While it can be correct from some point of view, it does not prevent aliasing a single-precision register into upper half of double-precision one. This is currently handled by making only even floating-point registers available to RA. At the same time, it somehow (possibly due to another bug in RA) generates a lot of unnecessary moves, as if physical double-precision registers conflict with each other. Anyway, removing it considerably improves the code without regressions in the test suite.
git-svn-id: trunk@27999 -
do_spill_replace routines, will be necessary by llvm register
allocator to determine the tdef corresponding to that register
* replaced uses of taicpu with tai_cpu_abstract_sym in the register
allocator so that it can work both with taicpu and taillvm instructions
git-svn-id: branches/hlcgllvm@26043 -
+ Implemented subset of "spill replace" functionality, replacing moves from/to spilled registers with loads/stores to spill locations. This helps to reduce amount of instructions.
git-svn-id: trunk@24900 -
