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//===- AMDILIntrinsicInfo.cpp - AMDIL Intrinsic Information ------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//==-----------------------------------------------------------------------===//
//
// This file contains the AMDIL Implementation of the IntrinsicInfo class.
//
//===-----------------------------------------------------------------------===//
#include "AMDILIntrinsicInfo.h"
#include "AMDIL.h"
#include "AMDILSubtarget.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Intrinsics.h"
#include "llvm/Module.h"
using namespace llvm;
#define GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
#include "AMDILGenIntrinsics.inc"
#undef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN
AMDILIntrinsicInfo::AMDILIntrinsicInfo(TargetMachine *tm)
: TargetIntrinsicInfo(), mTM(tm)
{
}
std::string
AMDILIntrinsicInfo::getName(unsigned int IntrID, Type **Tys,
unsigned int numTys) const
{
static const char* const names[] = {
#define GET_INTRINSIC_NAME_TABLE
#include "AMDILGenIntrinsics.inc"
#undef GET_INTRINSIC_NAME_TABLE
};
//assert(!isOverloaded(IntrID)
//&& "AMDIL Intrinsics are not overloaded");
if (IntrID < Intrinsic::num_intrinsics) {
return 0;
}
assert(IntrID < AMDGPUIntrinsic::num_AMDIL_intrinsics
&& "Invalid intrinsic ID");
std::string Result(names[IntrID - Intrinsic::num_intrinsics]);
return Result;
}
static bool
checkTruncation(const char *Name, unsigned int& Len)
{
const char *ptr = Name + (Len - 1);
while(ptr != Name && *ptr != '_') {
--ptr;
}
// We don't want to truncate on atomic instructions
// but we do want to enter the check Truncation
// section so that we can translate the atomic
// instructions if we need to.
if (!strncmp(Name, "__atom", 6)) {
return true;
}
if (strstr(ptr, "i32")
|| strstr(ptr, "u32")
|| strstr(ptr, "i64")
|| strstr(ptr, "u64")
|| strstr(ptr, "f32")
|| strstr(ptr, "f64")
|| strstr(ptr, "i16")
|| strstr(ptr, "u16")
|| strstr(ptr, "i8")
|| strstr(ptr, "u8")) {
Len = (unsigned int)(ptr - Name);
return true;
}
return false;
}
// We don't want to support both the OpenCL 1.0 atomics
// and the 1.1 atomics with different names, so we translate
// the 1.0 atomics to the 1.1 naming here if needed.
static char*
atomTranslateIfNeeded(const char *Name, unsigned int Len)
{
char *buffer = NULL;
if (strncmp(Name, "__atom_", 7)) {
// If we are not starting with __atom_, then
// go ahead and continue on with the allocation.
buffer = new char[Len + 1];
memcpy(buffer, Name, Len);
} else {
buffer = new char[Len + 3];
memcpy(buffer, "__atomic_", 9);
memcpy(buffer + 9, Name + 7, Len - 7);
Len += 2;
}
buffer[Len] = '\0';
return buffer;
}
unsigned int
AMDILIntrinsicInfo::lookupName(const char *Name, unsigned int Len) const
{
#define GET_FUNCTION_RECOGNIZER
#include "AMDILGenIntrinsics.inc"
#undef GET_FUNCTION_RECOGNIZER
AMDGPUIntrinsic::ID IntrinsicID
= (AMDGPUIntrinsic::ID)Intrinsic::not_intrinsic;
if (checkTruncation(Name, Len)) {
char *buffer = atomTranslateIfNeeded(Name, Len);
IntrinsicID = getIntrinsicForGCCBuiltin("AMDIL", buffer);
delete [] buffer;
} else {
IntrinsicID = getIntrinsicForGCCBuiltin("AMDIL", Name);
}
if (!isValidIntrinsic(IntrinsicID)) {
return 0;
}
if (IntrinsicID != (AMDGPUIntrinsic::ID)Intrinsic::not_intrinsic) {
return IntrinsicID;
}
return 0;
}
bool
AMDILIntrinsicInfo::isOverloaded(unsigned id) const
{
// Overload Table
#define GET_INTRINSIC_OVERLOAD_TABLE
#include "AMDILGenIntrinsics.inc"
#undef GET_INTRINSIC_OVERLOAD_TABLE
}
/// This defines the "getAttributes(ID id)" method.
#define GET_INTRINSIC_ATTRIBUTES
#include "AMDILGenIntrinsics.inc"
#undef GET_INTRINSIC_ATTRIBUTES
Function*
AMDILIntrinsicInfo::getDeclaration(Module *M, unsigned IntrID,
Type **Tys,
unsigned numTys) const
{
assert(!"Not implemented");
}
/// Because the code generator has to support different SC versions,
/// this function is added to check that the intrinsic being used
/// is actually valid. In the case where it isn't valid, the
/// function call is not translated into an intrinsic and the
/// fall back software emulated path should pick up the result.
bool
AMDILIntrinsicInfo::isValidIntrinsic(unsigned int IntrID) const
{
const AMDILSubtarget &STM = mTM->getSubtarget<AMDILSubtarget>();
switch (IntrID) {
default:
return true;
case AMDGPUIntrinsic::AMDIL_convert_f32_i32_rpi:
case AMDGPUIntrinsic::AMDIL_convert_f32_i32_flr:
case AMDGPUIntrinsic::AMDIL_convert_f32_f16_near:
case AMDGPUIntrinsic::AMDIL_convert_f32_f16_neg_inf:
case AMDGPUIntrinsic::AMDIL_convert_f32_f16_plus_inf:
return STM.calVersion() >= CAL_VERSION_SC_139;
};
}
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