[compiler-rt] Fix crtbegin.c compilation
We're building with -std=c11 now (as opposed to -std=gnu11), so we can't
use GNU extensions and need to spell inline assembly as __asm__.
llvm-svn: 360503
This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.
