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| author | Richard Guenther <rguenther@suse.de> | 2016-05-20 09:17:16 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2016-05-20 09:17:16 +0000 |
| commit | 483c642948802336899b14fa57b2e76c760c3c36 (patch) | |
| tree | e061dbe5dac8633c8babd3bf14639f9e128c156e /gcc/expr.c | |
| parent | eb066284cb8cdf7f46f455c3e975cf1b349a0487 (diff) | |
| download | gcc-483c642948802336899b14fa57b2e76c760c3c36.zip gcc-483c642948802336899b14fa57b2e76c760c3c36.tar.gz gcc-483c642948802336899b14fa57b2e76c760c3c36.tar.bz2 | |
re PR target/29756 (SSE intrinsics hard to use without redundant temporaries appearing)
2016-05-20 Richard Guenther <rguenther@suse.de>
PR tree-optimization/29756
* tree.def (BIT_INSERT_EXPR): New tcc_expression tree code.
* expr.c (expand_expr_real_2): Handle BIT_INSERT_EXPR.
* fold-const.c (operand_equal_p): Likewise.
(fold_ternary_loc): Add constant folding of BIT_INSERT_EXPR.
* gimplify.c (gimplify_expr): Handle BIT_INSERT_EXPR.
* tree-inline.c (estimate_operator_cost): Likewise.
* tree-pretty-print.c (dump_generic_node): Likewise.
* tree-ssa-operands.c (get_expr_operands): Likewise.
* cfgexpand.c (expand_debug_expr): Likewise.
* gimple-pretty-print.c (dump_ternary_rhs): Likewise.
* gimple.c (get_gimple_rhs_num_ops): Handle BIT_INSERT_EXPR.
* tree-cfg.c (verify_gimple_assign_ternary): Verify BIT_INSERT_EXPR.
* tree-ssa.c (non_rewritable_lvalue_p): We can rewrite
vector inserts using BIT_FIELD_REF or MEM_REF on the lhs.
(execute_update_addresses_taken): Do it.
* gcc.dg/tree-ssa/vector-6.c: New testcase.
From-SVN: r236501
Diffstat (limited to 'gcc/expr.c')
| -rw-r--r-- | gcc/expr.c | 17 |
1 files changed, 17 insertions, 0 deletions
@@ -9225,6 +9225,23 @@ expand_expr_real_2 (sepops ops, rtx target, machine_mode tmode, target = expand_vec_cond_expr (type, treeop0, treeop1, treeop2, target); return target; + case BIT_INSERT_EXPR: + { + unsigned bitpos = tree_to_uhwi (treeop2); + unsigned bitsize; + if (INTEGRAL_TYPE_P (TREE_TYPE (treeop1))) + bitsize = TYPE_PRECISION (TREE_TYPE (treeop1)); + else + bitsize = tree_to_uhwi (TYPE_SIZE (TREE_TYPE (treeop1))); + rtx op0 = expand_normal (treeop0); + rtx op1 = expand_normal (treeop1); + rtx dst = gen_reg_rtx (mode); + emit_move_insn (dst, op0); + store_bit_field (dst, bitsize, bitpos, 0, 0, + TYPE_MODE (TREE_TYPE (treeop1)), op1, false); + return dst; + } + default: gcc_unreachable (); } |