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| author | Richard Guenther <rguenther@suse.de> | 2011-04-20 15:50:26 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2011-04-20 15:50:26 +0000 |
| commit | d7978bff88f8db16bf28b247d4882c49eaccd623 (patch) | |
| tree | 7c56f6bd15fe4c1e8050bc6fbe899c1f27ee8cd1 /gcc/tree-if-conv.c | |
| parent | 9d12f71a54d11f490dca17c9d1f8a8fdf442dcb9 (diff) | |
| download | gcc-d7978bff88f8db16bf28b247d4882c49eaccd623.zip gcc-d7978bff88f8db16bf28b247d4882c49eaccd623.tar.gz gcc-d7978bff88f8db16bf28b247d4882c49eaccd623.tar.bz2 | |
re PR c/47892 (Fails to vectorize comparison code, if-conversion fails)
2011-04-20 Richard Guenther <rguenther@suse.de>
PR tree-optimization/47892
* tree-if-conv.c (if_convertible_stmt_p): Const builtins
are if-convertible.
* gcc.dg/vect/fast-math-ifcvt-1.c: New testcase.
From-SVN: r172774
Diffstat (limited to 'gcc/tree-if-conv.c')
| -rw-r--r-- | gcc/tree-if-conv.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/tree-if-conv.c b/gcc/tree-if-conv.c index 7ca6dee..450ddb2 100644 --- a/gcc/tree-if-conv.c +++ b/gcc/tree-if-conv.c @@ -719,6 +719,22 @@ if_convertible_stmt_p (gimple stmt, VEC (data_reference_p, heap) *refs) case GIMPLE_ASSIGN: return if_convertible_gimple_assign_stmt_p (stmt, refs); + case GIMPLE_CALL: + { + tree fndecl = gimple_call_fndecl (stmt); + if (fndecl) + { + int flags = gimple_call_flags (stmt); + if ((flags & ECF_CONST) + && !(flags & ECF_LOOPING_CONST_OR_PURE) + /* We can only vectorize some builtins at the moment, + so restrict if-conversion to those. */ + && DECL_BUILT_IN (fndecl)) + return true; + } + return false; + } + default: /* Don't know what to do with 'em so don't do anything. */ if (dump_file && (dump_flags & TDF_DETAILS)) |