mirror of
https://github.com/RPCS3/llvm.git
synced 2025-04-06 15:21:37 +00:00
35c6dd2400
Summary: This will allow future patches to inspect the details of the LLT. The implementation is now split between the Support and CodeGen libraries to allow TableGen to use this class without introducing layering concerns. Thanks to Ahmed Bougacha for finding a reasonable way to avoid the layering issue and providing the version of this patch without that problem. The problem with the previous commit appears to have been that TableGen was including CodeGen/LowLevelType.h instead of Support/LowLevelTypeImpl.h. Reviewers: t.p.northover, qcolombet, rovka, aditya_nandakumar, ab, javed.absar Subscribers: arsenm, nhaehnle, mgorny, dberris, llvm-commits, kristof.beyls Differential Revision: https://reviews.llvm.org/D30046 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297241 91177308-0d34-0410-b5e6-96231b3b80d8
39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
//===-- llvm/CodeGen/LowLevelType.cpp -------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
/// \file This file implements the more header-heavy bits of the LLT class to
|
|
/// avoid polluting users' namespaces.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/CodeGen/LowLevelType.h"
|
|
#include "llvm/IR/DataLayout.h"
|
|
#include "llvm/IR/DerivedTypes.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
using namespace llvm;
|
|
|
|
LLT llvm::getLLTForType(Type &Ty, const DataLayout &DL) {
|
|
if (auto VTy = dyn_cast<VectorType>(&Ty)) {
|
|
auto NumElements = VTy->getNumElements();
|
|
auto ScalarSizeInBits = VTy->getElementType()->getPrimitiveSizeInBits();
|
|
if (NumElements == 1)
|
|
return LLT::scalar(ScalarSizeInBits);
|
|
return LLT::vector(NumElements, ScalarSizeInBits);
|
|
} else if (auto PTy = dyn_cast<PointerType>(&Ty)) {
|
|
return LLT::pointer(PTy->getAddressSpace(), DL.getTypeSizeInBits(&Ty));
|
|
} else if (Ty.isSized()) {
|
|
// Aggregates are no different from real scalars as far as GlobalISel is
|
|
// concerned.
|
|
auto SizeInBits = DL.getTypeSizeInBits(&Ty);
|
|
assert(SizeInBits != 0 && "invalid zero-sized type");
|
|
return LLT::scalar(SizeInBits);
|
|
}
|
|
return LLT();
|
|
}
|