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Diffstat (limited to 'gcc/ChangeLog')
| -rw-r--r-- | gcc/ChangeLog | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a38894e44e0..7994797e19f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,39 @@ +2007-12-06 Harsha Jagasia <harsha.jagasia@amd.com> + + * tree-vectorizer.c (slpeel_add_loop_guard): Gimplify the condition. + (set_prologue_iterations): New. Set the prologue iterations to total + number of scalar iterations if the cost model check indicates that + scalar code should be generated. + (slpeel_tree_peel_loop_to_edge): Add a new parameter and code for + generating the cost condition for epilog. Call + set_prologue_iterations to generate cost condition for prolog. + (new_loop_vec_info): Initialize LOOP_VINFO_NITERS_UNCHANGED. + * tree-vectorizer.h (LOOP_VINFO_NITERS_UNCHANGED): New. + (slpeel_tree_peel_loop_to_edge): Update declaration. + (set_prologue_iterations): New declaration. + * tree-vect-analyze.c (vect_analyze_loop_form): Update + LOOP_VINFO_NITERS_UNCHANGED. + * tree-vect-transform.c + (vect_estimate_min_profitable_iters): Add new parameter and + code to check if run time cost model test is needed. + Remove code that adds builtin vectorization cost to scalar + outside cost for the run time cost model test. If run time + cost model test is needed add the appropriate guard cost to + the scalar outside cost. The guard cost depends on whether + the guard is generated at versioning or at prolog generation + or at epilog generation. Change cost model equation to include + scalar outside cost. + (conservative_cost_threshold): New. Return the less conservative + profitability threshold between the cost model threshold and the + user defined vectorization threshold. + (vect_do_peeling_for_loop_bound): Call conservative_cost_threshold. + (vect_do_peeling_for_alignment): Same. + (vect_loop_versioning): Same. + (vect_create_cond_for_align_checks): ANDs the cost model condition + with the alignment condition. + (vect_transform_loop): Call loop versioning only when there is a + misalignment or an aliasing problem. + 2007-12-06 Jakub Jelinek <jakub@redhat.com> PR middle-end/20983 |
