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simplify some code. 

llvm-svn: 44994
This commit is contained in:
Chris Lattner 2007-12-13 07:34:23 +00:00
parent 3c1334013d
commit 13653d7668
1 changed files with 39 additions and 59 deletions
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98
clang/CodeGen/CGBuiltin.cpp
View File

@ -21,10 +21,8 @@
#include "llvm/Constants.h"
#include "llvm/Function.h"
#include "llvm/Intrinsics.h"
using namespace clang;
using namespace CodeGen;
using namespace llvm;
RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) {
@ -34,7 +32,7 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) {
return EmitCallExpr(CGM.getBuiltinLibFunction(BuiltinID), E);
// See if we have a target specific intrinsic.
llvm::Intrinsic::ID IntrinsicID;
Intrinsic::ID IntrinsicID;
const char *TargetPrefix = Target.getTargetPrefix();
const char *BuiltinName = getContext().BuiltinInfo.GetName(BuiltinID);
#define GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
@ -42,15 +40,13 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) {
#undef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
if (IntrinsicID != Intrinsic::not_intrinsic) {
llvm::SmallVector<llvm::Value*, 16> Args;
llvm::Function *F = llvm::Intrinsic::getDeclaration(&CGM.getModule(),
IntrinsicID);
SmallVector<Value*, 16> Args;
Function *F = Intrinsic::getDeclaration(&CGM.getModule(), IntrinsicID);
const llvm::FunctionType *FTy = F->getFunctionType();
for (unsigned i = 0, e = E->getNumArgs(); i != e; ++i) {
llvm::Value *ArgValue = EmitScalarExpr(E->getArg(i));
Value *ArgValue = EmitScalarExpr(E->getArg(i));
// If the intrinsic arg type is different from the builtin arg type
// we need to do a bit cast.
@ -64,17 +60,15 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) {
Args.push_back(ArgValue);
}
llvm::Value *V = Builder.CreateCall(F, &Args[0], &Args[0] + Args.size());
Value *V = Builder.CreateCall(F, &Args[0], &Args[0] + Args.size());
QualType BuiltinRetType = E->getType();
const llvm::Type *RetTy = BuiltinRetType->isVoidType() ?
llvm::Type::VoidTy : ConvertType(BuiltinRetType);
const llvm::Type *RetTy = llvm::Type::VoidTy;
if (!BuiltinRetType->isVoidType()) RetTy = ConvertType(BuiltinRetType);
if (RetTy != V->getType()) {
assert(V->getType()->canLosslesslyBitCastTo(RetTy) &&
"Must be able to losslessly bit cast result type");
V = Builder.CreateBitCast(V, RetTy);
}
@ -82,7 +76,7 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) {
}
// See if we have a target specific builtin that needs to be lowered.
llvm::Value *V = 0;
Value *V = 0;
if (strcmp(TargetPrefix, "x86") == 0)
V = EmitX86BuiltinExpr(BuiltinID, E);
@ -97,7 +91,7 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) {
// Unknown builtin, for now just dump it out and return undef.
if (hasAggregateLLVMType(E->getType()))
return RValue::getAggregate(CreateTempAlloca(ConvertType(E->getType())));
return RValue::get(llvm::UndefValue::get(ConvertType(E->getType())));
return RValue::get(UndefValue::get(ConvertType(E->getType())));
}
case Builtin::BI__builtin___CFStringMakeConstantString: {
const Expr *Arg = E->getArg(0);
@ -118,86 +112,73 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) {
}
case Builtin::BI__builtin_va_start:
case Builtin::BI__builtin_va_end: {
llvm::Value *ArgValue = EmitScalarExpr(E->getArg(0));
Value *ArgValue = EmitScalarExpr(E->getArg(0));
const llvm::Type *DestType = llvm::PointerType::get(llvm::Type::Int8Ty);
if (ArgValue->getType() != DestType)
ArgValue = Builder.CreateBitCast(ArgValue, DestType,
ArgValue->getNameStart());
llvm::Intrinsic::ID inst = (BuiltinID == Builtin::BI__builtin_va_start) ?
llvm::Intrinsic::vastart : llvm::Intrinsic::vaend;
llvm::Value *F = llvm::Intrinsic::getDeclaration(&CGM.getModule(), inst);
llvm::Value *V = Builder.CreateCall(F, ArgValue);
Intrinsic::ID inst = (BuiltinID == Builtin::BI__builtin_va_start) ?
Intrinsic::vastart : Intrinsic::vaend;
Value *F = Intrinsic::getDeclaration(&CGM.getModule(), inst);
Value *V = Builder.CreateCall(F, ArgValue);
return RValue::get(V);
}
case Builtin::BI__builtin_classify_type: {
llvm::APSInt Result(32);
APSInt Result(32);
if (!E->isBuiltinClassifyType(Result))
assert(0 && "Expr not __builtin_classify_type!");
return RValue::get(llvm::ConstantInt::get(Result));
return RValue::get(ConstantInt::get(Result));
}
case Builtin::BI__builtin_constant_p: {
llvm::APSInt Result(32);
APSInt Result(32);
// FIXME: Analyze the parameter and check if it is a constant.
Result = 0;
return RValue::get(llvm::ConstantInt::get(Result));
return RValue::get(ConstantInt::get(Result));
}
case Builtin::BI__builtin_abs: {
llvm::Value *ArgValue = EmitScalarExpr(E->getArg(0));
Value *ArgValue = EmitScalarExpr(E->getArg(0));
llvm::BinaryOperator *NegOp =
Builder.CreateNeg(ArgValue, (ArgValue->getName() + "neg").c_str());
llvm::Value *CmpResult =
Value *CmpResult =
Builder.CreateICmpSGE(ArgValue, NegOp->getOperand(0), "abscond");
llvm::Value *Result =
Value *Result =
Builder.CreateSelect(CmpResult, ArgValue, NegOp, "abs");
return RValue::get(Result);
}
case Builtin::BI__builtin_expect: {
llvm::Value *Condition = EmitScalarExpr(E->getArg(0));
return RValue::get(Condition);
}
case Builtin::BI__builtin_expect:
return RValue::get(EmitScalarExpr(E->getArg(0)));
case Builtin::BI__builtin_bswap32:
case Builtin::BI__builtin_bswap64: {
llvm::Value *ArgValue = EmitScalarExpr(E->getArg(0));
Value *ArgValue = EmitScalarExpr(E->getArg(0));
const llvm::Type *ArgType = ArgValue->getType();
llvm::Value *F =
llvm::Intrinsic::getDeclaration(&CGM.getModule(),
llvm::Intrinsic::bswap,
&ArgType, 1);
llvm::Value *V = Builder.CreateCall(F, ArgValue, "tmp");
return RValue::get(V);
Value *F = Intrinsic::getDeclaration(&CGM.getModule(), Intrinsic::bswap,
&ArgType, 1);
return RValue::get(Builder.CreateCall(F, ArgValue, "tmp"));
}
case Builtin::BI__builtin_inff: {
llvm::APFloat f(llvm::APFloat::IEEEsingle,
llvm::APFloat::fcInfinity, false);
llvm::Value *V = llvm::ConstantFP::get(llvm::Type::FloatTy, f);
return RValue::get(V);
APFloat f(APFloat::IEEEsingle, APFloat::fcInfinity, false);
return RValue::get(ConstantFP::get(llvm::Type::FloatTy, f));
}
case Builtin::BI__builtin_inf:
// FIXME: mapping long double onto double.
case Builtin::BI__builtin_infl: {
llvm::APFloat f(llvm::APFloat::IEEEdouble,
llvm::APFloat::fcInfinity, false);
llvm::Value *V = llvm::ConstantFP::get(llvm::Type::DoubleTy, f);
return RValue::get(V);
APFloat f(APFloat::IEEEdouble, APFloat::fcInfinity, false);
return RValue::get(ConstantFP::get(llvm::Type::DoubleTy, f));
}
}
return RValue::get(0);
}
llvm::Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
const CallExpr *E)
{
Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
const CallExpr *E) {
switch (BuiltinID) {
default: return 0;
case X86::BI__builtin_ia32_mulps:
@ -217,7 +198,7 @@ llvm::Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
EmitScalarExpr(E->getArg(1)),
"pxor");
case X86::BI__builtin_ia32_pandn: {
llvm::Value *V1 = Builder.CreateNot(EmitScalarExpr(E->getArg(0)), "tmp");
Value *V1 = Builder.CreateNot(EmitScalarExpr(E->getArg(0)), "tmp");
return Builder.CreateAnd(V1, EmitScalarExpr(E->getArg(1)), "pandn");
}
case X86::BI__builtin_ia32_paddb:
@ -266,9 +247,9 @@ llvm::Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
0, 2,
"punpckldq");
case X86::BI__builtin_ia32_pshufd: {
llvm::Value *V = EmitScalarExpr(E->getArg(0));
llvm::ConstantInt *I =
cast<llvm::ConstantInt>(EmitScalarExpr(E->getArg(1)));
Value *V = EmitScalarExpr(E->getArg(0));
ConstantInt *I =
cast<ConstantInt>(EmitScalarExpr(E->getArg(1)));
int i = I->getZExtValue();
return EmitShuffleVector(V, V,
@ -279,9 +260,8 @@ llvm::Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
}
}
llvm::Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
const CallExpr *E)
{
Value *CodeGenFunction::EmitPPCBuiltinExpr(unsigned BuiltinID,
const CallExpr *E) {
switch (BuiltinID) {
default: return 0;
}