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Fix corner cases of scm_ramapc
* libguile/array-map.c
- (scm_ramapc): mismatched axes limit unrollk (kroll). Reorganize
the function to do all checking as we go.
- (scm_ra_matchp): unused; remove.
- (find_unrollk): inlined in scm_ramapc; remove.
- (klen): inlined in scm_ramapc; remove.
- (rafill): n is size_t.
- (racp): n is size_t. Use n and not i0end to bound the loop.
- (ramap): Use n and not i0end to bound the loop. This is needed for the rank
0 case to work with the new scm_ramapc, as inc may be set to 0 in that case.
- (rafe): idem.
* test-suite/tests/ramap.test
- check that size mismatch prevents unrolling (matching behavior III) with
both array-copy! and array-map!.
- check that non-contiguous stride in non-ref args prevents unrolling
(rank 2, discontinuous) with both array-copy! and array-map!.
- check rank 0 cases with array-for-each, array-map!.
This commit is contained in:
Daniel Llorens
Andy Wingo
parent
cdd7cc9e9b
commit
2bd96d9ecd
2 changed files with 218 additions and 215 deletions
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@ -70,72 +70,6 @@ ASET (SCM v, size_t pos, SCM val)
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scm_array_handle_release (&h);
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}
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/* Checker for scm_array mapping functions, returns:
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5 --> empty axes;
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4 --> shapes, increments, and bases are the same;
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3 --> shapes and increments are the same;
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2 --> shapes are the same;
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1 --> ras are at least as big as ra0;
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0 --> no match.
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*/
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int
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scm_ra_matchp (SCM ra0, SCM ras)
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{
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int i, exact = 4, empty = 0;
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scm_t_array_handle h0;
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scm_array_get_handle (ra0, &h0);
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for (i = 0; i < h0.ndims; ++i)
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{
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empty = empty || (h0.dims[i].lbnd > h0.dims[i].ubnd);
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}
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while (scm_is_pair (ras))
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{
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scm_t_array_handle h1;
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scm_array_get_handle (SCM_CAR (ras), &h1);
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if (h0.ndims != h1.ndims)
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{
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scm_array_handle_release (&h0);
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scm_array_handle_release (&h1);
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return 0;
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}
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if (h0.base != h1.base)
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exact = min(3, exact);
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for (i = 0; i < h0.ndims; ++i)
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{
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empty = empty || (h1.dims[i].lbnd > h1.dims[i].ubnd);
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switch (exact)
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{
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case 4:
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case 3:
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if (h0.dims[i].inc != h1.dims[i].inc)
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exact = 2;
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case 2:
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if (h0.dims[i].lbnd == h1.dims[i].lbnd && h0.dims[i].ubnd == h1.dims[i].ubnd)
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break;
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exact = 1;
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default:
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if (h0.dims[i].lbnd < h1.dims[i].lbnd || h0.dims[i].ubnd > h1.dims[i].ubnd)
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{
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scm_array_handle_release (&h0);
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scm_array_handle_release (&h1);
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return 0;
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}
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}
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}
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scm_array_handle_release (&h1);
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ras = SCM_CDR (ras);
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}
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scm_array_handle_release (&h0);
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return empty ? 5 : exact;
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}
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static SCM
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make1array (SCM v, ssize_t inc)
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{
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@ -148,46 +82,11 @@ make1array (SCM v, ssize_t inc)
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return a;
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}
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/* Find down to which rank the array is unrollable. 0 means fully
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unrollable, which all rank-0 and rank-1 arrays are. */
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static int
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find_unrollk (SCM ra, int k)
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{
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if (k <= 0)
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return 0;
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else
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{
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ssize_t inc;
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inc = SCM_I_ARRAY_DIMS (ra)[k].inc;
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do {
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size_t lenk = (SCM_I_ARRAY_DIMS (ra)[k].ubnd
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- SCM_I_ARRAY_DIMS (ra)[k].lbnd + 1);
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inc *= lenk;
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--k;
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} while (k >= 0 && inc == SCM_I_ARRAY_DIMS (ra)[k].inc);
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return k+1;
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}
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}
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/* Length of the unrolled index set. */
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static size_t
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klen (SCM ra, int kbegin, int kend)
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{
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size_t len = 1;
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int k;
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for (k = kbegin; k < kend; ++k)
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len *= (SCM_I_ARRAY_DIMS (ra)[k].ubnd
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- SCM_I_ARRAY_DIMS (ra)[k].lbnd + 1);
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return len;
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}
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/* Linear index of the NOT unrolled index set. */
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/* Linear index of not-unrolled index set. */
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static size_t
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cindk (SCM ra, ssize_t *ve, int kend)
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{
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if (!SCM_I_ARRAYP (ra))
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return 0; /* this is BASE */
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else
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if (SCM_I_ARRAYP (ra))
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{
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int k;
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size_t i = SCM_I_ARRAY_BASE (ra);
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@ -195,6 +94,8 @@ cindk (SCM ra, ssize_t *ve, int kend)
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i += (ve[k] - SCM_I_ARRAY_DIMS (ra)[k].lbnd) * SCM_I_ARRAY_DIMS (ra)[k].inc;
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return i;
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}
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else
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return 0; /* this is BASE */
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}
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/* array mapper: apply cproc to each dimension of the given arrays?.
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@ -205,120 +106,163 @@ cindk (SCM ra, ssize_t *ve, int kend)
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SCM ra0; destination array.
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SCM lra; list of source arrays.
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const char *what; caller, for error reporting. */
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#define LBND(ra, k) SCM_I_ARRAY_DIMS (ra)[k].lbnd
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#define UBND(ra, k) SCM_I_ARRAY_DIMS (ra)[k].ubnd
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int
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scm_ramapc (void *cproc_ptr, SCM data, SCM ra0, SCM lra, const char *what)
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{
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SCM z;
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SCM vra0;
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SCM lvra, *plvra;
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SCM z, vra0, lvra, *plvra;
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ssize_t *vi;
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int k, kmax, unrollk;
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int k, kmax, kroll;
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int (*cproc) () = cproc_ptr;
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size_t unrolled_len;
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int empty = 0;
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switch (scm_ra_matchp (ra0, lra))
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/* Prepare reference argument. */
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if (SCM_I_ARRAYP (ra0))
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{
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default:
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case 0:
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scm_misc_error (what, "array shape mismatch: ~S", scm_list_1 (ra0));
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case 1:
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case 2:
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case 3:
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case 4:
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k = kmax = SCM_I_ARRAY_NDIM (ra0)-1;
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vra0 = make1array (SCM_I_ARRAY_V (ra0), SCM_I_ARRAY_DIMS (ra0)[kmax].inc);
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/* Prepare reference argument */
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if (SCM_I_ARRAYP (ra0))
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/* Find unroll depth */
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if (k > 0)
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{
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kmax = SCM_I_ARRAY_NDIM (ra0)-1;
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vra0 = make1array (SCM_I_ARRAY_V (ra0), SCM_I_ARRAY_DIMS (ra0)[kmax].inc);
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ssize_t inc = SCM_I_ARRAY_DIMS (ra0)[k].inc;
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do {
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inc *= (UBND (ra0, k) - LBND (ra0, k) + 1);
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--k;
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} while (k >= 0 && inc == SCM_I_ARRAY_DIMS (ra0)[k].inc);
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kroll = k+1;
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empty = 0 == inc;
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}
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else
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kroll = 0;
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/* Check emptiness of not-unrolled axes. */
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for (; k>=0 && !empty; --k)
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empty = (0 == (UBND (ra0, k) - LBND (ra0, k) + 1));
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}
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else
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{
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kroll = kmax = 0;
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vra0 = ra0 = make1array (ra0, 1);
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empty = (0 == (UBND (ra0, 0) - LBND (ra0, 0) + 1));
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}
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/* Prepare rest arguments. */
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lvra = SCM_EOL;
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plvra = &lvra;
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for (z = lra; !scm_is_null (z); z = SCM_CDR (z))
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{
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SCM ra1 = SCM_CAR (z);
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SCM vra1;
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if (SCM_I_ARRAYP (ra1))
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{
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if (kmax != SCM_I_ARRAY_NDIM (ra1) - 1)
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scm_misc_error (what, "array shape mismatch: ~S", scm_list_1 (ra0));
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vra1 = make1array (SCM_I_ARRAY_V (ra1), SCM_I_ARRAY_DIMS (ra1)[kmax].inc);
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/* Check unroll depth. */
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k = kmax;
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if (k > kroll)
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{
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ssize_t inc = SCM_I_ARRAY_DIMS (ra1)[k].inc;
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do {
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ssize_t l0 = LBND (ra0, k), u0 = UBND (ra0, k);
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ssize_t l1 = LBND (ra1, k), u1 = UBND (ra1, k);
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--k;
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if (l0 == l1 && u0 == u1)
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inc *= (u1 - l1 + 1);
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else if (l0 >= l1 && u0 <= u1)
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break;
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else
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scm_misc_error (what, "array shape mismatch: ~S", scm_list_1 (ra0));
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} while (k >= kroll && inc == SCM_I_ARRAY_DIMS (ra1)[k].inc);
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kroll = k + 1;
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}
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/* Check matching of not-unrolled axes. */
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for (; k>=0; --k)
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if (LBND (ra0, k) < LBND (ra1, k) || UBND (ra0, k) > UBND (ra1, k))
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scm_misc_error (what, "array shape mismatch: ~S", scm_list_1 (ra0));
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}
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else
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{
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kmax = 0;
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vra0 = ra0 = make1array(ra0, 1);
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if (kmax != 0)
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scm_misc_error (what, "array shape mismatch: ~S", scm_list_1 (ra0));
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vra1 = make1array (ra1, 1);
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if (LBND (ra0, 0) < LBND (vra1, 0) || UBND (ra0, 0) > UBND (vra1, 0))
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scm_misc_error (what, "array shape mismatch: ~S", scm_list_1 (ra0));
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}
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/* Linear addressing for rest arguments */
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lvra = SCM_EOL;
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plvra = &lvra;
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for (z = lra; !scm_is_null (z); z = SCM_CDR (z))
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{
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SCM ra1 = SCM_CAR (z);
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SCM vra1;
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if (SCM_I_ARRAYP (ra1))
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vra1 = make1array (SCM_I_ARRAY_V (ra1), SCM_I_ARRAY_DIMS (ra1)[kmax].inc);
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else
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vra1 = make1array (ra1, 1);
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*plvra = scm_cons (vra1, SCM_EOL);
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plvra = SCM_CDRLOC (*plvra);
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}
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/* Find common unroll depth */
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unrollk = find_unrollk (ra0, kmax);
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for (z = lra; !scm_is_null (z); z = SCM_CDR (z))
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{
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SCM ra1 = SCM_CAR (z);
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unrollk = max(unrollk, find_unrollk (ra1, kmax));
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}
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unrolled_len = klen (ra0, unrollk, kmax+1);
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/* Set inner loop size */
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SCM_I_ARRAY_DIMS (vra0)->lbnd = 0;
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SCM_I_ARRAY_DIMS (vra0)->ubnd = unrolled_len - 1;
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for (z = lvra; !scm_is_null (z); z = SCM_CDR (z))
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{
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SCM_I_ARRAY_DIMS (SCM_CAR (z))->lbnd = 0;
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SCM_I_ARRAY_DIMS (SCM_CAR (z))->ubnd = unrolled_len - 1;
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}
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/* Set starting indices and go */
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vi = scm_gc_malloc_pointerless (sizeof(ssize_t) * unrollk, vi_gc_hint);
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for (k = 0; k < unrollk; ++k)
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vi[k] = SCM_I_ARRAY_DIMS (ra0)[k].lbnd;
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do
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{
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if (k == unrollk)
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{
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SCM y = lra;
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SCM_I_ARRAY_BASE (vra0) = cindk (ra0, vi, unrollk);
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for (z = lvra; !scm_is_null (z); z = SCM_CDR (z), y = SCM_CDR (y))
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SCM_I_ARRAY_BASE (SCM_CAR (z)) = cindk (SCM_CAR (y), vi, unrollk);
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if (SCM_UNBNDP (data))
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cproc (vra0, lvra);
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else
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cproc (vra0, data, lvra);
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k--;
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}
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else if (vi[k] < SCM_I_ARRAY_DIMS (ra0)[k].ubnd)
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{
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vi[k]++;
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k++;
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}
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else
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{
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vi[k] = SCM_I_ARRAY_DIMS (ra0)[k].lbnd - 1;
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k--;
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}
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}
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while (k >= 0);
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return 1;
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*plvra = scm_cons (vra1, SCM_EOL);
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plvra = SCM_CDRLOC (*plvra);
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}
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/* Set unrolled size. */
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if (empty)
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return 1;
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else
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{
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size_t len = 1;
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for (k = kroll; k <= kmax; ++k)
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len *= (UBND (ra0, k) - LBND (ra0, k) + 1);
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UBND (vra0, 0) = len - 1;
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for (z = lvra; !scm_is_null (z); z = SCM_CDR (z))
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UBND (SCM_CAR (z), 0) = len - 1;
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}
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/* Set starting indices and go. */
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vi = scm_gc_malloc_pointerless (sizeof(ssize_t) * kroll, vi_gc_hint);
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for (k = 0; k < kroll; ++k)
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vi[k] = LBND (ra0, k);
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do
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{
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if (k == kroll)
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{
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SCM y = lra;
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SCM_I_ARRAY_BASE (vra0) = cindk (ra0, vi, kroll);
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for (z = lvra; !scm_is_null (z); z = SCM_CDR (z), y = SCM_CDR (y))
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SCM_I_ARRAY_BASE (SCM_CAR (z)) = cindk (SCM_CAR (y), vi, kroll);
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if (SCM_UNBNDP (data))
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cproc (vra0, lvra);
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else
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cproc (vra0, data, lvra);
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k--;
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}
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else if (vi[k] < SCM_I_ARRAY_DIMS (ra0)[k].ubnd)
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{
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vi[k]++;
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k++;
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}
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else
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{
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vi[k] = SCM_I_ARRAY_DIMS (ra0)[k].lbnd - 1;
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k--;
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}
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}
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while (k >= 0);
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return 1;
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}
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#undef UBND
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#undef LBND
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static int
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rafill (SCM dst, SCM fill)
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{
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long n = (SCM_I_ARRAY_DIMS (dst)->ubnd - SCM_I_ARRAY_DIMS (dst)->lbnd + 1);
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scm_t_array_handle h;
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size_t i;
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size_t n, i;
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ssize_t inc;
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scm_array_get_handle (SCM_I_ARRAY_V (dst), &h);
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i = SCM_I_ARRAY_BASE (dst);
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inc = SCM_I_ARRAY_DIMS (dst)->inc;
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n = (SCM_I_ARRAY_DIMS (dst)->ubnd - SCM_I_ARRAY_DIMS (dst)->lbnd + 1);
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dst = SCM_I_ARRAY_V (dst);
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for (; n-- > 0; i += inc)
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h.impl->vset (SCM_I_ARRAY_V (dst), i, fill);
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h.impl->vset (dst, i, fill);
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scm_array_handle_release (&h);
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return 1;
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@ -339,9 +283,8 @@ SCM_DEFINE (scm_array_fill_x, "array-fill!", 2, 0, 0,
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static int
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racp (SCM src, SCM dst)
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{
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ssize_t n = (SCM_I_ARRAY_DIMS (src)->ubnd - SCM_I_ARRAY_DIMS (src)->lbnd + 1);
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scm_t_array_handle h_s, h_d;
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size_t i_s, i_d;
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size_t n, i_s, i_d;
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ssize_t inc_s, inc_d;
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dst = SCM_CAR (dst);
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@ -349,11 +292,14 @@ racp (SCM src, SCM dst)
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i_d = SCM_I_ARRAY_BASE (dst);
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inc_s = SCM_I_ARRAY_DIMS (src)->inc;
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inc_d = SCM_I_ARRAY_DIMS (dst)->inc;
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n = (SCM_I_ARRAY_DIMS (src)->ubnd - SCM_I_ARRAY_DIMS (src)->lbnd + 1);
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src = SCM_I_ARRAY_V (src);
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dst = SCM_I_ARRAY_V (dst);
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scm_array_get_handle (SCM_I_ARRAY_V (src), &h_s);
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scm_array_get_handle (SCM_I_ARRAY_V (dst), &h_d);
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scm_array_get_handle (src, &h_s);
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scm_array_get_handle (dst, &h_d);
|
||||
|
||||
if (scm_is_vector (SCM_I_ARRAY_V (src)) && scm_is_vector (SCM_I_ARRAY_V (dst)))
|
||||
if (scm_is_vector (src) && scm_is_vector (dst))
|
||||
{
|
||||
SCM const * el_s = h_s.elements;
|
||||
SCM * el_d = h_d.writable_elements;
|
||||
|
|
@ -362,7 +308,7 @@ racp (SCM src, SCM dst)
|
|||
}
|
||||
else
|
||||
for (; n-- > 0; i_s += inc_s, i_d += inc_d)
|
||||
h_d.impl->vset (SCM_I_ARRAY_V (dst), i_d, h_s.impl->vref (SCM_I_ARRAY_V (src), i_s));
|
||||
h_d.impl->vset (dst, i_d, h_s.impl->vref (src, i_s));
|
||||
|
||||
scm_array_handle_release (&h_d);
|
||||
scm_array_handle_release (&h_s);
|
||||
|
|
@ -652,19 +598,18 @@ scm_array_identity (SCM dst, SCM src)
|
|||
static int
|
||||
ramap (SCM ra0, SCM proc, SCM ras)
|
||||
{
|
||||
ssize_t i = SCM_I_ARRAY_DIMS (ra0)->lbnd;
|
||||
size_t n = SCM_I_ARRAY_DIMS (ra0)->ubnd - i + 1;
|
||||
|
||||
scm_t_array_handle h0;
|
||||
size_t i0, i0end;
|
||||
ssize_t inc0;
|
||||
size_t n, i0;
|
||||
ssize_t i, inc0;
|
||||
scm_array_get_handle (SCM_I_ARRAY_V (ra0), &h0);
|
||||
i0 = SCM_I_ARRAY_BASE (ra0);
|
||||
inc0 = SCM_I_ARRAY_DIMS (ra0)->inc;
|
||||
i0end = i0 + n*inc0;
|
||||
i = SCM_I_ARRAY_DIMS (ra0)->lbnd;
|
||||
n = SCM_I_ARRAY_DIMS (ra0)->ubnd - i + 1;
|
||||
ra0 = SCM_I_ARRAY_V (ra0);
|
||||
if (scm_is_null (ras))
|
||||
for (; i0 < i0end; i0 += inc0)
|
||||
h0.impl->vset (SCM_I_ARRAY_V (ra0), i0, scm_call_0 (proc));
|
||||
for (; n--; i0 += inc0)
|
||||
h0.impl->vset (ra0, i0, scm_call_0 (proc));
|
||||
else
|
||||
{
|
||||
SCM ra1 = SCM_CAR (ras);
|
||||
|
|
@ -675,19 +620,20 @@ ramap (SCM ra0, SCM proc, SCM ras)
|
|||
i1 = SCM_I_ARRAY_BASE (ra1);
|
||||
inc1 = SCM_I_ARRAY_DIMS (ra1)->inc;
|
||||
ras = SCM_CDR (ras);
|
||||
ra1 = SCM_I_ARRAY_V (ra1);
|
||||
if (scm_is_null (ras))
|
||||
for (; i0 < i0end; i0 += inc0, i1 += inc1)
|
||||
h0.impl->vset (SCM_I_ARRAY_V (ra0), i0, scm_call_1 (proc, h1.impl->vref (SCM_I_ARRAY_V (ra1), i1)));
|
||||
for (; n--; i0 += inc0, i1 += inc1)
|
||||
h0.impl->vset (ra0, i0, scm_call_1 (proc, h1.impl->vref (ra1, i1)));
|
||||
else
|
||||
{
|
||||
ras = scm_vector (ras);
|
||||
for (; i0 < i0end; i0 += inc0, i1 += inc1, ++i)
|
||||
for (; n--; i0 += inc0, i1 += inc1, ++i)
|
||||
{
|
||||
SCM args = SCM_EOL;
|
||||
unsigned long k;
|
||||
for (k = scm_c_vector_length (ras); k--;)
|
||||
args = scm_cons (AREF (scm_c_vector_ref (ras, k), i), args);
|
||||
h0.impl->vset (SCM_I_ARRAY_V (ra0), i0, scm_apply_1 (proc, h1.impl->vref (SCM_I_ARRAY_V (ra1), i1), args));
|
||||
h0.impl->vset (ra0, i0, scm_apply_1 (proc, h1.impl->vref (ra1, i1), args));
|
||||
}
|
||||
}
|
||||
scm_array_handle_release (&h1);
|
||||
|
|
@ -729,19 +675,18 @@ rafe (SCM ra0, SCM proc, SCM ras)
|
|||
size_t n = SCM_I_ARRAY_DIMS (ra0)->ubnd - i + 1;
|
||||
|
||||
scm_t_array_handle h0;
|
||||
size_t i0, i0end;
|
||||
size_t i0;
|
||||
ssize_t inc0;
|
||||
scm_array_get_handle (SCM_I_ARRAY_V (ra0), &h0);
|
||||
i0 = SCM_I_ARRAY_BASE (ra0);
|
||||
inc0 = SCM_I_ARRAY_DIMS (ra0)->inc;
|
||||
i0end = i0 + n*inc0;
|
||||
if (scm_is_null (ras))
|
||||
for (; i0 < i0end; i0 += inc0)
|
||||
for (; n--; i0 += inc0)
|
||||
scm_call_1 (proc, h0.impl->vref (SCM_I_ARRAY_V (ra0), i0));
|
||||
else
|
||||
{
|
||||
ras = scm_vector (ras);
|
||||
for (; i0 < i0end; i0 += inc0, ++i)
|
||||
for (; n--; i0 += inc0, ++i)
|
||||
{
|
||||
SCM args = SCM_EOL;
|
||||
unsigned long k;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue