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Fix type of bitstart in vectorizable_live_operation
- From: Richard Sandiford <richard dot sandiford at linaro dot org>
- To: gcc-patches at gcc dot gnu dot org
- Date: Fri, 15 Sep 2017 11:45:52 +0100
- Subject: Fix type of bitstart in vectorizable_live_operation
- Authentication-results: sourceware.org; auth=none
This patch changes the type of the multiplier applied by
vectorizable_live_operation from unsigned_type_node to bitsizetype,
which matches the type of TYPE_SIZE and is the type expected of a
BIT_FIELD_REF bit position. This is shown by existing tests when
SVE is added.
Tested on aarch64-linux-gnu, x86_64-linux-gnu and powerpc64le-linux-gnu.
OK to install?
Richard
2017-09-15 Richard Sandiford <richard.sandiford@linaro.org>
Alan Hayward <alan.hayward@arm.com>
David Sherwood <david.sherwood@arm.com>
gcc/
* tree-vect-loop.c (vectorizable_live_operation): Fix type of
bitstart.
Index: gcc/tree-vect-loop.c
===================================================================
--- gcc/tree-vect-loop.c 2017-09-15 11:37:45.639244036 +0100
+++ gcc/tree-vect-loop.c 2017-09-15 11:38:33.276424843 +0100
@@ -7090,7 +7090,7 @@ vectorizable_live_operation (gimple *stm
vec_lhs = gimple_get_lhs (SLP_TREE_VEC_STMTS (slp_node)[vec_entry]);
/* Get entry to use. */
- bitstart = build_int_cst (unsigned_type_node, vec_index);
+ bitstart = bitsize_int (vec_index);
bitstart = int_const_binop (MULT_EXPR, bitsize, bitstart);
}
else