2 Commits

Author	SHA1	Message	Date
NAKAMURA Takumi	7f52d6d82c	llvm/test/CodeGen/AArch64/tailcall_misched_graph.ll: s/REQUIRE/REQUIRES/ ... llvm-svn: 236928	2015-05-09 05:59:00 +00:00
Arnold Schwaighofer	f54b73d681	ScheduleDAGInstrs: In functions with tail calls PseudoSourceValues are not non-aliasing distinct objects ... The code that builds the dependence graph assumes that two PseudoSourceValues don't alias. In a tail calling function two FixedStackObjects might refer to the same location. Worse 'immutable' fixed stack objects like function arguments are not immutable and will be clobbered. Change this so that a load from a FixedStackObject is not invariant in a tail calling function and don't return a PseudoSourceValue for an instruction in tail calling functions when building the dependence graph so that we handle function arguments conservatively. Fix for PR23459. rdar://20740035 llvm-svn: 236916	2015-05-08 23:52:00 +00:00