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* Added undef patterns.

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* Some reorg.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25163 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-01-09 23:10:28 +00:00
parent 910cd3cfa2
commit 510e478098
2 changed files with 83 additions and 68 deletions
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9
lib/Target/X86/X86ISelDAGToDAG.cpp
View File

@ -550,15 +550,6 @@ SDOperand X86DAGToDAGISel::Select(SDOperand N) {
return CodeGenMap[N] = CurDAG->getTargetNode(Opc, VT, Result);
break;
}
case ISD::UNDEF: {
Opc = (NVT == MVT::f64) ? (X86Vector >= SSE2 ? X86::FLD0SD : X86::FpLD0)
: X86::IMPLICIT_DEF;
if (N.Val->hasOneUse())
return CurDAG->SelectNodeTo(N.Val, Opc, NVT);
else
return CodeGenMap[N] = CurDAG->getTargetNode(Opc, NVT);
}
}
return SelectCode(N);

142
lib/Target/X86/X86InstrInfo.td
View File

@ -368,6 +368,16 @@ def ADJCALLSTACKUP : I<0, Pseudo, (ops i32imm:$amt1, i32imm:$amt2),
[(X86callseq_end imm:$amt1, imm:$amt2)]>;
def IMPLICIT_USE : I<0, Pseudo, (ops variable_ops), "#IMPLICIT_USE", []>;
def IMPLICIT_DEF : I<0, Pseudo, (ops variable_ops), "#IMPLICIT_DEF", []>;
def IMPLICIT_DEF_R8 : I<0, Pseudo, (ops R8:$dst),
"#IMPLICIT_DEF $dst",
[(set R8:$dst, (undef))]>;
def IMPLICIT_DEF_R16 : I<0, Pseudo, (ops R16:$dst),
"#IMPLICIT_DEF $dst",
[(set R16:$dst, (undef))]>;
def IMPLICIT_DEF_R32 : I<0, Pseudo, (ops R32:$dst),
"#IMPLICIT_DEF $dst",
[(set R32:$dst, (undef))]>;
let isTerminator = 1 in
let Defs = [FP0, FP1, FP2, FP3, FP4, FP5, FP6] in
def FP_REG_KILL : I<0, Pseudo, (ops), "#FP_REG_KILL", []>;
@ -438,11 +448,6 @@ let isCall = 1, noResults = 1 in
[(X86call (loadi32 addr:$dst))]>;
}
def : Pat<(X86call tglobaladdr:$dst),
(CALLpcrel32 tglobaladdr:$dst)>;
def : Pat<(X86call externalsym:$dst),
(CALLpcrel32 externalsym:$dst)>;
// Tail call stuff.
let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1, noResults = 1 in
def TAILJMPd : IBr<0xE9, (ops calltarget:$dst), "jmp $dst # TAIL CALL", []>;
@ -1890,25 +1895,6 @@ def IMUL32rm : I<0xAF, MRMSrcMem, (ops R32:$dst, R32:$src1, i32mem:$src2),
} // end Two Address instructions
// X86 specific add which produces a flag.
def : Pat<(X86addflag R32:$src1, R32:$src2),
(ADD32rr R32:$src1, R32:$src2)>;
def : Pat<(X86addflag R32:$src1, (load addr:$src2)),
(ADD32rm R32:$src1, addr:$src2)>;
def : Pat<(X86addflag R32:$src1, imm:$src2),
(ADD32ri R32:$src1, imm:$src2)>;
def : Pat<(X86addflag R32:$src1, i32immSExt8:$src2),
(ADD32ri8 R32:$src1, i32immSExt8:$src2)>;
def : Pat<(X86subflag R32:$src1, R32:$src2),
(SUB32rr R32:$src1, R32:$src2)>;
def : Pat<(X86subflag R32:$src1, (load addr:$src2)),
(SUB32rm R32:$src1, addr:$src2)>;
def : Pat<(X86subflag R32:$src1, imm:$src2),
(SUB32ri R32:$src1, imm:$src2)>;
def : Pat<(X86subflag R32:$src1, i32immSExt8:$src2),
(SUB32ri8 R32:$src1, i32immSExt8:$src2)>;
// Suprisingly enough, these are not two address instructions!
def IMUL16rri : Ii16<0x69, MRMSrcReg, // R16 = R16*I16
(ops R16:$dst, R16:$src1, i16imm:$src2),
@ -2284,20 +2270,6 @@ def MOVZX32rm16: I<0xB7, MRMSrcMem, (ops R32:$dst, i16mem:$src),
"movz{wl|x} {$src, $dst|$dst, $src}",
[(set R32:$dst, (zextloadi32i16 addr:$src))]>, TB;
// Handling 1 bit zextload and sextload
def : Pat<(sextloadi16i1 addr:$src), (MOVSX16rm8 addr:$src)>;
def : Pat<(sextloadi32i1 addr:$src), (MOVSX32rm8 addr:$src)>;
def : Pat<(zextloadi16i1 addr:$src), (MOVZX16rm8 addr:$src)>;
def : Pat<(zextloadi32i1 addr:$src), (MOVZX32rm8 addr:$src)>;
// Handling 1 bit extload
def : Pat<(extloadi8i1 addr:$src), (MOV8rm addr:$src)>;
// Modeling anyext as zext
def : Pat<(i16 (anyext R8 :$src)), (MOVZX16rr8 R8 :$src)>;
def : Pat<(i32 (anyext R8 :$src)), (MOVZX32rr8 R8 :$src)>;
def : Pat<(i32 (anyext R16:$src)), (MOVZX32rr16 R16:$src)>;
//===----------------------------------------------------------------------===//
// XMM Floating point support (requires SSE / SSE2)
//===----------------------------------------------------------------------===//
@ -2555,25 +2527,25 @@ def CMPSDrm : I<0xC2, MRMSrcMem,
// FPI - Floating Point Instruction template.
class FPI<bits<8> o, Format F, dag ops, string asm> : I<o, F, ops, asm, []> {}
// FpI - Floating Point Psuedo Instruction template.
class FpI<dag ops, FPFormat fp, list<dag> pattern>
: X86Inst<0, Pseudo, NoImm, ops, "">, Requires<[FPStack]> {
// FpI_ - Floating Point Psuedo Instruction template. Not Predicated.
class FpI_<dag ops, FPFormat fp, list<dag> pattern>
: X86Inst<0, Pseudo, NoImm, ops, ""> {
let FPForm = fp; let FPFormBits = FPForm.Value;
let Pattern = pattern;
}
// Random Pseudo Instructions.
def FpGETRESULT : FpI<(ops RFP:$dst), SpecialFP, []>; // FPR = ST(0)
// Do not inline into instruction def. since it isn't predicated on FPStack.
def : Pat<(X86fpget), (FpGETRESULT)>;
def FpGETRESULT : FpI_<(ops RFP:$dst), SpecialFP,
[(set RFP:$dst, X86fpget)]>; // FPR = ST(0)
let noResults = 1 in
def FpSETRESULT : FpI<(ops RFP:$src), SpecialFP,
[]>, Imp<[], [ST0]>; // ST(0) = FPR
def FpSETRESULT : FpI_<(ops RFP:$src), SpecialFP,
[(X86fpset RFP:$src)]>, Imp<[], [ST0]>; // ST(0) = FPR
// FpI - Floating Point Psuedo Instruction template. Predicated on FPStack.
class FpI<dag ops, FPFormat fp, list<dag> pattern> :
FpI_<ops, fp, pattern>, Requires<[FPStack]>;
// Do not inline into instruction def. since it isn't predicated on FPStack.
def : Pat<(X86fpset RFP:$src), (FpSETRESULT RFP:$src)>;
def FpMOV : FpI<(ops RFP:$dst, RFP:$src), SpecialFP, []>; // f1 = fmov f2
@ -2754,18 +2726,11 @@ def FpILD32m : FpI<(ops RFP:$dst, i32mem:$src), ZeroArgFP,
def FpILD64m : FpI<(ops RFP:$dst, i64mem:$src), ZeroArgFP,
[]>;
// Required for RET of f32 / f64 values.
def : Pat<(X86fld addr:$src, f32), (FpLD32m addr:$src)>;
def : Pat<(X86fld addr:$src, f64), (FpLD64m addr:$src)>;
def FpST32m : FpI<(ops f32mem:$op, RFP:$src), OneArgFP,
[(truncstore RFP:$src, addr:$op, f32)]>;
def FpST64m : FpI<(ops f64mem:$op, RFP:$src), OneArgFP,
[(store RFP:$src, addr:$op)]>;
def : Pat<(X86fst RFP:$src, addr:$op, f32), (FpST32m addr:$op, RFP:$src)>;
def : Pat<(X86fst RFP:$src, addr:$op, f64), (FpST64m addr:$op, RFP:$src)>;
def FpSTP32m : FpI<(ops f32mem:$op, RFP:$src), OneArgFP, []>;
def FpSTP64m : FpI<(ops f64mem:$op, RFP:$src), OneArgFP, []>;
def FpIST16m : FpI<(ops i16mem:$op, RFP:$src), OneArgFP, []>;
@ -2799,9 +2764,6 @@ def FpLD0 : FpI<(ops RFP:$dst), ZeroArgFP,
def FpLD1 : FpI<(ops RFP:$dst), ZeroArgFP,
[(set RFP:$dst, fp64imm1)]>;
def : Pat<(f64 fp64immneg0), (FpCHS (FpLD0))>, Requires<[FPStack]>;
def : Pat<(f64 fp64immneg1), (FpCHS (FpLD1))>, Requires<[FPStack]>;
def FLD0 : FPI<0xEE, RawFrm, (ops), "fldz">, D9;
def FLD1 : FPI<0xE8, RawFrm, (ops), "fld1">, D9;
@ -2848,6 +2810,68 @@ def FLDCW16m : I<0xD9, MRM5m, // X87 control world = [mem16]
def RDTSC : I<0x31, RawFrm, (ops), "rdtsc", [(X86rdtsc)]>,
TB, Imp<[],[EAX,EDX]>;
//===----------------------------------------------------------------------===//
// Non-Instruction Patterns
//===----------------------------------------------------------------------===//
// Calls
def : Pat<(X86call tglobaladdr:$dst),
(CALLpcrel32 tglobaladdr:$dst)>;
def : Pat<(X86call externalsym:$dst),
(CALLpcrel32 externalsym:$dst)>;
// X86 specific add which produces a flag.
def : Pat<(X86addflag R32:$src1, R32:$src2),
(ADD32rr R32:$src1, R32:$src2)>;
def : Pat<(X86addflag R32:$src1, (load addr:$src2)),
(ADD32rm R32:$src1, addr:$src2)>;
def : Pat<(X86addflag R32:$src1, imm:$src2),
(ADD32ri R32:$src1, imm:$src2)>;
def : Pat<(X86addflag R32:$src1, i32immSExt8:$src2),
(ADD32ri8 R32:$src1, i32immSExt8:$src2)>;
def : Pat<(X86subflag R32:$src1, R32:$src2),
(SUB32rr R32:$src1, R32:$src2)>;
def : Pat<(X86subflag R32:$src1, (load addr:$src2)),
(SUB32rm R32:$src1, addr:$src2)>;
def : Pat<(X86subflag R32:$src1, imm:$src2),
(SUB32ri R32:$src1, imm:$src2)>;
def : Pat<(X86subflag R32:$src1, i32immSExt8:$src2),
(SUB32ri8 R32:$src1, i32immSExt8:$src2)>;
// {s|z}extload bool -> {s|z}extload byte
def : Pat<(sextloadi16i1 addr:$src), (MOVSX16rm8 addr:$src)>;
def : Pat<(sextloadi32i1 addr:$src), (MOVSX32rm8 addr:$src)>;
def : Pat<(zextloadi16i1 addr:$src), (MOVZX16rm8 addr:$src)>;
def : Pat<(zextloadi32i1 addr:$src), (MOVZX32rm8 addr:$src)>;
// extload bool -> extload byte
def : Pat<(extloadi8i1 addr:$src), (MOV8rm addr:$src)>;
// anyext -> zext
def : Pat<(i16 (anyext R8 :$src)), (MOVZX16rr8 R8 :$src)>;
def : Pat<(i32 (anyext R8 :$src)), (MOVZX32rr8 R8 :$src)>;
def : Pat<(i32 (anyext R16:$src)), (MOVZX32rr16 R16:$src)>;
// Required for RET of f32 / f64 values.
def : Pat<(X86fld addr:$src, f32), (FpLD32m addr:$src)>;
def : Pat<(X86fld addr:$src, f64), (FpLD64m addr:$src)>;
// Required for CALL which return f32 / f64 values.
def : Pat<(X86fst RFP:$src, addr:$op, f32), (FpST32m addr:$op, RFP:$src)>;
def : Pat<(X86fst RFP:$src, addr:$op, f64), (FpST64m addr:$op, RFP:$src)>;
// Floatin point constant -0.0 and -1.0
def : Pat<(f64 fp64immneg0), (FpCHS (FpLD0))>, Requires<[FPStack]>;
def : Pat<(f64 fp64immneg1), (FpCHS (FpLD1))>, Requires<[FPStack]>;
// FR64 undef
def : Pat<(f64 (undef)), (FLD0SD)>, Requires<[HasSSE2]>;
// RFP undef
def : Pat<(f64 (undef)), (FpLD0)>, Requires<[FPStack]>;
//===----------------------------------------------------------------------===//
// Some peepholes
//===----------------------------------------------------------------------===//