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author | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2007-05-29 21:55:47 +0000 |
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committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2007-05-29 21:55:47 +0000 |
commit | 5417e0224b5fef840b1faa50c43dc660579e4f7b (patch) | |
tree | e755e23b8c84859e189788b0f53371eb79533cf9 /gcc/testsuite | |
parent | cd5ecab6a73af62791d39b85db942600ccc37dad (diff) | |
download | gcc-5417e0224b5fef840b1faa50c43dc660579e4f7b.zip gcc-5417e0224b5fef840b1faa50c43dc660579e4f7b.tar.gz gcc-5417e0224b5fef840b1faa50c43dc660579e4f7b.tar.bz2 |
tree-vectorizer.h (DR_MISALIGNMENT): Cast aux to integer.
* tree-vectorizer.h (DR_MISALIGNMENT): Cast aux to integer.
(SET_DR_MISALIGNMENT): New.
* tree-vect-analyze.c (vect_compute_data_ref_alignment,
vect_update_misalignment_for_peel, vect_enhance_data_refs_alignment):
Use SET_DR_MISALIGNMENT.
* tree-predcom.c (split_data_refs_to_components): Cast dr->aux from
pointer.
* tree-data-ref.c (create_data_ref, compute_all_dependences,
find_loop_nest): Export.
* tree-data-ref.h (struct data_reference): Change aux field to pointer.
(create_data_ref, compute_all_dependences, find_loop_nest): Declare.
* tree-ssa-loop-prefetch.c: Include tree-data-ref.h.
(L1_CACHE_SIZE_BYTES, L2_CACHE_SIZE_BYTES, NONTEMPORAL_FRACTION):
New macros.
(struct mem_ref): Add field reuse_distance.
(find_or_create_group, record_ref): Use XNEW instead of xcalloc.
Initialize reuse_distance field.
(issue_prefetch_ref): Select temporality of prefetch according to
reuse_distance.
(volume_of_references, volume_of_dist_vector, add_subscript_strides,
self_reuse_distance, determine_loop_nest_reuse): New functions.
(loop_prefetch_arrays): Call determine_loop_nest_reuse.
(tree_ssa_prefetch_arrays): Dump L2 cache size.
* Makefile.in (tree-ssa-loop-prefetch.o): Add TREE_DATA_REF_H
dependency.
* gcc.dg/tree-ssa/prefetch-6.c: New test.
From-SVN: r125172
Diffstat (limited to 'gcc/testsuite')
-rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
-rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/prefetch-6.c | 54 |
2 files changed, 58 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 696a478..6340ca4 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2007-05-29 Zdenek Dvorak <dvorakz@suse.cz> + + * gcc.dg/tree-ssa/prefetch-6.c: New test. + 2007-05-29 Tobias Schlüter <tobi@gcc.gnu.org> * gfortran.dg/sizeof.f90: New. diff --git a/gcc/testsuite/gcc.dg/tree-ssa/prefetch-6.c b/gcc/testsuite/gcc.dg/tree-ssa/prefetch-6.c new file mode 100644 index 0000000..44f65bf --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/prefetch-6.c @@ -0,0 +1,54 @@ +/* { dg-do compile { target i?86-*-* x86_64-*-* } } */ +/* { dg-require-effective-target ilp32 } */ +/* { dg-options "-O2 -fprefetch-loop-arrays -march=athlon -msse2 -mfpmath=sse --param simultaneous-prefetches=100 -fdump-tree-aprefetch-details" } */ + +#define N 1000 +#define K 900 + +double a[N][N]; + +double test(void) +{ + unsigned i, j; + double sum = 0; + + /* Here, we should use non-temporal prefetch instruction. */ + for (i = 0; i < K; i++) + for (j = 0; j < K; j++) + sum += a[i][j]; + + /* Here, we should not use non-temporal prefetch instruction, since the + value of a[i+10][j] is reused in L2 cache. */ + for (i = 0; i < K; i++) + for (j = 0; j < K; j++) + sum += a[i][j] * a[i + 10][j]; + + /* Here, we should use non-temporal prefetch instruction, since the + value of a[i+100][j] is too far to be reused in L2 cache. */ + for (i = 0; i < K; i++) + for (j = 0; j < K; j++) + sum += a[i][j] * a[i + 100][j]; + + /* Here, temporal prefetches should be used, since the volume of the + memory accesses is smaller than L2 cache. */ + for (i = 0; i < 100; i++) + for (j = 0; j < 100; j++) + sum += a[i][j] * a[i + 100][j]; + + /* Temporal prefetches should be used here (even though the accesses to + a[j][i] are independent, the same cache line is almost always hit + every N iterations). */ + for (i = 0; i < N; i++) + for (j = 0; j < N; j++) + sum += a[j][i]; + + return sum; +} + +/* { dg-final { scan-tree-dump-times "Issued prefetch" 5 "aprefetch" } } */ +/* { dg-final { scan-tree-dump-times "Issued nontemporal prefetch" 3 "aprefetch" } } */ + +/* { dg-final { scan-assembler-times "prefetcht" 5 } } */ +/* { dg-final { scan-assembler-times "prefetchnta" 3 } } */ + +/* { dg-final { cleanup-tree-dump "aprefetch" } } */ |