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| author | Richard Guenther <rguenther@suse.de> | 2010-03-01 16:57:02 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2010-03-01 16:57:02 +0000 |
| commit | 12f9ddbc7da85ff73fc4fd4bf6a15cd30cefdef4 (patch) | |
| tree | dce5f3e5cbf410a30b6490696932190d8e2cdfe1 /gcc/tree-ssa-ccp.c | |
| parent | f0c10f0fabb9b9559f9eeee4a8d1ec663df89aa1 (diff) | |
| download | gcc-12f9ddbc7da85ff73fc4fd4bf6a15cd30cefdef4.zip gcc-12f9ddbc7da85ff73fc4fd4bf6a15cd30cefdef4.tar.gz gcc-12f9ddbc7da85ff73fc4fd4bf6a15cd30cefdef4.tar.bz2 | |
re PR tree-optimization/43220 (Paritially optimized __builtin_save_stack/__builtin_restore_stack causes segmentation fault)
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.
From-SVN: r157149
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 a4869d2..03c3500 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) |