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Diffstat (limited to 'lib/Target/X86/X86ISelLowering.cpp')
-rw-r--r--lib/Target/X86/X86ISelLowering.cpp215
1 files changed, 192 insertions, 23 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 5343361..ab704a7 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -31,6 +31,7 @@
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/CodeGen/SSARegMap.h"
+#include "llvm/Support/CommandLine.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetOptions.h"
@@ -3337,41 +3338,58 @@ SDOperand X86TargetLowering::LowerShift(SDOperand Op, SelectionDAG &DAG) {
SDOperand AndNode = DAG.getNode(ISD::AND, MVT::i8, ShAmt,
DAG.getConstant(32, MVT::i8));
SDOperand COps[]={DAG.getEntryNode(), AndNode, DAG.getConstant(0, MVT::i8)};
- SDOperand InFlag = DAG.getNode(X86ISD::CMP, VTs, 2, COps, 3).getValue(1);
+ SDOperand Cond = NewCCModeling
+ ? DAG.getNode(X86ISD::CMP_NEW, MVT::i32,
+ AndNode, DAG.getConstant(0, MVT::i8))
+ : DAG.getNode(X86ISD::CMP, VTs, 2, COps, 3).getValue(1);
SDOperand Hi, Lo;
SDOperand CC = DAG.getConstant(X86::COND_NE, MVT::i8);
-
+ unsigned Opc = NewCCModeling ? X86ISD::CMOV_NEW : X86ISD::CMOV;
VTs = DAG.getNodeValueTypes(MVT::i32, MVT::Flag);
SmallVector<SDOperand, 4> Ops;
if (Op.getOpcode() == ISD::SHL_PARTS) {
Ops.push_back(Tmp2);
Ops.push_back(Tmp3);
Ops.push_back(CC);
- Ops.push_back(InFlag);
- Hi = DAG.getNode(X86ISD::CMOV, VTs, 2, &Ops[0], Ops.size());
- InFlag = Hi.getValue(1);
+ Ops.push_back(Cond);
+ if (NewCCModeling)
+ Hi = DAG.getNode(Opc, MVT::i32, &Ops[0], Ops.size());
+ else {
+ Hi = DAG.getNode(Opc, VTs, 2, &Ops[0], Ops.size());
+ Cond = Hi.getValue(1);
+ }
Ops.clear();
Ops.push_back(Tmp3);
Ops.push_back(Tmp1);
Ops.push_back(CC);
- Ops.push_back(InFlag);
- Lo = DAG.getNode(X86ISD::CMOV, VTs, 2, &Ops[0], Ops.size());
+ Ops.push_back(Cond);
+ if (NewCCModeling)
+ Lo = DAG.getNode(Opc, MVT::i32, &Ops[0], Ops.size());
+ else
+ Lo = DAG.getNode(Opc, VTs, 2, &Ops[0], Ops.size());
} else {
Ops.push_back(Tmp2);
Ops.push_back(Tmp3);
Ops.push_back(CC);
- Ops.push_back(InFlag);
- Lo = DAG.getNode(X86ISD::CMOV, VTs, 2, &Ops[0], Ops.size());
- InFlag = Lo.getValue(1);
+ Ops.push_back(Cond);
+ if (NewCCModeling)
+ Lo = DAG.getNode(Opc, MVT::i32, &Ops[0], Ops.size());
+ else {
+ Lo = DAG.getNode(Opc, VTs, 2, &Ops[0], Ops.size());
+ Cond = Lo.getValue(1);
+ }
Ops.clear();
Ops.push_back(Tmp3);
Ops.push_back(Tmp1);
Ops.push_back(CC);
- Ops.push_back(InFlag);
- Hi = DAG.getNode(X86ISD::CMOV, VTs, 2, &Ops[0], Ops.size());
+ Ops.push_back(Cond);
+ if (NewCCModeling)
+ Hi = DAG.getNode(Opc, MVT::i32, &Ops[0], Ops.size());
+ else
+ Hi = DAG.getNode(Opc, VTs, 2, &Ops[0], Ops.size());
}
VTs = DAG.getNodeValueTypes(MVT::i32, MVT::i32);
@@ -3668,6 +3686,43 @@ SDOperand X86TargetLowering::LowerSETCC(SDOperand Op, SelectionDAG &DAG,
}
}
+SDOperand X86TargetLowering::LowerSETCC_New(SDOperand Op, SelectionDAG &DAG) {
+ assert(Op.getValueType() == MVT::i8 && "SetCC type must be 8-bit integer");
+ SDOperand Op0 = Op.getOperand(0);
+ SDOperand Op1 = Op.getOperand(1);
+ SDOperand CC = Op.getOperand(2);
+ ISD::CondCode SetCCOpcode = cast<CondCodeSDNode>(CC)->get();
+ bool isFP = MVT::isFloatingPoint(Op.getOperand(1).getValueType());
+ unsigned X86CC;
+
+ SDOperand Cond = DAG.getNode(X86ISD::CMP_NEW, MVT::i32, Op0, Op1);
+ if (translateX86CC(cast<CondCodeSDNode>(CC)->get(), isFP, X86CC,
+ Op0, Op1, DAG))
+ return DAG.getNode(X86ISD::SETCC_NEW, MVT::i8,
+ DAG.getConstant(X86CC, MVT::i8), Cond);
+
+ assert(isFP && "Illegal integer SetCC!");
+
+ switch (SetCCOpcode) {
+ default: assert(false && "Illegal floating point SetCC!");
+ case ISD::SETOEQ: { // !PF & ZF
+ SDOperand Tmp1 = DAG.getNode(X86ISD::SETCC_NEW, MVT::i8,
+ DAG.getConstant(X86::COND_NP, MVT::i8), Cond);
+ SDOperand Tmp2 = DAG.getNode(X86ISD::SETCC_NEW, MVT::i8,
+ DAG.getConstant(X86::COND_E, MVT::i8), Cond);
+ return DAG.getNode(ISD::AND, MVT::i8, Tmp1, Tmp2);
+ }
+ case ISD::SETUNE: { // PF | !ZF
+ SDOperand Tmp1 = DAG.getNode(X86ISD::SETCC_NEW, MVT::i8,
+ DAG.getConstant(X86::COND_P, MVT::i8), Cond);
+ SDOperand Tmp2 = DAG.getNode(X86ISD::SETCC_NEW, MVT::i8,
+ DAG.getConstant(X86::COND_NE, MVT::i8), Cond);
+ return DAG.getNode(ISD::OR, MVT::i8, Tmp1, Tmp2);
+ }
+ }
+}
+
+
SDOperand X86TargetLowering::LowerSELECT(SDOperand Op, SelectionDAG &DAG) {
bool addTest = true;
SDOperand Chain = DAG.getEntryNode();
@@ -3718,6 +3773,56 @@ SDOperand X86TargetLowering::LowerSELECT(SDOperand Op, SelectionDAG &DAG) {
return DAG.getNode(X86ISD::CMOV, VTs, 2, &Ops[0], Ops.size());
}
+SDOperand X86TargetLowering::LowerSELECT_New(SDOperand Op, SelectionDAG &DAG) {
+ bool addTest = true;
+ SDOperand Cond = Op.getOperand(0);
+ SDOperand CC;
+
+ if (Cond.getOpcode() == ISD::SETCC)
+ Cond = LowerSETCC_New(Cond, DAG);
+
+ if (Cond.getOpcode() == X86ISD::SETCC_NEW) {
+ CC = Cond.getOperand(0);
+
+ // If condition flag is set by a X86ISD::CMP, then make a copy of it
+ // (since flag operand cannot be shared). Use it as the condition setting
+ // operand in place of the X86ISD::SETCC.
+ // If the X86ISD::SETCC has more than one use, then perhaps it's better
+ // to use a test instead of duplicating the X86ISD::CMP (for register
+ // pressure reason)?
+ SDOperand Cmp = Cond.getOperand(1);
+ unsigned Opc = Cmp.getOpcode();
+ bool IllegalFPCMov =
+ ! ((X86ScalarSSEf32 && Op.getValueType()==MVT::f32) ||
+ (X86ScalarSSEf64 && Op.getValueType()==MVT::f64)) &&
+ !hasFPCMov(cast<ConstantSDNode>(CC)->getSignExtended());
+ if ((Opc == X86ISD::CMP_NEW ||
+ Opc == X86ISD::COMI_NEW ||
+ Opc == X86ISD::UCOMI_NEW) &&
+ !IllegalFPCMov) {
+ Cond = DAG.getNode(Opc, MVT::i32, Cmp.getOperand(0), Cmp.getOperand(1));
+ addTest = false;
+ }
+ }
+
+ if (addTest) {
+ CC = DAG.getConstant(X86::COND_NE, MVT::i8);
+ Cond = DAG.getNode(X86ISD::CMP_NEW, MVT::i32, Cond,
+ DAG.getConstant(0, MVT::i8));
+ }
+
+ const MVT::ValueType *VTs = DAG.getNodeValueTypes(Op.getValueType(),
+ MVT::Flag);
+ SmallVector<SDOperand, 4> Ops;
+ // X86ISD::CMOV means set the result (which is operand 1) to the RHS if
+ // condition is true.
+ Ops.push_back(Op.getOperand(2));
+ Ops.push_back(Op.getOperand(1));
+ Ops.push_back(CC);
+ Ops.push_back(Cond);
+ return DAG.getNode(X86ISD::CMOV_NEW, VTs, 2, &Ops[0], Ops.size());
+}
+
SDOperand X86TargetLowering::LowerBRCOND(SDOperand Op, SelectionDAG &DAG) {
bool addTest = true;
SDOperand Chain = Op.getOperand(0);
@@ -3756,6 +3861,43 @@ SDOperand X86TargetLowering::LowerBRCOND(SDOperand Op, SelectionDAG &DAG) {
Cond, Op.getOperand(2), CC, Cond.getValue(1));
}
+SDOperand X86TargetLowering::LowerBRCOND_New(SDOperand Op, SelectionDAG &DAG) {
+ bool addTest = true;
+ SDOperand Chain = Op.getOperand(0);
+ SDOperand Cond = Op.getOperand(1);
+ SDOperand Dest = Op.getOperand(2);
+ SDOperand CC;
+
+ if (Cond.getOpcode() == ISD::SETCC)
+ Cond = LowerSETCC_New(Cond, DAG);
+
+ if (Cond.getOpcode() == X86ISD::SETCC_NEW) {
+ CC = Cond.getOperand(0);
+
+ // If condition flag is set by a X86ISD::CMP, then make a copy of it
+ // (since flag operand cannot be shared). Use it as the condition setting
+ // operand in place of the X86ISD::SETCC.
+ // If the X86ISD::SETCC has more than one use, then perhaps it's better
+ // to use a test instead of duplicating the X86ISD::CMP (for register
+ // pressure reason)?
+ SDOperand Cmp = Cond.getOperand(1);
+ unsigned Opc = Cmp.getOpcode();
+ if (Opc == X86ISD::CMP_NEW ||
+ Opc == X86ISD::COMI_NEW ||
+ Opc == X86ISD::UCOMI_NEW) {
+ Cond = DAG.getNode(Opc, MVT::i32, Cmp.getOperand(0), Cmp.getOperand(1));
+ addTest = false;
+ }
+ }
+
+ if (addTest) {
+ CC = DAG.getConstant(X86::COND_NE, MVT::i8);
+ Cond= DAG.getNode(X86ISD::CMP_NEW, MVT::i32, Cond, DAG.getConstant(0, MVT::i8));
+ }
+ return DAG.getNode(X86ISD::BRCOND_NEW, Op.getValueType(),
+ Chain, Op.getOperand(2), CC, Cond);
+}
+
SDOperand X86TargetLowering::LowerCALL(SDOperand Op, SelectionDAG &DAG) {
unsigned CallingConv= cast<ConstantSDNode>(Op.getOperand(1))->getValue();
@@ -4355,13 +4497,21 @@ X86TargetLowering::LowerINTRINSIC_WO_CHAIN(SDOperand Op, SelectionDAG &DAG) {
SDOperand RHS = Op.getOperand(2);
translateX86CC(CC, true, X86CC, LHS, RHS, DAG);
- const MVT::ValueType *VTs = DAG.getNodeValueTypes(MVT::Other, MVT::Flag);
- SDOperand Ops1[] = { DAG.getEntryNode(), LHS, RHS };
- SDOperand Cond = DAG.getNode(Opc, VTs, 2, Ops1, 3);
- VTs = DAG.getNodeValueTypes(MVT::i8, MVT::Flag);
- SDOperand Ops2[] = { DAG.getConstant(X86CC, MVT::i8), Cond };
- SDOperand SetCC = DAG.getNode(X86ISD::SETCC, VTs, 2, Ops2, 2);
- return DAG.getNode(ISD::ANY_EXTEND, MVT::i32, SetCC);
+ if (NewCCModeling) {
+ Opc = (Opc == X86ISD::UCOMI) ? X86ISD::UCOMI_NEW : X86ISD::COMI_NEW;
+ SDOperand Cond = DAG.getNode(Opc, MVT::i32, LHS, RHS);
+ SDOperand SetCC = DAG.getNode(X86ISD::SETCC_NEW, MVT::i8,
+ DAG.getConstant(X86CC, MVT::i8), Cond);
+ return DAG.getNode(ISD::ANY_EXTEND, MVT::i32, SetCC);
+ } else {
+ const MVT::ValueType *VTs = DAG.getNodeValueTypes(MVT::Other, MVT::Flag);
+ SDOperand Ops1[] = { DAG.getEntryNode(), LHS, RHS };
+ SDOperand Cond = DAG.getNode(Opc, VTs, 2, Ops1, 3);
+ VTs = DAG.getNodeValueTypes(MVT::i8, MVT::Flag);
+ SDOperand Ops2[] = { DAG.getConstant(X86CC, MVT::i8), Cond };
+ SDOperand SetCC = DAG.getNode(X86ISD::SETCC, VTs, 2, Ops2, 2);
+ return DAG.getNode(ISD::ANY_EXTEND, MVT::i32, SetCC);
+ }
}
}
}
@@ -4529,9 +4679,15 @@ SDOperand X86TargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
case ISD::FABS: return LowerFABS(Op, DAG);
case ISD::FNEG: return LowerFNEG(Op, DAG);
case ISD::FCOPYSIGN: return LowerFCOPYSIGN(Op, DAG);
- case ISD::SETCC: return LowerSETCC(Op, DAG, DAG.getEntryNode());
- case ISD::SELECT: return LowerSELECT(Op, DAG);
- case ISD::BRCOND: return LowerBRCOND(Op, DAG);
+ case ISD::SETCC: return NewCCModeling
+ ? LowerSETCC_New(Op, DAG)
+ : LowerSETCC(Op, DAG, DAG.getEntryNode());
+ case ISD::SELECT: return NewCCModeling
+ ? LowerSELECT_New(Op, DAG)
+ : LowerSELECT(Op, DAG);
+ case ISD::BRCOND: return NewCCModeling
+ ? LowerBRCOND_New(Op, DAG)
+ : LowerBRCOND(Op, DAG);
case ISD::JumpTable: return LowerJumpTable(Op, DAG);
case ISD::CALL: return LowerCALL(Op, DAG);
case ISD::RET: return LowerRET(Op, DAG);
@@ -4575,11 +4731,17 @@ const char *X86TargetLowering::getTargetNodeName(unsigned Opcode) const {
case X86ISD::TAILCALL: return "X86ISD::TAILCALL";
case X86ISD::RDTSC_DAG: return "X86ISD::RDTSC_DAG";
case X86ISD::CMP: return "X86ISD::CMP";
+ case X86ISD::CMP_NEW: return "X86ISD::CMP_NEW";
case X86ISD::COMI: return "X86ISD::COMI";
+ case X86ISD::COMI_NEW: return "X86ISD::COMI_NEW";
case X86ISD::UCOMI: return "X86ISD::UCOMI";
+ case X86ISD::UCOMI_NEW: return "X86ISD::UCOMI_NEW";
case X86ISD::SETCC: return "X86ISD::SETCC";
+ case X86ISD::SETCC_NEW: return "X86ISD::SETCC_NEW";
case X86ISD::CMOV: return "X86ISD::CMOV";
+ case X86ISD::CMOV_NEW: return "X86ISD::CMOV_NEW";
case X86ISD::BRCOND: return "X86ISD::BRCOND";
+ case X86ISD::BRCOND_NEW: return "X86ISD::BRCOND_NEW";
case X86ISD::RET_FLAG: return "X86ISD::RET_FLAG";
case X86ISD::REP_STOS: return "X86ISD::REP_STOS";
case X86ISD::REP_MOVS: return "X86ISD::REP_MOVS";
@@ -4696,7 +4858,13 @@ X86TargetLowering::InsertAtEndOfBasicBlock(MachineInstr *MI,
case X86::CMOV_FR64:
case X86::CMOV_V4F32:
case X86::CMOV_V2F64:
- case X86::CMOV_V2I64: {
+ case X86::CMOV_V2I64:
+
+ case X86::NEW_CMOV_FR32:
+ case X86::NEW_CMOV_FR64:
+ case X86::NEW_CMOV_V4F32:
+ case X86::NEW_CMOV_V2F64:
+ case X86::NEW_CMOV_V2I64: {
// To "insert" a SELECT_CC instruction, we actually have to insert the
// diamond control-flow pattern. The incoming instruction knows the
// destination vreg to set, the condition code register to branch on, the
@@ -4853,6 +5021,7 @@ void X86TargetLowering::computeMaskedBitsForTargetNode(const SDOperand Op,
switch (Opc) {
default: break;
case X86ISD::SETCC:
+ case X86ISD::SETCC_NEW:
KnownZero |= (MVT::getIntVTBitMask(Op.getValueType()) ^ 1ULL);
break;
}
generated by cgit v1.1 at 2025-07-03 12:12:16 +0000