOrCreateRegularScope - Find or create a regular lexical scope.
- LexicalScope *getOrCreateRegularScope(MDNode *Scope);
-
- /// getOrCreateInlinedScope - Find or create an inlined lexical scope.
- LexicalScope *getOrCreateInlinedScope(MDNode *Scope, MDNode *InlinedAt);
-
- /// getOrCreateAbstractScope - Find or create an abstract lexical scope.
- LexicalScope *getOrCreateAbstractScope(const MDNode *N);
-
- /// extractLexicalScopes - Extract instruction ranges for each lexical scopes
- /// for the given machine function.
- void extractLexicalScopes(SmallVectorImpl<InsnRange> &MIRanges,
- DenseMap<const MachineInstr *, LexicalScope *> &M);
- void constructScopeNest(LexicalScope *Scope);
- void
- assignInstructionRanges(SmallVectorImpl<InsnRange> &MIRanges,
- DenseMap<const MachineInstr *, LexicalScope *> &M);
-
-private:
- const MachineFunction *MF;
-
- /// LexicalScopeMap - Tracks the scopes in the current function. Owns the
- /// contained LexicalScope*s.
- DenseMap<const MDNode *, LexicalScope *> LexicalScopeMap;
-
- /// InlinedLexicalScopeMap - Tracks inlined function scopes in current
- /// function.
- DenseMap<DebugLoc, LexicalScope *> InlinedLexicalScopeMap;
-
- /// AbstractScopeMap - These scopes are not included LexicalScopeMap.
- /// AbstractScopes owns its LexicalScope*s.
- DenseMap<const MDNode *, LexicalScope *> AbstractScopeMap;
-
- /// AbstractScopesList - Tracks abstract scopes constructed while processing
- /// a function.
- SmallVector<LexicalScope *, 4> AbstractScopesList;
-
- /// CurrentFnLexicalScope - Top level scope for the current function.
- ///
- LexicalScope *CurrentFnLexicalScope;
-};
-
//===----------------------------------------------------------------------===//
/// LexicalScope - This class is used to track scope information.
///
class LexicalScope {
- virtual void anchor();
public:
LexicalScope(LexicalScope *P, const MDNode *D, const MDNode *I, bool A)
- : Parent(P), Desc(D), InlinedAtLocation(I), AbstractScope(A), LastInsn(0),
- FirstInsn(0), DFSIn(0), DFSOut(0) {
+ : Parent(P), Desc(D), InlinedAtLocation(I), AbstractScope(A),
+ LastInsn(nullptr), FirstInsn(nullptr), DFSIn(0), DFSOut(0) {
if (Parent)
Parent->addChild(this);
}
- virtual ~LexicalScope() {}
-
// Accessors.
LexicalScope *getParent() const { return Parent; }
const MDNode *getDesc() const { return Desc; }
/// closeInsnRange - Create a range based on FirstInsn and LastInsn collected
/// until now. This is used when a new scope is encountered while walking
/// machine instructions.
- void closeInsnRange(LexicalScope *NewScope = NULL) {
+ void closeInsnRange(LexicalScope *NewScope = nullptr) {
assert(LastInsn && "Last insn missing!");
Ranges.push_back(InsnRange(FirstInsn, LastInsn));
- FirstInsn = NULL;
- LastInsn = NULL;
+ FirstInsn = nullptr;
+ LastInsn = nullptr;
// If Parent dominates NewScope then do not close Parent's instruction
// range.
if (Parent && (!NewScope || !Parent->dominates(NewScope)))
// scope nesting.
};
+//===----------------------------------------------------------------------===//
+/// LexicalScopes - This class provides interface to collect and use lexical
+/// scoping information from machine instruction.
+///
+class LexicalScopes {
+public:
+ LexicalScopes() : MF(nullptr), CurrentFnLexicalScope(nullptr) {}
+
+ /// initialize - Scan machine function and constuct lexical scope nest, resets
+ /// the instance if necessary.
+ void initialize(const MachineFunction &);
+
+ /// releaseMemory - release memory.
+ void reset();
+
+ /// empty - Return true if there is any lexical scope information available.
+ bool empty() { return CurrentFnLexicalScope == nullptr; }
+
+ /// getCurrentFunctionScope - Return lexical scope for the current function.
+ LexicalScope *getCurrentFunctionScope() const {
+ return CurrentFnLexicalScope;
+ }
+
+ /// getMachineBasicBlocks - Populate given set using machine basic blocks
+ /// which have machine instructions that belong to lexical scope identified by
+ /// DebugLoc.
+ void getMachineBasicBlocks(DebugLoc DL,
+ SmallPtrSetImpl<const MachineBasicBlock *> &MBBs);
+
+ /// dominates - Return true if DebugLoc's lexical scope dominates at least one
+ /// machine instruction's lexical scope in a given machine basic block.
+ bool dominates(DebugLoc DL, MachineBasicBlock *MBB);
+
+ /// findLexicalScope - Find lexical scope, either regular or inlined, for the
+ /// given DebugLoc. Return NULL if not found.
+ LexicalScope *findLexicalScope(DebugLoc DL);
+
+ /// getAbstractScopesList - Return a reference to list of abstract scopes.
+ ArrayRef<LexicalScope *> getAbstractScopesList() const {
+ return AbstractScopesList;
+ }
+
+ /// findAbstractScope - Find an abstract scope or return null.
+ LexicalScope *findAbstractScope(const MDNode *N) {
+ auto I = AbstractScopeMap.find(N);
+ return I != AbstractScopeMap.end() ? &I->second : nullptr;
+ }
+
+ /// findInlinedScope - Find an inlined scope for the given DebugLoc or return
+ /// NULL.
+ LexicalScope *findInlinedScope(DebugLoc DL);
+
+ /// findLexicalScope - Find regular lexical scope or return null.
+ LexicalScope *findLexicalScope(const MDNode *N) {
+ auto I = LexicalScopeMap.find(N);
+ return I != LexicalScopeMap.end() ? &I->second : nullptr;
+ }
+
+ /// dump - Print data structures to dbgs().
+ void dump();
+
+ /// getOrCreateAbstractScope - Find or create an abstract lexical scope.
+ LexicalScope *getOrCreateAbstractScope(const MDNode *N);
+
+private:
+ /// getOrCreateLexicalScope - Find lexical scope for the given DebugLoc. If
+ /// not available then create new lexical scope.
+ LexicalScope *getOrCreateLexicalScope(DebugLoc DL);
+
+ /// getOrCreateRegularScope - Find or create a regular lexical scope.
+ LexicalScope *getOrCreateRegularScope(MDNode *Scope);
+
+ /// getOrCreateInlinedScope - Find or create an inlined lexical scope.
+ LexicalScope *getOrCreateInlinedScope(MDNode *Scope, MDNode *InlinedAt);
+
+ /// extractLexicalScopes - Extract instruction ranges for each lexical scopes
+ /// for the given machine function.
+ void extractLexicalScopes(SmallVectorImpl<InsnRange> &MIRanges,
+ DenseMap<const MachineInstr *, LexicalScope *> &M);
+ void constructScopeNest(LexicalScope *Scope);
+ void
+ assignInstructionRanges(SmallVectorImpl<InsnRange> &MIRanges,
+ DenseMap<const MachineInstr *, LexicalScope *> &M);
+
+private:
+ const MachineFunction *MF;
+
+ /// LexicalScopeMap - Tracks the scopes in the current function.
+ // Use an unordered_map to ensure value pointer validity over insertion.
+ std::unordered_map<const MDNode *, LexicalScope> LexicalScopeMap;
+
+ /// InlinedLexicalScopeMap - Tracks inlined function scopes in current
+ /// function.
+ std::unordered_map<std::pair<const MDNode *, const MDNode *>, LexicalScope,
+ pair_hash<const MDNode *, const MDNode *>>
+ InlinedLexicalScopeMap;
+
+ /// AbstractScopeMap - These scopes are not included LexicalScopeMap.
+ // Use an unordered_map to ensure value pointer validity over insertion.
+ std::unordered_map<const MDNode *, LexicalScope> AbstractScopeMap;
+
+ /// AbstractScopesList - Tracks abstract scopes constructed while processing
+ /// a function.
+ SmallVector<LexicalScope *, 4> AbstractScopesList;
+
+ /// CurrentFnLexicalScope - Top level scope for the current function.
+ ///
+ LexicalScope *CurrentFnLexicalScope;
+};
+
} // end llvm namespace
#endif
projects / oota-llvm.git / blobdiff