2005-01-07 07:46:32 +00:00
|
|
|
//===-- SelectionDAG.cpp - Implement the SelectionDAG data structures -----===//
|
2003-10-20 19:43:21 +00:00
|
|
|
//
|
|
|
|
// The LLVM Compiler Infrastructure
|
|
|
|
//
|
|
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
|
|
//
|
|
|
|
//===----------------------------------------------------------------------===//
|
2003-08-11 14:57:33 +00:00
|
|
|
//
|
2005-01-07 07:46:32 +00:00
|
|
|
// This implements the SelectionDAG class.
|
2003-08-11 14:57:33 +00:00
|
|
|
//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
|
|
#include "llvm/CodeGen/SelectionDAG.h"
|
2005-01-07 07:46:32 +00:00
|
|
|
#include "llvm/Constants.h"
|
|
|
|
#include "llvm/GlobalValue.h"
|
|
|
|
#include "llvm/Assembly/Writer.h"
|
|
|
|
#include "llvm/CodeGen/MachineBasicBlock.h"
|
2004-07-04 12:19:56 +00:00
|
|
|
#include <iostream>
|
2005-01-07 21:09:16 +00:00
|
|
|
#include <set>
|
2005-01-07 07:46:32 +00:00
|
|
|
#include <cmath>
|
2005-01-09 20:41:56 +00:00
|
|
|
#include <algorithm>
|
2004-06-02 04:28:06 +00:00
|
|
|
using namespace llvm;
|
2003-11-11 22:41:34 +00:00
|
|
|
|
Add some folds for == and != comparisons. This allows us to
codegen this loop in stepanov:
no_exit.i: ; preds = %entry, %no_exit.i, %then.i, %_Z5checkd.exit
%i.0.0 = phi int [ 0, %entry ], [ %i.0.0, %no_exit.i ], [ %inc.0, %_Z5checkd.exit ], [ %inc.012, %then.i ] ; <int> [#uses=3]
%indvar = phi uint [ %indvar.next, %no_exit.i ], [ 0, %entry ], [ 0, %then.i ], [ 0, %_Z5checkd.exit ] ; <uint> [#uses=3]
%result_addr.i.0 = phi double [ %tmp.4.i.i, %no_exit.i ], [ 0.000000e+00, %entry ], [ 0.000000e+00, %then.i ], [ 0.000000e+00, %_Z5checkd.exit ] ; <double> [#uses=1]
%first_addr.0.i.2.rec = cast uint %indvar to int ; <int> [#uses=1]
%first_addr.0.i.2 = getelementptr [2000 x double]* %data, int 0, uint %indvar ; <double*> [#uses=1]
%inc.i.rec = add int %first_addr.0.i.2.rec, 1 ; <int> [#uses=1]
%inc.i = getelementptr [2000 x double]* %data, int 0, int %inc.i.rec ; <double*> [#uses=1]
%tmp.3.i.i = load double* %first_addr.0.i.2 ; <double> [#uses=1]
%tmp.4.i.i = add double %result_addr.i.0, %tmp.3.i.i ; <double> [#uses=2]
%tmp.2.i = seteq double* %inc.i, getelementptr ([2000 x double]* %data, int 0, int 2000) ; <bool> [#uses=1]
%indvar.next = add uint %indvar, 1 ; <uint> [#uses=1]
br bool %tmp.2.i, label %_Z10accumulateIPddET0_T_S2_S1_.exit, label %no_exit.i
To this:
.LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i
fldl data(,%eax,8)
fldl 16(%esp)
faddp %st(1)
fstpl 16(%esp)
incl %eax
movl %eax, %ecx
shll $3, %ecx
cmpl $16000, %ecx
#FP_REG_KILL
jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i
instead of this:
.LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i
fldl data(,%eax,8)
fldl 16(%esp)
faddp %st(1)
fstpl 16(%esp)
incl %eax
leal data(,%eax,8), %ecx
leal data+16000, %edx
cmpl %edx, %ecx
#FP_REG_KILL
jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19425 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 20:52:51 +00:00
|
|
|
static bool isCommutativeBinOp(unsigned Opcode) {
|
|
|
|
switch (Opcode) {
|
|
|
|
case ISD::ADD:
|
|
|
|
case ISD::MUL:
|
|
|
|
case ISD::AND:
|
|
|
|
case ISD::OR:
|
|
|
|
case ISD::XOR: return true;
|
|
|
|
default: return false; // FIXME: Need commutative info for user ops!
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool isAssociativeBinOp(unsigned Opcode) {
|
|
|
|
switch (Opcode) {
|
|
|
|
case ISD::ADD:
|
|
|
|
case ISD::MUL:
|
|
|
|
case ISD::AND:
|
|
|
|
case ISD::OR:
|
|
|
|
case ISD::XOR: return true;
|
|
|
|
default: return false; // FIXME: Need associative info for user ops!
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static unsigned ExactLog2(uint64_t Val) {
|
|
|
|
unsigned Count = 0;
|
|
|
|
while (Val != 1) {
|
|
|
|
Val >>= 1;
|
|
|
|
++Count;
|
|
|
|
}
|
|
|
|
return Count;
|
|
|
|
}
|
|
|
|
|
|
|
|
// isInvertibleForFree - Return true if there is no cost to emitting the logical
|
|
|
|
// inverse of this node.
|
|
|
|
static bool isInvertibleForFree(SDOperand N) {
|
|
|
|
if (isa<ConstantSDNode>(N.Val)) return true;
|
|
|
|
if (isa<SetCCSDNode>(N.Val) && N.Val->hasOneUse())
|
|
|
|
return true;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2005-01-07 07:46:32 +00:00
|
|
|
/// getSetCCSwappedOperands - Return the operation corresponding to (Y op X)
|
|
|
|
/// when given the operation for (X op Y).
|
|
|
|
ISD::CondCode ISD::getSetCCSwappedOperands(ISD::CondCode Operation) {
|
|
|
|
// To perform this operation, we just need to swap the L and G bits of the
|
|
|
|
// operation.
|
|
|
|
unsigned OldL = (Operation >> 2) & 1;
|
|
|
|
unsigned OldG = (Operation >> 1) & 1;
|
|
|
|
return ISD::CondCode((Operation & ~6) | // Keep the N, U, E bits
|
|
|
|
(OldL << 1) | // New G bit
|
|
|
|
(OldG << 2)); // New L bit.
|
|
|
|
}
|
|
|
|
|
|
|
|
/// getSetCCInverse - Return the operation corresponding to !(X op Y), where
|
|
|
|
/// 'op' is a valid SetCC operation.
|
|
|
|
ISD::CondCode ISD::getSetCCInverse(ISD::CondCode Op, bool isInteger) {
|
|
|
|
unsigned Operation = Op;
|
|
|
|
if (isInteger)
|
|
|
|
Operation ^= 7; // Flip L, G, E bits, but not U.
|
|
|
|
else
|
|
|
|
Operation ^= 15; // Flip all of the condition bits.
|
|
|
|
if (Operation > ISD::SETTRUE2)
|
|
|
|
Operation &= ~8; // Don't let N and U bits get set.
|
|
|
|
return ISD::CondCode(Operation);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/// isSignedOp - For an integer comparison, return 1 if the comparison is a
|
|
|
|
/// signed operation and 2 if the result is an unsigned comparison. Return zero
|
|
|
|
/// if the operation does not depend on the sign of the input (setne and seteq).
|
|
|
|
static int isSignedOp(ISD::CondCode Opcode) {
|
|
|
|
switch (Opcode) {
|
|
|
|
default: assert(0 && "Illegal integer setcc operation!");
|
|
|
|
case ISD::SETEQ:
|
|
|
|
case ISD::SETNE: return 0;
|
|
|
|
case ISD::SETLT:
|
|
|
|
case ISD::SETLE:
|
|
|
|
case ISD::SETGT:
|
|
|
|
case ISD::SETGE: return 1;
|
|
|
|
case ISD::SETULT:
|
|
|
|
case ISD::SETULE:
|
|
|
|
case ISD::SETUGT:
|
|
|
|
case ISD::SETUGE: return 2;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// getSetCCOrOperation - Return the result of a logical OR between different
|
|
|
|
/// comparisons of identical values: ((X op1 Y) | (X op2 Y)). This function
|
|
|
|
/// returns SETCC_INVALID if it is not possible to represent the resultant
|
|
|
|
/// comparison.
|
|
|
|
ISD::CondCode ISD::getSetCCOrOperation(ISD::CondCode Op1, ISD::CondCode Op2,
|
|
|
|
bool isInteger) {
|
|
|
|
if (isInteger && (isSignedOp(Op1) | isSignedOp(Op2)) == 3)
|
|
|
|
// Cannot fold a signed integer setcc with an unsigned integer setcc.
|
|
|
|
return ISD::SETCC_INVALID;
|
|
|
|
|
|
|
|
unsigned Op = Op1 | Op2; // Combine all of the condition bits.
|
|
|
|
|
|
|
|
// If the N and U bits get set then the resultant comparison DOES suddenly
|
|
|
|
// care about orderedness, and is true when ordered.
|
|
|
|
if (Op > ISD::SETTRUE2)
|
|
|
|
Op &= ~16; // Clear the N bit.
|
|
|
|
return ISD::CondCode(Op);
|
|
|
|
}
|
|
|
|
|
|
|
|
/// getSetCCAndOperation - Return the result of a logical AND between different
|
|
|
|
/// comparisons of identical values: ((X op1 Y) & (X op2 Y)). This
|
|
|
|
/// function returns zero if it is not possible to represent the resultant
|
|
|
|
/// comparison.
|
|
|
|
ISD::CondCode ISD::getSetCCAndOperation(ISD::CondCode Op1, ISD::CondCode Op2,
|
|
|
|
bool isInteger) {
|
|
|
|
if (isInteger && (isSignedOp(Op1) | isSignedOp(Op2)) == 3)
|
|
|
|
// Cannot fold a signed setcc with an unsigned setcc.
|
|
|
|
return ISD::SETCC_INVALID;
|
|
|
|
|
|
|
|
// Combine all of the condition bits.
|
|
|
|
return ISD::CondCode(Op1 & Op2);
|
|
|
|
}
|
|
|
|
|
2005-01-07 21:09:16 +00:00
|
|
|
/// RemoveDeadNodes - This method deletes all unreachable nodes in the
|
|
|
|
/// SelectionDAG, including nodes (like loads) that have uses of their token
|
|
|
|
/// chain but no other uses and no side effect. If a node is passed in as an
|
|
|
|
/// argument, it is used as the seed for node deletion.
|
|
|
|
void SelectionDAG::RemoveDeadNodes(SDNode *N) {
|
|
|
|
std::set<SDNode*> AllNodeSet(AllNodes.begin(), AllNodes.end());
|
|
|
|
|
|
|
|
// Create a dummy node (which is not added to allnodes), that adds a reference
|
|
|
|
// to the root node, preventing it from being deleted.
|
|
|
|
SDNode *DummyNode = new SDNode(ISD::EntryToken, getRoot());
|
|
|
|
|
|
|
|
DeleteNodeIfDead(N, &AllNodeSet);
|
|
|
|
|
|
|
|
Restart:
|
|
|
|
unsigned NumNodes = AllNodeSet.size();
|
|
|
|
for (std::set<SDNode*>::iterator I = AllNodeSet.begin(), E = AllNodeSet.end();
|
|
|
|
I != E; ++I) {
|
|
|
|
// Try to delete this node.
|
|
|
|
DeleteNodeIfDead(*I, &AllNodeSet);
|
|
|
|
|
|
|
|
// If we actually deleted any nodes, do not use invalid iterators in
|
|
|
|
// AllNodeSet.
|
|
|
|
if (AllNodeSet.size() != NumNodes)
|
|
|
|
goto Restart;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Restore AllNodes.
|
|
|
|
if (AllNodes.size() != NumNodes)
|
|
|
|
AllNodes.assign(AllNodeSet.begin(), AllNodeSet.end());
|
|
|
|
|
|
|
|
// If the root changed (e.g. it was a dead load, update the root).
|
|
|
|
setRoot(DummyNode->getOperand(0));
|
|
|
|
|
|
|
|
// Now that we are done with the dummy node, delete it.
|
|
|
|
DummyNode->getOperand(0).Val->removeUser(DummyNode);
|
|
|
|
delete DummyNode;
|
|
|
|
}
|
|
|
|
|
|
|
|
void SelectionDAG::DeleteNodeIfDead(SDNode *N, void *NodeSet) {
|
|
|
|
if (!N->use_empty())
|
|
|
|
return;
|
|
|
|
|
|
|
|
// Okay, we really are going to delete this node. First take this out of the
|
|
|
|
// appropriate CSE map.
|
|
|
|
switch (N->getOpcode()) {
|
|
|
|
case ISD::Constant:
|
|
|
|
Constants.erase(std::make_pair(cast<ConstantSDNode>(N)->getValue(),
|
|
|
|
N->getValueType(0)));
|
|
|
|
break;
|
|
|
|
case ISD::ConstantFP:
|
|
|
|
ConstantFPs.erase(std::make_pair(cast<ConstantFPSDNode>(N)->getValue(),
|
|
|
|
N->getValueType(0)));
|
|
|
|
break;
|
|
|
|
case ISD::GlobalAddress:
|
|
|
|
GlobalValues.erase(cast<GlobalAddressSDNode>(N)->getGlobal());
|
|
|
|
break;
|
|
|
|
case ISD::FrameIndex:
|
|
|
|
FrameIndices.erase(cast<FrameIndexSDNode>(N)->getIndex());
|
|
|
|
break;
|
|
|
|
case ISD::ConstantPool:
|
|
|
|
ConstantPoolIndices.erase(cast<ConstantPoolSDNode>(N)->getIndex());
|
|
|
|
break;
|
|
|
|
case ISD::BasicBlock:
|
|
|
|
BBNodes.erase(cast<BasicBlockSDNode>(N)->getBasicBlock());
|
|
|
|
break;
|
|
|
|
case ISD::ExternalSymbol:
|
|
|
|
ExternalSymbols.erase(cast<ExternalSymbolSDNode>(N)->getSymbol());
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ISD::LOAD:
|
|
|
|
Loads.erase(std::make_pair(N->getOperand(1),
|
|
|
|
std::make_pair(N->getOperand(0),
|
|
|
|
N->getValueType(0))));
|
|
|
|
break;
|
|
|
|
case ISD::SETCC:
|
|
|
|
SetCCs.erase(std::make_pair(std::make_pair(N->getOperand(0),
|
|
|
|
N->getOperand(1)),
|
|
|
|
cast<SetCCSDNode>(N)->getCondition()));
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
if (N->getNumOperands() == 1)
|
|
|
|
UnaryOps.erase(std::make_pair(N->getOpcode(),
|
|
|
|
std::make_pair(N->getOperand(0),
|
|
|
|
N->getValueType(0))));
|
|
|
|
else if (N->getNumOperands() == 2)
|
|
|
|
BinaryOps.erase(std::make_pair(N->getOpcode(),
|
|
|
|
std::make_pair(N->getOperand(0),
|
|
|
|
N->getOperand(1))));
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Next, brutally remove the operand list.
|
|
|
|
while (!N->Operands.empty()) {
|
2005-01-07 23:32:00 +00:00
|
|
|
SDNode *O = N->Operands.back().Val;
|
2005-01-07 21:09:16 +00:00
|
|
|
N->Operands.pop_back();
|
2005-01-07 23:32:00 +00:00
|
|
|
O->removeUser(N);
|
|
|
|
|
|
|
|
// Now that we removed this operand, see if there are no uses of it left.
|
|
|
|
DeleteNodeIfDead(O, NodeSet);
|
2005-01-07 21:09:16 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// Remove the node from the nodes set and delete it.
|
|
|
|
std::set<SDNode*> &AllNodeSet = *(std::set<SDNode*>*)NodeSet;
|
|
|
|
AllNodeSet.erase(N);
|
|
|
|
|
|
|
|
// Now that the node is gone, check to see if any of the operands of this node
|
|
|
|
// are dead now.
|
2005-01-07 23:32:00 +00:00
|
|
|
delete N;
|
2005-01-07 21:09:16 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2003-08-11 14:57:33 +00:00
|
|
|
SelectionDAG::~SelectionDAG() {
|
|
|
|
for (unsigned i = 0, e = AllNodes.size(); i != e; ++i)
|
|
|
|
delete AllNodes[i];
|
|
|
|
}
|
|
|
|
|
2005-01-07 07:46:32 +00:00
|
|
|
SDOperand SelectionDAG::getConstant(uint64_t Val, MVT::ValueType VT) {
|
|
|
|
assert(MVT::isInteger(VT) && "Cannot create FP integer constant!");
|
|
|
|
// Mask out any bits that are not valid for this constant.
|
2005-01-08 06:24:30 +00:00
|
|
|
if (VT != MVT::i64)
|
|
|
|
Val &= ((uint64_t)1 << MVT::getSizeInBits(VT)) - 1;
|
|
|
|
|
2005-01-07 07:46:32 +00:00
|
|
|
SDNode *&N = Constants[std::make_pair(Val, VT)];
|
|
|
|
if (N) return SDOperand(N, 0);
|
|
|
|
N = new ConstantSDNode(Val, VT);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
2003-08-11 14:57:33 +00:00
|
|
|
}
|
|
|
|
|
2005-01-07 07:46:32 +00:00
|
|
|
SDOperand SelectionDAG::getConstantFP(double Val, MVT::ValueType VT) {
|
|
|
|
assert(MVT::isFloatingPoint(VT) && "Cannot create integer FP constant!");
|
|
|
|
if (VT == MVT::f32)
|
|
|
|
Val = (float)Val; // Mask out extra precision.
|
|
|
|
|
|
|
|
SDNode *&N = ConstantFPs[std::make_pair(Val, VT)];
|
|
|
|
if (N) return SDOperand(N, 0);
|
|
|
|
N = new ConstantFPSDNode(Val, VT);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
SDOperand SelectionDAG::getGlobalAddress(const GlobalValue *GV,
|
|
|
|
MVT::ValueType VT) {
|
|
|
|
SDNode *&N = GlobalValues[GV];
|
|
|
|
if (N) return SDOperand(N, 0);
|
|
|
|
N = new GlobalAddressSDNode(GV,VT);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
SDOperand SelectionDAG::getFrameIndex(int FI, MVT::ValueType VT) {
|
|
|
|
SDNode *&N = FrameIndices[FI];
|
|
|
|
if (N) return SDOperand(N, 0);
|
|
|
|
N = new FrameIndexSDNode(FI, VT);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
SDOperand SelectionDAG::getConstantPool(unsigned CPIdx, MVT::ValueType VT) {
|
|
|
|
SDNode *N = ConstantPoolIndices[CPIdx];
|
|
|
|
if (N) return SDOperand(N, 0);
|
|
|
|
N = new ConstantPoolSDNode(CPIdx, VT);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
SDOperand SelectionDAG::getBasicBlock(MachineBasicBlock *MBB) {
|
|
|
|
SDNode *&N = BBNodes[MBB];
|
|
|
|
if (N) return SDOperand(N, 0);
|
|
|
|
N = new BasicBlockSDNode(MBB);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
SDOperand SelectionDAG::getExternalSymbol(const char *Sym, MVT::ValueType VT) {
|
|
|
|
SDNode *&N = ExternalSymbols[Sym];
|
|
|
|
if (N) return SDOperand(N, 0);
|
|
|
|
N = new ExternalSymbolSDNode(Sym, VT);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
SDOperand SelectionDAG::getSetCC(ISD::CondCode Cond, SDOperand N1,
|
|
|
|
SDOperand N2) {
|
|
|
|
// These setcc operations always fold.
|
|
|
|
switch (Cond) {
|
|
|
|
default: break;
|
|
|
|
case ISD::SETFALSE:
|
|
|
|
case ISD::SETFALSE2: return getConstant(0, MVT::i1);
|
|
|
|
case ISD::SETTRUE:
|
|
|
|
case ISD::SETTRUE2: return getConstant(1, MVT::i1);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1.Val))
|
|
|
|
if (ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2.Val)) {
|
|
|
|
uint64_t C1 = N1C->getValue(), C2 = N2C->getValue();
|
|
|
|
|
|
|
|
// Sign extend the operands if required
|
|
|
|
if (ISD::isSignedIntSetCC(Cond)) {
|
|
|
|
C1 = N1C->getSignExtended();
|
|
|
|
C2 = N2C->getSignExtended();
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (Cond) {
|
|
|
|
default: assert(0 && "Unknown integer setcc!");
|
|
|
|
case ISD::SETEQ: return getConstant(C1 == C2, MVT::i1);
|
|
|
|
case ISD::SETNE: return getConstant(C1 != C2, MVT::i1);
|
|
|
|
case ISD::SETULT: return getConstant(C1 < C2, MVT::i1);
|
|
|
|
case ISD::SETUGT: return getConstant(C1 > C2, MVT::i1);
|
|
|
|
case ISD::SETULE: return getConstant(C1 <= C2, MVT::i1);
|
|
|
|
case ISD::SETUGE: return getConstant(C1 >= C2, MVT::i1);
|
2005-01-10 01:16:03 +00:00
|
|
|
case ISD::SETLT: return getConstant((int64_t)C1 < (int64_t)C2, MVT::i1);
|
|
|
|
case ISD::SETGT: return getConstant((int64_t)C1 > (int64_t)C2, MVT::i1);
|
|
|
|
case ISD::SETLE: return getConstant((int64_t)C1 <= (int64_t)C2, MVT::i1);
|
|
|
|
case ISD::SETGE: return getConstant((int64_t)C1 >= (int64_t)C2, MVT::i1);
|
2005-01-07 07:46:32 +00:00
|
|
|
}
|
|
|
|
} else {
|
|
|
|
// Ensure that the constant occurs on the RHS.
|
|
|
|
Cond = ISD::getSetCCSwappedOperands(Cond);
|
|
|
|
std::swap(N1, N2);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ConstantFPSDNode *N1C = dyn_cast<ConstantFPSDNode>(N1.Val))
|
|
|
|
if (ConstantFPSDNode *N2C = dyn_cast<ConstantFPSDNode>(N2.Val)) {
|
|
|
|
double C1 = N1C->getValue(), C2 = N2C->getValue();
|
|
|
|
|
|
|
|
switch (Cond) {
|
|
|
|
default: break; // FIXME: Implement the rest of these!
|
|
|
|
case ISD::SETEQ: return getConstant(C1 == C2, MVT::i1);
|
|
|
|
case ISD::SETNE: return getConstant(C1 != C2, MVT::i1);
|
|
|
|
case ISD::SETLT: return getConstant((int64_t)C1 < (int64_t)C2, MVT::i1);
|
|
|
|
case ISD::SETGT: return getConstant((int64_t)C1 < (int64_t)C2, MVT::i1);
|
|
|
|
case ISD::SETLE: return getConstant((int64_t)C1 < (int64_t)C2, MVT::i1);
|
|
|
|
case ISD::SETGE: return getConstant((int64_t)C1 < (int64_t)C2, MVT::i1);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
// Ensure that the constant occurs on the RHS.
|
|
|
|
Cond = ISD::getSetCCSwappedOperands(Cond);
|
|
|
|
std::swap(N1, N2);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (N1 == N2) {
|
|
|
|
// We can always fold X == Y for integer setcc's.
|
|
|
|
if (MVT::isInteger(N1.getValueType()))
|
|
|
|
return getConstant(ISD::isTrueWhenEqual(Cond), MVT::i1);
|
|
|
|
unsigned UOF = ISD::getUnorderedFlavor(Cond);
|
|
|
|
if (UOF == 2) // FP operators that are undefined on NaNs.
|
|
|
|
return getConstant(ISD::isTrueWhenEqual(Cond), MVT::i1);
|
|
|
|
if (UOF == ISD::isTrueWhenEqual(Cond))
|
|
|
|
return getConstant(UOF, MVT::i1);
|
|
|
|
// Otherwise, we can't fold it. However, we can simplify it to SETUO/SETO
|
|
|
|
// if it is not already.
|
|
|
|
Cond = UOF == 0 ? ISD::SETUO : ISD::SETO;
|
|
|
|
}
|
|
|
|
|
Add some folds for == and != comparisons. This allows us to
codegen this loop in stepanov:
no_exit.i: ; preds = %entry, %no_exit.i, %then.i, %_Z5checkd.exit
%i.0.0 = phi int [ 0, %entry ], [ %i.0.0, %no_exit.i ], [ %inc.0, %_Z5checkd.exit ], [ %inc.012, %then.i ] ; <int> [#uses=3]
%indvar = phi uint [ %indvar.next, %no_exit.i ], [ 0, %entry ], [ 0, %then.i ], [ 0, %_Z5checkd.exit ] ; <uint> [#uses=3]
%result_addr.i.0 = phi double [ %tmp.4.i.i, %no_exit.i ], [ 0.000000e+00, %entry ], [ 0.000000e+00, %then.i ], [ 0.000000e+00, %_Z5checkd.exit ] ; <double> [#uses=1]
%first_addr.0.i.2.rec = cast uint %indvar to int ; <int> [#uses=1]
%first_addr.0.i.2 = getelementptr [2000 x double]* %data, int 0, uint %indvar ; <double*> [#uses=1]
%inc.i.rec = add int %first_addr.0.i.2.rec, 1 ; <int> [#uses=1]
%inc.i = getelementptr [2000 x double]* %data, int 0, int %inc.i.rec ; <double*> [#uses=1]
%tmp.3.i.i = load double* %first_addr.0.i.2 ; <double> [#uses=1]
%tmp.4.i.i = add double %result_addr.i.0, %tmp.3.i.i ; <double> [#uses=2]
%tmp.2.i = seteq double* %inc.i, getelementptr ([2000 x double]* %data, int 0, int 2000) ; <bool> [#uses=1]
%indvar.next = add uint %indvar, 1 ; <uint> [#uses=1]
br bool %tmp.2.i, label %_Z10accumulateIPddET0_T_S2_S1_.exit, label %no_exit.i
To this:
.LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i
fldl data(,%eax,8)
fldl 16(%esp)
faddp %st(1)
fstpl 16(%esp)
incl %eax
movl %eax, %ecx
shll $3, %ecx
cmpl $16000, %ecx
#FP_REG_KILL
jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i
instead of this:
.LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i
fldl data(,%eax,8)
fldl 16(%esp)
faddp %st(1)
fstpl 16(%esp)
incl %eax
leal data(,%eax,8), %ecx
leal data+16000, %edx
cmpl %edx, %ecx
#FP_REG_KILL
jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19425 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 20:52:51 +00:00
|
|
|
if ((Cond == ISD::SETEQ || Cond == ISD::SETNE) &&
|
Implement a couple of more simplifications. This lets us codegen:
int test2(int * P, int* Q, int A, int B) {
return P+A == P;
}
into:
test2:
movl 4(%esp), %eax
movl 12(%esp), %eax
shll $2, %eax
cmpl $0, %eax
sete %al
movzbl %al, %eax
ret
instead of:
test2:
movl 4(%esp), %eax
movl 12(%esp), %ecx
leal (%eax,%ecx,4), %ecx
cmpl %eax, %ecx
sete %al
movzbl %al, %eax
ret
ICC is producing worse code:
test2:
movl 4(%esp), %eax #8.5
movl 12(%esp), %edx #8.5
lea (%edx,%edx), %ecx #9.9
addl %ecx, %ecx #9.9
addl %eax, %ecx #9.9
cmpl %eax, %ecx #9.16
movl $0, %eax #9.16
sete %al #9.16
ret #9.16
as is GCC (looks like our old code):
test2:
movl 4(%esp), %edx
movl 12(%esp), %eax
leal (%edx,%eax,4), %ecx
cmpl %edx, %ecx
sete %al
movzbl %al, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19430 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 02:03:02 +00:00
|
|
|
MVT::isInteger(N1.getValueType())) {
|
|
|
|
if (N1.getOpcode() == ISD::ADD || N1.getOpcode() == ISD::SUB ||
|
|
|
|
N1.getOpcode() == ISD::XOR) {
|
|
|
|
// Simplify (X+Y) == (X+Z) --> Y == Z
|
|
|
|
if (N1.getOpcode() == N2.getOpcode()) {
|
|
|
|
if (N1.getOperand(0) == N2.getOperand(0))
|
Add some folds for == and != comparisons. This allows us to
codegen this loop in stepanov:
no_exit.i: ; preds = %entry, %no_exit.i, %then.i, %_Z5checkd.exit
%i.0.0 = phi int [ 0, %entry ], [ %i.0.0, %no_exit.i ], [ %inc.0, %_Z5checkd.exit ], [ %inc.012, %then.i ] ; <int> [#uses=3]
%indvar = phi uint [ %indvar.next, %no_exit.i ], [ 0, %entry ], [ 0, %then.i ], [ 0, %_Z5checkd.exit ] ; <uint> [#uses=3]
%result_addr.i.0 = phi double [ %tmp.4.i.i, %no_exit.i ], [ 0.000000e+00, %entry ], [ 0.000000e+00, %then.i ], [ 0.000000e+00, %_Z5checkd.exit ] ; <double> [#uses=1]
%first_addr.0.i.2.rec = cast uint %indvar to int ; <int> [#uses=1]
%first_addr.0.i.2 = getelementptr [2000 x double]* %data, int 0, uint %indvar ; <double*> [#uses=1]
%inc.i.rec = add int %first_addr.0.i.2.rec, 1 ; <int> [#uses=1]
%inc.i = getelementptr [2000 x double]* %data, int 0, int %inc.i.rec ; <double*> [#uses=1]
%tmp.3.i.i = load double* %first_addr.0.i.2 ; <double> [#uses=1]
%tmp.4.i.i = add double %result_addr.i.0, %tmp.3.i.i ; <double> [#uses=2]
%tmp.2.i = seteq double* %inc.i, getelementptr ([2000 x double]* %data, int 0, int 2000) ; <bool> [#uses=1]
%indvar.next = add uint %indvar, 1 ; <uint> [#uses=1]
br bool %tmp.2.i, label %_Z10accumulateIPddET0_T_S2_S1_.exit, label %no_exit.i
To this:
.LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i
fldl data(,%eax,8)
fldl 16(%esp)
faddp %st(1)
fstpl 16(%esp)
incl %eax
movl %eax, %ecx
shll $3, %ecx
cmpl $16000, %ecx
#FP_REG_KILL
jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i
instead of this:
.LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i
fldl data(,%eax,8)
fldl 16(%esp)
faddp %st(1)
fstpl 16(%esp)
incl %eax
leal data(,%eax,8), %ecx
leal data+16000, %edx
cmpl %edx, %ecx
#FP_REG_KILL
jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19425 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 20:52:51 +00:00
|
|
|
return getSetCC(Cond, N1.getOperand(1), N2.getOperand(1));
|
Implement a couple of more simplifications. This lets us codegen:
int test2(int * P, int* Q, int A, int B) {
return P+A == P;
}
into:
test2:
movl 4(%esp), %eax
movl 12(%esp), %eax
shll $2, %eax
cmpl $0, %eax
sete %al
movzbl %al, %eax
ret
instead of:
test2:
movl 4(%esp), %eax
movl 12(%esp), %ecx
leal (%eax,%ecx,4), %ecx
cmpl %eax, %ecx
sete %al
movzbl %al, %eax
ret
ICC is producing worse code:
test2:
movl 4(%esp), %eax #8.5
movl 12(%esp), %edx #8.5
lea (%edx,%edx), %ecx #9.9
addl %ecx, %ecx #9.9
addl %eax, %ecx #9.9
cmpl %eax, %ecx #9.16
movl $0, %eax #9.16
sete %al #9.16
ret #9.16
as is GCC (looks like our old code):
test2:
movl 4(%esp), %edx
movl 12(%esp), %eax
leal (%edx,%eax,4), %ecx
cmpl %edx, %ecx
sete %al
movzbl %al, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19430 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 02:03:02 +00:00
|
|
|
if (N1.getOperand(1) == N2.getOperand(1))
|
|
|
|
return getSetCC(Cond, N1.getOperand(0), N2.getOperand(0));
|
|
|
|
if (isCommutativeBinOp(N1.getOpcode())) {
|
|
|
|
// If X op Y == Y op X, try other combinations.
|
|
|
|
if (N1.getOperand(0) == N2.getOperand(1))
|
|
|
|
return getSetCC(Cond, N1.getOperand(1), N2.getOperand(0));
|
|
|
|
if (N1.getOperand(1) == N2.getOperand(0))
|
|
|
|
return getSetCC(Cond, N1.getOperand(1), N2.getOperand(1));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Simplify (X+Z) == X --> Z == 0
|
|
|
|
if (N1.getOperand(0) == N2)
|
|
|
|
return getSetCC(Cond, N1.getOperand(1),
|
|
|
|
getConstant(0, N1.getValueType()));
|
|
|
|
if (N1.getOperand(1) == N2) {
|
|
|
|
if (isCommutativeBinOp(N1.getOpcode()))
|
|
|
|
return getSetCC(Cond, N1.getOperand(0),
|
|
|
|
getConstant(0, N1.getValueType()));
|
|
|
|
else {
|
|
|
|
assert(N1.getOpcode() == ISD::SUB && "Unexpected operation!");
|
|
|
|
// (Z-X) == X --> Z == X<<1
|
|
|
|
return getSetCC(Cond, N1.getOperand(0),
|
|
|
|
getNode(ISD::SHL, N2.getValueType(),
|
|
|
|
N2, getConstant(1, MVT::i8)));
|
|
|
|
}
|
Add some folds for == and != comparisons. This allows us to
codegen this loop in stepanov:
no_exit.i: ; preds = %entry, %no_exit.i, %then.i, %_Z5checkd.exit
%i.0.0 = phi int [ 0, %entry ], [ %i.0.0, %no_exit.i ], [ %inc.0, %_Z5checkd.exit ], [ %inc.012, %then.i ] ; <int> [#uses=3]
%indvar = phi uint [ %indvar.next, %no_exit.i ], [ 0, %entry ], [ 0, %then.i ], [ 0, %_Z5checkd.exit ] ; <uint> [#uses=3]
%result_addr.i.0 = phi double [ %tmp.4.i.i, %no_exit.i ], [ 0.000000e+00, %entry ], [ 0.000000e+00, %then.i ], [ 0.000000e+00, %_Z5checkd.exit ] ; <double> [#uses=1]
%first_addr.0.i.2.rec = cast uint %indvar to int ; <int> [#uses=1]
%first_addr.0.i.2 = getelementptr [2000 x double]* %data, int 0, uint %indvar ; <double*> [#uses=1]
%inc.i.rec = add int %first_addr.0.i.2.rec, 1 ; <int> [#uses=1]
%inc.i = getelementptr [2000 x double]* %data, int 0, int %inc.i.rec ; <double*> [#uses=1]
%tmp.3.i.i = load double* %first_addr.0.i.2 ; <double> [#uses=1]
%tmp.4.i.i = add double %result_addr.i.0, %tmp.3.i.i ; <double> [#uses=2]
%tmp.2.i = seteq double* %inc.i, getelementptr ([2000 x double]* %data, int 0, int 2000) ; <bool> [#uses=1]
%indvar.next = add uint %indvar, 1 ; <uint> [#uses=1]
br bool %tmp.2.i, label %_Z10accumulateIPddET0_T_S2_S1_.exit, label %no_exit.i
To this:
.LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i
fldl data(,%eax,8)
fldl 16(%esp)
faddp %st(1)
fstpl 16(%esp)
incl %eax
movl %eax, %ecx
shll $3, %ecx
cmpl $16000, %ecx
#FP_REG_KILL
jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i
instead of this:
.LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i
fldl data(,%eax,8)
fldl 16(%esp)
faddp %st(1)
fstpl 16(%esp)
incl %eax
leal data(,%eax,8), %ecx
leal data+16000, %edx
cmpl %edx, %ecx
#FP_REG_KILL
jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19425 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 20:52:51 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
Implement a couple of more simplifications. This lets us codegen:
int test2(int * P, int* Q, int A, int B) {
return P+A == P;
}
into:
test2:
movl 4(%esp), %eax
movl 12(%esp), %eax
shll $2, %eax
cmpl $0, %eax
sete %al
movzbl %al, %eax
ret
instead of:
test2:
movl 4(%esp), %eax
movl 12(%esp), %ecx
leal (%eax,%ecx,4), %ecx
cmpl %eax, %ecx
sete %al
movzbl %al, %eax
ret
ICC is producing worse code:
test2:
movl 4(%esp), %eax #8.5
movl 12(%esp), %edx #8.5
lea (%edx,%edx), %ecx #9.9
addl %ecx, %ecx #9.9
addl %eax, %ecx #9.9
cmpl %eax, %ecx #9.16
movl $0, %eax #9.16
sete %al #9.16
ret #9.16
as is GCC (looks like our old code):
test2:
movl 4(%esp), %edx
movl 12(%esp), %eax
leal (%edx,%eax,4), %ecx
cmpl %edx, %ecx
sete %al
movzbl %al, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19430 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 02:03:02 +00:00
|
|
|
if (N2.getOpcode() == ISD::ADD || N2.getOpcode() == ISD::SUB ||
|
|
|
|
N2.getOpcode() == ISD::XOR) {
|
|
|
|
// Simplify X == (X+Z) --> Z == 0
|
|
|
|
if (N2.getOperand(0) == N1)
|
|
|
|
return getSetCC(Cond, N2.getOperand(1),
|
|
|
|
getConstant(0, N2.getValueType()));
|
|
|
|
else if (N2.getOperand(1) == N1)
|
|
|
|
return getSetCC(Cond, N2.getOperand(0),
|
|
|
|
getConstant(0, N2.getValueType()));
|
|
|
|
}
|
|
|
|
}
|
2005-01-07 07:46:32 +00:00
|
|
|
|
|
|
|
SetCCSDNode *&N = SetCCs[std::make_pair(std::make_pair(N1, N2), Cond)];
|
|
|
|
if (N) return SDOperand(N, 0);
|
|
|
|
N = new SetCCSDNode(Cond, N1, N2);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/// getNode - Gets or creates the specified node.
|
2003-08-11 14:57:33 +00:00
|
|
|
///
|
2005-01-07 07:46:32 +00:00
|
|
|
SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT) {
|
|
|
|
SDNode *N = new SDNode(Opcode, VT);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static const Type *getTypeFor(MVT::ValueType VT) {
|
|
|
|
switch (VT) {
|
|
|
|
default: assert(0 && "Unknown MVT!");
|
|
|
|
case MVT::i1: return Type::BoolTy;
|
|
|
|
case MVT::i8: return Type::UByteTy;
|
|
|
|
case MVT::i16: return Type::UShortTy;
|
|
|
|
case MVT::i32: return Type::UIntTy;
|
|
|
|
case MVT::i64: return Type::ULongTy;
|
|
|
|
case MVT::f32: return Type::FloatTy;
|
|
|
|
case MVT::f64: return Type::DoubleTy;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
|
|
|
|
SDOperand Operand) {
|
|
|
|
if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Operand.Val)) {
|
|
|
|
uint64_t Val = C->getValue();
|
|
|
|
switch (Opcode) {
|
|
|
|
default: break;
|
|
|
|
case ISD::SIGN_EXTEND: return getConstant(C->getSignExtended(), VT);
|
|
|
|
case ISD::ZERO_EXTEND: return getConstant(Val, VT);
|
|
|
|
case ISD::TRUNCATE: return getConstant(Val, VT);
|
2005-01-08 08:08:56 +00:00
|
|
|
case ISD::SINT_TO_FP: return getConstantFP(C->getSignExtended(), VT);
|
|
|
|
case ISD::UINT_TO_FP: return getConstantFP(C->getValue(), VT);
|
2005-01-07 07:46:32 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ConstantFPSDNode *C = dyn_cast<ConstantFPSDNode>(Operand.Val))
|
|
|
|
switch (Opcode) {
|
|
|
|
case ISD::FP_ROUND:
|
|
|
|
case ISD::FP_EXTEND:
|
|
|
|
return getConstantFP(C->getValue(), VT);
|
2005-01-08 08:08:56 +00:00
|
|
|
case ISD::FP_TO_SINT:
|
|
|
|
return getConstant((int64_t)C->getValue(), VT);
|
|
|
|
case ISD::FP_TO_UINT:
|
|
|
|
return getConstant((uint64_t)C->getValue(), VT);
|
2005-01-07 07:46:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
unsigned OpOpcode = Operand.Val->getOpcode();
|
|
|
|
switch (Opcode) {
|
|
|
|
case ISD::SIGN_EXTEND:
|
|
|
|
if (Operand.getValueType() == VT) return Operand; // noop extension
|
|
|
|
if (OpOpcode == ISD::SIGN_EXTEND || OpOpcode == ISD::ZERO_EXTEND)
|
|
|
|
return getNode(OpOpcode, VT, Operand.Val->getOperand(0));
|
|
|
|
break;
|
|
|
|
case ISD::ZERO_EXTEND:
|
|
|
|
if (Operand.getValueType() == VT) return Operand; // noop extension
|
2005-01-12 18:51:15 +00:00
|
|
|
if (OpOpcode == ISD::ZERO_EXTEND)
|
|
|
|
return getNode(ISD::ZERO_EXTEND, VT, Operand.Val->getOperand(0));
|
2005-01-07 07:46:32 +00:00
|
|
|
break;
|
|
|
|
case ISD::TRUNCATE:
|
|
|
|
if (Operand.getValueType() == VT) return Operand; // noop truncate
|
|
|
|
if (OpOpcode == ISD::TRUNCATE)
|
|
|
|
return getNode(ISD::TRUNCATE, VT, Operand.Val->getOperand(0));
|
2005-01-07 21:56:24 +00:00
|
|
|
else if (OpOpcode == ISD::ZERO_EXTEND || OpOpcode == ISD::SIGN_EXTEND) {
|
|
|
|
// If the source is smaller than the dest, we still need an extend.
|
|
|
|
if (Operand.Val->getOperand(0).getValueType() < VT)
|
|
|
|
return getNode(OpOpcode, VT, Operand.Val->getOperand(0));
|
|
|
|
else if (Operand.Val->getOperand(0).getValueType() > VT)
|
|
|
|
return getNode(ISD::TRUNCATE, VT, Operand.Val->getOperand(0));
|
|
|
|
else
|
|
|
|
return Operand.Val->getOperand(0);
|
|
|
|
}
|
2005-01-07 07:46:32 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
SDNode *&N = UnaryOps[std::make_pair(Opcode, std::make_pair(Operand, VT))];
|
|
|
|
if (N) return SDOperand(N, 0);
|
|
|
|
N = new SDNode(Opcode, Operand);
|
|
|
|
N->setValueTypes(VT);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
|
|
|
|
SDOperand N1, SDOperand N2) {
|
|
|
|
ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1.Val);
|
|
|
|
ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2.Val);
|
|
|
|
if (N1C) {
|
|
|
|
if (N2C) {
|
|
|
|
uint64_t C1 = N1C->getValue(), C2 = N2C->getValue();
|
|
|
|
switch (Opcode) {
|
|
|
|
case ISD::ADD: return getConstant(C1 + C2, VT);
|
|
|
|
case ISD::SUB: return getConstant(C1 - C2, VT);
|
|
|
|
case ISD::MUL: return getConstant(C1 * C2, VT);
|
|
|
|
case ISD::UDIV:
|
|
|
|
if (C2) return getConstant(C1 / C2, VT);
|
|
|
|
break;
|
|
|
|
case ISD::UREM :
|
|
|
|
if (C2) return getConstant(C1 % C2, VT);
|
|
|
|
break;
|
|
|
|
case ISD::SDIV :
|
|
|
|
if (C2) return getConstant(N1C->getSignExtended() /
|
|
|
|
N2C->getSignExtended(), VT);
|
|
|
|
break;
|
|
|
|
case ISD::SREM :
|
|
|
|
if (C2) return getConstant(N1C->getSignExtended() %
|
|
|
|
N2C->getSignExtended(), VT);
|
|
|
|
break;
|
|
|
|
case ISD::AND : return getConstant(C1 & C2, VT);
|
|
|
|
case ISD::OR : return getConstant(C1 | C2, VT);
|
|
|
|
case ISD::XOR : return getConstant(C1 ^ C2, VT);
|
2005-01-10 00:07:15 +00:00
|
|
|
case ISD::SHL : return getConstant(C1 << (int)C2, VT);
|
|
|
|
case ISD::SRL : return getConstant(C1 >> (unsigned)C2, VT);
|
|
|
|
case ISD::SRA : return getConstant(N1C->getSignExtended() >>(int)C2, VT);
|
2005-01-07 07:46:32 +00:00
|
|
|
default: break;
|
|
|
|
}
|
|
|
|
|
|
|
|
} else { // Cannonicalize constant to RHS if commutative
|
|
|
|
if (isCommutativeBinOp(Opcode)) {
|
|
|
|
std::swap(N1C, N2C);
|
|
|
|
std::swap(N1, N2);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (N2C) {
|
|
|
|
uint64_t C2 = N2C->getValue();
|
|
|
|
|
|
|
|
switch (Opcode) {
|
|
|
|
case ISD::ADD:
|
|
|
|
if (!C2) return N1; // add X, 0 -> X
|
|
|
|
break;
|
|
|
|
case ISD::SUB:
|
|
|
|
if (!C2) return N1; // sub X, 0 -> X
|
|
|
|
break;
|
|
|
|
case ISD::MUL:
|
|
|
|
if (!C2) return N2; // mul X, 0 -> 0
|
|
|
|
if (N2C->isAllOnesValue()) // mul X, -1 -> 0-X
|
|
|
|
return getNode(ISD::SUB, VT, getConstant(0, VT), N1);
|
|
|
|
|
|
|
|
// FIXME: This should only be done if the target supports shift
|
|
|
|
// operations.
|
|
|
|
if ((C2 & C2-1) == 0) {
|
|
|
|
SDOperand ShAmt = getConstant(ExactLog2(C2), MVT::i8);
|
|
|
|
return getNode(ISD::SHL, VT, N1, ShAmt);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case ISD::UDIV:
|
|
|
|
// FIXME: This should only be done if the target supports shift
|
|
|
|
// operations.
|
|
|
|
if ((C2 & C2-1) == 0 && C2) {
|
|
|
|
SDOperand ShAmt = getConstant(ExactLog2(C2), MVT::i8);
|
|
|
|
return getNode(ISD::SRL, VT, N1, ShAmt);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
2005-01-11 04:25:13 +00:00
|
|
|
case ISD::SHL:
|
|
|
|
case ISD::SRL:
|
|
|
|
case ISD::SRA:
|
|
|
|
if (C2 == 0) return N1;
|
|
|
|
break;
|
|
|
|
|
2005-01-07 07:46:32 +00:00
|
|
|
case ISD::AND:
|
|
|
|
if (!C2) return N2; // X and 0 -> 0
|
|
|
|
if (N2C->isAllOnesValue())
|
|
|
|
return N1; // X and -1 -> X
|
|
|
|
break;
|
|
|
|
case ISD::OR:
|
|
|
|
if (!C2)return N1; // X or 0 -> X
|
|
|
|
if (N2C->isAllOnesValue())
|
|
|
|
return N2; // X or -1 -> -1
|
|
|
|
break;
|
|
|
|
case ISD::XOR:
|
|
|
|
if (!C2) return N1; // X xor 0 -> X
|
|
|
|
if (N2C->isAllOnesValue()) {
|
|
|
|
if (SetCCSDNode *SetCC = dyn_cast<SetCCSDNode>(N1.Val)){
|
|
|
|
// !(X op Y) -> (X !op Y)
|
|
|
|
bool isInteger = MVT::isInteger(SetCC->getOperand(0).getValueType());
|
|
|
|
return getSetCC(ISD::getSetCCInverse(SetCC->getCondition(),isInteger),
|
|
|
|
SetCC->getOperand(0), SetCC->getOperand(1));
|
|
|
|
} else if (N1.getOpcode() == ISD::AND || N1.getOpcode() == ISD::OR) {
|
|
|
|
SDNode *Op = N1.Val;
|
|
|
|
// !(X or Y) -> (!X and !Y) iff X or Y are freely invertible
|
|
|
|
// !(X and Y) -> (!X or !Y) iff X or Y are freely invertible
|
|
|
|
SDOperand LHS = Op->getOperand(0), RHS = Op->getOperand(1);
|
|
|
|
if (isInvertibleForFree(RHS) || isInvertibleForFree(LHS)) {
|
|
|
|
LHS = getNode(ISD::XOR, VT, LHS, N2); // RHS = ~LHS
|
|
|
|
RHS = getNode(ISD::XOR, VT, RHS, N2); // RHS = ~RHS
|
|
|
|
if (Op->getOpcode() == ISD::AND)
|
|
|
|
return getNode(ISD::OR, VT, LHS, RHS);
|
|
|
|
return getNode(ISD::AND, VT, LHS, RHS);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// X xor -1 -> not(x) ?
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Reassociate ((X op C1) op C2) if possible.
|
|
|
|
if (N1.getOpcode() == Opcode && isAssociativeBinOp(Opcode))
|
|
|
|
if (ConstantSDNode *N3C = dyn_cast<ConstantSDNode>(N1.Val->getOperand(1)))
|
2005-01-07 22:44:09 +00:00
|
|
|
return getNode(Opcode, VT, N1.Val->getOperand(0),
|
2005-01-07 07:46:32 +00:00
|
|
|
getNode(Opcode, VT, N2, N1.Val->getOperand(1)));
|
|
|
|
}
|
|
|
|
|
|
|
|
ConstantFPSDNode *N1CFP = dyn_cast<ConstantFPSDNode>(N1.Val);
|
|
|
|
ConstantFPSDNode *N2CFP = dyn_cast<ConstantFPSDNode>(N2.Val);
|
|
|
|
if (N1CFP)
|
|
|
|
if (N2CFP) {
|
|
|
|
double C1 = N1CFP->getValue(), C2 = N2CFP->getValue();
|
|
|
|
switch (Opcode) {
|
|
|
|
case ISD::ADD: return getConstantFP(C1 + C2, VT);
|
|
|
|
case ISD::SUB: return getConstantFP(C1 - C2, VT);
|
|
|
|
case ISD::MUL: return getConstantFP(C1 * C2, VT);
|
|
|
|
case ISD::SDIV:
|
|
|
|
if (C2) return getConstantFP(C1 / C2, VT);
|
|
|
|
break;
|
|
|
|
case ISD::SREM :
|
|
|
|
if (C2) return getConstantFP(fmod(C1, C2), VT);
|
|
|
|
break;
|
|
|
|
default: break;
|
|
|
|
}
|
|
|
|
|
|
|
|
} else { // Cannonicalize constant to RHS if commutative
|
|
|
|
if (isCommutativeBinOp(Opcode)) {
|
|
|
|
std::swap(N1CFP, N2CFP);
|
|
|
|
std::swap(N1, N2);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Finally, fold operations that do not require constants.
|
|
|
|
switch (Opcode) {
|
|
|
|
case ISD::AND:
|
|
|
|
case ISD::OR:
|
|
|
|
if (SetCCSDNode *LHS = dyn_cast<SetCCSDNode>(N1.Val))
|
|
|
|
if (SetCCSDNode *RHS = dyn_cast<SetCCSDNode>(N2.Val)) {
|
|
|
|
SDOperand LL = LHS->getOperand(0), RL = RHS->getOperand(0);
|
|
|
|
SDOperand LR = LHS->getOperand(1), RR = RHS->getOperand(1);
|
|
|
|
ISD::CondCode Op2 = RHS->getCondition();
|
|
|
|
|
|
|
|
// (X op1 Y) | (Y op2 X) -> (X op1 Y) | (X swapop2 Y)
|
|
|
|
if (LL == RR && LR == RL) {
|
|
|
|
Op2 = ISD::getSetCCSwappedOperands(Op2);
|
|
|
|
goto MatchedBackwards;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (LL == RL && LR == RR) {
|
|
|
|
MatchedBackwards:
|
|
|
|
ISD::CondCode Result;
|
|
|
|
bool isInteger = MVT::isInteger(LL.getValueType());
|
|
|
|
if (Opcode == ISD::OR)
|
|
|
|
Result = ISD::getSetCCOrOperation(LHS->getCondition(), Op2,
|
|
|
|
isInteger);
|
|
|
|
else
|
|
|
|
Result = ISD::getSetCCAndOperation(LHS->getCondition(), Op2,
|
|
|
|
isInteger);
|
|
|
|
if (Result != ISD::SETCC_INVALID)
|
|
|
|
return getSetCC(Result, LL, LR);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case ISD::XOR:
|
|
|
|
if (N1 == N2) return getConstant(0, VT); // xor X, Y -> 0
|
|
|
|
break;
|
Add a simple transformation. This allows us to compile one of the inner
loops in stepanov to this:
.LBB_Z5test0PdS__2: # no_exit.1
fldl data(,%eax,8)
fldl 24(%esp)
faddp %st(1)
fstl 24(%esp)
incl %eax
cmpl $2000, %eax
fstpl 16(%esp)
#FP_REG_KILL
jl .LBB_Z5test0PdS__2
instead of this:
.LBB_Z5test0PdS__2: # no_exit.1
fldl data(,%eax,8)
fldl 24(%esp)
faddp %st(1)
fstl 24(%esp)
incl %eax
movl $data, %ecx
movl %ecx, %edx
addl $16000, %edx
subl %ecx, %edx
movl %edx, %ecx
sarl $2, %ecx
shrl $29, %ecx
addl %ecx, %edx
sarl $3, %edx
cmpl %edx, %eax
fstpl 16(%esp)
#FP_REG_KILL
jl .LBB_Z5test0PdS__2
The old instruction selector produced:
.LBB_Z5test0PdS__2: # no_exit.1
fldl 24(%esp)
faddl data(,%eax,8)
fstl 24(%esp)
movl %eax, %ecx
incl %ecx
incl %eax
leal data+16000, %edx
movl $data, %edi
subl %edi, %edx
movl %edx, %edi
sarl $2, %edi
shrl $29, %edi
addl %edi, %edx
sarl $3, %edx
cmpl %edx, %ecx
fstpl 16(%esp)
#FP_REG_KILL
jl .LBB_Z5test0PdS__2 # no_exit.1
Which is even worse!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19419 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 20:09:57 +00:00
|
|
|
case ISD::SUB:
|
|
|
|
if (N1.getOpcode() == ISD::ADD) {
|
|
|
|
if (N1.Val->getOperand(0) == N2)
|
|
|
|
return N1.Val->getOperand(1); // (A+B)-A == B
|
|
|
|
if (N1.Val->getOperand(1) == N2)
|
|
|
|
return N1.Val->getOperand(0); // (A+B)-B == A
|
|
|
|
}
|
|
|
|
break;
|
2005-01-07 07:46:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
SDNode *&N = BinaryOps[std::make_pair(Opcode, std::make_pair(N1, N2))];
|
|
|
|
if (N) return SDOperand(N, 0);
|
|
|
|
N = new SDNode(Opcode, N1, N2);
|
|
|
|
N->setValueTypes(VT);
|
|
|
|
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
SDOperand SelectionDAG::getLoad(MVT::ValueType VT,
|
|
|
|
SDOperand Chain, SDOperand Ptr) {
|
|
|
|
SDNode *&N = Loads[std::make_pair(Ptr, std::make_pair(Chain, VT))];
|
|
|
|
if (N) return SDOperand(N, 0);
|
|
|
|
N = new SDNode(ISD::LOAD, Chain, Ptr);
|
|
|
|
|
|
|
|
// Loads have a token chain.
|
|
|
|
N->setValueTypes(VT, MVT::Other);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
|
|
|
|
SDOperand N1, SDOperand N2, SDOperand N3) {
|
|
|
|
// Perform various simplifications.
|
|
|
|
ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N1.Val);
|
|
|
|
ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N2.Val);
|
|
|
|
ConstantSDNode *N3C = dyn_cast<ConstantSDNode>(N3.Val);
|
|
|
|
switch (Opcode) {
|
|
|
|
case ISD::SELECT:
|
|
|
|
if (N1C)
|
|
|
|
if (N1C->getValue())
|
|
|
|
return N2; // select true, X, Y -> X
|
|
|
|
else
|
|
|
|
return N3; // select false, X, Y -> Y
|
|
|
|
|
|
|
|
if (N2 == N3) return N2; // select C, X, X -> X
|
|
|
|
|
|
|
|
if (VT == MVT::i1) { // Boolean SELECT
|
|
|
|
if (N2C) {
|
|
|
|
if (N3C) {
|
|
|
|
if (N2C->getValue()) // select C, 1, 0 -> C
|
|
|
|
return N1;
|
|
|
|
return getNode(ISD::XOR, VT, N1, N3); // select C, 0, 1 -> ~C
|
|
|
|
}
|
|
|
|
|
|
|
|
if (N2C->getValue()) // select C, 1, X -> C | X
|
|
|
|
return getNode(ISD::OR, VT, N1, N3);
|
|
|
|
else // select C, 0, X -> ~C & X
|
|
|
|
return getNode(ISD::AND, VT,
|
|
|
|
getNode(ISD::XOR, N1.getValueType(), N1,
|
|
|
|
getConstant(1, N1.getValueType())), N3);
|
|
|
|
} else if (N3C) {
|
|
|
|
if (N3C->getValue()) // select C, X, 1 -> ~C | X
|
|
|
|
return getNode(ISD::OR, VT,
|
|
|
|
getNode(ISD::XOR, N1.getValueType(), N1,
|
|
|
|
getConstant(1, N1.getValueType())), N2);
|
|
|
|
else // select C, X, 0 -> C & X
|
|
|
|
return getNode(ISD::AND, VT, N1, N2);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
break;
|
2005-01-07 22:49:57 +00:00
|
|
|
case ISD::BRCOND:
|
|
|
|
if (N2C)
|
|
|
|
if (N2C->getValue()) // Unconditional branch
|
|
|
|
return getNode(ISD::BR, MVT::Other, N1, N3);
|
|
|
|
else
|
|
|
|
return N1; // Never-taken branch
|
2005-01-07 23:32:00 +00:00
|
|
|
break;
|
2005-01-07 07:46:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
SDNode *N = new SDNode(Opcode, N1, N2, N3);
|
|
|
|
switch (Opcode) {
|
|
|
|
default:
|
|
|
|
N->setValueTypes(VT);
|
|
|
|
break;
|
|
|
|
case ISD::DYNAMIC_STACKALLOC: // DYNAMIC_STACKALLOC produces pointer and chain
|
|
|
|
N->setValueTypes(VT, MVT::Other);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
// FIXME: memoize NODES
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
|
|
|
|
std::vector<SDOperand> &Children) {
|
|
|
|
switch (Children.size()) {
|
|
|
|
case 0: return getNode(Opcode, VT);
|
|
|
|
case 1: return getNode(Opcode, VT, Children[0]);
|
|
|
|
case 2: return getNode(Opcode, VT, Children[0], Children[1]);
|
|
|
|
case 3: return getNode(Opcode, VT, Children[0], Children[1], Children[2]);
|
|
|
|
default:
|
|
|
|
// FIXME: MEMOIZE!!
|
|
|
|
SDNode *N = new SDNode(Opcode, Children);
|
|
|
|
N->setValueTypes(VT);
|
|
|
|
AllNodes.push_back(N);
|
|
|
|
return SDOperand(N, 0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-01-12 18:37:47 +00:00
|
|
|
/// hasNUsesOfValue - Return true if there are exactly NUSES uses of the
|
|
|
|
/// indicated value. This method ignores uses of other values defined by this
|
|
|
|
/// operation.
|
|
|
|
bool SDNode::hasNUsesOfValue(unsigned NUses, unsigned Value) {
|
|
|
|
assert(Value < getNumValues() && "Bad value!");
|
|
|
|
|
|
|
|
// If there is only one value, this is easy.
|
|
|
|
if (getNumValues() == 1)
|
|
|
|
return use_size() == NUses;
|
|
|
|
if (Uses.size() < NUses) return false;
|
|
|
|
|
|
|
|
SDOperand TheValue(this, Value);
|
|
|
|
|
|
|
|
std::set<SDNode*> UsersHandled;
|
|
|
|
|
|
|
|
for (std::vector<SDNode*>::iterator UI = Uses.begin(), E = Uses.end();
|
|
|
|
UI != E; ++UI) {
|
|
|
|
SDNode *User = *UI;
|
|
|
|
if (User->getNumOperands() == 1 ||
|
|
|
|
UsersHandled.insert(User).second) // First time we've seen this?
|
|
|
|
for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i)
|
|
|
|
if (User->getOperand(i) == TheValue) {
|
|
|
|
if (NUses == 0)
|
|
|
|
return false; // too many uses
|
|
|
|
--NUses;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Found exactly the right number of uses?
|
|
|
|
return NUses == 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2005-01-10 23:25:25 +00:00
|
|
|
const char *SDNode::getOperationName() const {
|
|
|
|
switch (getOpcode()) {
|
|
|
|
default: return "<<Unknown>>";
|
|
|
|
case ISD::EntryToken: return "EntryToken";
|
2005-01-13 17:59:10 +00:00
|
|
|
case ISD::TokenFactor: return "TokenFactor";
|
2005-01-10 23:25:25 +00:00
|
|
|
case ISD::Constant: return "Constant";
|
|
|
|
case ISD::ConstantFP: return "ConstantFP";
|
|
|
|
case ISD::GlobalAddress: return "GlobalAddress";
|
|
|
|
case ISD::FrameIndex: return "FrameIndex";
|
|
|
|
case ISD::BasicBlock: return "BasicBlock";
|
|
|
|
case ISD::ExternalSymbol: return "ExternalSymbol";
|
|
|
|
case ISD::ConstantPool: return "ConstantPoolIndex";
|
|
|
|
case ISD::CopyToReg: return "CopyToReg";
|
|
|
|
case ISD::CopyFromReg: return "CopyFromReg";
|
|
|
|
|
|
|
|
case ISD::ADD: return "add";
|
|
|
|
case ISD::SUB: return "sub";
|
|
|
|
case ISD::MUL: return "mul";
|
|
|
|
case ISD::SDIV: return "sdiv";
|
|
|
|
case ISD::UDIV: return "udiv";
|
|
|
|
case ISD::SREM: return "srem";
|
|
|
|
case ISD::UREM: return "urem";
|
|
|
|
case ISD::AND: return "and";
|
|
|
|
case ISD::OR: return "or";
|
|
|
|
case ISD::XOR: return "xor";
|
|
|
|
case ISD::SHL: return "shl";
|
|
|
|
case ISD::SRA: return "sra";
|
|
|
|
case ISD::SRL: return "srl";
|
|
|
|
|
|
|
|
case ISD::SELECT: return "select";
|
|
|
|
case ISD::ADDC: return "addc";
|
|
|
|
case ISD::SUBB: return "subb";
|
|
|
|
|
|
|
|
// Conversion operators.
|
|
|
|
case ISD::SIGN_EXTEND: return "sign_extend";
|
|
|
|
case ISD::ZERO_EXTEND: return "zero_extend";
|
|
|
|
case ISD::TRUNCATE: return "truncate";
|
|
|
|
case ISD::FP_ROUND: return "fp_round";
|
|
|
|
case ISD::FP_EXTEND: return "fp_extend";
|
|
|
|
|
|
|
|
case ISD::SINT_TO_FP: return "sint_to_fp";
|
|
|
|
case ISD::UINT_TO_FP: return "uint_to_fp";
|
|
|
|
case ISD::FP_TO_SINT: return "fp_to_sint";
|
|
|
|
case ISD::FP_TO_UINT: return "fp_to_uint";
|
|
|
|
|
|
|
|
// Control flow instructions
|
|
|
|
case ISD::BR: return "br";
|
|
|
|
case ISD::BRCOND: return "brcond";
|
|
|
|
case ISD::RET: return "ret";
|
|
|
|
case ISD::CALL: return "call";
|
|
|
|
case ISD::ADJCALLSTACKDOWN: return "adjcallstackdown";
|
|
|
|
case ISD::ADJCALLSTACKUP: return "adjcallstackup";
|
|
|
|
|
|
|
|
// Other operators
|
|
|
|
case ISD::LOAD: return "load";
|
|
|
|
case ISD::STORE: return "store";
|
|
|
|
case ISD::DYNAMIC_STACKALLOC: return "dynamic_stackalloc";
|
|
|
|
case ISD::EXTRACT_ELEMENT: return "extract_element";
|
|
|
|
case ISD::BUILD_PAIR: return "build_pair";
|
2005-01-11 05:57:01 +00:00
|
|
|
case ISD::MEMSET: return "memset";
|
|
|
|
case ISD::MEMCPY: return "memcpy";
|
|
|
|
case ISD::MEMMOVE: return "memmove";
|
2005-01-07 07:46:32 +00:00
|
|
|
|
2005-01-10 23:25:25 +00:00
|
|
|
case ISD::SETCC:
|
|
|
|
const SetCCSDNode *SetCC = cast<SetCCSDNode>(this);
|
|
|
|
switch (SetCC->getCondition()) {
|
|
|
|
default: assert(0 && "Unknown setcc condition!");
|
|
|
|
case ISD::SETOEQ: return "setcc:setoeq";
|
|
|
|
case ISD::SETOGT: return "setcc:setogt";
|
|
|
|
case ISD::SETOGE: return "setcc:setoge";
|
|
|
|
case ISD::SETOLT: return "setcc:setolt";
|
|
|
|
case ISD::SETOLE: return "setcc:setole";
|
|
|
|
case ISD::SETONE: return "setcc:setone";
|
|
|
|
|
|
|
|
case ISD::SETO: return "setcc:seto";
|
|
|
|
case ISD::SETUO: return "setcc:setuo";
|
|
|
|
case ISD::SETUEQ: return "setcc:setue";
|
|
|
|
case ISD::SETUGT: return "setcc:setugt";
|
|
|
|
case ISD::SETUGE: return "setcc:setuge";
|
|
|
|
case ISD::SETULT: return "setcc:setult";
|
|
|
|
case ISD::SETULE: return "setcc:setule";
|
|
|
|
case ISD::SETUNE: return "setcc:setune";
|
|
|
|
|
|
|
|
case ISD::SETEQ: return "setcc:seteq";
|
|
|
|
case ISD::SETGT: return "setcc:setgt";
|
|
|
|
case ISD::SETGE: return "setcc:setge";
|
|
|
|
case ISD::SETLT: return "setcc:setlt";
|
|
|
|
case ISD::SETLE: return "setcc:setle";
|
|
|
|
case ISD::SETNE: return "setcc:setne";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2005-01-07 07:46:32 +00:00
|
|
|
|
|
|
|
void SDNode::dump() const {
|
|
|
|
std::cerr << (void*)this << ": ";
|
|
|
|
|
|
|
|
for (unsigned i = 0, e = getNumValues(); i != e; ++i) {
|
|
|
|
if (i) std::cerr << ",";
|
|
|
|
switch (getValueType(i)) {
|
|
|
|
default: assert(0 && "Unknown value type!");
|
|
|
|
case MVT::i1: std::cerr << "i1"; break;
|
|
|
|
case MVT::i8: std::cerr << "i8"; break;
|
|
|
|
case MVT::i16: std::cerr << "i16"; break;
|
|
|
|
case MVT::i32: std::cerr << "i32"; break;
|
|
|
|
case MVT::i64: std::cerr << "i64"; break;
|
|
|
|
case MVT::f32: std::cerr << "f32"; break;
|
|
|
|
case MVT::f64: std::cerr << "f64"; break;
|
|
|
|
case MVT::Other: std::cerr << "ch"; break;
|
|
|
|
}
|
|
|
|
}
|
2005-01-10 23:25:25 +00:00
|
|
|
std::cerr << " = " << getOperationName();
|
2005-01-07 07:46:32 +00:00
|
|
|
|
|
|
|
std::cerr << " ";
|
|
|
|
for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
|
|
|
|
if (i) std::cerr << ", ";
|
|
|
|
std::cerr << (void*)getOperand(i).Val;
|
|
|
|
if (unsigned RN = getOperand(i).ResNo)
|
|
|
|
std::cerr << ":" << RN;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (const ConstantSDNode *CSDN = dyn_cast<ConstantSDNode>(this)) {
|
|
|
|
std::cerr << "<" << CSDN->getValue() << ">";
|
|
|
|
} else if (const ConstantFPSDNode *CSDN = dyn_cast<ConstantFPSDNode>(this)) {
|
|
|
|
std::cerr << "<" << CSDN->getValue() << ">";
|
|
|
|
} else if (const GlobalAddressSDNode *GADN =
|
|
|
|
dyn_cast<GlobalAddressSDNode>(this)) {
|
|
|
|
std::cerr << "<";
|
|
|
|
WriteAsOperand(std::cerr, GADN->getGlobal()) << ">";
|
|
|
|
} else if (const FrameIndexSDNode *FIDN =
|
|
|
|
dyn_cast<FrameIndexSDNode>(this)) {
|
|
|
|
std::cerr << "<" << FIDN->getIndex() << ">";
|
|
|
|
} else if (const ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(this)){
|
|
|
|
std::cerr << "<" << CP->getIndex() << ">";
|
|
|
|
} else if (const BasicBlockSDNode *BBDN =
|
|
|
|
dyn_cast<BasicBlockSDNode>(this)) {
|
|
|
|
std::cerr << "<";
|
|
|
|
const Value *LBB = (const Value*)BBDN->getBasicBlock()->getBasicBlock();
|
|
|
|
if (LBB)
|
|
|
|
std::cerr << LBB->getName() << " ";
|
|
|
|
std::cerr << (const void*)BBDN->getBasicBlock() << ">";
|
|
|
|
} else if (const CopyRegSDNode *C2V = dyn_cast<CopyRegSDNode>(this)) {
|
|
|
|
std::cerr << "<reg #" << C2V->getReg() << ">";
|
|
|
|
} else if (const ExternalSymbolSDNode *ES =
|
|
|
|
dyn_cast<ExternalSymbolSDNode>(this)) {
|
|
|
|
std::cerr << "'" << ES->getSymbol() << "'";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-01-09 20:38:33 +00:00
|
|
|
static void DumpNodes(SDNode *N, unsigned indent) {
|
|
|
|
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i)
|
|
|
|
if (N->getOperand(i).Val->hasOneUse())
|
|
|
|
DumpNodes(N->getOperand(i).Val, indent+2);
|
|
|
|
else
|
|
|
|
std::cerr << "\n" << std::string(indent+2, ' ')
|
|
|
|
<< (void*)N->getOperand(i).Val << ": <multiple use>";
|
|
|
|
|
|
|
|
|
|
|
|
std::cerr << "\n" << std::string(indent, ' ');
|
|
|
|
N->dump();
|
|
|
|
}
|
|
|
|
|
2005-01-07 07:46:32 +00:00
|
|
|
void SelectionDAG::dump() const {
|
|
|
|
std::cerr << "SelectionDAG has " << AllNodes.size() << " nodes:";
|
2005-01-09 20:26:36 +00:00
|
|
|
std::vector<SDNode*> Nodes(AllNodes);
|
|
|
|
std::sort(Nodes.begin(), Nodes.end());
|
|
|
|
|
|
|
|
for (unsigned i = 0, e = Nodes.size(); i != e; ++i) {
|
2005-01-09 20:38:33 +00:00
|
|
|
if (!Nodes[i]->hasOneUse() && Nodes[i] != getRoot().Val)
|
|
|
|
DumpNodes(Nodes[i], 2);
|
2005-01-07 07:46:32 +00:00
|
|
|
}
|
2005-01-09 20:38:33 +00:00
|
|
|
|
|
|
|
DumpNodes(getRoot().Val, 2);
|
|
|
|
|
2005-01-07 07:46:32 +00:00
|
|
|
std::cerr << "\n\n";
|
|
|
|
}
|
|
|
|
|