From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-480271-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 10354 invoked by alias); 13 Mar 2015 10:37:36 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Received: (qmail 10301 invoked by uid 48); 13 Mar 2015 10:37:32 -0000
From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/65409] [4.8/4.9/5 Regression] ICE in store_field
Date: Fri, 13 Mar 2015 10:37:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: middle-end
X-Bugzilla-Version: 4.9.3
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: jakub at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: ebotcazou at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 4.8.5
X-Bugzilla-Flags:
X-Bugzilla-Changed-Fields:
Message-ID: <bug-65409-4-Uw7TyovMtU@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-65409-4@http.gcc.gnu.org/bugzilla/>
References: <bug-65409-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2015-03/txt/msg01415.txt.bz2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65409

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I've so far came up with:
--- gcc/expr.c.jj    2015-01-19 09:31:15.000000000 +0100
+++ gcc/expr.c    2015-03-13 11:30:25.699805379 +0100
@@ -6656,14 +6656,18 @@ store_field (rtx target, HOST_WIDE_INT b
           && (bitpos % BITS_PER_UNIT) == 0
           && (bitsize % BITS_PER_UNIT) == 0)))
     {
-      gcc_assert (MEM_P (target) && MEM_P (temp)
+      gcc_assert (MEM_P (target)
+              && (MEM_P (temp) || GET_CODE (temp) == PARALLEL)
               && (bitpos % BITS_PER_UNIT) == 0);

       target = adjust_address (target, VOIDmode, bitpos / BITS_PER_UNIT);
-      emit_block_move (target, temp,
-               GEN_INT ((bitsize + BITS_PER_UNIT - 1)
-                    / BITS_PER_UNIT),
-               BLOCK_OP_NORMAL);
+      HOST_WIDE_INT bytesize
+        = (bitsize + BITS_PER_UNIT - 1) / BITS_PER_UNIT;
+      if (GET_CODE (temp) == PARALLEL)
+        emit_group_store (target, temp, TREE_TYPE (exp), bytesize);
+      else
+        emit_block_move (target, temp, GEN_INT (bytesize),
+                 BLOCK_OP_NORMAL);

       return const0_rtx;
     }
which seems to DTRT in this case.