diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-03-01 16:57:02 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-03-01 16:57:02 +0000 |
| commit | c40a6f906600da14fa8a9d5846f4478da8ddebc4 (patch) | |
| tree | dce5f3e5cbf410a30b6490696932190d8e2cdfe1 /gcc/tree-ssa-ccp.c | |
| parent | 4847708aa3b5f0e9611dc2c914233db9bc1555d2 (diff) | |
| download | gcc-c40a6f906600da14fa8a9d5846f4478da8ddebc4.tar.gz | |
2010-03-01 Richard Guenther <rguenther@suse.de>
PR tree-optimization/43220
* tree-ssa-ccp.c (optimize_stack_restore): Do not optimize
BUILT_IN_STACK_{SAVE,RESTORE} around alloca.
* gcc.c-torture/execute/pr43220.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@157149 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-ccp.c')
| -rw-r--r-- | gcc/tree-ssa-ccp.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index a4869d287ac..03c35001718 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -3203,7 +3203,10 @@ optimize_stack_restore (gimple_stmt_iterator i) continue; callee = gimple_call_fndecl (stmt); - if (!callee || DECL_BUILT_IN_CLASS (callee) != BUILT_IN_NORMAL) + if (!callee + || DECL_BUILT_IN_CLASS (callee) != BUILT_IN_NORMAL + /* All regular builtins are ok, just obviously not alloca. */ + || DECL_FUNCTION_CODE (callee) == BUILT_IN_ALLOCA) return NULL_TREE; if (DECL_FUNCTION_CODE (callee) == BUILT_IN_STACK_RESTORE) |