Refactor: Simplify boolean expressions in x86 target

Simplify boolean expressions with `true` and `false` with `clang-tidy`

Patch by Richard Thomson.

Differential Revision: http://reviews.llvm.org/D8519

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233002 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed