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add tracking of control flow information

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Vern Paxson 2024-08-05 17:59:50 +01:00 • committed by Arne Welzel
parent e94764982d
commit a1185ee6bb
6 changed files with 144 additions and 24 deletions
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16
src/script_opt/ZAM/Compile.h
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@ -159,16 +159,17 @@ private:
const ZAMStmt ValueSwitch(const SwitchStmt* sw, const NameExpr* v, const ConstExpr* c);
const ZAMStmt TypeSwitch(const SwitchStmt* sw, const NameExpr* v, const ConstExpr* c);
const ZAMStmt GenSwitch(const SwitchStmt* sw, int slot, InternalTypeTag it);
void PushNexts() { PushGoTos(nexts); }
void PushBreaks() { PushGoTos(breaks); }
void PushFallThroughs() { PushGoTos(fallthroughs); }
void PushCatchReturns() { PushGoTos(catches); }
void ResolveNexts(const InstLabel l) { ResolveGoTos(nexts, l); }
void ResolveBreaks(const InstLabel l) { ResolveGoTos(breaks, l); }
void ResolveNexts(const InstLabel l) { ResolveGoTos(nexts, l, CFT_NEXT); }
void ResolveBreaks(const InstLabel l) { ResolveGoTos(breaks, l, CFT_BREAK); }
void ResolveFallThroughs(const InstLabel l) { ResolveGoTos(fallthroughs, l); }
void ResolveCatchReturns(const InstLabel l) { ResolveGoTos(catches, l); }
void ResolveCatchReturns(const InstLabel l) { ResolveGoTos(catches, l, CFT_INLINED_RETURN); }
const ZAMStmt LoopOverTable(const ForStmt* f, const NameExpr* val);
const ZAMStmt LoopOverVector(const ForStmt* f, const NameExpr* val);
@ -229,8 +230,8 @@ private:
const ZAMStmt CompileIndex(const NameExpr* n1, int n2_slot, const TypePtr& n2_type, const ListExpr* l,
bool in_when);
const ZAMStmt BuildLambda(const NameExpr* n, ExprPtr le); // marker
const ZAMStmt BuildLambda(int n_slot, ExprPtr le); // marker
const ZAMStmt BuildLambda(const NameExpr* n, ExprPtr le);
const ZAMStmt BuildLambda(int n_slot, ExprPtr le);
// Second argument is which instruction slot holds the branch target.
const ZAMStmt GenCond(const Expr* e, int& branch_v);
@ -277,7 +278,7 @@ private:
using GoToSets = std::vector<GoToSet>;
void PushGoTos(GoToSets& gotos);
void ResolveGoTos(GoToSets& gotos, const InstLabel l);
void ResolveGoTos(GoToSets& gotos, const InstLabel l, ControlFlowType cft = CFT_NONE);
ZAMStmt GenGoTo(GoToSet& v);
ZAMStmt GoToStub();
@ -322,6 +323,9 @@ private:
const ZAMStmt ErrorStmt();
const ZAMStmt LastInst();
// Adds control flow information to an instruction.
void AddCFT(ZInstI* inst, ControlFlowType cft);
// Returns a handle to state associated with building
// up a list of values.
std::unique_ptr<OpaqueVals> BuildVals(const ListExprPtr&);