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89b57061f7
This moves the registry higher in the LLVM library dependency stack. Every client of the target registry needs to link against MC anyway to actually use the target, so we might as well move this out of Support. This allows us to ensure that Support doesn't have includes from MC/*. Differential Revision: https://reviews.llvm.org/D111454
103 lines
3.2 KiB
C++
103 lines
3.2 KiB
C++
//===-- SparcSubtarget.cpp - SPARC Subtarget Information ------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the SPARC specific subclass of TargetSubtargetInfo.
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//
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//===----------------------------------------------------------------------===//
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#include "SparcSubtarget.h"
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#include "Sparc.h"
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#include "llvm/MC/TargetRegistry.h"
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#include "llvm/Support/MathExtras.h"
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using namespace llvm;
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#define DEBUG_TYPE "sparc-subtarget"
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#define GET_SUBTARGETINFO_TARGET_DESC
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#define GET_SUBTARGETINFO_CTOR
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#include "SparcGenSubtargetInfo.inc"
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void SparcSubtarget::anchor() { }
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SparcSubtarget &SparcSubtarget::initializeSubtargetDependencies(StringRef CPU,
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StringRef FS) {
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UseSoftMulDiv = false;
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IsV9 = false;
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IsLeon = false;
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V8DeprecatedInsts = false;
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IsVIS = false;
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IsVIS2 = false;
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IsVIS3 = false;
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HasHardQuad = false;
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UsePopc = false;
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UseSoftFloat = false;
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HasNoFSMULD = false;
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HasNoFMULS = false;
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// Leon features
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HasLeonCasa = false;
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HasUmacSmac = false;
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HasPWRPSR = false;
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InsertNOPLoad = false;
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FixAllFDIVSQRT = false;
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DetectRoundChange = false;
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HasLeonCycleCounter = false;
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// Determine default and user specified characteristics
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std::string CPUName = std::string(CPU);
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if (CPUName.empty())
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CPUName = (Is64Bit) ? "v9" : "v8";
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// Parse features string.
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ParseSubtargetFeatures(CPUName, /*TuneCPU*/ CPUName, FS);
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// Popc is a v9-only instruction.
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if (!IsV9)
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UsePopc = false;
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return *this;
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}
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SparcSubtarget::SparcSubtarget(const Triple &TT, const std::string &CPU,
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const std::string &FS, const TargetMachine &TM,
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bool is64Bit)
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: SparcGenSubtargetInfo(TT, CPU, /*TuneCPU*/ CPU, FS), TargetTriple(TT),
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Is64Bit(is64Bit), InstrInfo(initializeSubtargetDependencies(CPU, FS)),
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TLInfo(TM, *this), FrameLowering(*this) {}
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int SparcSubtarget::getAdjustedFrameSize(int frameSize) const {
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if (is64Bit()) {
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// All 64-bit stack frames must be 16-byte aligned, and must reserve space
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// for spilling the 16 window registers at %sp+BIAS..%sp+BIAS+128.
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frameSize += 128;
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// Frames with calls must also reserve space for 6 outgoing arguments
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// whether they are used or not. LowerCall_64 takes care of that.
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frameSize = alignTo(frameSize, 16);
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} else {
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// Emit the correct save instruction based on the number of bytes in
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// the frame. Minimum stack frame size according to V8 ABI is:
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// 16 words for register window spill
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// 1 word for address of returned aggregate-value
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// + 6 words for passing parameters on the stack
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// ----------
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// 23 words * 4 bytes per word = 92 bytes
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frameSize += 92;
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// Round up to next doubleword boundary -- a double-word boundary
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// is required by the ABI.
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frameSize = alignTo(frameSize, 8);
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}
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return frameSize;
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}
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bool SparcSubtarget::enableMachineScheduler() const {
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return true;
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}
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