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Fix integer cast code to handle vector types.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91362 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-12-14 23:40:38 +00:00
parent e3040e4ae5
commit 2e141d744e
4 changed files with 69 additions and 22 deletions
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2
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@ -5196,7 +5196,7 @@ SDValue DAGCombiner::visitSTORE(SDNode *N) {
// SimplifyDemandedBits, which only works if the value has a single use.
if (SimplifyDemandedBits(Value,
APInt::getLowBitsSet(
Value.getValueSizeInBits(),
Value.getValueType().getScalarType().getSizeInBits(),
ST->getMemoryVT().getSizeInBits())))
return SDValue(N, 0);
}

61
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
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@ -2354,6 +2354,10 @@ SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL,
assert(VT.isFloatingPoint() &&
Operand.getValueType().isFloatingPoint() && "Invalid FP cast!");
if (Operand.getValueType() == VT) return Operand; // noop conversion.
assert((!VT.isVector() ||
VT.getVectorNumElements() ==
Operand.getValueType().getVectorNumElements()) &&
"Vector element count mismatch!");
if (Operand.getOpcode() == ISD::UNDEF)
return getUNDEF(VT);
break;
@ -2361,8 +2365,12 @@ SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL,
assert(VT.isInteger() && Operand.getValueType().isInteger() &&
"Invalid SIGN_EXTEND!");
if (Operand.getValueType() == VT) return Operand; // noop extension
assert(Operand.getValueType().bitsLT(VT)
&& "Invalid sext node, dst < src!");
assert(Operand.getValueType().getScalarType().bitsLT(VT.getScalarType()) &&
"Invalid sext node, dst < src!");
assert((!VT.isVector() ||
VT.getVectorNumElements() ==
Operand.getValueType().getVectorNumElements()) &&
"Vector element count mismatch!");
if (OpOpcode == ISD::SIGN_EXTEND || OpOpcode == ISD::ZERO_EXTEND)
return getNode(OpOpcode, DL, VT, Operand.getNode()->getOperand(0));
break;
@ -2370,8 +2378,12 @@ SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL,
assert(VT.isInteger() && Operand.getValueType().isInteger() &&
"Invalid ZERO_EXTEND!");
if (Operand.getValueType() == VT) return Operand; // noop extension
assert(Operand.getValueType().bitsLT(VT)
&& "Invalid zext node, dst < src!");
assert(Operand.getValueType().getScalarType().bitsLT(VT.getScalarType()) &&
"Invalid zext node, dst < src!");
assert((!VT.isVector() ||
VT.getVectorNumElements() ==
Operand.getValueType().getVectorNumElements()) &&
"Vector element count mismatch!");
if (OpOpcode == ISD::ZERO_EXTEND) // (zext (zext x)) -> (zext x)
return getNode(ISD::ZERO_EXTEND, DL, VT,
Operand.getNode()->getOperand(0));
@ -2380,8 +2392,12 @@ SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL,
assert(VT.isInteger() && Operand.getValueType().isInteger() &&
"Invalid ANY_EXTEND!");
if (Operand.getValueType() == VT) return Operand; // noop extension
assert(Operand.getValueType().bitsLT(VT)
&& "Invalid anyext node, dst < src!");
assert(Operand.getValueType().getScalarType().bitsLT(VT.getScalarType()) &&
"Invalid anyext node, dst < src!");
assert((!VT.isVector() ||
VT.getVectorNumElements() ==
Operand.getValueType().getVectorNumElements()) &&
"Vector element count mismatch!");
if (OpOpcode == ISD::ZERO_EXTEND || OpOpcode == ISD::SIGN_EXTEND)
// (ext (zext x)) -> (zext x) and (ext (sext x)) -> (sext x)
return getNode(OpOpcode, DL, VT, Operand.getNode()->getOperand(0));
@ -2390,14 +2406,19 @@ SDValue SelectionDAG::getNode(unsigned Opcode, DebugLoc DL,
assert(VT.isInteger() && Operand.getValueType().isInteger() &&
"Invalid TRUNCATE!");
if (Operand.getValueType() == VT) return Operand; // noop truncate
assert(Operand.getValueType().bitsGT(VT)
&& "Invalid truncate node, src < dst!");
assert(Operand.getValueType().getScalarType().bitsGT(VT.getScalarType()) &&
"Invalid truncate node, src < dst!");
assert((!VT.isVector() ||
VT.getVectorNumElements() ==
Operand.getValueType().getVectorNumElements()) &&
"Vector element count mismatch!");
if (OpOpcode == ISD::TRUNCATE)
return getNode(ISD::TRUNCATE, DL, VT, Operand.getNode()->getOperand(0));
else if (OpOpcode == ISD::ZERO_EXTEND || OpOpcode == ISD::SIGN_EXTEND ||
OpOpcode == ISD::ANY_EXTEND) {
// If the source is smaller than the dest, we still need an extend.
if (Operand.getNode()->getOperand(0).getValueType().bitsLT(VT))
if (Operand.getNode()->getOperand(0).getValueType().getScalarType()
.bitsLT(VT.getScalarType()))
return getNode(OpOpcode, DL, VT, Operand.getNode()->getOperand(0));
else if (Operand.getNode()->getOperand(0).getValueType().bitsGT(VT))
return getNode(ISD::TRUNCATE, DL, VT, Operand.getNode()->getOperand(0));
@ -3743,16 +3764,15 @@ SelectionDAG::getLoad(ISD::MemIndexedMode AM, DebugLoc dl,
assert(VT == MemVT && "Non-extending load from different memory type!");
} else {
// Extending load.
if (VT.isVector())
assert(MemVT.getVectorNumElements() == VT.getVectorNumElements() &&
"Invalid vector extload!");
else
assert(MemVT.bitsLT(VT) &&
assert(MemVT.getScalarType().bitsLT(VT.getScalarType()) &&
"Should only be an extending load, not truncating!");
assert((ExtType == ISD::EXTLOAD || VT.isInteger()) &&
"Cannot sign/zero extend a FP/Vector load!");
assert(VT.isInteger() == MemVT.isInteger() &&
"Cannot convert from FP to Int or Int -> FP!");
assert(VT.isVector() == MemVT.isVector() &&
"Cannot use trunc store to convert to or from a vector!");
assert((!VT.isVector() ||
VT.getVectorNumElements() == MemVT.getVectorNumElements()) &&
"Cannot use trunc store to change the number of vector elements!");
}
bool Indexed = AM != ISD::UNINDEXED;
@ -3885,10 +3905,15 @@ SDValue SelectionDAG::getTruncStore(SDValue Chain, DebugLoc dl, SDValue Val,
if (VT == SVT)
return getStore(Chain, dl, Val, Ptr, MMO);
assert(VT.bitsGT(SVT) && "Not a truncation?");
assert(SVT.getScalarType().bitsLT(VT.getScalarType()) &&
"Should only be a truncating store, not extending!");
assert(VT.isInteger() == SVT.isInteger() &&
"Can't do FP-INT conversion!");
assert(VT.isVector() == SVT.isVector() &&
"Cannot use trunc store to convert to or from a vector!");
assert((!VT.isVector() ||
VT.getVectorNumElements() == SVT.getVectorNumElements()) &&
"Cannot use trunc store to change the number of vector elements!");
SDVTList VTs = getVTList(MVT::Other);
SDValue Undef = getUNDEF(Ptr.getValueType());

13
lib/Target/X86/X86ISelLowering.cpp
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@ -596,6 +596,17 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
setOperationAction(ISD::UINT_TO_FP, (MVT::SimpleValueType)VT, Expand);
setOperationAction(ISD::SINT_TO_FP, (MVT::SimpleValueType)VT, Expand);
setOperationAction(ISD::SIGN_EXTEND_INREG, (MVT::SimpleValueType)VT,Expand);
setOperationAction(ISD::TRUNCATE, (MVT::SimpleValueType)VT, Expand);
setOperationAction(ISD::SIGN_EXTEND, (MVT::SimpleValueType)VT, Expand);
setOperationAction(ISD::ZERO_EXTEND, (MVT::SimpleValueType)VT, Expand);
setOperationAction(ISD::ANY_EXTEND, (MVT::SimpleValueType)VT, Expand);
for (unsigned InnerVT = (unsigned)MVT::FIRST_VECTOR_VALUETYPE;
InnerVT <= (unsigned)MVT::LAST_VECTOR_VALUETYPE; ++InnerVT)
setTruncStoreAction((MVT::SimpleValueType)VT,
(MVT::SimpleValueType)InnerVT, Expand);
setLoadExtAction(ISD::SEXTLOAD, (MVT::SimpleValueType)VT, Expand);
setLoadExtAction(ISD::ZEXTLOAD, (MVT::SimpleValueType)VT, Expand);
setLoadExtAction(ISD::EXTLOAD, (MVT::SimpleValueType)VT, Expand);
}
// FIXME: In order to prevent SSE instructions being expanded to MMX ones
@ -672,8 +683,6 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v4i16, Custom);
setTruncStoreAction(MVT::v8i16, MVT::v8i8, Expand);
setOperationAction(ISD::TRUNCATE, MVT::v8i8, Expand);
setOperationAction(ISD::SELECT, MVT::v8i8, Promote);
setOperationAction(ISD::SELECT, MVT::v4i16, Promote);
setOperationAction(ISD::SELECT, MVT::v2i32, Promote);

13
test/CodeGen/X86/vec-trunc-store.ll Normal file
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@ -0,0 +1,13 @@
; RUN: llc < %s -march=x86-64 -disable-mmx | grep punpcklwd | count 2
define void @foo() nounwind {
%cti69 = trunc <8 x i32> undef to <8 x i16> ; <<8 x i16>> [#uses=1]
store <8 x i16> %cti69, <8 x i16>* undef
ret void
}
define void @bar() nounwind {
%cti44 = trunc <4 x i32> undef to <4 x i16> ; <<4 x i16>> [#uses=1]
store <4 x i16> %cti44, <4 x i16>* undef
ret void
}