llvm with tablegen backend for capstone disassembler

Duncan Sands 723849a17f Initial soft-float support for LegalizeTypes. I rewrote ... the fcopysign expansion from LegalizeDAG to get rid of what seems to be a bug: the use of sign extension means that when copying the sign bit from an f32 to an f64, the upper 32 bits of the f64 (now an i64) are set, not just the top bit... I also generalized it to work for any sized floating point types, and removed the bogosity: SDOperand Mask1 = (SrcVT == MVT::f64) ? DAG.getConstantFP(BitsToDouble(1ULL << 63), SrcVT) : DAG.getConstantFP(BitsToFloat(1U << 31), SrcVT); Mask1 = DAG.getNode(ISD::BIT_CONVERT, SrcNVT, Mask1); (here SrcNVT is an integer with the same size as SrcVT). As far as I can see this takes a 1 << 63, converts to a double, converts that to a floating point constant then converts that to an integer constant, ending up with... 1 << 63 as an integer constant! So I just generate this integer constant directly. llvm-svn: 48305		2008-03-12 21:27:04 +00:00
clang	Minor aesthetic improvement (after I reviewed my last commit).	2008-03-12 21:22:52 +00:00
llvm	Initial soft-float support for LegalizeTypes. I rewrote	2008-03-12 21:27:04 +00:00