[PATCH] D50798: [LoopVectorizer] Take into account call register pressure when selecting interleave count

[Noel Grandin via Phabricator via llvm-commits]

grandinj added inline comments.


================
Comment at: lib/Target/X86/X86TargetTransformInfo.cpp:191
+unsigned X86TTIImpl::getNumberOfCallPreservedRegisters(bool Vector) {
+  if (ST->isOSWindows())
+    return 8;
----------------
perhaps an

    assert(hasNumberOfCallPreservedRegisters() && "you need to call hasNumberOfCallPreservedRegisters before calling this")

would be a good idea here, to catch incorrect usage?



Repository:
  rL LLVM

https://reviews.llvm.org/D50798