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Add APInt interfaces to APFloat (allows directly

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access to bits).  Use them in place of float and
double interfaces where appropriate.
First bits of x86 long double constants handling 
(untested, probably does not work).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41858 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen
2007-09-11 18:32:33 +00:00
parent 6320260e06
commit 3f6eb7419d
16 changed files with 309 additions and 100 deletions
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8
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
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@@ -3800,7 +3800,8 @@ SDOperand DAGCombiner::visitSTORE(SDNode *N) {
default: assert(0 && "Unknown FP type");
case MVT::f32:
if (!AfterLegalize || TLI.isTypeLegal(MVT::i32)) {
Tmp = DAG.getConstant(FloatToBits(CFP->getValueAPF().convertToFloat()), MVT::i32);
Tmp = DAG.getConstant((uint32_t)*CFP->getValueAPF().
convertToAPInt().getRawData(), MVT::i32);
return DAG.getStore(Chain, Tmp, Ptr, ST->getSrcValue(),
ST->getSrcValueOffset(), ST->isVolatile(),
ST->getAlignment());
@@ -3808,7 +3809,8 @@ SDOperand DAGCombiner::visitSTORE(SDNode *N) {
break;
case MVT::f64:
if (!AfterLegalize || TLI.isTypeLegal(MVT::i64)) {
Tmp = DAG.getConstant(DoubleToBits(CFP->getValueAPF().convertToDouble()), MVT::i64);
Tmp = DAG.getConstant(*CFP->getValueAPF().convertToAPInt().
getRawData(), MVT::i64);
return DAG.getStore(Chain, Tmp, Ptr, ST->getSrcValue(),
ST->getSrcValueOffset(), ST->isVolatile(),
ST->getAlignment());
@@ -3816,7 +3818,7 @@ SDOperand DAGCombiner::visitSTORE(SDNode *N) {
// Many FP stores are not make apparent until after legalize, e.g. for
// argument passing. Since this is so common, custom legalize the
// 64-bit integer store into two 32-bit stores.
uint64_t Val = DoubleToBits(CFP->getValueAPF().convertToDouble());
uint64_t Val = *CFP->getValueAPF().convertToAPInt().getRawData();
SDOperand Lo = DAG.getConstant(Val & 0xFFFFFFFF, MVT::i32);
SDOperand Hi = DAG.getConstant(Val >> 32, MVT::i32);
if (!TLI.isLittleEndian()) std::swap(Lo, Hi);