[inline asm] dot operator while using imm generates wrong ir + asm - llvm part

Inline asm dot operator while using imm generates wrong ir and asm

This also fixes bugzilla 32987:
https://bugs.llvm.org//show_bug.cgi?id=32987

The clang part of the review that contains the test can be found here:
https://reviews.llvm.org/D33040

commit on behald of zizhar

Differential Revision:
https://reviews.llvm.org/D33039

llvm-svn: 306300