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Re: [PATCH] Fix BIT_FIELD_REF type on vectorizable_live_operation created BFR (PR tree-optimization/78675)

From: Jeff Law <law at redhat dot com>
To: Jakub Jelinek <jakub at redhat dot com>, Richard Biener <rguenther at suse dot de>
Cc: gcc-patches at gcc dot gnu dot org
Date: Mon, 5 Dec 2016 11:09:17 -0700
Subject: Re: [PATCH] Fix BIT_FIELD_REF type on vectorizable_live_operation created BFR (PR tree-optimization/78675)
Authentication-results: sourceware.org; auth=none
References: <20161205165244.GN3541@tucnak.redhat.com>

On 12/05/2016 09:52 AM, Jakub Jelinek wrote:

Hi!

For VECTOR_BOOLEAN_TYPE_P vectype the element type can have different
precision from TYPE_SIZE, which is what we use for the bitsize.
The following patch uses then some other integral type of that precision
before it is actually converted to lhs_type (boolean_type_node).

Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?

2016-12-05  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/78675
	* tree-vect-loop.c (vectorizable_live_operation): For
	VECTOR_BOOLEAN_TYPE_P vectype use integral type with bitsize precision
	instead of TREE_TYPE (vectype) for the BIT_FIELD_REF.

	* gcc.target/i386/pr78675-1.c: New test.
	* gcc.target/i386/pr78675-2.c: New test.

OK.
jeff

References:
- [PATCH] Fix BIT_FIELD_REF type on vectorizable_live_operation created BFR (PR tree-optimization/78675)
  - From: Jakub Jelinek

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