re PR middle-end/52691 (va_start to builtin_next_arg optimization lost)
authorJakub Jelinek <jakub@redhat.com>
Wed, 28 Mar 2012 14:47:45 +0000 (16:47 +0200)
committerJakub Jelinek <jakub@gcc.gnu.org>
Wed, 28 Mar 2012 14:47:45 +0000 (16:47 +0200)
commitf25a65f5d1c160e8e90bd8b4bfdc30437d00b482
tree9ae131a36d66e181fa70e08625f81cc6b17e71d7
parent6df000ae2d8ce9dfb1e1c1198b30559ca8a1f290
re PR middle-end/52691 (va_start to builtin_next_arg optimization lost)

PR middle-end/52691
* tree-ssa-ccp.c (optimize_stdarg_builtin): Optimize
__builtin_va_start to __builtin_next_arg if the latter is
builtin_decl_explicit_p rather than when it is not.

* gcc.dg/pr52691.c: New test.

From-SVN: r185917
gcc/ChangeLog
gcc/testsuite/ChangeLog
gcc/testsuite/gcc.dg/pr52691.c [new file with mode: 0644]
gcc/tree-ssa-ccp.c