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//===- SemaSPIRV.cpp - Semantic Analysis for SPIRV constructs--------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// This implements Semantic Analysis for SPIRV constructs.
//===----------------------------------------------------------------------===//
#include "clang/Sema/SemaSPIRV.h"
#include "clang/Basic/TargetBuiltins.h"
#include "clang/Sema/Sema.h"
namespace clang {
SemaSPIRV::SemaSPIRV(Sema &S) : SemaBase(S) {}
static bool CheckAllArgsHaveSameType(Sema *S, CallExpr *TheCall) {
assert(TheCall->getNumArgs() > 1);
QualType ArgTy0 = TheCall->getArg(0)->getType();
for (unsigned I = 1, N = TheCall->getNumArgs(); I < N; ++I) {
if (!S->getASTContext().hasSameUnqualifiedType(
ArgTy0, TheCall->getArg(I)->getType())) {
S->Diag(TheCall->getBeginLoc(), diag::err_vec_builtin_incompatible_vector)
<< TheCall->getDirectCallee() << /*useAllTerminology*/ true
<< SourceRange(TheCall->getArg(0)->getBeginLoc(),
TheCall->getArg(N - 1)->getEndLoc());
return true;
}
}
return false;
}
bool SemaSPIRV::CheckSPIRVBuiltinFunctionCall(unsigned BuiltinID,
CallExpr *TheCall) {
switch (BuiltinID) {
case SPIRV::BI__builtin_spirv_distance: {
if (SemaRef.checkArgCount(TheCall, 2))
return true;
ExprResult A = TheCall->getArg(0);
QualType ArgTyA = A.get()->getType();
auto *VTyA = ArgTyA->getAs<VectorType>();
if (VTyA == nullptr) {
SemaRef.Diag(A.get()->getBeginLoc(),
diag::err_typecheck_convert_incompatible)
<< ArgTyA
<< SemaRef.Context.getVectorType(ArgTyA, 2, VectorKind::Generic) << 1
<< 0 << 0;
return true;
}
ExprResult B = TheCall->getArg(1);
QualType ArgTyB = B.get()->getType();
auto *VTyB = ArgTyB->getAs<VectorType>();
if (VTyB == nullptr) {
SemaRef.Diag(A.get()->getBeginLoc(),
diag::err_typecheck_convert_incompatible)
<< ArgTyB
<< SemaRef.Context.getVectorType(ArgTyB, 2, VectorKind::Generic) << 1
<< 0 << 0;
return true;
}
QualType RetTy = VTyA->getElementType();
TheCall->setType(RetTy);
break;
}
case SPIRV::BI__builtin_spirv_length: {
if (SemaRef.checkArgCount(TheCall, 1))
return true;
ExprResult A = TheCall->getArg(0);
QualType ArgTyA = A.get()->getType();
auto *VTy = ArgTyA->getAs<VectorType>();
if (VTy == nullptr) {
SemaRef.Diag(A.get()->getBeginLoc(),
diag::err_typecheck_convert_incompatible)
<< ArgTyA
<< SemaRef.Context.getVectorType(ArgTyA, 2, VectorKind::Generic) << 1
<< 0 << 0;
return true;
}
QualType RetTy = VTy->getElementType();
TheCall->setType(RetTy);
break;
}
case SPIRV::BI__builtin_spirv_reflect: {
if (SemaRef.checkArgCount(TheCall, 2))
return true;
ExprResult A = TheCall->getArg(0);
QualType ArgTyA = A.get()->getType();
auto *VTyA = ArgTyA->getAs<VectorType>();
if (VTyA == nullptr) {
SemaRef.Diag(A.get()->getBeginLoc(),
diag::err_typecheck_convert_incompatible)
<< ArgTyA
<< SemaRef.Context.getVectorType(ArgTyA, 2, VectorKind::Generic) << 1
<< 0 << 0;
return true;
}
ExprResult B = TheCall->getArg(1);
QualType ArgTyB = B.get()->getType();
auto *VTyB = ArgTyB->getAs<VectorType>();
if (VTyB == nullptr) {
SemaRef.Diag(A.get()->getBeginLoc(),
diag::err_typecheck_convert_incompatible)
<< ArgTyB
<< SemaRef.Context.getVectorType(ArgTyB, 2, VectorKind::Generic) << 1
<< 0 << 0;
return true;
}
QualType RetTy = ArgTyA;
TheCall->setType(RetTy);
break;
}
case SPIRV::BI__builtin_spirv_smoothstep: {
if (SemaRef.checkArgCount(TheCall, 3))
return true;
// Check if first argument has floating representation
ExprResult A = TheCall->getArg(0);
QualType ArgTyA = A.get()->getType();
if (!ArgTyA->hasFloatingRepresentation()) {
SemaRef.Diag(A.get()->getBeginLoc(), diag::err_builtin_invalid_arg_type)
<< /* ordinal */ 1 << /* scalar or vector */ 5 << /* no int */ 0
<< /* fp */ 1 << ArgTyA;
return true;
}
if (CheckAllArgsHaveSameType(&SemaRef, TheCall))
return true;
QualType RetTy = ArgTyA;
TheCall->setType(RetTy);
break;
}
case SPIRV::BI__builtin_spirv_faceforward: {
if (SemaRef.checkArgCount(TheCall, 3))
return true;
// Check if first argument has floating representation
ExprResult A = TheCall->getArg(0);
QualType ArgTyA = A.get()->getType();
if (!ArgTyA->hasFloatingRepresentation()) {
SemaRef.Diag(A.get()->getBeginLoc(), diag::err_builtin_invalid_arg_type)
<< /* ordinal */ 1 << /* scalar or vector */ 5 << /* no int */ 0
<< /* fp */ 1 << ArgTyA;
return true;
}
if (CheckAllArgsHaveSameType(&SemaRef, TheCall))
return true;
QualType RetTy = ArgTyA;
TheCall->setType(RetTy);
break;
}
}
return false;
}
} // namespace clang
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