[X86] Use 0x9 instead of 0x1 as the immediate in some masked floor pattern....

[X86] Use 0x9 instead of 0x1 as the immediate in some masked floor pattern. Similarly change 0x2 to 0xA for ceil.

This suppresses exceptions which is what we should be doing for ceil and floor. We already use the correct immediate
in patterns without masking.

llvm-svn: 360915