[WebAssembly] Add target flags for sign-ext opcodes.
authorDan Gohman <dan433584@gmail.com>
Fri, 19 Jan 2018 17:16:32 +0000 (17:16 +0000)
committerDan Gohman <dan433584@gmail.com>
Fri, 19 Jan 2018 17:16:32 +0000 (17:16 +0000)
commitd0c4e1e9fcf8eb9e9bc0d8d19c777daabd8b34db
tree83165a62ceeac7170d084f9f905bcae51bfb3aa4
parent5d2b9354b131f6665ce380c9d9267f11cf7fd55e
[WebAssembly] Add target flags for sign-ext opcodes.

Add -msign-ext and -mno-sign-ext to control the new sign-ext target
feature.

llvm-svn: 322967
clang/docs/ClangCommandLineReference.rst
clang/include/clang/Driver/Options.td
clang/lib/Basic/Targets/WebAssembly.cpp
clang/lib/Basic/Targets/WebAssembly.h