From 64ab8765d7e45ed19d4a571b2aaba0abf7f834c3 Mon Sep 17 00:00:00 2001 From: Richard Sandiford Date: Wed, 30 Aug 2017 11:11:23 +0000 Subject: [PATCH] [24/77] Replace a != BLKmode check with is_a This patch replaces a check against BLKmode with a check of is_a , in a case where scalar integer modes were the only useful alternatives left. gcc/ 2017-08-30 Richard Sandiford Alan Hayward David Sherwood * gimple-fold.c (gimple_fold_builtin_memory_op): Use is_a instead of != BLKmode. From-SVN: r251476 --- gcc/gimple-fold.c | 24 +++++++++++------------- 1 file changed, 11 insertions(+), 13 deletions(-) diff --git a/gcc/gimple-fold.c b/gcc/gimple-fold.c index bf39f283ad9..5886b3db91c 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 (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, -- 2.30.2