2012-02-18 20:03:15 +08:00
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//===-- SparcSubtarget.cpp - SPARC Subtarget Information ------------------===//
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2006-02-05 13:50:24 +08:00
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//
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// The LLVM Compiler Infrastructure
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//
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2007-12-30 04:36:04 +08:00
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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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2006-02-05 13:50:24 +08:00
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//
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//===----------------------------------------------------------------------===//
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//
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2011-07-02 05:01:15 +08:00
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// This file implements the SPARC specific subclass of TargetSubtargetInfo.
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2006-02-05 13:50:24 +08:00
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//
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//===----------------------------------------------------------------------===//
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#include "SparcSubtarget.h"
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2011-07-09 13:47:46 +08:00
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#include "Sparc.h"
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2013-06-01 12:51:18 +08:00
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#include "llvm/Support/MathExtras.h"
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2011-08-25 02:08:43 +08:00
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#include "llvm/Support/TargetRegistry.h"
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2011-07-02 04:45:01 +08:00
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2014-04-22 10:03:14 +08:00
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using namespace llvm;
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2014-04-22 06:55:11 +08:00
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#define DEBUG_TYPE "sparc-subtarget"
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2011-07-02 04:45:01 +08:00
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#define GET_SUBTARGETINFO_TARGET_DESC
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2011-07-08 09:53:10 +08:00
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#define GET_SUBTARGETINFO_CTOR
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2011-07-02 06:36:09 +08:00
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#include "SparcGenSubtargetInfo.inc"
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2011-07-02 04:45:01 +08:00
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2011-12-20 10:50:00 +08:00
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void SparcSubtarget::anchor() { }
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2014-06-27 06:33:55 +08:00
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SparcSubtarget &SparcSubtarget::initializeSubtargetDependencies(StringRef CPU,
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StringRef FS) {
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2017-07-19 12:08:42 +08:00
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UseSoftMulDiv = false;
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2014-06-27 06:33:55 +08:00
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IsV9 = false;
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2016-05-09 19:55:15 +08:00
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IsLeon = false;
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2014-06-27 06:33:55 +08:00
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V8DeprecatedInsts = false;
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IsVIS = false;
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2017-11-21 09:45:17 +08:00
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IsVIS2 = false;
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IsVIS3 = false;
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2014-06-27 06:33:55 +08:00
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HasHardQuad = false;
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UsePopc = false;
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2016-05-18 17:14:13 +08:00
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UseSoftFloat = false;
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2017-07-21 04:09:11 +08:00
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HasNoFSMULD = false;
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HasNoFMULS = false;
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2016-05-16 19:02:00 +08:00
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// Leon features
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HasLeonCasa = false;
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2016-05-09 19:55:15 +08:00
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HasUmacSmac = false;
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2016-08-12 22:48:09 +08:00
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InsertNOPLoad = false;
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2016-06-19 19:03:28 +08:00
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FixAllFDIVSQRT = false;
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2016-10-19 22:01:06 +08:00
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DetectRoundChange = false;
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2013-06-05 02:33:25 +08:00
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2006-02-05 13:50:24 +08:00
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// Determine default and user specified characteristics
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2011-06-30 09:53:36 +08:00
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std::string CPUName = CPU;
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2014-01-12 07:56:13 +08:00
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if (CPUName.empty())
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2014-06-27 06:33:55 +08:00
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CPUName = (Is64Bit) ? "v9" : "v8";
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2006-02-05 13:50:24 +08:00
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// Parse features string.
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2011-07-07 15:07:08 +08:00
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ParseSubtargetFeatures(CPUName, FS);
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2014-01-26 16:12:34 +08:00
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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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2014-06-27 06:33:55 +08:00
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return *this;
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2006-05-25 01:04:05 +08:00
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}
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2013-06-01 12:51:18 +08:00
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2015-06-10 20:11:26 +08:00
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SparcSubtarget::SparcSubtarget(const Triple &TT, const std::string &CPU,
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2016-05-03 22:57:18 +08:00
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const std::string &FS, const TargetMachine &TM,
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2014-06-27 06:33:55 +08:00
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bool is64Bit)
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2016-04-26 18:37:14 +08:00
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: SparcGenSubtargetInfo(TT, CPU, FS), TargetTriple(TT), Is64Bit(is64Bit),
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2015-01-31 07:46:43 +08:00
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InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this),
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2015-07-09 10:10:08 +08:00
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FrameLowering(*this) {}
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2013-06-01 12:51:18 +08:00
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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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2016-01-15 05:06:47 +08:00
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frameSize = alignTo(frameSize, 16);
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2013-06-01 12:51:18 +08:00
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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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2016-01-15 05:06:47 +08:00
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frameSize = alignTo(frameSize, 8);
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2013-06-01 12:51:18 +08:00
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}
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return frameSize;
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}
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2015-09-11 05:49:06 +08:00
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bool SparcSubtarget::enableMachineScheduler() const {
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return true;
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}
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