diff options
| author | Dale Johannesen <dalej@apple.com> | 2007-10-12 17:52:03 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2007-10-12 17:52:03 +0000 |
| commit | 6e63e092365b763b65cc97a4d2c634443046c15a (patch) | |
| tree | c8c9ea7576dbc772059cd29452099542a603c630 /lib | |
| parent | b89f67e3e659da1f11c01f2aac1be3463dc60f07 (diff) | |
Implement i64->ppcf128 conversions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42919 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 3132d892fe..c8fd78f253 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -6032,7 +6032,7 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){ 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 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){ 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 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){ } 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) |