rsha Jagasia <harsha.jagasia@amd.com>

            Jan Sjodin <jan.sjodin@amd.com>
        
        * tree-vect-analyze.c (vect_analyze_operations): Change
        comparison of loop iterations with threshold to less than
        or equal to instead of less than. Reduce
        min_scalar_loop_bound by one.
        * tree-vect-transform.c (vect_estimate_min_profitable_iters): 
        Change prologue and epilogue iterations estimate to vf/2,
        when unknown at compile-time. Change versioning guard
        cost to taken_branch_cost. If peeling for alignment is
        unknown at compile-time, change peel guard costs to one
        taken branch and one not-taken branch per peeled loop.
        If peeling for alignment is known but number of scalar loop
        iterations is unknown at compile-time, change peel guard
        costs to one taken branch per peeled loop. Change the cost
        model equation to consider vector iterations as the loop
        iterations less the prologue and epilogue iterations.
        Change outside vector cost check to less than or equal to
        zero instead of equal to zero.
        (vect_do_peeling_for_loop_bound): Reduce
        min_scalar_loop_bound by one.
        * tree-vectorizer.h: Add TARG_COND_TAKEN_BRANCH_COST and
        TARG_COND_NOT_TAKEN_BRANCH_COST.        
        * config/i386/i386.h (processor_costs): Add
        scalar_stmt_cost, scalar_load_cost, scalar_store_cost,
        vec_stmt_cost, vec_to_scalar_cost, scalar_to_vec_cost,
        vec_align_load_cost, vect_unalign_load_cost,
        vec_store_cost, cond_taken_branch_cost,
        cond_not_taken_branch_cost.
        Define macros for x86 costs.
        * config/i386/i386.c:
        (size_cost): Set scalar_stmt_cost, scalar_load_cost,
        scalar_store_cost, vec_stmt_cost, vec_to_scalar_cost,
        scalar_to_vec_cost, vec_align_load_cost, 
        vect_unalign_load_cost, vec_store_cost,
        cond_taken_branch_cost, cond_not_taken_branch_cost to one. 
        (i386_cost, i486_cost, pentium_cost, pentiumpro_cost,
        geode_cost, k6_cost, athlon_cost, pentium4_cost, nocona_cost, 
        core2_cost, generic64_cost, generic32_cost): Set to default
        untuned costs.
        (k8_cost, amdfam10_cost): Costs for vectorization tuned.
        (x86_builtin_vectorization_cost): New.

2007-09-10  Harsha Jagasia <harsha.jagasia@amd.com>

        * gcc.dg/vect/costmodel/i386/costmodel-vect-31.c: 
        Change dg-final to expect 1 non-profitable loop and
        3 profitable loops.
        * gcc.dg/vect/costmodel/x86-64/costmodel-vect-31.c:
        Change dg-final to expect 1 non-profitable loop and
        3 profitable loops.
        * gcc.dg/vect/costmodel/x86-64/costmodel-fast-math-vect-pr29925.c:
        Change dg-final to expect 1 profitable loop.
        * gcc.dg/vect/costmodel/i386/costmodel-fast-math-vect-pr29925.c:
        Change dg-final to expect 1 profitable loop.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@128353 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 8 insertions, 3 deletions

diff --git a/gcc/tree-vectorizer.h b/gcc/tree-vectorizer.h
index 913c524137b..49ee0452378 100644
--- a/gcc/tree-vectorizer.h
+++ b/gcc/tree-vectorizer.h
@@ -469,9 +469,14 @@ typedef struct _stmt_vec_info {
 /* These are some defines for the initial implementation of the vectorizer's
    cost model.  These will later be target specific hooks.  */
 
-/* Cost of conditional branch.  */
-#ifndef TARG_COND_BRANCH_COST
-#define TARG_COND_BRANCH_COST        3
+/* Cost of conditional taken branch.  */
+#ifndef TARG_COND_TAKEN_BRANCH_COST
+#define TARG_COND_TAKEN_BRANCH_COST        3
+#endif
+
+/* Cost of conditional not taken branch.  */
+#ifndef TARG_COND_NOT_TAKEN_BRANCH_COST
+#define TARG_COND_NOT_TAKEN_BRANCH_COST        1
 #endif
 
 /* Cost of any scalar operation, excluding load and store.  */