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Add an isTailCall flag to LowerCallTo 

llvm-svn: 21958
This commit is contained in:
Chris Lattner 2005-05-13 18:50:42 +00:00
parent d0feb64443
commit 2e77db6af6
8 changed files with 34 additions and 20 deletions
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4
llvm/include/llvm/Target/TargetLowering.h
View File

@ -262,8 +262,8 @@ public:
typedef std::vector<std::pair<SDOperand, const Type*> > ArgListTy;
virtual std::pair<SDOperand, SDOperand>
LowerCallTo(SDOperand Chain, const Type *RetTy, bool isVarArg,
unsigned CallingConv, SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG) = 0;
unsigned CallingConv, bool isTailCall, SDOperand Callee,
ArgListTy &Args, SelectionDAG &DAG) = 0;
/// LowerVAStart - This lowers the llvm.va_start intrinsic. If not
/// implemented, this method prints a message and aborts.

11
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
View File

@ -18,6 +18,7 @@
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/CallingConv.h"
#include "llvm/Constants.h"
#include <iostream>
using namespace llvm;
@ -930,7 +931,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
}
std::pair<SDOperand,SDOperand> CallResult =
TLI.LowerCallTo(Tmp1, Type::VoidTy, false, 0,
TLI.LowerCallTo(Tmp1, Type::VoidTy, false, CallingConv::C, false,
DAG.getExternalSymbol(FnName, IntPtr), Args, DAG);
Result = LegalizeOp(CallResult.second);
break;
@ -1255,7 +1256,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
Args.push_back(std::make_pair(Tmp1, T));
// FIXME: should use ExpandLibCall!
std::pair<SDOperand,SDOperand> CallResult =
TLI.LowerCallTo(DAG.getEntryNode(), T, false, 0,
TLI.LowerCallTo(DAG.getEntryNode(), T, false, CallingConv::C, true,
DAG.getExternalSymbol(FnName, VT), Args, DAG);
Result = LegalizeOp(CallResult.first);
break;
@ -2107,7 +2108,8 @@ SDOperand SelectionDAGLegalize::ExpandLibCall(const char *Name, SDNode *Node,
// Splice the libcall in wherever FindInputOutputChains tells us to.
const Type *RetTy = MVT::getTypeForValueType(Node->getValueType(0));
std::pair<SDOperand,SDOperand> CallInfo =
TLI.LowerCallTo(InChain, RetTy, false, 0, Callee, Args, DAG);
TLI.LowerCallTo(InChain, RetTy, false, CallingConv::C, false,
Callee, Args, DAG);
SpliceCallInto(CallInfo.second, OutChain);
NeedsAnotherIteration = true;
@ -2204,7 +2206,8 @@ ExpandIntToFP(bool isSigned, MVT::ValueType DestTy, SDOperand Source) {
const Type *RetTy = MVT::getTypeForValueType(DestTy);
std::pair<SDOperand,SDOperand> CallResult =
TLI.LowerCallTo(InChain, RetTy, false, 0, Callee, Args, DAG);
TLI.LowerCallTo(InChain, RetTy, false, CallingConv::C, true,
Callee, Args, DAG);
SpliceCallInto(CallResult.second, OutChain);
return CallResult.first;

7
llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
View File

@ -13,6 +13,7 @@
#define DEBUG_TYPE "isel"
#include "llvm/CodeGen/SelectionDAGISel.h"
#include "llvm/CallingConv.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
@ -774,7 +775,7 @@ void SelectionDAGLowering::visitCall(CallInst &I) {
std::pair<SDOperand,SDOperand> Result =
TLI.LowerCallTo(getRoot(), I.getType(), FTy->isVarArg(), I.getCallingConv(),
Callee, Args, DAG);
I.isTailCall(), Callee, Args, DAG);
if (I.getType() != Type::VoidTy)
setValue(&I, Result.first);
DAG.setRoot(Result.second);
@ -799,7 +800,7 @@ void SelectionDAGLowering::visitMalloc(MallocInst &I) {
Args.push_back(std::make_pair(Src, TLI.getTargetData().getIntPtrType()));
std::pair<SDOperand,SDOperand> Result =
TLI.LowerCallTo(getRoot(), I.getType(), false, 0,
TLI.LowerCallTo(getRoot(), I.getType(), false, CallingConv::C, true,
DAG.getExternalSymbol("malloc", IntPtr),
Args, DAG);
setValue(&I, Result.first); // Pointers always fit in registers
@ -812,7 +813,7 @@ void SelectionDAGLowering::visitFree(FreeInst &I) {
TLI.getTargetData().getIntPtrType()));
MVT::ValueType IntPtr = TLI.getPointerTy();
std::pair<SDOperand,SDOperand> Result =
TLI.LowerCallTo(getRoot(), Type::VoidTy, false, 0,
TLI.LowerCallTo(getRoot(), Type::VoidTy, false, CallingConv::C, true,
DAG.getExternalSymbol("free", IntPtr), Args, DAG);
DAG.setRoot(Result.second);
}

5
llvm/lib/Target/Alpha/AlphaISelPattern.cpp
View File

@ -119,7 +119,8 @@ namespace {
/// actual call.
virtual std::pair<SDOperand, SDOperand>
LowerCallTo(SDOperand Chain, const Type *RetTy, bool isVarArg, unsigned CC,
SDOperand Callee, ArgListTy &Args, SelectionDAG &DAG);
bool isTailCall, SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG);
virtual std::pair<SDOperand, SDOperand>
LowerVAStart(SDOperand Chain, SelectionDAG &DAG);
@ -304,7 +305,7 @@ AlphaTargetLowering::LowerArguments(Function &F, SelectionDAG &DAG)
std::pair<SDOperand, SDOperand>
AlphaTargetLowering::LowerCallTo(SDOperand Chain,
const Type *RetTy, bool isVarArg,
unsigned CallingConv,
unsigned CallingConv, bool isTailCall,
SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG) {
int NumBytes = 0;

5
llvm/lib/Target/IA64/IA64ISelPattern.cpp
View File

@ -110,7 +110,8 @@ namespace {
/// actual call.
virtual std::pair<SDOperand, SDOperand>
LowerCallTo(SDOperand Chain, const Type *RetTy, bool isVarArg, unsigned CC,
SDOperand Callee, ArgListTy &Args, SelectionDAG &DAG);
bool isTailCall, SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG);
virtual std::pair<SDOperand, SDOperand>
LowerVAStart(SDOperand Chain, SelectionDAG &DAG);
@ -310,7 +311,7 @@ IA64TargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
std::pair<SDOperand, SDOperand>
IA64TargetLowering::LowerCallTo(SDOperand Chain,
const Type *RetTy, bool isVarArg,
unsigned CallingConv,
unsigned CallingConv, bool isTailCall,
SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG) {

5
llvm/lib/Target/PowerPC/PPC32ISelPattern.cpp
View File

@ -94,7 +94,8 @@ namespace {
/// actual call.
virtual std::pair<SDOperand, SDOperand>
LowerCallTo(SDOperand Chain, const Type *RetTy, bool isVarArg, unsigned CC,
SDOperand Callee, ArgListTy &Args, SelectionDAG &DAG);
bool isTailCall, SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG);
virtual std::pair<SDOperand, SDOperand>
LowerVAStart(SDOperand Chain, SelectionDAG &DAG);
@ -281,7 +282,7 @@ PPC32TargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
std::pair<SDOperand, SDOperand>
PPC32TargetLowering::LowerCallTo(SDOperand Chain,
const Type *RetTy, bool isVarArg,
unsigned CallingConv,
unsigned CallingConv, bool isTailCall,
SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG) {
// args_to_use will accumulate outgoing args for the ISD::CALL case in

5
llvm/lib/Target/PowerPC/PPC64ISelPattern.cpp
View File

@ -94,7 +94,8 @@ namespace {
/// actual call.
virtual std::pair<SDOperand, SDOperand>
LowerCallTo(SDOperand Chain, const Type *RetTy, bool isVarArg, unsigned CC,
SDOperand Callee, ArgListTy &Args, SelectionDAG &DAG);
bool isTailCall, SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG);
virtual std::pair<SDOperand, SDOperand>
LowerVAStart(SDOperand Chain, SelectionDAG &DAG);
@ -237,7 +238,7 @@ PPC64TargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
std::pair<SDOperand, SDOperand>
PPC64TargetLowering::LowerCallTo(SDOperand Chain,
const Type *RetTy, bool isVarArg,
unsigned CallingConv,
unsigned CallingConv, bool isTailCall,
SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG) {
// args_to_use will accumulate outgoing args for the ISD::CALL case in

12
llvm/lib/Target/X86/X86ISelPattern.cpp
View File

@ -45,6 +45,7 @@ namespace {
class X86TargetLowering : public TargetLowering {
int VarArgsFrameIndex; // FrameIndex for start of varargs area.
int ReturnAddrIndex; // FrameIndex for return slot.
int BytesToPopOnReturn; // Number of bytes ret should pop.
public:
X86TargetLowering(TargetMachine &TM) : TargetLowering(TM) {
// Set up the TargetLowering object.
@ -117,7 +118,8 @@ namespace {
/// actual call.
virtual std::pair<SDOperand, SDOperand>
LowerCallTo(SDOperand Chain, const Type *RetTy, bool isVarArg, unsigned CC,
SDOperand Callee, ArgListTy &Args, SelectionDAG &DAG);
bool isTailCall, SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG);
virtual std::pair<SDOperand, SDOperand>
LowerVAStart(SDOperand Chain, SelectionDAG &DAG);
@ -154,6 +156,7 @@ X86TargetLowering::LowerArguments(Function &F, SelectionDAG &DAG) {
std::pair<SDOperand, SDOperand>
X86TargetLowering::LowerCallTo(SDOperand Chain, const Type *RetTy,
bool isVarArg, unsigned CallingConv,
bool isTailCall,
SDOperand Callee, ArgListTy &Args,
SelectionDAG &DAG) {
assert((!isVarArg || CallingConv == CallingConv::C) &&
@ -330,7 +333,8 @@ X86TargetLowering::LowerCCCCallTo(SDOperand Chain, const Type *RetTy,
SDOperand TheCall = SDOperand(DAG.getCall(RetVals, Chain, Callee), 0);
Chain = TheCall.getValue(RetTyVT != MVT::isVoid);
Chain = DAG.getNode(ISD::CALLSEQ_END, MVT::Other, Chain,
DAG.getConstant(NumBytes, getPointerTy()));
DAG.getConstant(NumBytes, getPointerTy()),
DAG.getConstant(0, getPointerTy()));
return std::make_pair(TheCall, Chain);
}
@ -669,7 +673,9 @@ X86TargetLowering::LowerFastCCCallTo(SDOperand Chain, const Type *RetTy,
RegValuesToPass), 0);
Chain = TheCall.getValue(RetTyVT != MVT::isVoid);
Chain = DAG.getNode(ISD::CALLSEQ_END, MVT::Other, Chain,
DAG.getConstant(NumBytes, getPointerTy()));
DAG.getConstant(NumBytes, getPointerTy()),
// The callee pops the arguments off the stack.
DAG.getConstant(ArgOffset, getPointerTy()));
return std::make_pair(TheCall, Chain);
}