[llvm-commits] [llvm] r42919 - /llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
Dale Johannesen
dalej at apple.com
Fri Oct 12 10:52:03 PDT 2007
Author: johannes
Date: Fri Oct 12 12:52:03 2007
New Revision: 42919
URL: http://llvm.org/viewvc/llvm-project?rev=42919&view=rev
Log:
Implement i64->ppcf128 conversions.
Modified:
llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=42919&r1=42918&r2=42919&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Fri Oct 12 12:52:03 2007
@@ -6032,7 +6032,7 @@
case ISD::UINT_TO_FP: {
bool isSigned = Node->getOpcode() == ISD::SINT_TO_FP;
MVT::ValueType SrcVT = Node->getOperand(0).getValueType();
- if (VT == MVT::ppcf128) {
+ if (VT == MVT::ppcf128 && SrcVT != MVT::i64) {
static uint64_t zero = 0;
if (isSigned) {
Hi = LegalizeOp(DAG.getNode(ISD::SINT_TO_FP, MVT::f64,
@@ -6044,6 +6044,7 @@
Node->getOperand(0)));
Lo = DAG.getConstantFP(APFloat(APInt(64, 1, &zero)), MVT::f64);
Hi = DAG.getNode(ISD::BUILD_PAIR, VT, Lo, Hi);
+ // X>=0 ? {(f64)x, 0} : {(f64)x, 0} + 2^32
ExpandOp(DAG.getNode(ISD::SELECT_CC, MVT::ppcf128, Node->getOperand(0),
DAG.getConstant(0, MVT::i32),
DAG.getNode(ISD::FADD, MVT::ppcf128, Hi,
@@ -6056,6 +6057,24 @@
}
break;
}
+ if (VT == MVT::ppcf128 && SrcVT == MVT::i64 && !isSigned) {
+ // si64->ppcf128 done by libcall, below
+ static uint64_t TwoE64[] = { 0x43f0000000000000LL, 0 };
+ ExpandOp(DAG.getNode(ISD::SINT_TO_FP, MVT::ppcf128, Node->getOperand(0)),
+ Lo, Hi);
+ Hi = DAG.getNode(ISD::BUILD_PAIR, VT, Lo, Hi);
+ // x>=0 ? (ppcf128)(i64)x : (ppcf128)(i64)x + 2^64
+ ExpandOp(DAG.getNode(ISD::SELECT_CC, MVT::ppcf128, Node->getOperand(0),
+ DAG.getConstant(0, MVT::i64),
+ DAG.getNode(ISD::FADD, MVT::ppcf128, Hi,
+ DAG.getConstantFP(
+ APFloat(APInt(128, 2, TwoE64)),
+ MVT::ppcf128)),
+ Hi,
+ DAG.getCondCode(ISD::SETLT)),
+ Lo, Hi);
+ break;
+ }
RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL;
if (Node->getOperand(0).getValueType() == MVT::i64) {
if (VT == MVT::f32)
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