Commit Graph

3 Commits

Author SHA1 Message Date
Sanjay Patel fbcd189f8a [x86] fix allowsMisalignedMemoryAccesses() for 8-byte and smaller accesses
This is a continuation of the fix from:
http://reviews.llvm.org/D10662

and discussion in:
http://reviews.llvm.org/D12154

Here, we distinguish slow unaligned SSE (128-bit) accesses from slow unaligned
scalar (64-bit and under) accesses. Other lowering (eg, getOptimalMemOpType) 
assumes that unaligned scalar accesses are always ok, so this changes 
allowsMisalignedMemoryAccesses() to match that behavior.

Differential Revision: http://reviews.llvm.org/D12543

llvm-svn: 246658
2015-09-02 15:42:49 +00:00
Sanjay Patel dd175bc6c4 make current codegen visible in the checks, so we can decide if it's right
llvm-svn: 245108
2015-08-14 22:10:59 +00:00
Michael Liao abb87d4857 Fix PR11985
- BlockAddress has no support of BA + offset form and there is no way to
  propagate that offset into machine operand;
- Add BA + offset support and a new interface 'getTargetBlockAddress' to
  simplify target block address forming;
- All targets are modified to use new interface and X86 backend is enhanced to
  support BA + offset addressing.

llvm-svn: 163743
2012-09-12 21:43:09 +00:00