[mips] Fix fp select machine verifier errors
Introduced FSELECT node necesary when lowering ISD::SELECT
which has i32, f64, f64 as its operands.
SEL_D instruction required that its output and first operand
of a SELECT node, which it used, have matching types.
MTC1_D64 node introduced to aid FSELECT lowering.
This fixes machine verifier errors on following tests:
CodeGen/Mips/llvm-ir/select-dbl.ll
CodeGen/Mips/llvm-ir/select-flt.ll
CodeGen/Mips/select.ll
Differential Revision: https://reviews.llvm.org/D35408
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308595 91177308-0d34-0410-b5e6-96231b3b80d8
11 files changed