diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/FastISel.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp index ac35c43..ff07d9a 100644 --- a/lib/CodeGen/SelectionDAG/FastISel.cpp +++ b/lib/CodeGen/SelectionDAG/FastISel.cpp @@ -525,6 +525,12 @@ unsigned FastISel::FastEmit_rf_(MVT::SimpleValueType VT, ISD::NodeType Opcode, // Materialize the constant in a register. unsigned MaterialReg = FastEmit_f(ImmType, ImmType, ISD::ConstantFP, FPImm); if (MaterialReg == 0) { + // If the target doesn't have a way to directly enter a floating-point + // value into a register, use an alternate approach. + // TODO: The current approach only supports floating-point constants + // that can be constructed by conversion from integer values. This should + // be replaced by code that creates a load from a constant-pool entry, + // which will require some target-specific work. const APFloat &Flt = FPImm->getValueAPF(); MVT IntVT = TLI.getPointerTy(); |