f785676f2a
all of the features in the current working draft of the upcoming C++ standard, provisionally named C++1y. The code generator's performance is greatly increased, and the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work. Release notes for llvm and clang can be found here: <http://llvm.org/releases/3.4/docs/ReleaseNotes.html> <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html> MFC after: 1 month
111 lines
3.0 KiB
C++
111 lines
3.0 KiB
C++
//===-- MCInstPrinter.cpp - Convert an MCInst to target assembly syntax ---===//
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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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#include "llvm/MC/MCInstPrinter.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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MCInstPrinter::~MCInstPrinter() {
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}
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/// getOpcodeName - Return the name of the specified opcode enum (e.g.
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/// "MOV32ri") or empty if we can't resolve it.
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StringRef MCInstPrinter::getOpcodeName(unsigned Opcode) const {
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return MII.getName(Opcode);
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}
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void MCInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
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llvm_unreachable("Target should implement this");
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}
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void MCInstPrinter::printAnnotation(raw_ostream &OS, StringRef Annot) {
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if (!Annot.empty()) {
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if (CommentStream) {
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(*CommentStream) << Annot;
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// By definition (see MCInstPrinter.h), CommentStream must end with
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// a newline after each comment.
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if (Annot.back() != '\n')
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(*CommentStream) << '\n';
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} else
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OS << " " << MAI.getCommentString() << " " << Annot;
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}
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}
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/// Utility functions to make adding mark ups simpler.
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StringRef MCInstPrinter::markup(StringRef s) const {
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if (getUseMarkup())
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return s;
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else
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return "";
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}
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StringRef MCInstPrinter::markup(StringRef a, StringRef b) const {
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if (getUseMarkup())
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return a;
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else
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return b;
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}
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// For asm-style hex (e.g. 0ffh) the first digit always has to be a number.
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static bool needsLeadingZero(uint64_t Value)
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{
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while(Value)
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{
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uint64_t digit = (Value >> 60) & 0xf;
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if (digit != 0)
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return (digit >= 0xa);
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Value <<= 4;
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}
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return false;
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}
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format_object1<int64_t> MCInstPrinter::formatDec(const int64_t Value) const {
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return format("%" PRId64, Value);
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}
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format_object1<int64_t> MCInstPrinter::formatHex(const int64_t Value) const {
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switch(PrintHexStyle) {
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case HexStyle::C:
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if (Value < 0)
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return format("-0x%" PRIx64, -Value);
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else
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return format("0x%" PRIx64, Value);
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case HexStyle::Asm:
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if (Value < 0) {
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if (needsLeadingZero((uint64_t)(-Value)))
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return format("-0%" PRIx64 "h", -Value);
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else
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return format("-%" PRIx64 "h", -Value);
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} else {
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if (needsLeadingZero((uint64_t)(Value)))
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return format("0%" PRIx64 "h", Value);
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else
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return format("%" PRIx64 "h", Value);
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}
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}
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llvm_unreachable("unsupported print style");
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}
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format_object1<uint64_t> MCInstPrinter::formatHex(const uint64_t Value) const {
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switch(PrintHexStyle) {
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case HexStyle::C:
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return format("0x%" PRIx64, Value);
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case HexStyle::Asm:
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if (needsLeadingZero(Value))
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return format("0%" PRIx64 "h", Value);
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else
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return format("%" PRIx64 "h", Value);
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}
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llvm_unreachable("unsupported print style");
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}
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