//===---------------------------------------------------------------------===//
+If SSE4.1 is available we should inline rounding functions instead of emitting
+a libcall.
+floor: roundsd $0x01, %xmm, %xmm
+ceil: roundsd $0x02, %xmm, %xmm
+
+and likewise for the single precision versions.
+
+Currently, SelectionDAGBuilder doesn't turn calls to these functions into the
+corresponding nodes and some targets (including X86) aren't ready for them.
+
+//===---------------------------------------------------------------------===//