tree c85a7b3c95f7b2562d03eaf1b95373a2ad5d284c
parent d6f833091fbacc73980b9c4018363455b6aa82a7
author Bill Wendling <isanbard@gmail.com> 1351207728 +0000
committer Bill Wendling <isanbard@gmail.com> 1351207728 +0000

Recommit Eric's code to validate ASM string's constraints and modifiers.

This code checks the ASM string to see if the output size is able to fit within
the variable specified as the output. For instance, scalar-to-vector conversions
may not really work. It's on by default, but can be turned off with a flag if
you think you know what you're doing.

This is placed under a flag ('-Wasm-operand-widths') and flag group ('-Wasm').

<rdar://problem/12284092>


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166737 91177308-0d34-0410-b5e6-96231b3b80d8