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fix typos, grammar, formatting; NFC 

llvm-svn: 223276
This commit is contained in:
Sanjay Patel 2014-12-03 22:28:05 +00:00
parent b23713aae9
commit 23b7ce2725
1 changed files with 19 additions and 22 deletions
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41
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -107,7 +107,7 @@ static SDValue ExtractSubVector(SDValue Vec, unsigned IdxVal,
// If the input is a buildvector just emit a smaller one.
if (Vec.getOpcode() == ISD::BUILD_VECTOR)
return DAG.getNode(ISD::BUILD_VECTOR, dl, ResultVT,
makeArrayRef(Vec->op_begin()+NormalizedIdxVal,
makeArrayRef(Vec->op_begin() + NormalizedIdxVal,
ElemsPerChunk));
SDValue VecIdx = DAG.getIntPtrConstant(NormalizedIdxVal);
@ -115,13 +115,13 @@ static SDValue ExtractSubVector(SDValue Vec, unsigned IdxVal,
VecIdx);
return Result;
}
/// Generate a DAG to grab 128-bits from a vector > 128 bits. This
/// sets things up to match to an AVX VEXTRACTF128 / VEXTRACTI128
/// or AVX-512 VEXTRACTF32x4 / VEXTRACTI32x4
/// instructions or a simple subregister reference. Idx is an index in the
/// 128 bits we want. It need not be aligned to a 128-bit bounday. That makes
/// 128 bits we want. It need not be aligned to a 128-bit boundary. That makes
/// lowering EXTRACT_VECTOR_ELT operations easier.
static SDValue Extract128BitVector(SDValue Vec, unsigned IdxVal,
SelectionDAG &DAG, SDLoc dl) {
@ -158,25 +158,23 @@ static SDValue InsertSubVector(SDValue Result, SDValue Vec,
* ElemsPerChunk);
SDValue VecIdx = DAG.getIntPtrConstant(NormalizedIdxVal);
return DAG.getNode(ISD::INSERT_SUBVECTOR, dl, ResultVT, Result, Vec,
VecIdx);
return DAG.getNode(ISD::INSERT_SUBVECTOR, dl, ResultVT, Result, Vec, VecIdx);
}
/// Generate a DAG to put 128-bits into a vector > 128 bits. This
/// sets things up to match to an AVX VINSERTF128/VINSERTI128 or
/// AVX-512 VINSERTF32x4/VINSERTI32x4 instructions or a
/// simple superregister reference. Idx is an index in the 128 bits
/// we want. It need not be aligned to a 128-bit boundary. That makes
/// lowering INSERT_VECTOR_ELT operations easier.
static SDValue Insert128BitVector(SDValue Result, SDValue Vec,
unsigned IdxVal, SelectionDAG &DAG,
SDLoc dl) {
static SDValue Insert128BitVector(SDValue Result, SDValue Vec, unsigned IdxVal,
SelectionDAG &DAG,SDLoc dl) {
assert(Vec.getValueType().is128BitVector() && "Unexpected vector size!");
return InsertSubVector(Result, Vec, IdxVal, DAG, dl, 128);
}
static SDValue Insert256BitVector(SDValue Result, SDValue Vec,
unsigned IdxVal, SelectionDAG &DAG,
SDLoc dl) {
static SDValue Insert256BitVector(SDValue Result, SDValue Vec, unsigned IdxVal,
SelectionDAG &DAG, SDLoc dl) {
assert(Vec.getValueType().is256BitVector() && "Unexpected vector size!");
return InsertSubVector(Result, Vec, IdxVal, DAG, dl, 256);
}
@ -230,13 +228,13 @@ void X86TargetLowering::resetOperationActions() {
// Set up the TargetLowering object.
static const MVT IntVTs[] = { MVT::i8, MVT::i16, MVT::i32, MVT::i64 };
// X86 is weird, it always uses i8 for shift amounts and setcc results.
// X86 is weird. It always uses i8 for shift amounts and setcc results.
setBooleanContents(ZeroOrOneBooleanContent);
// X86-SSE is even stranger. It uses -1 or 0 for vector masks.
setBooleanVectorContents(ZeroOrNegativeOneBooleanContent);
// For 64-bit since we have so many registers use the ILP scheduler, for
// 32-bit code use the register pressure specific scheduling.
// For 64-bit, since we have so many registers, use the ILP scheduler.
// For 32-bit, use the register pressure specific scheduling.
// For Atom, always use ILP scheduling.
if (Subtarget->isAtom())
setSchedulingPreference(Sched::ILP);
@ -248,7 +246,7 @@ void X86TargetLowering::resetOperationActions() {
TM.getSubtarget<X86Subtarget>().getRegisterInfo();
setStackPointerRegisterToSaveRestore(RegInfo->getStackRegister());
// Bypass expensive divides on Atom when compiling with O2
// Bypass expensive divides on Atom when compiling with O2.
if (TM.getOptLevel() >= CodeGenOpt::Default) {
if (Subtarget->hasSlowDivide32())
addBypassSlowDiv(32, 8);
@ -1517,7 +1515,7 @@ void X86TargetLowering::resetOperationActions() {
for (int i = MVT::v32i8; i != MVT::v8i64; ++i) {
MVT VT = (MVT::SimpleValueType)i;
// Do not attempt to promote non-256-bit vectors
// Do not attempt to promote non-256-bit vectors.
if (!VT.is512BitVector())
continue;
@ -1543,11 +1541,11 @@ void X86TargetLowering::resetOperationActions() {
const unsigned EltSize = VT.getVectorElementType().getSizeInBits();
// Do not attempt to promote non-256-bit vectors
// Do not attempt to promote non-256-bit vectors.
if (!VT.is512BitVector())
continue;
if ( EltSize < 32) {
if (EltSize < 32) {
setOperationAction(ISD::BUILD_VECTOR, VT, Custom);
setOperationAction(ISD::VSELECT, VT, Legal);
}
@ -1608,9 +1606,8 @@ void X86TargetLowering::resetOperationActions() {
setLibcallName(RTLIB::SINCOS_F32, "sincosf");
setLibcallName(RTLIB::SINCOS_F64, "sincos");
if (Subtarget->isTargetDarwin()) {
// For MacOSX, we don't want to the normal expansion of a libcall to
// sincos. We want to issue a libcall to __sincos_stret to avoid memory
// traffic.
// For MacOSX, we don't want the normal expansion of a libcall to sincos.
// We want to issue a libcall to __sincos_stret to avoid memory traffic.
setOperationAction(ISD::FSINCOS, MVT::f64, Custom);
setOperationAction(ISD::FSINCOS, MVT::f32, Custom);
}
@ -1995,7 +1992,7 @@ X86TargetLowering::LowerReturn(SDValue Chain,
SDValue ValToCopy = OutVals[i];
EVT ValVT = ValToCopy.getValueType();
// Promote values to the appropriate types
// Promote values to the appropriate types.
if (VA.getLocInfo() == CCValAssign::SExt)
ValToCopy = DAG.getNode(ISD::SIGN_EXTEND, dl, VA.getLocVT(), ValToCopy);
else if (VA.getLocInfo() == CCValAssign::ZExt)