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| author | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-08-30 11:11:23 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-08-30 11:11:23 +0000 |
| commit | 64ab8765d7e45ed19d4a571b2aaba0abf7f834c3 (patch) | |
| tree | b05715fb0b8144f639b5f3e330714a2b5031ac3d | |
| parent | 673bf5a6b65e51d177d2cf9fc4002171b1f467ab (diff) | |
| download | gcc-64ab8765d7e45ed19d4a571b2aaba0abf7f834c3.zip gcc-64ab8765d7e45ed19d4a571b2aaba0abf7f834c3.tar.gz gcc-64ab8765d7e45ed19d4a571b2aaba0abf7f834c3.tar.bz2 | |
[24/77] Replace a != BLKmode check with is_a <scalar_int_mode>
This patch replaces a check against BLKmode with a check
of is_a <scalar_int_mode>, in a case where scalar integer
modes were the only useful alternatives left.
gcc/
2017-08-30 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
* gimple-fold.c (gimple_fold_builtin_memory_op): Use
is_a <scalar_int_mode> instead of != BLKmode.
From-SVN: r251476
| -rw-r--r-- | gcc/gimple-fold.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/gcc/gimple-fold.c b/gcc/gimple-fold.c index bf39f28..5886b3d 100644 --- a/gcc/gimple-fold.c +++ b/gcc/gimple-fold.c @@ -748,31 +748,29 @@ gimple_fold_builtin_memory_op (gimple_stmt_iterator *gsi, unsigned ilen = tree_to_uhwi (len); if (pow2p_hwi (ilen)) { + scalar_int_mode mode; tree type = lang_hooks.types.type_for_size (ilen * 8, 1); if (type - && TYPE_MODE (type) != BLKmode - && (GET_MODE_SIZE (TYPE_MODE (type)) * BITS_PER_UNIT - == ilen * 8) + && is_a <scalar_int_mode> (TYPE_MODE (type), &mode) + && GET_MODE_SIZE (mode) * BITS_PER_UNIT == ilen * 8 /* If the destination pointer is not aligned we must be able to emit an unaligned store. */ - && (dest_align >= GET_MODE_ALIGNMENT (TYPE_MODE (type)) - || !SLOW_UNALIGNED_ACCESS (TYPE_MODE (type), dest_align) - || (optab_handler (movmisalign_optab, TYPE_MODE (type)) + && (dest_align >= GET_MODE_ALIGNMENT (mode) + || !SLOW_UNALIGNED_ACCESS (mode, dest_align) + || (optab_handler (movmisalign_optab, mode) != CODE_FOR_nothing))) { tree srctype = type; tree desttype = type; - if (src_align < GET_MODE_ALIGNMENT (TYPE_MODE (type))) + if (src_align < GET_MODE_ALIGNMENT (mode)) srctype = build_aligned_type (type, src_align); tree srcmem = fold_build2 (MEM_REF, srctype, src, off0); tree tem = fold_const_aggregate_ref (srcmem); if (tem) srcmem = tem; - else if (src_align < GET_MODE_ALIGNMENT (TYPE_MODE (type)) - && SLOW_UNALIGNED_ACCESS (TYPE_MODE (type), - src_align) - && (optab_handler (movmisalign_optab, - TYPE_MODE (type)) + else if (src_align < GET_MODE_ALIGNMENT (mode) + && SLOW_UNALIGNED_ACCESS (mode, src_align) + && (optab_handler (movmisalign_optab, mode) == CODE_FOR_nothing)) srcmem = NULL_TREE; if (srcmem) @@ -788,7 +786,7 @@ gimple_fold_builtin_memory_op (gimple_stmt_iterator *gsi, gimple_set_vuse (new_stmt, gimple_vuse (stmt)); gsi_insert_before (gsi, new_stmt, GSI_SAME_STMT); } - if (dest_align < GET_MODE_ALIGNMENT (TYPE_MODE (type))) + if (dest_align < GET_MODE_ALIGNMENT (mode)) desttype = build_aligned_type (type, dest_align); new_stmt = gimple_build_assign (fold_build2 (MEM_REF, desttype, |