Making useAA() default to true for SystemZ showed that the combiner alias analysis wasn't handling volatile accesses. This hit many of the SystemZ tests, but I arbitrarily picked one for the purpose of this patch. llvm-svn: 193518
Making useAA() default to true for SystemZ showed that the combiner alias analysis wasn't handling volatile accesses. This hit many of the SystemZ tests, but I arbitrarily picked one for the purpose of this patch. llvm-svn: 193518