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| author | Richard Biener <rguenther@suse.de> | 2015-08-03 07:13:36 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2015-08-03 07:13:36 +0000 |
| commit | 52639a61657c667c68a4a3e0656a67ed1a95a9b0 (patch) | |
| tree | 03864e5caa088bc8f553b9ca5791287f5d2b5a45 /gcc/tree-vectorizer.h | |
| parent | 94b8fdccca7aa703f4cafc57eef3a7f8776e1290 (diff) | |
| download | gcc-52639a61657c667c68a4a3e0656a67ed1a95a9b0.zip gcc-52639a61657c667c68a4a3e0656a67ed1a95a9b0.tar.gz gcc-52639a61657c667c68a4a3e0656a67ed1a95a9b0.tar.bz2 | |
re PR tree-optimization/66917 (ARM: NEON: memcpy compiles to vst1 with incorrect alignment)
2015-08-03 Richard Biener <rguenther@suse.de>
PR tree-optimization/66917
* tree-vectorizer.h (struct dataref_aux): Add base_element_aligned
field.
(DR_VECT_AUX): New macro.
(set_dr_misalignment): Adjust.
(dr_misalignment): Likewise.
* tree-vect-data-refs.c (vect_compute_data_ref_alignment):
Compute whether the base is at least element aligned.
* tree-vect-stmts.c (ensure_base_align): Adjust.
(vectorizable_store): If the base is not element aligned
preserve alignment of the original access if misalignment is unknown.
(vectorizable_load): Likewise.
From-SVN: r226487
Diffstat (limited to 'gcc/tree-vectorizer.h')
| -rw-r--r-- | gcc/tree-vectorizer.h | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/gcc/tree-vectorizer.h b/gcc/tree-vectorizer.h index dfa8795..170dd18 100644 --- a/gcc/tree-vectorizer.h +++ b/gcc/tree-vectorizer.h @@ -707,11 +707,16 @@ typedef struct _stmt_vec_info { #define STMT_SLP_TYPE(S) (S)->slp_type struct dataref_aux { - tree base_decl; - bool base_misaligned; int misalignment; + /* If true the alignment of base_decl needs to be increased. */ + bool base_misaligned; + /* If true we know the base is at least vector element alignment aligned. */ + bool base_element_aligned; + tree base_decl; }; +#define DR_VECT_AUX(dr) ((dataref_aux *)(dr)->aux) + #define VECT_MAX_COST 1000 /* The maximum number of intermediate steps required in multi-step type @@ -910,14 +915,13 @@ destroy_cost_data (void *data) targetm.vectorize.destroy_cost_data (data); } - /*-----------------------------------------------------------------*/ /* Info on data references alignment. */ /*-----------------------------------------------------------------*/ inline void set_dr_misalignment (struct data_reference *dr, int val) { - dataref_aux *data_aux = (dataref_aux *) dr->aux; + dataref_aux *data_aux = DR_VECT_AUX (dr); if (!data_aux) { @@ -931,8 +935,7 @@ set_dr_misalignment (struct data_reference *dr, int val) inline int dr_misalignment (struct data_reference *dr) { - gcc_assert (dr->aux); - return ((dataref_aux *) dr->aux)->misalignment; + return DR_VECT_AUX (dr)->misalignment; } /* Reflects actual alignment of first access in the vectorized loop, |