Document a known limitation of the status quo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185992 91177308-0d34-0410-b5e6-96231b3b80d8
Un-break the buildbot by tweaking the indirection flag.
Pulled in a testcase from the debuginfo-test suite.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185993 91177308-0d34-0410-b5e6-96231b3b80d8
Explicitly define ARMISelLowering::isFMAFasterThanFMulAndFAdd. No functionality change.

Currently ARM is the only backend that supports FMA instructions (for at least some subtargets) but does not implement this virtual, so FMAs are never generated except from explicit fma intrinsic calls. Apparently this is due to the fact that it supports both fused (one rounding step) and unfused (two rounding step) multiply + add instructions. This patch clarifies that this the case without changing behavior by implementing the virtual function to simply return false, as the default TargetLoweringBase version does.

It is possible that some cpus perform the fused version faster than the unfused version and vice-versa, so the function implementation should be revisited if hard data is found.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185994 91177308-0d34-0410-b5e6-96231b3b80d8
Fix typo


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185995 91177308-0d34-0410-b5e6-96231b3b80d8