diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-11 19:57:23 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-11 19:57:23 +0000 |
| commit | 4b4d1c3b10f0666c1b6775e7ad3775969f35601b (patch) | |
| tree | 91a92cdc2750682c8d6499479f8bc9594df60236 /gcc/tree-stdarg.c | |
| parent | 529fcc2a2fdcedb8c5d3b6dc455a1ee1de936fe7 (diff) | |
PR tree-optimization/51091
* tree-stdarg.c (execute_optimize_stdarg): Ignore TREE_CLOBBER_P
rhs also in the va_list_simple_ptr case.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181299 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-stdarg.c')
| -rw-r--r-- | gcc/tree-stdarg.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/tree-stdarg.c b/gcc/tree-stdarg.c index ef898ee5bbdf..9b7a126b1ef4 100644 --- a/gcc/tree-stdarg.c +++ b/gcc/tree-stdarg.c @@ -1,5 +1,5 @@ /* Pass computing data for optimizing stdarg functions. - Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010 + Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. Contributed by Jakub Jelinek <jakub@redhat.com> @@ -847,8 +847,12 @@ execute_optimize_stdarg (void) if (get_gimple_rhs_class (gimple_assign_rhs_code (stmt)) == GIMPLE_SINGLE_RHS) { + /* Check for ap ={v} {}. */ + if (TREE_CLOBBER_P (rhs)) + continue; + /* Check for tem = ap. */ - if (va_list_ptr_read (&si, rhs, lhs)) + else if (va_list_ptr_read (&si, rhs, lhs)) continue; /* Check for the last insn in: @@ -875,6 +879,7 @@ execute_optimize_stdarg (void) /* Check for ap ={v} {}. */ if (TREE_CLOBBER_P (rhs)) continue; + /* Check for ap[0].field = temp. */ else if (va_list_counter_struct_op (&si, lhs, rhs, true)) continue; |