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Get closer to fully working scalar FP in SSE regs. This gets singlesource 

working, and Olden/power.

llvm-svn: 22441
This commit is contained in:
Nate Begeman 2005-07-15 00:38:55 +00:00
parent 0f38dc4970
commit a0b5e035ea
3 changed files with 53 additions and 52 deletions
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2
llvm/lib/Target/X86/X86.td
View File

@ -61,7 +61,7 @@ def IntelAsmWriter : AsmWriter {
def X86 : Target {
// Specify the callee saved registers.
let CalleeSavedRegisters = [ESI, EDI, EBX, EBP, XMM4, XMM5, XMM6, XMM7];
let CalleeSavedRegisters = [ESI, EDI, EBX, EBP];
// Yes, pointers are 32-bits in size.
let PointerType = i32;

58
llvm/lib/Target/X86/X86ISelPattern.cpp
View File

@ -1687,9 +1687,9 @@ void ISel::EmitSelectCC(SDOperand Cond, MVT::ValueType SVT,
/*missing*/0, /*missing*/0, X86::FCMOVB , X86::FCMOVBE,
X86::FCMOVA , X86::FCMOVAE, X86::FCMOVP , X86::FCMOVNP
};
static const unsigned SSE_CMOVTAB[] = {
static const int SSE_CMOVTAB[] = {
0 /* CMPEQSS */, 4 /* CMPNEQSS */, 1 /* CMPLTSS */, 2 /* CMPLESS */,
2 /* CMPLESS */, 1 /* CMPLTSS */, /*missing*/0, /*missing*/0,
1 /* CMPLTSS */, 2 /* CMPLESS */, /*missing*/0, /*missing*/0,
/*missing*/0, /*missing*/0, /*missing*/0, /*missing*/0
};
@ -1761,33 +1761,12 @@ void ISel::EmitSelectCC(SDOperand Cond, MVT::ValueType SVT,
// There's no SSE equivalent of FCMOVE. In some cases we can fake it up, in
// Others we will have to do the PowerPC thing and generate an MBB for the
// true and false values and select between them with a PHI.
if (X86ScalarSSE) {
if (CondCode != NOT_SET) {
unsigned CMPSOpc = (SVT == MVT::f64) ? X86::CMPSDrr : X86::CMPSSrr;
unsigned CMPSImm = SSE_CMOVTAB[CondCode];
// FIXME check for min
// FIXME check for max
// FIXME check for reverse
unsigned LHS = SelectExpr(Cond.getOperand(0));
unsigned RHS = SelectExpr(Cond.getOperand(1));
// emit compare mask
unsigned MaskReg = MakeReg(SVT);
BuildMI(BB, CMPSOpc, 3, MaskReg).addReg(LHS).addReg(RHS).addImm(CMPSImm);
// emit and with mask
unsigned TrueMask = MakeReg(SVT);
unsigned AndOpc = (SVT == MVT::f32) ? X86::ANDPSrr : X86::ANDPDrr;
BuildMI(BB, AndOpc, 2, TrueMask).addReg(RTrue).addReg(MaskReg);
// emit and with inverse mask
unsigned FalseMask = MakeReg(SVT);
unsigned AndnOpc = (SVT == MVT::f32) ? X86::ANDNPSrr : X86::ANDNPDrr;
BuildMI(BB, AndnOpc, 2, FalseMask).addReg(RFalse).addReg(MaskReg);
// emit or into dest reg
unsigned OROpc = (SVT == MVT::f32) ? X86::ORPSrr : X86::ORPDrr;
BuildMI(BB, OROpc, 2, RDest).addReg(TrueMask).addReg(FalseMask);
return;
if (X86ScalarSSE && (SVT == MVT::f32 || SVT == MVT::f64)) {
if (0 && CondCode != NOT_SET) {
// FIXME: check for min and max
} else {
// do the test and branch thing
// Get the condition into the zero flag.
// FIXME: emit a direct compare and branch rather than setting a cond reg
// and testing it.
unsigned CondReg = SelectExpr(Cond);
BuildMI(BB, X86::TEST8rr, 2).addReg(CondReg).addReg(CondReg);
@ -2184,6 +2163,11 @@ unsigned ISel::SelectExpr(SDOperand N) {
Tmp1 = SelectExpr(N.getOperand(0));
BuildMI(BB, X86::CVTSS2SDrr, 1, Result).addReg(Tmp1);
return Result;
case ISD::FP_ROUND:
assert(X86ScalarSSE && "Scalar SSE FP must be enabled to use f32");
Tmp1 = SelectExpr(N.getOperand(0));
BuildMI(BB, X86::CVTSD2SSrr, 1, Result).addReg(Tmp1);
return Result;
case ISD::CopyFromReg:
Select(N.getOperand(0));
if (Result == 1) {
@ -2482,9 +2466,9 @@ unsigned ISel::SelectExpr(SDOperand N) {
// CVTSD2SI instructions.
if (ISD::FP_TO_SINT == N.getOpcode() && X86ScalarSSE) {
if (MVT::f32 == N.getOperand(0).getValueType()) {
BuildMI(BB, X86::CVTSS2SIrr, 1, Result).addReg(Tmp1);
BuildMI(BB, X86::CVTTSS2SIrr, 1, Result).addReg(Tmp1);
} else if (MVT::f64 == N.getOperand(0).getValueType()) {
BuildMI(BB, X86::CVTSD2SIrr, 1, Result).addReg(Tmp1);
BuildMI(BB, X86::CVTTSD2SIrr, 1, Result).addReg(Tmp1);
} else {
assert(0 && "Not an f32 or f64?");
abort();
@ -4485,8 +4469,18 @@ void ISel::Select(SDOperand N) {
SelectAddress(N.getOperand(2), AM);
Select(N.getOperand(0));
}
addFullAddress(BuildMI(BB, X86::MOV32mi, 4+1),
AM).addGlobalAddress(GA->getGlobal());
GlobalValue *GV = GA->getGlobal();
// For Darwin, external and weak symbols are indirect, so we want to load
// the value at address GV, not the value of GV itself.
if (Subtarget->getIndirectExternAndWeakGlobals() &&
(GV->hasWeakLinkage() || GV->isExternal())) {
Tmp1 = MakeReg(MVT::i32);
BuildMI(BB, X86::MOV32rm, 4, Tmp1).addReg(0).addZImm(1).addReg(0)
.addGlobalAddress(GV, false, 0);
addFullAddress(BuildMI(BB, X86::MOV32mr, 4+1),AM).addReg(Tmp1);
} else {
addFullAddress(BuildMI(BB, X86::MOV32mi, 4+1),AM).addGlobalAddress(GV);
}
return;
}

45
llvm/lib/Target/X86/X86InstrInfo.td
View File

@ -20,6 +20,9 @@ class X86MemOperand<ValueType Ty> : Operand<Ty> {
let NumMIOperands = 4;
let PrintMethod = "printMemoryOperand";
}
def SSECC : Operand<i8> {
let PrintMethod = "printSSECC";
}
def i8mem : X86MemOperand<i8>;
def i16mem : X86MemOperand<i16>;
@ -188,7 +191,7 @@ def JG : IBr<0x8F, (ops i32imm:$dst), "jg $dst">, TB;
let isCall = 1 in
// All calls clobber the non-callee saved registers...
let Defs = [EAX, ECX, EDX, FP0, FP1, FP2, FP3, FP4, FP5, FP6, ST0,
XMM0, XMM1, XMM2, XMM3] in {
XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7] in {
def CALLpcrel32 : I<0xE8, RawFrm, (ops calltarget:$dst), "call $dst">;
def CALL32r : I<0xFF, MRM2r, (ops R32:$dst), "call {*}$dst">;
def CALL32m : I<0xFF, MRM2m, (ops i32mem:$dst), "call {*}$dst">;
@ -1425,17 +1428,21 @@ def MOVAPDrm: I<0x28, MRMSrcMem, (ops RXMM:$dst, f64mem:$src),
def MOVAPDmr: I<0x29, MRMDestMem, (ops f64mem:$dst, RXMM:$src),
"movapd {$src, $dst|$dst, $src}">, TB, OpSize;
def CVTSD2SIrr: I<0x2D, MRMSrcReg, (ops R32:$dst, RXMM:$src),
"cvtsd2si {$src, $dst|$dst, $src}">, XD;
def CVTSD2SIrm: I<0x2D, MRMSrcMem, (ops R32:$dst, f64mem:$src),
"cvtsd2si {$src, $dst|$dst, $src}">, XD;
def CVTSS2SIrr: I<0x2D, MRMSrcReg, (ops R32:$dst, RXMM:$src),
"cvtss2si {$src, $dst|$dst, $src}">, XS;
def CVTSS2SIrm: I<0x2D, MRMSrcMem, (ops R32:$dst, f32mem:$src),
"cvtss2si {$src, $dst|$dst, $src}">, XS;
def CVTSS2SDrr: I<0x5A, MRMSrcReg, (ops R32:$dst, RXMM:$src),
def CVTTSD2SIrr: I<0x2C, MRMSrcReg, (ops R32:$dst, RXMM:$src),
"cvttsd2si {$src, $dst|$dst, $src}">, XD;
def CVTTSD2SIrm: I<0x2C, MRMSrcMem, (ops R32:$dst, f64mem:$src),
"cvttsd2si {$src, $dst|$dst, $src}">, XD;
def CVTTSS2SIrr: I<0x2C, MRMSrcReg, (ops R32:$dst, RXMM:$src),
"cvttss2si {$src, $dst|$dst, $src}">, XS;
def CVTTSS2SIrm: I<0x2C, MRMSrcMem, (ops R32:$dst, f32mem:$src),
"cvttss2si {$src, $dst|$dst, $src}">, XS;
def CVTSD2SSrr: I<0x5A, MRMSrcReg, (ops RXMM:$dst, RXMM:$src),
"cvtsd2ss {$src, $dst|$dst, $src}">, XS;
def CVTSD2SSrm: I<0x5A, MRMSrcMem, (ops RXMM:$dst, f64mem:$src),
"cvtsd2ss {$src, $dst|$dst, $src}">, XS;
def CVTSS2SDrr: I<0x5A, MRMSrcReg, (ops RXMM:$dst, RXMM:$src),
"cvtss2sd {$src, $dst|$dst, $src}">, XD;
def CVTSS2SDrm: I<0x5A, MRMSrcMem, (ops R32:$dst, f32mem:$src),
def CVTSS2SDrm: I<0x5A, MRMSrcMem, (ops RXMM:$dst, f32mem:$src),
"cvtss2sd {$src, $dst|$dst, $src}">, XD;
def CVTSI2SSrr: I<0x2A, MRMSrcReg, (ops R32:$dst, RXMM:$src),
"cvtsi2ss {$src, $dst|$dst, $src}">, XS;
@ -1515,17 +1522,17 @@ def SUBSDrr : I<0x5C, MRMSrcReg, (ops RXMM:$dst, RXMM:$src1, RXMM:$src),
"subsd {$src, $dst|$dst, $src}">, XD;
def CMPSSrr : I<0xC2, MRMSrcReg,
(ops RXMM:$dst, RXMM:$src1, RXMM:$src, i8imm:$pred),
"cmpss {$src, $dst, $pred|$dst, $src, $pred}">, XS;
(ops RXMM:$dst, RXMM:$src1, RXMM:$src, SSECC:$cc),
"cmp${cc}ss {$src, $dst|$dst, $src}">, XS;
def CMPSSrm : I<0xC2, MRMSrcMem,
(ops RXMM:$dst, RXMM:$src1, f32mem:$src, i8imm:$pred),
"cmpss {$src, $dst, $pred|$dst, $src, $pred}">, XS;
(ops RXMM:$dst, RXMM:$src1, f32mem:$src, SSECC:$cc),
"cmp${cc}ss {$src, $dst|$dst, $src}">, XS;
def CMPSDrr : I<0xC2, MRMSrcReg,
(ops RXMM:$dst, RXMM:$src1, RXMM:$src, i8imm:$pred),
"cmpss {$src, $dst, $pred|$dst, $src, $pred}">, XD;
(ops RXMM:$dst, RXMM:$src1, RXMM:$src, SSECC:$cc),
"cmp${cc}sd {$src, $dst|$dst, $src}">, XD;
def CMPSDrm : I<0xC2, MRMSrcMem,
(ops RXMM:$dst, RXMM:$src1, f64mem:$src, i8imm:$pred),
"cmpss {$src, $dst, $pred|$dst, $src, $pred}">, XD;
(ops RXMM:$dst, RXMM:$src1, f64mem:$src, SSECC:$cc),
"cmp${cc}sd {$src, $dst|$dst, $src}">, XD;
}
//===----------------------------------------------------------------------===//