Gerolf Hoflehner d63bafa58b [MachineCombiner] Support for floating-point FMA on ARM64 ...

Evaluates fmul+fadd -> fmadd combines and similar code sequences in the
machine combiner. It adds support for float and double similar to the existing
integer implementation. The key features are:

- DAGCombiner checks whether it should combine greedily or let the machine
combiner do the evaluation. This is only supported on ARM64.
- It gives preference to throughput over latency: the heuristic used is
to combine always in loops. The targets decides whether the machine
combiner should optimize for throughput or latency.
- Supports for fmadd, f(n)msub, fmla, fmls patterns
- On by default at O3 ffast-math

llvm-svn: 267098

2016-04-22 02:15:19 +00:00

..

llvm

[MachineCombiner] Support for floating-point FMA on ARM64

2016-04-22 02:15:19 +00:00

llvm-c

Add LLVMGetAttrKindID in the C API in order to facilitate migration away from LLVMAttribute

2016-04-20 01:02:12 +00:00