Simplify the __builtin_constant_p test that was used to catch rC347417 failure
Simplify the __builtin_constant_p test that was used to catch rC347417 failure

Reviewers: rsmith, void, shafik

Reviewed By: void

Subscribers: kristina, cfe-commits

Differential Revision: https://reviews.llvm.org/D54964

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@347895 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang