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TableGen had diagnostic printers sprinkled about in a few places. Pull them together into a single location in Error.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133568 91177308-0d34-0410-b5e6-96231b3b80d8
1559 lines
45 KiB
C++
1559 lines
45 KiB
C++
//===- NeonEmitter.cpp - Generate arm_neon.h for use with clang -*- C++ -*-===//
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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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// This tablegen backend is responsible for emitting arm_neon.h, which includes
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// a declaration and definition of each function specified by the ARM NEON
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// compiler interface. See ARM document DUI0348B.
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//
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// Each NEON instruction is implemented in terms of 1 or more functions which
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// are suffixed with the element type of the input vectors. Functions may be
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// implemented in terms of generic vector operations such as +, *, -, etc. or
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// by calling a __builtin_-prefixed function which will be handled by clang's
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// CodeGen library.
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//
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// Additional validation code can be generated by this file when runHeader() is
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// called, rather than the normal run() entry point. A complete set of tests
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// for Neon intrinsics can be generated by calling the runTests() entry point.
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//
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//===----------------------------------------------------------------------===//
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#include "NeonEmitter.h"
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#include "Error.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringExtras.h"
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#include <string>
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using namespace llvm;
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/// ParseTypes - break down a string such as "fQf" into a vector of StringRefs,
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/// which each StringRef representing a single type declared in the string.
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/// for "fQf" we would end up with 2 StringRefs, "f", and "Qf", representing
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/// 2xfloat and 4xfloat respectively.
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static void ParseTypes(Record *r, std::string &s,
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SmallVectorImpl<StringRef> &TV) {
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const char *data = s.data();
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int len = 0;
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for (unsigned i = 0, e = s.size(); i != e; ++i, ++len) {
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if (data[len] == 'P' || data[len] == 'Q' || data[len] == 'U')
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continue;
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switch (data[len]) {
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case 'c':
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case 's':
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case 'i':
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case 'l':
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case 'h':
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case 'f':
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break;
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default:
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throw TGError(r->getLoc(),
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"Unexpected letter: " + std::string(data + len, 1));
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break;
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}
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TV.push_back(StringRef(data, len + 1));
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data += len + 1;
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len = -1;
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}
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}
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/// Widen - Convert a type code into the next wider type. char -> short,
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/// short -> int, etc.
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static char Widen(const char t) {
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switch (t) {
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case 'c':
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return 's';
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case 's':
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return 'i';
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case 'i':
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return 'l';
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case 'h':
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return 'f';
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default: throw "unhandled type in widen!";
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}
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return '\0';
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}
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/// Narrow - Convert a type code into the next smaller type. short -> char,
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/// float -> half float, etc.
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static char Narrow(const char t) {
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switch (t) {
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case 's':
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return 'c';
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case 'i':
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return 's';
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case 'l':
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return 'i';
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case 'f':
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return 'h';
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default: throw "unhandled type in narrow!";
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}
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return '\0';
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}
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/// For a particular StringRef, return the base type code, and whether it has
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/// the quad-vector, polynomial, or unsigned modifiers set.
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static char ClassifyType(StringRef ty, bool &quad, bool &poly, bool &usgn) {
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unsigned off = 0;
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// remember quad.
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if (ty[off] == 'Q') {
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quad = true;
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++off;
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}
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// remember poly.
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if (ty[off] == 'P') {
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poly = true;
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++off;
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}
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// remember unsigned.
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if (ty[off] == 'U') {
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usgn = true;
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++off;
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}
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// base type to get the type string for.
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return ty[off];
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}
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/// ModType - Transform a type code and its modifiers based on a mod code. The
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/// mod code definitions may be found at the top of arm_neon.td.
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static char ModType(const char mod, char type, bool &quad, bool &poly,
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bool &usgn, bool &scal, bool &cnst, bool &pntr) {
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switch (mod) {
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case 't':
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if (poly) {
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poly = false;
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usgn = true;
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}
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break;
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case 'u':
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usgn = true;
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poly = false;
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if (type == 'f')
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type = 'i';
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break;
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case 'x':
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usgn = false;
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poly = false;
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if (type == 'f')
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type = 'i';
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break;
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case 'f':
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if (type == 'h')
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quad = true;
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type = 'f';
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usgn = false;
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break;
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case 'g':
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quad = false;
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break;
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case 'w':
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type = Widen(type);
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quad = true;
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break;
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case 'n':
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type = Widen(type);
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break;
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case 'i':
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type = 'i';
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scal = true;
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break;
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case 'l':
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type = 'l';
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scal = true;
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usgn = true;
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break;
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case 's':
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case 'a':
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scal = true;
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break;
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case 'k':
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quad = true;
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break;
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case 'c':
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cnst = true;
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case 'p':
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pntr = true;
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scal = true;
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break;
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case 'h':
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type = Narrow(type);
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if (type == 'h')
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quad = false;
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break;
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case 'e':
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type = Narrow(type);
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usgn = true;
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break;
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default:
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break;
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}
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return type;
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}
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/// TypeString - for a modifier and type, generate the name of the typedef for
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/// that type. QUc -> uint8x8_t.
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static std::string TypeString(const char mod, StringRef typestr) {
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bool quad = false;
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bool poly = false;
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bool usgn = false;
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bool scal = false;
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bool cnst = false;
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bool pntr = false;
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if (mod == 'v')
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return "void";
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if (mod == 'i')
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return "int";
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// base type to get the type string for.
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char type = ClassifyType(typestr, quad, poly, usgn);
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// Based on the modifying character, change the type and width if necessary.
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type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr);
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SmallString<128> s;
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if (usgn)
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s.push_back('u');
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switch (type) {
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case 'c':
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s += poly ? "poly8" : "int8";
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if (scal)
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break;
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s += quad ? "x16" : "x8";
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break;
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case 's':
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s += poly ? "poly16" : "int16";
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if (scal)
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break;
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s += quad ? "x8" : "x4";
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break;
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case 'i':
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s += "int32";
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if (scal)
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break;
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s += quad ? "x4" : "x2";
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break;
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case 'l':
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s += "int64";
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if (scal)
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break;
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s += quad ? "x2" : "x1";
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break;
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case 'h':
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s += "float16";
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if (scal)
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break;
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s += quad ? "x8" : "x4";
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break;
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case 'f':
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s += "float32";
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if (scal)
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break;
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s += quad ? "x4" : "x2";
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break;
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default:
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throw "unhandled type!";
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break;
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}
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if (mod == '2')
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s += "x2";
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if (mod == '3')
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s += "x3";
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if (mod == '4')
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s += "x4";
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// Append _t, finishing the type string typedef type.
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s += "_t";
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if (cnst)
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s += " const";
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if (pntr)
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s += " *";
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return s.str();
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}
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/// BuiltinTypeString - for a modifier and type, generate the clang
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/// BuiltinsARM.def prototype code for the function. See the top of clang's
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/// Builtins.def for a description of the type strings.
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static std::string BuiltinTypeString(const char mod, StringRef typestr,
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ClassKind ck, bool ret) {
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bool quad = false;
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bool poly = false;
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bool usgn = false;
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bool scal = false;
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bool cnst = false;
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bool pntr = false;
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if (mod == 'v')
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return "v"; // void
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if (mod == 'i')
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return "i"; // int
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// base type to get the type string for.
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char type = ClassifyType(typestr, quad, poly, usgn);
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// Based on the modifying character, change the type and width if necessary.
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type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr);
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// All pointers are void* pointers. Change type to 'v' now.
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if (pntr) {
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usgn = false;
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poly = false;
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type = 'v';
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}
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// Treat half-float ('h') types as unsigned short ('s') types.
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if (type == 'h') {
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type = 's';
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usgn = true;
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}
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usgn = usgn | poly | ((ck == ClassI || ck == ClassW) && scal && type != 'f');
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if (scal) {
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SmallString<128> s;
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if (usgn)
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s.push_back('U');
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else if (type == 'c')
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s.push_back('S'); // make chars explicitly signed
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if (type == 'l') // 64-bit long
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s += "LLi";
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else
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s.push_back(type);
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if (cnst)
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s.push_back('C');
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if (pntr)
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s.push_back('*');
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return s.str();
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}
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// Since the return value must be one type, return a vector type of the
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// appropriate width which we will bitcast. An exception is made for
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// returning structs of 2, 3, or 4 vectors which are returned in a sret-like
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// fashion, storing them to a pointer arg.
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if (ret) {
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if (mod >= '2' && mod <= '4')
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return "vv*"; // void result with void* first argument
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if (mod == 'f' || (ck != ClassB && type == 'f'))
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return quad ? "V4f" : "V2f";
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if (ck != ClassB && type == 's')
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return quad ? "V8s" : "V4s";
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if (ck != ClassB && type == 'i')
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return quad ? "V4i" : "V2i";
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if (ck != ClassB && type == 'l')
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return quad ? "V2LLi" : "V1LLi";
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return quad ? "V16Sc" : "V8Sc";
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}
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// Non-return array types are passed as individual vectors.
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if (mod == '2')
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return quad ? "V16ScV16Sc" : "V8ScV8Sc";
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if (mod == '3')
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return quad ? "V16ScV16ScV16Sc" : "V8ScV8ScV8Sc";
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if (mod == '4')
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return quad ? "V16ScV16ScV16ScV16Sc" : "V8ScV8ScV8ScV8Sc";
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if (mod == 'f' || (ck != ClassB && type == 'f'))
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return quad ? "V4f" : "V2f";
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if (ck != ClassB && type == 's')
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return quad ? "V8s" : "V4s";
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if (ck != ClassB && type == 'i')
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return quad ? "V4i" : "V2i";
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if (ck != ClassB && type == 'l')
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return quad ? "V2LLi" : "V1LLi";
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return quad ? "V16Sc" : "V8Sc";
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}
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/// MangleName - Append a type or width suffix to a base neon function name,
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/// and insert a 'q' in the appropriate location if the operation works on
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/// 128b rather than 64b. E.g. turn "vst2_lane" into "vst2q_lane_f32", etc.
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static std::string MangleName(const std::string &name, StringRef typestr,
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ClassKind ck) {
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if (name == "vcvt_f32_f16")
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return name;
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bool quad = false;
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bool poly = false;
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bool usgn = false;
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char type = ClassifyType(typestr, quad, poly, usgn);
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std::string s = name;
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switch (type) {
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case 'c':
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switch (ck) {
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case ClassS: s += poly ? "_p8" : usgn ? "_u8" : "_s8"; break;
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case ClassI: s += "_i8"; break;
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case ClassW: s += "_8"; break;
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default: break;
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}
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break;
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case 's':
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switch (ck) {
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case ClassS: s += poly ? "_p16" : usgn ? "_u16" : "_s16"; break;
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case ClassI: s += "_i16"; break;
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case ClassW: s += "_16"; break;
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default: break;
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}
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break;
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case 'i':
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switch (ck) {
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case ClassS: s += usgn ? "_u32" : "_s32"; break;
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case ClassI: s += "_i32"; break;
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case ClassW: s += "_32"; break;
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default: break;
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}
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break;
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case 'l':
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switch (ck) {
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case ClassS: s += usgn ? "_u64" : "_s64"; break;
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case ClassI: s += "_i64"; break;
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case ClassW: s += "_64"; break;
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default: break;
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}
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break;
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case 'h':
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switch (ck) {
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case ClassS:
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case ClassI: s += "_f16"; break;
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case ClassW: s += "_16"; break;
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default: break;
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}
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break;
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case 'f':
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switch (ck) {
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case ClassS:
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case ClassI: s += "_f32"; break;
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case ClassW: s += "_32"; break;
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default: break;
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}
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break;
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default:
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throw "unhandled type!";
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break;
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}
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if (ck == ClassB)
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s += "_v";
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// Insert a 'q' before the first '_' character so that it ends up before
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// _lane or _n on vector-scalar operations.
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if (quad) {
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size_t pos = s.find('_');
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s = s.insert(pos, "q");
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}
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return s;
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}
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/// UseMacro - Examine the prototype string to determine if the intrinsic
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/// should be defined as a preprocessor macro instead of an inline function.
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static bool UseMacro(const std::string &proto) {
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// If this builtin takes an immediate argument, we need to #define it rather
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// than use a standard declaration, so that SemaChecking can range check
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// the immediate passed by the user.
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if (proto.find('i') != std::string::npos)
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return true;
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|
|
// Pointer arguments need to use macros to avoid hiding aligned attributes
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// from the pointer type.
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if (proto.find('p') != std::string::npos ||
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proto.find('c') != std::string::npos)
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return true;
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return false;
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}
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/// MacroArgUsedDirectly - Return true if argument i for an intrinsic that is
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/// defined as a macro should be accessed directly instead of being first
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/// assigned to a local temporary.
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static bool MacroArgUsedDirectly(const std::string &proto, unsigned i) {
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return (proto[i] == 'i' || proto[i] == 'p' || proto[i] == 'c');
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}
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|
// Generate the string "(argtype a, argtype b, ...)"
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static std::string GenArgs(const std::string &proto, StringRef typestr) {
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bool define = UseMacro(proto);
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char arg = 'a';
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std::string s;
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s += "(";
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for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
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if (define) {
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// Some macro arguments are used directly instead of being assigned
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// to local temporaries; prepend an underscore prefix to make their
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|
// names consistent with the local temporaries.
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if (MacroArgUsedDirectly(proto, i))
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s += "__";
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|
} else {
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s += TypeString(proto[i], typestr) + " __";
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}
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s.push_back(arg);
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if ((i + 1) < e)
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s += ", ";
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}
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s += ")";
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return s;
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}
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|
// Macro arguments are not type-checked like inline function arguments, so
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|
// assign them to local temporaries to get the right type checking.
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|
static std::string GenMacroLocals(const std::string &proto, StringRef typestr) {
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|
char arg = 'a';
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|
std::string s;
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|
bool generatedLocal = false;
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for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
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// Do not create a temporary for an immediate argument.
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|
// That would defeat the whole point of using a macro!
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|
if (proto[i] == 'i')
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continue;
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generatedLocal = true;
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|
|
// For other (non-immediate) arguments that are used directly, a local
|
|
// temporary is still needed to get the correct type checking, even though
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|
// that temporary is not used for anything.
|
|
if (MacroArgUsedDirectly(proto, i)) {
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|
s += TypeString(proto[i], typestr) + " __";
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|
s.push_back(arg);
|
|
s += "_ = (__";
|
|
s.push_back(arg);
|
|
s += "); (void)__";
|
|
s.push_back(arg);
|
|
s += "_; ";
|
|
continue;
|
|
}
|
|
|
|
s += TypeString(proto[i], typestr) + " __";
|
|
s.push_back(arg);
|
|
s += " = (";
|
|
s.push_back(arg);
|
|
s += "); ";
|
|
}
|
|
|
|
if (generatedLocal)
|
|
s += "\\\n ";
|
|
return s;
|
|
}
|
|
|
|
// Use the vmovl builtin to sign-extend or zero-extend a vector.
|
|
static std::string Extend(StringRef typestr, const std::string &a) {
|
|
std::string s;
|
|
s = MangleName("vmovl", typestr, ClassS);
|
|
s += "(" + a + ")";
|
|
return s;
|
|
}
|
|
|
|
static std::string Duplicate(unsigned nElts, StringRef typestr,
|
|
const std::string &a) {
|
|
std::string s;
|
|
|
|
s = "(" + TypeString('d', typestr) + "){ ";
|
|
for (unsigned i = 0; i != nElts; ++i) {
|
|
s += a;
|
|
if ((i + 1) < nElts)
|
|
s += ", ";
|
|
}
|
|
s += " }";
|
|
|
|
return s;
|
|
}
|
|
|
|
static std::string SplatLane(unsigned nElts, const std::string &vec,
|
|
const std::string &lane) {
|
|
std::string s = "__builtin_shufflevector(" + vec + ", " + vec;
|
|
for (unsigned i = 0; i < nElts; ++i)
|
|
s += ", " + lane;
|
|
s += ")";
|
|
return s;
|
|
}
|
|
|
|
static unsigned GetNumElements(StringRef typestr, bool &quad) {
|
|
quad = false;
|
|
bool dummy = false;
|
|
char type = ClassifyType(typestr, quad, dummy, dummy);
|
|
unsigned nElts = 0;
|
|
switch (type) {
|
|
case 'c': nElts = 8; break;
|
|
case 's': nElts = 4; break;
|
|
case 'i': nElts = 2; break;
|
|
case 'l': nElts = 1; break;
|
|
case 'h': nElts = 4; break;
|
|
case 'f': nElts = 2; break;
|
|
default:
|
|
throw "unhandled type!";
|
|
break;
|
|
}
|
|
if (quad) nElts <<= 1;
|
|
return nElts;
|
|
}
|
|
|
|
// Generate the definition for this intrinsic, e.g. "a + b" for OpAdd.
|
|
static std::string GenOpString(OpKind op, const std::string &proto,
|
|
StringRef typestr) {
|
|
bool quad;
|
|
unsigned nElts = GetNumElements(typestr, quad);
|
|
bool define = UseMacro(proto);
|
|
|
|
std::string ts = TypeString(proto[0], typestr);
|
|
std::string s;
|
|
if (!define) {
|
|
s = "return ";
|
|
}
|
|
|
|
switch(op) {
|
|
case OpAdd:
|
|
s += "__a + __b;";
|
|
break;
|
|
case OpAddl:
|
|
s += Extend(typestr, "__a") + " + " + Extend(typestr, "__b") + ";";
|
|
break;
|
|
case OpAddw:
|
|
s += "__a + " + Extend(typestr, "__b") + ";";
|
|
break;
|
|
case OpSub:
|
|
s += "__a - __b;";
|
|
break;
|
|
case OpSubl:
|
|
s += Extend(typestr, "__a") + " - " + Extend(typestr, "__b") + ";";
|
|
break;
|
|
case OpSubw:
|
|
s += "__a - " + Extend(typestr, "__b") + ";";
|
|
break;
|
|
case OpMulN:
|
|
s += "__a * " + Duplicate(nElts, typestr, "__b") + ";";
|
|
break;
|
|
case OpMulLane:
|
|
s += "__a * " + SplatLane(nElts, "__b", "__c") + ";";
|
|
break;
|
|
case OpMul:
|
|
s += "__a * __b;";
|
|
break;
|
|
case OpMullLane:
|
|
s += MangleName("vmull", typestr, ClassS) + "(__a, " +
|
|
SplatLane(nElts, "__b", "__c") + ");";
|
|
break;
|
|
case OpMlaN:
|
|
s += "__a + (__b * " + Duplicate(nElts, typestr, "__c") + ");";
|
|
break;
|
|
case OpMlaLane:
|
|
s += "__a + (__b * " + SplatLane(nElts, "__c", "__d") + ");";
|
|
break;
|
|
case OpMla:
|
|
s += "__a + (__b * __c);";
|
|
break;
|
|
case OpMlalN:
|
|
s += "__a + " + MangleName("vmull", typestr, ClassS) + "(__b, " +
|
|
Duplicate(nElts, typestr, "__c") + ");";
|
|
break;
|
|
case OpMlalLane:
|
|
s += "__a + " + MangleName("vmull", typestr, ClassS) + "(__b, " +
|
|
SplatLane(nElts, "__c", "__d") + ");";
|
|
break;
|
|
case OpMlal:
|
|
s += "__a + " + MangleName("vmull", typestr, ClassS) + "(__b, __c);";
|
|
break;
|
|
case OpMlsN:
|
|
s += "__a - (__b * " + Duplicate(nElts, typestr, "__c") + ");";
|
|
break;
|
|
case OpMlsLane:
|
|
s += "__a - (__b * " + SplatLane(nElts, "__c", "__d") + ");";
|
|
break;
|
|
case OpMls:
|
|
s += "__a - (__b * __c);";
|
|
break;
|
|
case OpMlslN:
|
|
s += "__a - " + MangleName("vmull", typestr, ClassS) + "(__b, " +
|
|
Duplicate(nElts, typestr, "__c") + ");";
|
|
break;
|
|
case OpMlslLane:
|
|
s += "__a - " + MangleName("vmull", typestr, ClassS) + "(__b, " +
|
|
SplatLane(nElts, "__c", "__d") + ");";
|
|
break;
|
|
case OpMlsl:
|
|
s += "__a - " + MangleName("vmull", typestr, ClassS) + "(__b, __c);";
|
|
break;
|
|
case OpQDMullLane:
|
|
s += MangleName("vqdmull", typestr, ClassS) + "(__a, " +
|
|
SplatLane(nElts, "__b", "__c") + ");";
|
|
break;
|
|
case OpQDMlalLane:
|
|
s += MangleName("vqdmlal", typestr, ClassS) + "(__a, __b, " +
|
|
SplatLane(nElts, "__c", "__d") + ");";
|
|
break;
|
|
case OpQDMlslLane:
|
|
s += MangleName("vqdmlsl", typestr, ClassS) + "(__a, __b, " +
|
|
SplatLane(nElts, "__c", "__d") + ");";
|
|
break;
|
|
case OpQDMulhLane:
|
|
s += MangleName("vqdmulh", typestr, ClassS) + "(__a, " +
|
|
SplatLane(nElts, "__b", "__c") + ");";
|
|
break;
|
|
case OpQRDMulhLane:
|
|
s += MangleName("vqrdmulh", typestr, ClassS) + "(__a, " +
|
|
SplatLane(nElts, "__b", "__c") + ");";
|
|
break;
|
|
case OpEq:
|
|
s += "(" + ts + ")(__a == __b);";
|
|
break;
|
|
case OpGe:
|
|
s += "(" + ts + ")(__a >= __b);";
|
|
break;
|
|
case OpLe:
|
|
s += "(" + ts + ")(__a <= __b);";
|
|
break;
|
|
case OpGt:
|
|
s += "(" + ts + ")(__a > __b);";
|
|
break;
|
|
case OpLt:
|
|
s += "(" + ts + ")(__a < __b);";
|
|
break;
|
|
case OpNeg:
|
|
s += " -__a;";
|
|
break;
|
|
case OpNot:
|
|
s += " ~__a;";
|
|
break;
|
|
case OpAnd:
|
|
s += "__a & __b;";
|
|
break;
|
|
case OpOr:
|
|
s += "__a | __b;";
|
|
break;
|
|
case OpXor:
|
|
s += "__a ^ __b;";
|
|
break;
|
|
case OpAndNot:
|
|
s += "__a & ~__b;";
|
|
break;
|
|
case OpOrNot:
|
|
s += "__a | ~__b;";
|
|
break;
|
|
case OpCast:
|
|
s += "(" + ts + ")__a;";
|
|
break;
|
|
case OpConcat:
|
|
s += "(" + ts + ")__builtin_shufflevector((int64x1_t)__a";
|
|
s += ", (int64x1_t)__b, 0, 1);";
|
|
break;
|
|
case OpHi:
|
|
s += "(" + ts +
|
|
")__builtin_shufflevector((int64x2_t)__a, (int64x2_t)__a, 1);";
|
|
break;
|
|
case OpLo:
|
|
s += "(" + ts +
|
|
")__builtin_shufflevector((int64x2_t)__a, (int64x2_t)__a, 0);";
|
|
break;
|
|
case OpDup:
|
|
s += Duplicate(nElts, typestr, "__a") + ";";
|
|
break;
|
|
case OpDupLane:
|
|
s += SplatLane(nElts, "__a", "__b") + ";";
|
|
break;
|
|
case OpSelect:
|
|
// ((0 & 1) | (~0 & 2))
|
|
s += "(" + ts + ")";
|
|
ts = TypeString(proto[1], typestr);
|
|
s += "((__a & (" + ts + ")__b) | ";
|
|
s += "(~__a & (" + ts + ")__c));";
|
|
break;
|
|
case OpRev16:
|
|
s += "__builtin_shufflevector(__a, __a";
|
|
for (unsigned i = 2; i <= nElts; i += 2)
|
|
for (unsigned j = 0; j != 2; ++j)
|
|
s += ", " + utostr(i - j - 1);
|
|
s += ");";
|
|
break;
|
|
case OpRev32: {
|
|
unsigned WordElts = nElts >> (1 + (int)quad);
|
|
s += "__builtin_shufflevector(__a, __a";
|
|
for (unsigned i = WordElts; i <= nElts; i += WordElts)
|
|
for (unsigned j = 0; j != WordElts; ++j)
|
|
s += ", " + utostr(i - j - 1);
|
|
s += ");";
|
|
break;
|
|
}
|
|
case OpRev64: {
|
|
unsigned DblWordElts = nElts >> (int)quad;
|
|
s += "__builtin_shufflevector(__a, __a";
|
|
for (unsigned i = DblWordElts; i <= nElts; i += DblWordElts)
|
|
for (unsigned j = 0; j != DblWordElts; ++j)
|
|
s += ", " + utostr(i - j - 1);
|
|
s += ");";
|
|
break;
|
|
}
|
|
case OpAbdl: {
|
|
std::string abd = MangleName("vabd", typestr, ClassS) + "(__a, __b)";
|
|
if (typestr[0] != 'U') {
|
|
// vabd results are always unsigned and must be zero-extended.
|
|
std::string utype = "U" + typestr.str();
|
|
s += "(" + TypeString(proto[0], typestr) + ")";
|
|
abd = "(" + TypeString('d', utype) + ")" + abd;
|
|
s += Extend(utype, abd) + ";";
|
|
} else {
|
|
s += Extend(typestr, abd) + ";";
|
|
}
|
|
break;
|
|
}
|
|
case OpAba:
|
|
s += "__a + " + MangleName("vabd", typestr, ClassS) + "(__b, __c);";
|
|
break;
|
|
case OpAbal: {
|
|
s += "__a + ";
|
|
std::string abd = MangleName("vabd", typestr, ClassS) + "(__b, __c)";
|
|
if (typestr[0] != 'U') {
|
|
// vabd results are always unsigned and must be zero-extended.
|
|
std::string utype = "U" + typestr.str();
|
|
s += "(" + TypeString(proto[0], typestr) + ")";
|
|
abd = "(" + TypeString('d', utype) + ")" + abd;
|
|
s += Extend(utype, abd) + ";";
|
|
} else {
|
|
s += Extend(typestr, abd) + ";";
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
throw "unknown OpKind!";
|
|
break;
|
|
}
|
|
return s;
|
|
}
|
|
|
|
static unsigned GetNeonEnum(const std::string &proto, StringRef typestr) {
|
|
unsigned mod = proto[0];
|
|
unsigned ret = 0;
|
|
|
|
if (mod == 'v' || mod == 'f')
|
|
mod = proto[1];
|
|
|
|
bool quad = false;
|
|
bool poly = false;
|
|
bool usgn = false;
|
|
bool scal = false;
|
|
bool cnst = false;
|
|
bool pntr = false;
|
|
|
|
// Base type to get the type string for.
|
|
char type = ClassifyType(typestr, quad, poly, usgn);
|
|
|
|
// Based on the modifying character, change the type and width if necessary.
|
|
type = ModType(mod, type, quad, poly, usgn, scal, cnst, pntr);
|
|
|
|
if (usgn)
|
|
ret |= 0x08;
|
|
if (quad && proto[1] != 'g')
|
|
ret |= 0x10;
|
|
|
|
switch (type) {
|
|
case 'c':
|
|
ret |= poly ? 5 : 0;
|
|
break;
|
|
case 's':
|
|
ret |= poly ? 6 : 1;
|
|
break;
|
|
case 'i':
|
|
ret |= 2;
|
|
break;
|
|
case 'l':
|
|
ret |= 3;
|
|
break;
|
|
case 'h':
|
|
ret |= 7;
|
|
break;
|
|
case 'f':
|
|
ret |= 4;
|
|
break;
|
|
default:
|
|
throw "unhandled type!";
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
// Generate the definition for this intrinsic, e.g. __builtin_neon_cls(a)
|
|
static std::string GenBuiltin(const std::string &name, const std::string &proto,
|
|
StringRef typestr, ClassKind ck) {
|
|
std::string s;
|
|
|
|
// If this builtin returns a struct 2, 3, or 4 vectors, pass it as an implicit
|
|
// sret-like argument.
|
|
bool sret = (proto[0] >= '2' && proto[0] <= '4');
|
|
|
|
bool define = UseMacro(proto);
|
|
|
|
// Check if the prototype has a scalar operand with the type of the vector
|
|
// elements. If not, bitcasting the args will take care of arg checking.
|
|
// The actual signedness etc. will be taken care of with special enums.
|
|
if (proto.find('s') == std::string::npos)
|
|
ck = ClassB;
|
|
|
|
if (proto[0] != 'v') {
|
|
std::string ts = TypeString(proto[0], typestr);
|
|
|
|
if (define) {
|
|
if (sret)
|
|
s += ts + " r; ";
|
|
else
|
|
s += "(" + ts + ")";
|
|
} else if (sret) {
|
|
s += ts + " r; ";
|
|
} else {
|
|
s += "return (" + ts + ")";
|
|
}
|
|
}
|
|
|
|
bool splat = proto.find('a') != std::string::npos;
|
|
|
|
s += "__builtin_neon_";
|
|
if (splat) {
|
|
// Call the non-splat builtin: chop off the "_n" suffix from the name.
|
|
std::string vname(name, 0, name.size()-2);
|
|
s += MangleName(vname, typestr, ck);
|
|
} else {
|
|
s += MangleName(name, typestr, ck);
|
|
}
|
|
s += "(";
|
|
|
|
// Pass the address of the return variable as the first argument to sret-like
|
|
// builtins.
|
|
if (sret)
|
|
s += "&r, ";
|
|
|
|
char arg = 'a';
|
|
for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
|
|
std::string args = std::string(&arg, 1);
|
|
|
|
// Use the local temporaries instead of the macro arguments.
|
|
args = "__" + args;
|
|
|
|
bool argQuad = false;
|
|
bool argPoly = false;
|
|
bool argUsgn = false;
|
|
bool argScalar = false;
|
|
bool dummy = false;
|
|
char argType = ClassifyType(typestr, argQuad, argPoly, argUsgn);
|
|
argType = ModType(proto[i], argType, argQuad, argPoly, argUsgn, argScalar,
|
|
dummy, dummy);
|
|
|
|
// Handle multiple-vector values specially, emitting each subvector as an
|
|
// argument to the __builtin.
|
|
if (proto[i] >= '2' && proto[i] <= '4') {
|
|
// Check if an explicit cast is needed.
|
|
if (argType != 'c' || argPoly || argUsgn)
|
|
args = (argQuad ? "(int8x16_t)" : "(int8x8_t)") + args;
|
|
|
|
for (unsigned vi = 0, ve = proto[i] - '0'; vi != ve; ++vi) {
|
|
s += args + ".val[" + utostr(vi) + "]";
|
|
if ((vi + 1) < ve)
|
|
s += ", ";
|
|
}
|
|
if ((i + 1) < e)
|
|
s += ", ";
|
|
|
|
continue;
|
|
}
|
|
|
|
if (splat && (i + 1) == e)
|
|
args = Duplicate(GetNumElements(typestr, argQuad), typestr, args);
|
|
|
|
// Check if an explicit cast is needed.
|
|
if ((splat || !argScalar) &&
|
|
((ck == ClassB && argType != 'c') || argPoly || argUsgn)) {
|
|
std::string argTypeStr = "c";
|
|
if (ck != ClassB)
|
|
argTypeStr = argType;
|
|
if (argQuad)
|
|
argTypeStr = "Q" + argTypeStr;
|
|
args = "(" + TypeString('d', argTypeStr) + ")" + args;
|
|
}
|
|
|
|
s += args;
|
|
if ((i + 1) < e)
|
|
s += ", ";
|
|
}
|
|
|
|
// Extra constant integer to hold type class enum for this function, e.g. s8
|
|
if (ck == ClassB)
|
|
s += ", " + utostr(GetNeonEnum(proto, typestr));
|
|
|
|
s += ");";
|
|
|
|
if (proto[0] != 'v' && sret) {
|
|
if (define)
|
|
s += " r;";
|
|
else
|
|
s += " return r;";
|
|
}
|
|
return s;
|
|
}
|
|
|
|
static std::string GenBuiltinDef(const std::string &name,
|
|
const std::string &proto,
|
|
StringRef typestr, ClassKind ck) {
|
|
std::string s("BUILTIN(__builtin_neon_");
|
|
|
|
// If all types are the same size, bitcasting the args will take care
|
|
// of arg checking. The actual signedness etc. will be taken care of with
|
|
// special enums.
|
|
if (proto.find('s') == std::string::npos)
|
|
ck = ClassB;
|
|
|
|
s += MangleName(name, typestr, ck);
|
|
s += ", \"";
|
|
|
|
for (unsigned i = 0, e = proto.size(); i != e; ++i)
|
|
s += BuiltinTypeString(proto[i], typestr, ck, i == 0);
|
|
|
|
// Extra constant integer to hold type class enum for this function, e.g. s8
|
|
if (ck == ClassB)
|
|
s += "i";
|
|
|
|
s += "\", \"n\")";
|
|
return s;
|
|
}
|
|
|
|
static std::string GenIntrinsic(const std::string &name,
|
|
const std::string &proto,
|
|
StringRef outTypeStr, StringRef inTypeStr,
|
|
OpKind kind, ClassKind classKind) {
|
|
assert(!proto.empty() && "");
|
|
bool define = UseMacro(proto);
|
|
std::string s;
|
|
|
|
// static always inline + return type
|
|
if (define)
|
|
s += "#define ";
|
|
else
|
|
s += "__ai " + TypeString(proto[0], outTypeStr) + " ";
|
|
|
|
// Function name with type suffix
|
|
std::string mangledName = MangleName(name, outTypeStr, ClassS);
|
|
if (outTypeStr != inTypeStr) {
|
|
// If the input type is different (e.g., for vreinterpret), append a suffix
|
|
// for the input type. String off a "Q" (quad) prefix so that MangleName
|
|
// does not insert another "q" in the name.
|
|
unsigned typeStrOff = (inTypeStr[0] == 'Q' ? 1 : 0);
|
|
StringRef inTypeNoQuad = inTypeStr.substr(typeStrOff);
|
|
mangledName = MangleName(mangledName, inTypeNoQuad, ClassS);
|
|
}
|
|
s += mangledName;
|
|
|
|
// Function arguments
|
|
s += GenArgs(proto, inTypeStr);
|
|
|
|
// Definition.
|
|
if (define) {
|
|
s += " __extension__ ({ \\\n ";
|
|
s += GenMacroLocals(proto, inTypeStr);
|
|
} else {
|
|
s += " { \\\n ";
|
|
}
|
|
|
|
if (kind != OpNone)
|
|
s += GenOpString(kind, proto, outTypeStr);
|
|
else
|
|
s += GenBuiltin(name, proto, outTypeStr, classKind);
|
|
if (define)
|
|
s += " })";
|
|
else
|
|
s += " }";
|
|
s += "\n";
|
|
return s;
|
|
}
|
|
|
|
/// run - Read the records in arm_neon.td and output arm_neon.h. arm_neon.h
|
|
/// is comprised of type definitions and function declarations.
|
|
void NeonEmitter::run(raw_ostream &OS) {
|
|
OS <<
|
|
"/*===---- arm_neon.h - ARM Neon intrinsics ------------------------------"
|
|
"---===\n"
|
|
" *\n"
|
|
" * Permission is hereby granted, free of charge, to any person obtaining "
|
|
"a copy\n"
|
|
" * of this software and associated documentation files (the \"Software\"),"
|
|
" to deal\n"
|
|
" * in the Software without restriction, including without limitation the "
|
|
"rights\n"
|
|
" * to use, copy, modify, merge, publish, distribute, sublicense, "
|
|
"and/or sell\n"
|
|
" * copies of the Software, and to permit persons to whom the Software is\n"
|
|
" * furnished to do so, subject to the following conditions:\n"
|
|
" *\n"
|
|
" * The above copyright notice and this permission notice shall be "
|
|
"included in\n"
|
|
" * all copies or substantial portions of the Software.\n"
|
|
" *\n"
|
|
" * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, "
|
|
"EXPRESS OR\n"
|
|
" * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF "
|
|
"MERCHANTABILITY,\n"
|
|
" * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT "
|
|
"SHALL THE\n"
|
|
" * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR "
|
|
"OTHER\n"
|
|
" * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, "
|
|
"ARISING FROM,\n"
|
|
" * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER "
|
|
"DEALINGS IN\n"
|
|
" * THE SOFTWARE.\n"
|
|
" *\n"
|
|
" *===--------------------------------------------------------------------"
|
|
"---===\n"
|
|
" */\n\n";
|
|
|
|
OS << "#ifndef __ARM_NEON_H\n";
|
|
OS << "#define __ARM_NEON_H\n\n";
|
|
|
|
OS << "#ifndef __ARM_NEON__\n";
|
|
OS << "#error \"NEON support not enabled\"\n";
|
|
OS << "#endif\n\n";
|
|
|
|
OS << "#include <stdint.h>\n\n";
|
|
|
|
// Emit NEON-specific scalar typedefs.
|
|
OS << "typedef float float32_t;\n";
|
|
OS << "typedef int8_t poly8_t;\n";
|
|
OS << "typedef int16_t poly16_t;\n";
|
|
OS << "typedef uint16_t float16_t;\n";
|
|
|
|
// Emit Neon vector typedefs.
|
|
std::string TypedefTypes("cQcsQsiQilQlUcQUcUsQUsUiQUiUlQUlhQhfQfPcQPcPsQPs");
|
|
SmallVector<StringRef, 24> TDTypeVec;
|
|
ParseTypes(0, TypedefTypes, TDTypeVec);
|
|
|
|
// Emit vector typedefs.
|
|
for (unsigned i = 0, e = TDTypeVec.size(); i != e; ++i) {
|
|
bool dummy, quad = false, poly = false;
|
|
(void) ClassifyType(TDTypeVec[i], quad, poly, dummy);
|
|
if (poly)
|
|
OS << "typedef __attribute__((neon_polyvector_type(";
|
|
else
|
|
OS << "typedef __attribute__((neon_vector_type(";
|
|
|
|
unsigned nElts = GetNumElements(TDTypeVec[i], quad);
|
|
OS << utostr(nElts) << "))) ";
|
|
if (nElts < 10)
|
|
OS << " ";
|
|
|
|
OS << TypeString('s', TDTypeVec[i]);
|
|
OS << " " << TypeString('d', TDTypeVec[i]) << ";\n";
|
|
}
|
|
OS << "\n";
|
|
|
|
// Emit struct typedefs.
|
|
for (unsigned vi = 2; vi != 5; ++vi) {
|
|
for (unsigned i = 0, e = TDTypeVec.size(); i != e; ++i) {
|
|
std::string ts = TypeString('d', TDTypeVec[i]);
|
|
std::string vs = TypeString('0' + vi, TDTypeVec[i]);
|
|
OS << "typedef struct " << vs << " {\n";
|
|
OS << " " << ts << " val";
|
|
OS << "[" << utostr(vi) << "]";
|
|
OS << ";\n} ";
|
|
OS << vs << ";\n\n";
|
|
}
|
|
}
|
|
|
|
OS << "#define __ai static __attribute__((__always_inline__))\n\n";
|
|
|
|
std::vector<Record*> RV = Records.getAllDerivedDefinitions("Inst");
|
|
|
|
// Emit vmovl, vmull and vabd intrinsics first so they can be used by other
|
|
// intrinsics. (Some of the saturating multiply instructions are also
|
|
// used to implement the corresponding "_lane" variants, but tablegen
|
|
// sorts the records into alphabetical order so that the "_lane" variants
|
|
// come after the intrinsics they use.)
|
|
emitIntrinsic(OS, Records.getDef("VMOVL"));
|
|
emitIntrinsic(OS, Records.getDef("VMULL"));
|
|
emitIntrinsic(OS, Records.getDef("VABD"));
|
|
|
|
for (unsigned i = 0, e = RV.size(); i != e; ++i) {
|
|
Record *R = RV[i];
|
|
if (R->getName() != "VMOVL" &&
|
|
R->getName() != "VMULL" &&
|
|
R->getName() != "VABD")
|
|
emitIntrinsic(OS, R);
|
|
}
|
|
|
|
OS << "#undef __ai\n\n";
|
|
OS << "#endif /* __ARM_NEON_H */\n";
|
|
}
|
|
|
|
/// emitIntrinsic - Write out the arm_neon.h header file definitions for the
|
|
/// intrinsics specified by record R.
|
|
void NeonEmitter::emitIntrinsic(raw_ostream &OS, Record *R) {
|
|
std::string name = R->getValueAsString("Name");
|
|
std::string Proto = R->getValueAsString("Prototype");
|
|
std::string Types = R->getValueAsString("Types");
|
|
|
|
SmallVector<StringRef, 16> TypeVec;
|
|
ParseTypes(R, Types, TypeVec);
|
|
|
|
OpKind kind = OpMap[R->getValueAsDef("Operand")->getName()];
|
|
|
|
ClassKind classKind = ClassNone;
|
|
if (R->getSuperClasses().size() >= 2)
|
|
classKind = ClassMap[R->getSuperClasses()[1]];
|
|
if (classKind == ClassNone && kind == OpNone)
|
|
throw TGError(R->getLoc(), "Builtin has no class kind");
|
|
|
|
for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
|
|
if (kind == OpReinterpret) {
|
|
bool outQuad = false;
|
|
bool dummy = false;
|
|
(void)ClassifyType(TypeVec[ti], outQuad, dummy, dummy);
|
|
for (unsigned srcti = 0, srcte = TypeVec.size();
|
|
srcti != srcte; ++srcti) {
|
|
bool inQuad = false;
|
|
(void)ClassifyType(TypeVec[srcti], inQuad, dummy, dummy);
|
|
if (srcti == ti || inQuad != outQuad)
|
|
continue;
|
|
OS << GenIntrinsic(name, Proto, TypeVec[ti], TypeVec[srcti],
|
|
OpCast, ClassS);
|
|
}
|
|
} else {
|
|
OS << GenIntrinsic(name, Proto, TypeVec[ti], TypeVec[ti],
|
|
kind, classKind);
|
|
}
|
|
}
|
|
OS << "\n";
|
|
}
|
|
|
|
static unsigned RangeFromType(const char mod, StringRef typestr) {
|
|
// base type to get the type string for.
|
|
bool quad = false, dummy = false;
|
|
char type = ClassifyType(typestr, quad, dummy, dummy);
|
|
type = ModType(mod, type, quad, dummy, dummy, dummy, dummy, dummy);
|
|
|
|
switch (type) {
|
|
case 'c':
|
|
return (8 << (int)quad) - 1;
|
|
case 'h':
|
|
case 's':
|
|
return (4 << (int)quad) - 1;
|
|
case 'f':
|
|
case 'i':
|
|
return (2 << (int)quad) - 1;
|
|
case 'l':
|
|
return (1 << (int)quad) - 1;
|
|
default:
|
|
throw "unhandled type!";
|
|
break;
|
|
}
|
|
assert(0 && "unreachable");
|
|
return 0;
|
|
}
|
|
|
|
/// runHeader - Emit a file with sections defining:
|
|
/// 1. the NEON section of BuiltinsARM.def.
|
|
/// 2. the SemaChecking code for the type overload checking.
|
|
/// 3. the SemaChecking code for validation of intrinsic immedate arguments.
|
|
void NeonEmitter::runHeader(raw_ostream &OS) {
|
|
std::vector<Record*> RV = Records.getAllDerivedDefinitions("Inst");
|
|
|
|
StringMap<OpKind> EmittedMap;
|
|
|
|
// Generate BuiltinsARM.def for NEON
|
|
OS << "#ifdef GET_NEON_BUILTINS\n";
|
|
for (unsigned i = 0, e = RV.size(); i != e; ++i) {
|
|
Record *R = RV[i];
|
|
OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
|
|
if (k != OpNone)
|
|
continue;
|
|
|
|
std::string Proto = R->getValueAsString("Prototype");
|
|
|
|
// Functions with 'a' (the splat code) in the type prototype should not get
|
|
// their own builtin as they use the non-splat variant.
|
|
if (Proto.find('a') != std::string::npos)
|
|
continue;
|
|
|
|
std::string Types = R->getValueAsString("Types");
|
|
SmallVector<StringRef, 16> TypeVec;
|
|
ParseTypes(R, Types, TypeVec);
|
|
|
|
if (R->getSuperClasses().size() < 2)
|
|
throw TGError(R->getLoc(), "Builtin has no class kind");
|
|
|
|
std::string name = R->getValueAsString("Name");
|
|
ClassKind ck = ClassMap[R->getSuperClasses()[1]];
|
|
|
|
for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
|
|
// Generate the BuiltinsARM.def declaration for this builtin, ensuring
|
|
// that each unique BUILTIN() macro appears only once in the output
|
|
// stream.
|
|
std::string bd = GenBuiltinDef(name, Proto, TypeVec[ti], ck);
|
|
if (EmittedMap.count(bd))
|
|
continue;
|
|
|
|
EmittedMap[bd] = OpNone;
|
|
OS << bd << "\n";
|
|
}
|
|
}
|
|
OS << "#endif\n\n";
|
|
|
|
// Generate the overloaded type checking code for SemaChecking.cpp
|
|
OS << "#ifdef GET_NEON_OVERLOAD_CHECK\n";
|
|
for (unsigned i = 0, e = RV.size(); i != e; ++i) {
|
|
Record *R = RV[i];
|
|
OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
|
|
if (k != OpNone)
|
|
continue;
|
|
|
|
std::string Proto = R->getValueAsString("Prototype");
|
|
std::string Types = R->getValueAsString("Types");
|
|
std::string name = R->getValueAsString("Name");
|
|
|
|
// Functions with 'a' (the splat code) in the type prototype should not get
|
|
// their own builtin as they use the non-splat variant.
|
|
if (Proto.find('a') != std::string::npos)
|
|
continue;
|
|
|
|
// Functions which have a scalar argument cannot be overloaded, no need to
|
|
// check them if we are emitting the type checking code.
|
|
if (Proto.find('s') != std::string::npos)
|
|
continue;
|
|
|
|
SmallVector<StringRef, 16> TypeVec;
|
|
ParseTypes(R, Types, TypeVec);
|
|
|
|
if (R->getSuperClasses().size() < 2)
|
|
throw TGError(R->getLoc(), "Builtin has no class kind");
|
|
|
|
int si = -1, qi = -1;
|
|
unsigned mask = 0, qmask = 0;
|
|
for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
|
|
// Generate the switch case(s) for this builtin for the type validation.
|
|
bool quad = false, poly = false, usgn = false;
|
|
(void) ClassifyType(TypeVec[ti], quad, poly, usgn);
|
|
|
|
if (quad) {
|
|
qi = ti;
|
|
qmask |= 1 << GetNeonEnum(Proto, TypeVec[ti]);
|
|
} else {
|
|
si = ti;
|
|
mask |= 1 << GetNeonEnum(Proto, TypeVec[ti]);
|
|
}
|
|
}
|
|
if (mask)
|
|
OS << "case ARM::BI__builtin_neon_"
|
|
<< MangleName(name, TypeVec[si], ClassB)
|
|
<< ": mask = " << "0x" << utohexstr(mask) << "; break;\n";
|
|
if (qmask)
|
|
OS << "case ARM::BI__builtin_neon_"
|
|
<< MangleName(name, TypeVec[qi], ClassB)
|
|
<< ": mask = " << "0x" << utohexstr(qmask) << "; break;\n";
|
|
}
|
|
OS << "#endif\n\n";
|
|
|
|
// Generate the intrinsic range checking code for shift/lane immediates.
|
|
OS << "#ifdef GET_NEON_IMMEDIATE_CHECK\n";
|
|
for (unsigned i = 0, e = RV.size(); i != e; ++i) {
|
|
Record *R = RV[i];
|
|
|
|
OpKind k = OpMap[R->getValueAsDef("Operand")->getName()];
|
|
if (k != OpNone)
|
|
continue;
|
|
|
|
std::string name = R->getValueAsString("Name");
|
|
std::string Proto = R->getValueAsString("Prototype");
|
|
std::string Types = R->getValueAsString("Types");
|
|
|
|
// Functions with 'a' (the splat code) in the type prototype should not get
|
|
// their own builtin as they use the non-splat variant.
|
|
if (Proto.find('a') != std::string::npos)
|
|
continue;
|
|
|
|
// Functions which do not have an immediate do not need to have range
|
|
// checking code emitted.
|
|
size_t immPos = Proto.find('i');
|
|
if (immPos == std::string::npos)
|
|
continue;
|
|
|
|
SmallVector<StringRef, 16> TypeVec;
|
|
ParseTypes(R, Types, TypeVec);
|
|
|
|
if (R->getSuperClasses().size() < 2)
|
|
throw TGError(R->getLoc(), "Builtin has no class kind");
|
|
|
|
ClassKind ck = ClassMap[R->getSuperClasses()[1]];
|
|
|
|
for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
|
|
std::string namestr, shiftstr, rangestr;
|
|
|
|
if (R->getValueAsBit("isVCVT_N")) {
|
|
// VCVT between floating- and fixed-point values takes an immediate
|
|
// in the range 1 to 32.
|
|
ck = ClassB;
|
|
rangestr = "l = 1; u = 31"; // upper bound = l + u
|
|
} else if (Proto.find('s') == std::string::npos) {
|
|
// Builtins which are overloaded by type will need to have their upper
|
|
// bound computed at Sema time based on the type constant.
|
|
ck = ClassB;
|
|
if (R->getValueAsBit("isShift")) {
|
|
shiftstr = ", true";
|
|
|
|
// Right shifts have an 'r' in the name, left shifts do not.
|
|
if (name.find('r') != std::string::npos)
|
|
rangestr = "l = 1; ";
|
|
}
|
|
rangestr += "u = RFT(TV" + shiftstr + ")";
|
|
} else {
|
|
// The immediate generally refers to a lane in the preceding argument.
|
|
assert(immPos > 0 && "unexpected immediate operand");
|
|
rangestr = "u = " + utostr(RangeFromType(Proto[immPos-1], TypeVec[ti]));
|
|
}
|
|
// Make sure cases appear only once by uniquing them in a string map.
|
|
namestr = MangleName(name, TypeVec[ti], ck);
|
|
if (EmittedMap.count(namestr))
|
|
continue;
|
|
EmittedMap[namestr] = OpNone;
|
|
|
|
// Calculate the index of the immediate that should be range checked.
|
|
unsigned immidx = 0;
|
|
|
|
// Builtins that return a struct of multiple vectors have an extra
|
|
// leading arg for the struct return.
|
|
if (Proto[0] >= '2' && Proto[0] <= '4')
|
|
++immidx;
|
|
|
|
// Add one to the index for each argument until we reach the immediate
|
|
// to be checked. Structs of vectors are passed as multiple arguments.
|
|
for (unsigned ii = 1, ie = Proto.size(); ii != ie; ++ii) {
|
|
switch (Proto[ii]) {
|
|
default: immidx += 1; break;
|
|
case '2': immidx += 2; break;
|
|
case '3': immidx += 3; break;
|
|
case '4': immidx += 4; break;
|
|
case 'i': ie = ii + 1; break;
|
|
}
|
|
}
|
|
OS << "case ARM::BI__builtin_neon_" << MangleName(name, TypeVec[ti], ck)
|
|
<< ": i = " << immidx << "; " << rangestr << "; break;\n";
|
|
}
|
|
}
|
|
OS << "#endif\n\n";
|
|
}
|
|
|
|
/// GenTest - Write out a test for the intrinsic specified by the name and
|
|
/// type strings, including the embedded patterns for FileCheck to match.
|
|
static std::string GenTest(const std::string &name,
|
|
const std::string &proto,
|
|
StringRef outTypeStr, StringRef inTypeStr,
|
|
bool isShift) {
|
|
assert(!proto.empty() && "");
|
|
std::string s;
|
|
|
|
// Function name with type suffix
|
|
std::string mangledName = MangleName(name, outTypeStr, ClassS);
|
|
if (outTypeStr != inTypeStr) {
|
|
// If the input type is different (e.g., for vreinterpret), append a suffix
|
|
// for the input type. String off a "Q" (quad) prefix so that MangleName
|
|
// does not insert another "q" in the name.
|
|
unsigned typeStrOff = (inTypeStr[0] == 'Q' ? 1 : 0);
|
|
StringRef inTypeNoQuad = inTypeStr.substr(typeStrOff);
|
|
mangledName = MangleName(mangledName, inTypeNoQuad, ClassS);
|
|
}
|
|
|
|
// Emit the FileCheck patterns.
|
|
s += "// CHECK: test_" + mangledName + "\n";
|
|
// s += "// CHECK: \n"; // FIXME: + expected instruction opcode.
|
|
|
|
// Emit the start of the test function.
|
|
s += TypeString(proto[0], outTypeStr) + " test_" + mangledName + "(";
|
|
char arg = 'a';
|
|
std::string comma;
|
|
for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
|
|
// Do not create arguments for values that must be immediate constants.
|
|
if (proto[i] == 'i')
|
|
continue;
|
|
s += comma + TypeString(proto[i], inTypeStr) + " ";
|
|
s.push_back(arg);
|
|
comma = ", ";
|
|
}
|
|
s += ") { \\\n ";
|
|
|
|
if (proto[0] != 'v')
|
|
s += "return ";
|
|
s += mangledName + "(";
|
|
arg = 'a';
|
|
for (unsigned i = 1, e = proto.size(); i != e; ++i, ++arg) {
|
|
if (proto[i] == 'i') {
|
|
// For immediate operands, test the maximum value.
|
|
if (isShift)
|
|
s += "1"; // FIXME
|
|
else
|
|
// The immediate generally refers to a lane in the preceding argument.
|
|
s += utostr(RangeFromType(proto[i-1], inTypeStr));
|
|
} else {
|
|
s.push_back(arg);
|
|
}
|
|
if ((i + 1) < e)
|
|
s += ", ";
|
|
}
|
|
s += ");\n}\n\n";
|
|
return s;
|
|
}
|
|
|
|
/// runTests - Write out a complete set of tests for all of the Neon
|
|
/// intrinsics.
|
|
void NeonEmitter::runTests(raw_ostream &OS) {
|
|
OS <<
|
|
"// RUN: %clang_cc1 -triple thumbv7-apple-darwin \\\n"
|
|
"// RUN: -target-cpu cortex-a9 -ffreestanding -S -o - %s | FileCheck %s\n"
|
|
"\n"
|
|
"#include <arm_neon.h>\n"
|
|
"\n";
|
|
|
|
std::vector<Record*> RV = Records.getAllDerivedDefinitions("Inst");
|
|
for (unsigned i = 0, e = RV.size(); i != e; ++i) {
|
|
Record *R = RV[i];
|
|
std::string name = R->getValueAsString("Name");
|
|
std::string Proto = R->getValueAsString("Prototype");
|
|
std::string Types = R->getValueAsString("Types");
|
|
bool isShift = R->getValueAsBit("isShift");
|
|
|
|
SmallVector<StringRef, 16> TypeVec;
|
|
ParseTypes(R, Types, TypeVec);
|
|
|
|
OpKind kind = OpMap[R->getValueAsDef("Operand")->getName()];
|
|
for (unsigned ti = 0, te = TypeVec.size(); ti != te; ++ti) {
|
|
if (kind == OpReinterpret) {
|
|
bool outQuad = false;
|
|
bool dummy = false;
|
|
(void)ClassifyType(TypeVec[ti], outQuad, dummy, dummy);
|
|
for (unsigned srcti = 0, srcte = TypeVec.size();
|
|
srcti != srcte; ++srcti) {
|
|
bool inQuad = false;
|
|
(void)ClassifyType(TypeVec[srcti], inQuad, dummy, dummy);
|
|
if (srcti == ti || inQuad != outQuad)
|
|
continue;
|
|
OS << GenTest(name, Proto, TypeVec[ti], TypeVec[srcti], isShift);
|
|
}
|
|
} else {
|
|
OS << GenTest(name, Proto, TypeVec[ti], TypeVec[ti], isShift);
|
|
}
|
|
}
|
|
OS << "\n";
|
|
}
|
|
}
|
|
|