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-rw-r--r--lib/CodeGen/CGCall.h200
1 files changed, 23 insertions, 177 deletions
diff --git a/lib/CodeGen/CGCall.h b/lib/CodeGen/CGCall.h
index 85c3320..532cb59c 100644
--- a/lib/CodeGen/CGCall.h
+++ b/lib/CodeGen/CGCall.h
@@ -16,6 +16,7 @@
#define CLANG_CODEGEN_CGCALL_H
#include "CGValue.h"
+#include "EHScopeStack.h"
#include "clang/AST/CanonicalType.h"
#include "clang/AST/Type.h"
#include "llvm/ADT/FoldingSet.h"
@@ -67,6 +68,14 @@ namespace CodeGen {
llvm::Value *ToUse;
};
+ struct CallArgCleanup {
+ EHScopeStack::stable_iterator Cleanup;
+
+ /// The "is active" insertion point. This instruction is temporary and
+ /// will be removed after insertion.
+ llvm::Instruction *IsActiveIP;
+ };
+
void add(RValue rvalue, QualType type, bool needscopy = false) {
push_back(CallArg(rvalue, type, needscopy));
}
@@ -92,57 +101,25 @@ namespace CodeGen {
writeback_iterator writeback_begin() const { return Writebacks.begin(); }
writeback_iterator writeback_end() const { return Writebacks.end(); }
- private:
- SmallVector<Writeback, 1> Writebacks;
- };
-
- /// A class for recording the number of arguments that a function
- /// signature requires.
- class RequiredArgs {
- /// The number of required arguments, or ~0 if the signature does
- /// not permit optional arguments.
- unsigned NumRequired;
- public:
- enum All_t { All };
-
- RequiredArgs(All_t _) : NumRequired(~0U) {}
- explicit RequiredArgs(unsigned n) : NumRequired(n) {
- assert(n != ~0U);
- }
-
- /// Compute the arguments required by the given formal prototype,
- /// given that there may be some additional, non-formal arguments
- /// in play.
- static RequiredArgs forPrototypePlus(const FunctionProtoType *prototype,
- unsigned additional) {
- if (!prototype->isVariadic()) return All;
- return RequiredArgs(prototype->getNumArgs() + additional);
- }
-
- static RequiredArgs forPrototype(const FunctionProtoType *prototype) {
- return forPrototypePlus(prototype, 0);
- }
-
- static RequiredArgs forPrototype(CanQual<FunctionProtoType> prototype) {
- return forPrototype(prototype.getTypePtr());
+ void addArgCleanupDeactivation(EHScopeStack::stable_iterator Cleanup,
+ llvm::Instruction *IsActiveIP) {
+ CallArgCleanup ArgCleanup;
+ ArgCleanup.Cleanup = Cleanup;
+ ArgCleanup.IsActiveIP = IsActiveIP;
+ CleanupsToDeactivate.push_back(ArgCleanup);
}
- static RequiredArgs forPrototypePlus(CanQual<FunctionProtoType> prototype,
- unsigned additional) {
- return forPrototypePlus(prototype.getTypePtr(), additional);
+ ArrayRef<CallArgCleanup> getCleanupsToDeactivate() const {
+ return CleanupsToDeactivate;
}
- bool allowsOptionalArgs() const { return NumRequired != ~0U; }
- unsigned getNumRequiredArgs() const {
- assert(allowsOptionalArgs());
- return NumRequired;
- }
+ private:
+ SmallVector<Writeback, 1> Writebacks;
- unsigned getOpaqueData() const { return NumRequired; }
- static RequiredArgs getFromOpaqueData(unsigned value) {
- if (value == ~0U) return All;
- return RequiredArgs(value);
- }
+ /// Deactivate these cleanups immediately before making the call. This
+ /// is used to cleanup objects that are owned by the callee once the call
+ /// occurs.
+ SmallVector<CallArgCleanup, 1> CleanupsToDeactivate;
};
/// FunctionArgList - Type for representing both the decl and type
@@ -151,137 +128,6 @@ namespace CodeGen {
class FunctionArgList : public SmallVector<const VarDecl*, 16> {
};
- /// CGFunctionInfo - Class to encapsulate the information about a
- /// function definition.
- class CGFunctionInfo : public llvm::FoldingSetNode {
- struct ArgInfo {
- CanQualType type;
- ABIArgInfo info;
- };
-
- /// The LLVM::CallingConv to use for this function (as specified by the
- /// user).
- unsigned CallingConvention : 8;
-
- /// The LLVM::CallingConv to actually use for this function, which may
- /// depend on the ABI.
- unsigned EffectiveCallingConvention : 8;
-
- /// The clang::CallingConv that this was originally created with.
- unsigned ASTCallingConvention : 8;
-
- /// Whether this function is noreturn.
- unsigned NoReturn : 1;
-
- /// Whether this function is returns-retained.
- unsigned ReturnsRetained : 1;
-
- /// How many arguments to pass inreg.
- unsigned HasRegParm : 1;
- unsigned RegParm : 4;
-
- RequiredArgs Required;
-
- unsigned NumArgs;
- ArgInfo *getArgsBuffer() {
- return reinterpret_cast<ArgInfo*>(this+1);
- }
- const ArgInfo *getArgsBuffer() const {
- return reinterpret_cast<const ArgInfo*>(this + 1);
- }
-
- CGFunctionInfo() : Required(RequiredArgs::All) {}
-
- public:
- static CGFunctionInfo *create(unsigned llvmCC,
- const FunctionType::ExtInfo &extInfo,
- CanQualType resultType,
- ArrayRef<CanQualType> argTypes,
- RequiredArgs required);
-
- typedef const ArgInfo *const_arg_iterator;
- typedef ArgInfo *arg_iterator;
-
- const_arg_iterator arg_begin() const { return getArgsBuffer() + 1; }
- const_arg_iterator arg_end() const { return getArgsBuffer() + 1 + NumArgs; }
- arg_iterator arg_begin() { return getArgsBuffer() + 1; }
- arg_iterator arg_end() { return getArgsBuffer() + 1 + NumArgs; }
-
- unsigned arg_size() const { return NumArgs; }
-
- bool isVariadic() const { return Required.allowsOptionalArgs(); }
- RequiredArgs getRequiredArgs() const { return Required; }
-
- bool isNoReturn() const { return NoReturn; }
-
- /// In ARC, whether this function retains its return value. This
- /// is not always reliable for call sites.
- bool isReturnsRetained() const { return ReturnsRetained; }
-
- /// getASTCallingConvention() - Return the AST-specified calling
- /// convention.
- CallingConv getASTCallingConvention() const {
- return CallingConv(ASTCallingConvention);
- }
-
- /// getCallingConvention - Return the user specified calling
- /// convention, which has been translated into an LLVM CC.
- unsigned getCallingConvention() const { return CallingConvention; }
-
- /// getEffectiveCallingConvention - Return the actual calling convention to
- /// use, which may depend on the ABI.
- unsigned getEffectiveCallingConvention() const {
- return EffectiveCallingConvention;
- }
- void setEffectiveCallingConvention(unsigned Value) {
- EffectiveCallingConvention = Value;
- }
-
- bool getHasRegParm() const { return HasRegParm; }
- unsigned getRegParm() const { return RegParm; }
-
- FunctionType::ExtInfo getExtInfo() const {
- return FunctionType::ExtInfo(isNoReturn(),
- getHasRegParm(), getRegParm(),
- getASTCallingConvention(),
- isReturnsRetained());
- }
-
- CanQualType getReturnType() const { return getArgsBuffer()[0].type; }
-
- ABIArgInfo &getReturnInfo() { return getArgsBuffer()[0].info; }
- const ABIArgInfo &getReturnInfo() const { return getArgsBuffer()[0].info; }
-
- void Profile(llvm::FoldingSetNodeID &ID) {
- ID.AddInteger(getASTCallingConvention());
- ID.AddBoolean(NoReturn);
- ID.AddBoolean(ReturnsRetained);
- ID.AddBoolean(HasRegParm);
- ID.AddInteger(RegParm);
- ID.AddInteger(Required.getOpaqueData());
- getReturnType().Profile(ID);
- for (arg_iterator it = arg_begin(), ie = arg_end(); it != ie; ++it)
- it->type.Profile(ID);
- }
- static void Profile(llvm::FoldingSetNodeID &ID,
- const FunctionType::ExtInfo &info,
- RequiredArgs required,
- CanQualType resultType,
- ArrayRef<CanQualType> argTypes) {
- ID.AddInteger(info.getCC());
- ID.AddBoolean(info.getNoReturn());
- ID.AddBoolean(info.getProducesResult());
- ID.AddBoolean(info.getHasRegParm());
- ID.AddInteger(info.getRegParm());
- ID.AddInteger(required.getOpaqueData());
- resultType.Profile(ID);
- for (ArrayRef<CanQualType>::iterator
- i = argTypes.begin(), e = argTypes.end(); i != e; ++i) {
- i->Profile(ID);
- }
- }
- };
-
/// ReturnValueSlot - Contains the address where the return value of a
/// function can be stored, and whether the address is volatile or not.
class ReturnValueSlot {
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