[Bug middle-end/23848] [4.0/4.1/4.2/4.3 Regression] stack deallocation can be more efficient

[jakub at gcc dot gnu dot org]

------- Comment #5 from jakub at gcc dot gnu dot org  2007-11-15 19:03 -------
Subject: Bug 23848

Author: jakub
Date: Thu Nov 15 19:02:54 2007
New Revision: 130206

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130206
Log:
        PR middle-end/23848
        * tree-ssa-ccp.c (optimize_stack_restore): New function.
        (execute_fold_all_builtins): Call optimize_stack_restore for
        BUILT_IN_STACK_RESTORE.

        * gcc.dg/tree-ssa/pr23848-1.c: New test.
        * gcc.dg/tree-ssa/pr23848-2.c: New test.
        * gcc.dg/tree-ssa/pr23848-3.c: New test.
        * gcc.dg/tree-ssa/pr23848-4.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr23848-1.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr23848-2.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr23848-3.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr23848-4.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23848