Fix a (harmless) but where vregs were added to the used reg lists for 
inline asms.

Fix PR2078 by marking aliases of registers used when a register is 
marked used.  This prevents EAX from being allocated when AX is listed
in the clobber set for the asm.

llvm-svn: 47426
2 files changed
tree: 996aa3bd0932b79cfee8015e518d23febc86cd33
  1. clang/
  2. llvm/