LLVM 17.0.0git
VESubtarget.cpp
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1//===-- VESubtarget.cpp - VE Subtarget Information ------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file implements the VE specific subclass of TargetSubtargetInfo.
10//
11//===----------------------------------------------------------------------===//
12
13#include "VESubtarget.h"
14#include "VE.h"
17
18using namespace llvm;
19
20#define DEBUG_TYPE "ve-subtarget"
21
22#define GET_SUBTARGETINFO_TARGET_DESC
23#define GET_SUBTARGETINFO_CTOR
24#include "VEGenSubtargetInfo.inc"
25
26void VESubtarget::anchor() {}
27
29 StringRef FS) {
30 // Default feature settings
31 EnableVPU = false;
32
33 // Determine default and user specified characteristics
34 std::string CPUName = std::string(CPU);
35 if (CPUName.empty())
36 CPUName = "generic";
37
38 // Parse features string.
39 ParseSubtargetFeatures(CPUName, /*TuneCPU=*/CPU, FS);
40
41 return *this;
42}
43
44VESubtarget::VESubtarget(const Triple &TT, const std::string &CPU,
45 const std::string &FS, const TargetMachine &TM)
46 : VEGenSubtargetInfo(TT, CPU, /*TuneCPU=*/CPU, FS), TargetTriple(TT),
47 InstrInfo(initializeSubtargetDependencies(CPU, FS)), TLInfo(TM, *this),
48 FrameLowering(*this) {}
49
51 // Calculate adjusted frame size by adding the size of RSA frame,
52 // return address, and frame poitner as described in VEFrameLowering.cpp.
53 const VEFrameLowering *TFL = getFrameLowering();
54
55 FrameSize += getRsaSize();
56 FrameSize = alignTo(FrameSize, TFL->getStackAlign());
57
58 return FrameSize;
59}
60
61bool VESubtarget::enableMachineScheduler() const { return true; }
const char LLVMTargetMachineRef TM
return InstrInfo
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
Align getStackAlign() const
getStackAlignment - This method returns the number of bytes to which the stack pointer must be aligne...
Primary interface to the complete machine description for the target machine.
Definition: TargetMachine.h:78
Triple - Helper class for working with autoconf configuration names.
Definition: Triple.h:44
uint64_t getAdjustedFrameSize(uint64_t FrameSize) const
Given a actual stack size as determined by FrameInfo, this function returns adjusted framesize which ...
Definition: VESubtarget.cpp:50
void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS)
ParseSubtargetFeatures - Parses features string setting specified subtarget options.
bool enableMachineScheduler() const override
Definition: VESubtarget.cpp:61
unsigned getRsaSize() const
Get the size of RSA, return address, and frame pointer as described in VEFrameLowering....
Definition: VESubtarget.h:79
VESubtarget & initializeSubtargetDependencies(StringRef CPU, StringRef FS)
Definition: VESubtarget.cpp:28
VESubtarget(const Triple &TT, const std::string &CPU, const std::string &FS, const TargetMachine &TM)
Definition: VESubtarget.cpp:44
const VEFrameLowering * getFrameLowering() const override
Definition: VESubtarget.h:52
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
uint64_t alignTo(uint64_t Size, Align A)
Returns a multiple of A needed to store Size bytes.
Definition: Alignment.h:155