git
/
gcc
mirror of git://gcc.gnu.org/git/gcc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

re PR rtl-optimization/49235 (ICE: in int_mode_for_mode, at stor-layout.c:424 with -O -fno-delete-null-pointer-checks -fno-tree-scev-cprop -ftree-vectorize -fno-vect-cost-model) 

PR rtl-optimization/49235
	* tree-ssa-address.c (gen_addr_rtx): Ignore base if it is const0_rtx.
	(create_mem_ref_raw): Create MEM_REF even if base is INTEGER_CST.

	* gcc.dg/pr49235.c: New test.

From-SVN: r174478
This commit is contained in:
Jakub Jelinek 2011-05-31 14:34:42 +02:00 committed by Jakub Jelinek
parent 8f7de592d3
commit 35979cc235
4 changed files with 39 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2011-05-31 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/49235
* tree-ssa-address.c (gen_addr_rtx): Ignore base if it is const0_rtx.
(create_mem_ref_raw): Create MEM_REF even if base is INTEGER_CST.
2011-05-31 Ira Rosen <ira.rosen@linaro.org> 2011-05-31 Ira Rosen <ira.rosen@linaro.org>
PR tree-optimization/49093 PR tree-optimization/49093

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2011-05-31 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/49235
* gcc.dg/pr49235.c: New test.
2011-05-31 Ira Rosen <ira.rosen@linaro.org> 2011-05-31 Ira Rosen <ira.rosen@linaro.org>
PR tree-optimization/49093 PR tree-optimization/49093

25
gcc/testsuite/gcc.dg/pr49235.c Normal file
View File

@ -0,0 +1,25 @@
/* PR rtl-optimization/49235 */
/* { dg-do compile { target { int32plus } } } */
/* { dg-options "-O -fno-delete-null-pointer-checks -fno-tree-scev-cprop -ftree-vectorize -fno-vect-cost-model -w" } */
void
foo (void)
{
unsigned i;
unsigned *p = 0;
for (i = 0; i < 4; ++i)
*p++ = 0;
for (i = 0; i < 4; ++i)
*p++ = 0;
}
void
bar (void)
{
unsigned i;
unsigned *p = (unsigned *) (__UINTPTR_TYPE__) 0x12340000;
for (i = 0; i < 4; ++i)
*p++ = 0;
for (i = 0; i < 4; ++i)
*p++ = 0;
}

6
gcc/tree-ssa-address.c
View File

@ -1,5 +1,5 @@
/* Memory address lowering and addressing mode selection. /* Memory address lowering and addressing mode selection.
Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010 Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc. Free Software Foundation, Inc.
This file is part of GCC. This file is part of GCC.
@ -129,7 +129,7 @@ gen_addr_rtx (enum machine_mode address_mode,
*addr = act_elem; *addr = act_elem;
} }
if (base) if (base && base != const0_rtx)
{ {
if (*addr) if (*addr)
*addr = simplify_gen_binary (PLUS, address_mode, base, *addr); *addr = simplify_gen_binary (PLUS, address_mode, base, *addr);
@ -365,7 +365,7 @@ create_mem_ref_raw (tree type, tree alias_ptr_type, struct mem_address *addr,
??? As IVOPTs does not follow restrictions to where the base ??? As IVOPTs does not follow restrictions to where the base
pointer may point to create a MEM_REF only if we know that pointer may point to create a MEM_REF only if we know that
base is valid. */ base is valid. */
if (TREE_CODE (base) == ADDR_EXPR if ((TREE_CODE (base) == ADDR_EXPR || TREE_CODE (base) == INTEGER_CST)
&& (!index2 || integer_zerop (index2)) && (!index2 || integer_zerop (index2))
&& (!addr->index || integer_zerop (addr->index))) && (!addr->index || integer_zerop (addr->index)))
return fold_build2 (MEM_REF, type, base, addr->offset); return fold_build2 (MEM_REF, type, base, addr->offset);