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4951996d06
This should be all the low-level instruction selection needs to determine how to implement an operation, with the remaining context taken from the opcode (e.g. G_ADD vs G_FADD) or other flags not based on type (e.g. fast-math). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276158 91177308-0d34-0410-b5e6-96231b3b80d8
47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
//===-- llvm/CodeGen/GlobalISel/LowLevelType.cpp --------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file This file implements the more header-heavy bits of the LLT class to
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/// avoid polluting users' namespaces.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/LowLevelType.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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LLT::LLT(const Type &Ty) {
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if (auto VTy = dyn_cast<VectorType>(&Ty)) {
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ScalarSize = VTy->getElementType()->getPrimitiveSizeInBits();
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NumElements = VTy->getNumElements();
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Kind = NumElements == 1 ? Scalar : Vector;
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} else if (Ty.isSized()) {
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// Aggregates are no different from real scalars as far as GlobalISel is
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// concerned.
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Kind = Scalar;
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ScalarSize = Ty.getPrimitiveSizeInBits();
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NumElements = 1;
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} else {
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Kind = Unsized;
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ScalarSize = NumElements = 0;
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}
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}
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void LLT::print(raw_ostream &OS) const {
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if (isVector())
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OS << "<" << NumElements << " x s" << ScalarSize << ">";
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else if (isSized())
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OS << "s" << ScalarSize;
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else if (isValid())
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OS << "unsized";
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else
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llvm_unreachable("trying to print an invalid type");
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}
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