https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65358
--- Comment #24 from ktkachov at gcc dot gnu.org --- Author: ktkachov Date: Wed May 27 13:25:01 2015 New Revision: 223753 URL: https://gcc.gnu.org/viewcvs?rev=223753&root=gcc&view=rev Log: [expr.c] PR target/65358 Avoid clobbering partial argument during sibcall PR target/65358 * expr.c (memory_load_overlap): New function. (emit_push_insn): When pushing partial args to the stack would clobber the register part load the overlapping part into a pseudo and put it into the hard reg after pushing. Change return type to bool. Add bool argument. * expr.h (emit_push_insn): Change return type to bool. Add bool argument. * calls.c (expand_call): Cancel sibcall optimization when encountering partial argument on targets with ARGS_GROW_DOWNWARD and !STACK_GROWS_DOWNWARD. (emit_library_call_value_1): Update callsite of emit_push_insn. (store_one_arg): Likewise. PR target/65358 * gcc.dg/pr65358.c: New test. Added: trunk/gcc/testsuite/gcc.dg/pr65358.c Modified: trunk/gcc/ChangeLog trunk/gcc/calls.c trunk/gcc/expr.c trunk/gcc/expr.h trunk/gcc/testsuite/ChangeLog
