Add mips64r6 target and corresponding mips32r6 target.
Defaults remain as mips64r2 and mips32r2.
Apply -FP64A codegen subsetting to mips32r6 only.
Access FR=0 odd-numbered 32-bit float regs only via
double-prec even-numbered regs, not by single-prec ops.
(cherry picked from commit 6bab974cdc)
Change-Id: I447337ce56c15e86cec505d68a6b45294fc3ba77
Use 4.9 mips64el toolchain for both 64- and 32-bit builds.
Tell ld when 32-bit links are required.
Override 4.9's changed defaults for mips floating point
register use, to get same assembler rules as 4.8 and earlier.
Also: drop unused soft-fp build targets, cleanout redundant
compiler options, and remove extraneous Android.mk file.
(cherry picked from commit 6670e24aed)
Change-Id: I34d2f8fc6113c9d1670e3acff1aff48634b9fe1b
1. Following the setup of gcc in build/core/combo/,
we added the [HOST|TARGET]_<arch>.mk clang config files,
and load only the configs needed by the current product.
2. Added support for the 2nd arch.
Change-Id: I2a383418a9688a050b39492f8e489d40eeeb5f2d
