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| author | Richard Guenther <rguenther@suse.de> | 2012-01-23 11:59:53 +0000 |
|---|---|---|
| committer | Richard Guenther <rguenther@suse.de> | 2012-01-23 11:59:53 +0000 |
| commit | 9e4e9b03efe7e8a70fa9f435e767f5e14c8bd371 (patch) | |
| tree | d7ac089a19b8b5ac63d48e21b3bf6072f31e9c4f /gcc/tree-sra.c | |
| parent | 720a912976b02618aa866d7da3b4c71409565282 (diff) | |
2012-01-23 Richard Guenther <rguenther@suse.de>
PR tree-optimization/51895
* tree-sra.c (decide_one_param_reduction): Avoid sub-optimal
parameter decomposition into BLKmode components.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@183429 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-sra.c')
| -rw-r--r-- | gcc/tree-sra.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c index 9c2d13875d9..f4146b2acbc 100644 --- a/gcc/tree-sra.c +++ b/gcc/tree-sra.c @@ -3914,6 +3914,13 @@ decide_one_param_reduction (struct access *repr) if (by_ref && repr->non_addressable) return 0; + /* Do not decompose a non-BLKmode param in a way that would + create BLKmode params. Especially for by-reference passing + (thus, pointer-type param) this is hardly worthwhile. */ + if (DECL_MODE (parm) != BLKmode + && TYPE_MODE (repr->type) == BLKmode) + return 0; + if (!by_ref || (!repr->grp_maybe_modified && !repr->grp_not_necessarilly_dereferenced)) total_size += repr->size; |