mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-12 15:05:06 +00:00
Move x86 specific shuffle mask decoding to its own header, it's also going to be used elsewhere. Also trim trailing whitespaces
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112846 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bruno Cardoso Lopes
parent
9204ddad5c
commit
6b1d0a3b36
@ -16,137 +16,13 @@
|
||||
#include "X86GenInstrNames.inc"
|
||||
#include "llvm/MC/MCInst.h"
|
||||
#include "llvm/Support/raw_ostream.h"
|
||||
#include "../X86ShuffleDecode.h"
|
||||
using namespace llvm;
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
// Vector Mask Decoding
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
enum {
|
||||
SM_SentinelZero = ~0U
|
||||
};
|
||||
|
||||
static void DecodeINSERTPSMask(unsigned Imm,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
// Defaults the copying the dest value.
|
||||
ShuffleMask.push_back(0);
|
||||
ShuffleMask.push_back(1);
|
||||
ShuffleMask.push_back(2);
|
||||
ShuffleMask.push_back(3);
|
||||
|
||||
// Decode the immediate.
|
||||
unsigned ZMask = Imm & 15;
|
||||
unsigned CountD = (Imm >> 4) & 3;
|
||||
unsigned CountS = (Imm >> 6) & 3;
|
||||
|
||||
// CountS selects which input element to use.
|
||||
unsigned InVal = 4+CountS;
|
||||
// CountD specifies which element of destination to update.
|
||||
ShuffleMask[CountD] = InVal;
|
||||
// ZMask zaps values, potentially overriding the CountD elt.
|
||||
if (ZMask & 1) ShuffleMask[0] = SM_SentinelZero;
|
||||
if (ZMask & 2) ShuffleMask[1] = SM_SentinelZero;
|
||||
if (ZMask & 4) ShuffleMask[2] = SM_SentinelZero;
|
||||
if (ZMask & 8) ShuffleMask[3] = SM_SentinelZero;
|
||||
}
|
||||
|
||||
static void DecodeMOVHLPSMask(SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
ShuffleMask.push_back(3);
|
||||
ShuffleMask.push_back(1);
|
||||
}
|
||||
|
||||
static void DecodeMOVLHPSMask(SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
ShuffleMask.push_back(0);
|
||||
ShuffleMask.push_back(2);
|
||||
}
|
||||
|
||||
static void DecodePSHUFMask(unsigned NElts, unsigned Imm,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != NElts; ++i) {
|
||||
ShuffleMask.push_back(Imm % NElts);
|
||||
Imm /= NElts;
|
||||
}
|
||||
}
|
||||
|
||||
static void DecodePSHUFHWMask(unsigned Imm,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
ShuffleMask.push_back(0);
|
||||
ShuffleMask.push_back(1);
|
||||
ShuffleMask.push_back(2);
|
||||
ShuffleMask.push_back(3);
|
||||
for (unsigned i = 0; i != 4; ++i) {
|
||||
ShuffleMask.push_back(4+(Imm & 3));
|
||||
Imm >>= 2;
|
||||
}
|
||||
}
|
||||
|
||||
static void DecodePSHUFLWMask(unsigned Imm,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != 4; ++i) {
|
||||
ShuffleMask.push_back((Imm & 3));
|
||||
Imm >>= 2;
|
||||
}
|
||||
ShuffleMask.push_back(4);
|
||||
ShuffleMask.push_back(5);
|
||||
ShuffleMask.push_back(6);
|
||||
ShuffleMask.push_back(7);
|
||||
}
|
||||
|
||||
static void DecodePUNPCKLMask(unsigned NElts,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(i);
|
||||
ShuffleMask.push_back(i+NElts);
|
||||
}
|
||||
}
|
||||
|
||||
static void DecodePUNPCKHMask(unsigned NElts,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(i+NElts/2);
|
||||
ShuffleMask.push_back(i+NElts+NElts/2);
|
||||
}
|
||||
}
|
||||
|
||||
static void DecodeSHUFPSMask(unsigned NElts, unsigned Imm,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
// Part that reads from dest.
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(Imm % NElts);
|
||||
Imm /= NElts;
|
||||
}
|
||||
// Part that reads from src.
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(Imm % NElts + NElts);
|
||||
Imm /= NElts;
|
||||
}
|
||||
}
|
||||
|
||||
static void DecodeUNPCKHPMask(unsigned NElts,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(i+NElts/2); // Reads from dest
|
||||
ShuffleMask.push_back(i+NElts+NElts/2); // Reads from src
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/// DecodeUNPCKLPMask - This decodes the shuffle masks for unpcklps/unpcklpd
|
||||
/// etc. NElts indicates the number of elements in the vector allowing it to
|
||||
/// handle different datatypes and vector widths.
|
||||
static void DecodeUNPCKLPMask(unsigned NElts,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(i); // Reads from dest
|
||||
ShuffleMask.push_back(i+NElts); // Reads from src
|
||||
}
|
||||
}
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
// Top Level Entrypoint
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
|
||||
/// EmitAnyX86InstComments - This function decodes x86 instructions and prints
|
||||
/// newline terminated strings to the specified string if desired. This
|
||||
/// information is shown in disassembly dumps when verbose assembly is enabled.
|
||||
@ -155,26 +31,26 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
|
||||
// If this is a shuffle operation, the switch should fill in this state.
|
||||
SmallVector<unsigned, 8> ShuffleMask;
|
||||
const char *DestName = 0, *Src1Name = 0, *Src2Name = 0;
|
||||
|
||||
|
||||
switch (MI->getOpcode()) {
|
||||
case X86::INSERTPSrr:
|
||||
Src1Name = getRegName(MI->getOperand(1).getReg());
|
||||
Src2Name = getRegName(MI->getOperand(2).getReg());
|
||||
DecodeINSERTPSMask(MI->getOperand(3).getImm(), ShuffleMask);
|
||||
break;
|
||||
|
||||
|
||||
case X86::MOVLHPSrr:
|
||||
Src2Name = getRegName(MI->getOperand(2).getReg());
|
||||
Src1Name = getRegName(MI->getOperand(0).getReg());
|
||||
DecodeMOVLHPSMask(ShuffleMask);
|
||||
break;
|
||||
|
||||
|
||||
case X86::MOVHLPSrr:
|
||||
Src2Name = getRegName(MI->getOperand(2).getReg());
|
||||
Src1Name = getRegName(MI->getOperand(0).getReg());
|
||||
DecodeMOVHLPSMask(ShuffleMask);
|
||||
break;
|
||||
|
||||
|
||||
case X86::PSHUFDri:
|
||||
Src1Name = getRegName(MI->getOperand(1).getReg());
|
||||
// FALL THROUGH.
|
||||
@ -183,7 +59,7 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
|
||||
DecodePSHUFMask(4, MI->getOperand(MI->getNumOperands()-1).getImm(),
|
||||
ShuffleMask);
|
||||
break;
|
||||
|
||||
|
||||
case X86::PSHUFHWri:
|
||||
Src1Name = getRegName(MI->getOperand(1).getReg());
|
||||
// FALL THROUGH.
|
||||
@ -200,7 +76,7 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
|
||||
DecodePSHUFLWMask(MI->getOperand(MI->getNumOperands()-1).getImm(),
|
||||
ShuffleMask);
|
||||
break;
|
||||
|
||||
|
||||
case X86::PUNPCKHBWrr:
|
||||
Src2Name = getRegName(MI->getOperand(2).getReg());
|
||||
// FALL THROUGH.
|
||||
@ -229,7 +105,7 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
|
||||
Src1Name = getRegName(MI->getOperand(0).getReg());
|
||||
DecodePUNPCKHMask(2, ShuffleMask);
|
||||
break;
|
||||
|
||||
|
||||
case X86::PUNPCKLBWrr:
|
||||
Src2Name = getRegName(MI->getOperand(2).getReg());
|
||||
// FALL THROUGH.
|
||||
@ -258,13 +134,13 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
|
||||
Src1Name = getRegName(MI->getOperand(0).getReg());
|
||||
DecodePUNPCKLMask(2, ShuffleMask);
|
||||
break;
|
||||
|
||||
|
||||
case X86::SHUFPDrri:
|
||||
DecodeSHUFPSMask(2, MI->getOperand(3).getImm(), ShuffleMask);
|
||||
Src1Name = getRegName(MI->getOperand(0).getReg());
|
||||
Src2Name = getRegName(MI->getOperand(2).getReg());
|
||||
break;
|
||||
|
||||
|
||||
case X86::SHUFPSrri:
|
||||
Src2Name = getRegName(MI->getOperand(2).getReg());
|
||||
// FALL THROUGH.
|
||||
@ -272,7 +148,7 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
|
||||
DecodeSHUFPSMask(4, MI->getOperand(3).getImm(), ShuffleMask);
|
||||
Src1Name = getRegName(MI->getOperand(0).getReg());
|
||||
break;
|
||||
|
||||
|
||||
case X86::UNPCKLPDrr:
|
||||
Src2Name = getRegName(MI->getOperand(2).getReg());
|
||||
// FALL THROUGH.
|
||||
@ -303,12 +179,12 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
|
||||
break;
|
||||
}
|
||||
|
||||
|
||||
|
||||
// If this was a shuffle operation, print the shuffle mask.
|
||||
if (!ShuffleMask.empty()) {
|
||||
if (DestName == 0) DestName = Src1Name;
|
||||
OS << (DestName ? DestName : "mem") << " = ";
|
||||
|
||||
|
||||
// If the two sources are the same, canonicalize the input elements to be
|
||||
// from the first src so that we get larger element spans.
|
||||
if (Src1Name == Src2Name) {
|
||||
@ -318,7 +194,7 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
|
||||
ShuffleMask[i] -= e;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// The shuffle mask specifies which elements of the src1/src2 fill in the
|
||||
// destination, with a few sentinel values. Loop through and print them
|
||||
// out.
|
||||
@ -329,7 +205,7 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
|
||||
OS << "zero";
|
||||
continue;
|
||||
}
|
||||
|
||||
|
||||
// Otherwise, it must come from src1 or src2. Print the span of elements
|
||||
// that comes from this src.
|
||||
bool isSrc1 = ShuffleMask[i] < ShuffleMask.size();
|
||||
@ -352,5 +228,5 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
|
||||
//MI->print(OS, 0);
|
||||
OS << "\n";
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
145
lib/Target/X86/X86ShuffleDecode.h
Normal file
145
lib/Target/X86/X86ShuffleDecode.h
Normal file
@ -0,0 +1,145 @@
|
||||
//===-- X86ShuffleDecode.h - X86 shuffle decode logic ---------------------===//
|
||||
//
|
||||
// The LLVM Compiler Infrastructure
|
||||
//
|
||||
// This file is distributed under the University of Illinois Open Source
|
||||
// License. See LICENSE.TXT for details.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
//
|
||||
// Define several functions to decode x86 specific shuffle semantics into a
|
||||
// generic vector mask.
|
||||
//
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
#ifndef X86_SHUFFLE_DECODE_H
|
||||
#define X86_SHUFFLE_DECODE_H
|
||||
|
||||
#include "llvm/ADT/SmallVector.h"
|
||||
using namespace llvm;
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
// Vector Mask Decoding
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
enum {
|
||||
SM_SentinelZero = ~0U
|
||||
};
|
||||
|
||||
static void DecodeINSERTPSMask(unsigned Imm,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
// Defaults the copying the dest value.
|
||||
ShuffleMask.push_back(0);
|
||||
ShuffleMask.push_back(1);
|
||||
ShuffleMask.push_back(2);
|
||||
ShuffleMask.push_back(3);
|
||||
|
||||
// Decode the immediate.
|
||||
unsigned ZMask = Imm & 15;
|
||||
unsigned CountD = (Imm >> 4) & 3;
|
||||
unsigned CountS = (Imm >> 6) & 3;
|
||||
|
||||
// CountS selects which input element to use.
|
||||
unsigned InVal = 4+CountS;
|
||||
// CountD specifies which element of destination to update.
|
||||
ShuffleMask[CountD] = InVal;
|
||||
// ZMask zaps values, potentially overriding the CountD elt.
|
||||
if (ZMask & 1) ShuffleMask[0] = SM_SentinelZero;
|
||||
if (ZMask & 2) ShuffleMask[1] = SM_SentinelZero;
|
||||
if (ZMask & 4) ShuffleMask[2] = SM_SentinelZero;
|
||||
if (ZMask & 8) ShuffleMask[3] = SM_SentinelZero;
|
||||
}
|
||||
|
||||
static void DecodeMOVHLPSMask(SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
ShuffleMask.push_back(3);
|
||||
ShuffleMask.push_back(1);
|
||||
}
|
||||
|
||||
static void DecodeMOVLHPSMask(SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
ShuffleMask.push_back(0);
|
||||
ShuffleMask.push_back(2);
|
||||
}
|
||||
|
||||
static void DecodePSHUFMask(unsigned NElts, unsigned Imm,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != NElts; ++i) {
|
||||
ShuffleMask.push_back(Imm % NElts);
|
||||
Imm /= NElts;
|
||||
}
|
||||
}
|
||||
|
||||
static void DecodePSHUFHWMask(unsigned Imm,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
ShuffleMask.push_back(0);
|
||||
ShuffleMask.push_back(1);
|
||||
ShuffleMask.push_back(2);
|
||||
ShuffleMask.push_back(3);
|
||||
for (unsigned i = 0; i != 4; ++i) {
|
||||
ShuffleMask.push_back(4+(Imm & 3));
|
||||
Imm >>= 2;
|
||||
}
|
||||
}
|
||||
|
||||
static void DecodePSHUFLWMask(unsigned Imm,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != 4; ++i) {
|
||||
ShuffleMask.push_back((Imm & 3));
|
||||
Imm >>= 2;
|
||||
}
|
||||
ShuffleMask.push_back(4);
|
||||
ShuffleMask.push_back(5);
|
||||
ShuffleMask.push_back(6);
|
||||
ShuffleMask.push_back(7);
|
||||
}
|
||||
|
||||
static void DecodePUNPCKLMask(unsigned NElts,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(i);
|
||||
ShuffleMask.push_back(i+NElts);
|
||||
}
|
||||
}
|
||||
|
||||
static void DecodePUNPCKHMask(unsigned NElts,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(i+NElts/2);
|
||||
ShuffleMask.push_back(i+NElts+NElts/2);
|
||||
}
|
||||
}
|
||||
|
||||
static void DecodeSHUFPSMask(unsigned NElts, unsigned Imm,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
// Part that reads from dest.
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(Imm % NElts);
|
||||
Imm /= NElts;
|
||||
}
|
||||
// Part that reads from src.
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(Imm % NElts + NElts);
|
||||
Imm /= NElts;
|
||||
}
|
||||
}
|
||||
|
||||
static void DecodeUNPCKHPMask(unsigned NElts,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(i+NElts/2); // Reads from dest
|
||||
ShuffleMask.push_back(i+NElts+NElts/2); // Reads from src
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/// DecodeUNPCKLPMask - This decodes the shuffle masks for unpcklps/unpcklpd
|
||||
/// etc. NElts indicates the number of elements in the vector allowing it to
|
||||
/// handle different datatypes and vector widths.
|
||||
static void DecodeUNPCKLPMask(unsigned NElts,
|
||||
SmallVectorImpl<unsigned> &ShuffleMask) {
|
||||
for (unsigned i = 0; i != NElts/2; ++i) {
|
||||
ShuffleMask.push_back(i); // Reads from dest
|
||||
ShuffleMask.push_back(i+NElts); // Reads from src
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user