[poky] [PATCH 01/10] gcc-4.6.0: Apply linaro patches
Nitin A Kamble
nitin.a.kamble at intel.com
Thu May 5 20:36:33 PDT 2011
From: Khem Raj <raj.khem at gmail.com>
We take the improvements done by linaro for gcc 4.6
Signed-off-by: Khem Raj <raj.khem at gmail.com>
---
meta/recipes-devtools/gcc/gcc-4.6.0.inc | 4 +
.../gcc-4.6.0/linaro/gcc-4.6-linaro-r106720.patch | 51 ++
.../gcc-4.6.0/linaro/gcc-4.6-linaro-r106723.patch | 63 ++
.../gcc-4.6.0/linaro/gcc-4.6-linaro-r106729.patch | 32 +
.../gcc-4.6.0/linaro/gcc-4.6-linaro-r106731.patch | 28 +
.../gcc-4.6.0/linaro/gcc-4.6-linaro-r106733.patch | 653 ++++++++++++++++++++
.../gcc-4.6.0/linaro/gcc-4.6-linaro-r106737.patch | 126 ++++
.../gcc-4.6.0/linaro/gcc-4.6-linaro-r106738.patch | 177 ++++++
.../gcc/gcc-4_6-branch-linaro-backports.inc | 9 +
9 files changed, 1143 insertions(+), 0 deletions(-)
create mode 100644 meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106720.patch
create mode 100644 meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106723.patch
create mode 100644 meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106729.patch
create mode 100644 meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106731.patch
create mode 100644 meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106733.patch
create mode 100644 meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106737.patch
create mode 100644 meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106738.patch
create mode 100644 meta/recipes-devtools/gcc/gcc-4_6-branch-linaro-backports.inc
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0.inc b/meta/recipes-devtools/gcc/gcc-4.6.0.inc
index 2c30d43..609b1df 100644
--- a/meta/recipes-devtools/gcc/gcc-4.6.0.inc
+++ b/meta/recipes-devtools/gcc/gcc-4.6.0.inc
@@ -7,6 +7,9 @@ require gcc-common.inc
require gcc-4_6-branch-backports.inc
+# Linaro patches for 4.6 branch
+require gcc-4_6-branch-linaro-backports.inc
+
PR = "r1"
DEPENDS =+ "mpfr gmp libmpc"
@@ -22,6 +25,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=59530bdf33659b29e73d4adb9f9f6552 \
SRC_URI = "${GNU_MIRROR}/gcc/gcc-${PV}/gcc-${PV}.tar.bz2 \
${GCC-4_6-BRANCH-BACKPORTS} \
+ ${GCC-4_6-BRANCH-LINARO-BACKPORTS} \
file://gcc-4.3.1-ARCH_FLAGS_FOR_TARGET.patch \
file://100-uclibc-conf.patch \
file://gcc-uclibc-locale-ctype_touplow_t.patch \
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106720.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106720.patch
new file mode 100644
index 0000000..4c573f4
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106720.patch
@@ -0,0 +1,51 @@
+2011-02-21 Andrew Stubbs <ams at codesourcery.com>
+ Julian Brown <julian at codesourcery.com>
+ Mark Shinwell <shinwell at codesourcery.com>
+
+ Forward-ported from Linaro GCC 4.5 (bzr99324).
+
+ gcc/
+ * config/arm/arm.h (arm_class_likely_spilled_p): Check against
+ LO_REGS only for Thumb-1.
+ (MODE_BASE_REG_CLASS): Restrict base registers to those which can
+ be used in short instructions when optimising for size on Thumb-2.
+
+=== modified file 'gcc/config/arm/arm.c'
+--- old/gcc/config/arm/arm.c 2011-01-29 03:20:57 +0000
++++ new/gcc/config/arm/arm.c 2011-02-21 14:04:51 +0000
+@@ -22304,14 +22304,16 @@
+
+ /* Implement TARGET_CLASS_LIKELY_SPILLED_P.
+
+- We need to define this for LO_REGS on thumb. Otherwise we can end up
+- using r0-r4 for function arguments, r7 for the stack frame and don't
+- have enough left over to do doubleword arithmetic. */
+-
++ We need to define this for LO_REGS on Thumb-1. Otherwise we can end up
++ using r0-r4 for function arguments, r7 for the stack frame and don't have
++ enough left over to do doubleword arithmetic. For Thumb-2 all the
++ potentially problematic instructions accept high registers so this is not
++ necessary. Care needs to be taken to avoid adding new Thumb-2 patterns
++ that require many low registers. */
+ static bool
+ arm_class_likely_spilled_p (reg_class_t rclass)
+ {
+- if ((TARGET_THUMB && rclass == LO_REGS)
++ if ((TARGET_THUMB1 && rclass == LO_REGS)
+ || rclass == CC_REG)
+ return true;
+
+
+=== modified file 'gcc/config/arm/arm.h'
+--- old/gcc/config/arm/arm.h 2011-01-29 03:20:57 +0000
++++ new/gcc/config/arm/arm.h 2011-02-21 14:04:51 +0000
+@@ -1185,7 +1185,7 @@
+ when addressing quantities in QI or HI mode; if we don't know the
+ mode, then we must be conservative. */
+ #define MODE_BASE_REG_CLASS(MODE) \
+- (TARGET_32BIT ? CORE_REGS : \
++ (TARGET_ARM || (TARGET_THUMB2 && !optimize_size) ? CORE_REGS : \
+ (((MODE) == SImode) ? BASE_REGS : LO_REGS))
+
+ /* For Thumb we can not support SP+reg addressing, so we return LO_REGS
+
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106723.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106723.patch
new file mode 100644
index 0000000..5271ffa
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106723.patch
@@ -0,0 +1,63 @@
+2011-02-02 Richard Sandiford <richard.sandiford at linaro.org>
+
+ gcc/
+ PR target/47551
+ * config/arm/arm.c (coproc_secondary_reload_class): Handle
+ structure modes. Don't check neon_vector_mem_operand for
+ vector or structure modes.
+
+ gcc/testsuite/
+ PR target/47551
+ * gcc.target/arm/neon-modes-2.c: New test.
+
+=== modified file 'gcc/config/arm/arm.c'
+--- old/gcc/config/arm/arm.c 2011-02-21 14:04:51 +0000
++++ new/gcc/config/arm/arm.c 2011-03-02 11:38:43 +0000
+@@ -9139,11 +9139,14 @@
+ return GENERAL_REGS;
+ }
+
++ /* The neon move patterns handle all legitimate vector and struct
++ addresses. */
+ if (TARGET_NEON
++ && MEM_P (x)
+ && (GET_MODE_CLASS (mode) == MODE_VECTOR_INT
+- || GET_MODE_CLASS (mode) == MODE_VECTOR_FLOAT)
+- && neon_vector_mem_operand (x, 0))
+- return NO_REGS;
++ || GET_MODE_CLASS (mode) == MODE_VECTOR_FLOAT
++ || VALID_NEON_STRUCT_MODE (mode)))
++ return NO_REGS;
+
+ if (arm_coproc_mem_operand (x, wb) || s_register_operand (x, mode))
+ return NO_REGS;
+
+=== added file 'gcc/testsuite/gcc.target/arm/neon-modes-2.c'
+--- old/gcc/testsuite/gcc.target/arm/neon-modes-2.c 1970-01-01 00:00:00 +0000
++++ new/gcc/testsuite/gcc.target/arm/neon-modes-2.c 2011-02-02 10:02:45 +0000
+@@ -0,0 +1,24 @@
++/* { dg-do compile } */
++/* { dg-require-effective-target arm_neon_ok } */
++/* { dg-options "-O1" } */
++/* { dg-add-options arm_neon } */
++
++#include "arm_neon.h"
++
++#define SETUP(A) x##A = vld3_u32 (ptr + A * 0x20)
++#define MODIFY(A) x##A = vld3_lane_u32 (ptr + A * 0x20 + 0x10, x##A, 1)
++#define STORE(A) vst3_u32 (ptr + A * 0x20, x##A)
++
++#define MANY(A) A (0), A (1), A (2), A (3), A (4), A (5)
++
++void
++bar (uint32_t *ptr, int y)
++{
++ uint32x2x3_t MANY (SETUP);
++ int *x = __builtin_alloca (y);
++ int z[0x1000];
++ foo (x, z);
++ MANY (MODIFY);
++ foo (x, z);
++ MANY (STORE);
++}
+
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106729.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106729.patch
new file mode 100644
index 0000000..465d09c
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106729.patch
@@ -0,0 +1,32 @@
+2011-03-22 Andrew Stubbs <ams at codesourcery.com>
+
+ Backport from FSF:
+
+ 2011-03-21 Daniel Jacobowitz <dan at codesourcery.com>
+
+ gcc/
+ * config/arm/unwind-arm.c (__gnu_unwind_pr_common): Correct test
+ for barrier handlers.
+
+=== modified file 'gcc/config/arm/unwind-arm.c'
+--- old/gcc/config/arm/unwind-arm.c 2009-10-30 14:55:10 +0000
++++ new/gcc/config/arm/unwind-arm.c 2011-03-22 10:59:10 +0000
+@@ -1196,8 +1196,6 @@
+ ucbp->barrier_cache.bitpattern[4] = (_uw) &data[1];
+
+ if (data[0] & uint32_highbit)
+- phase2_call_unexpected_after_unwind = 1;
+- else
+ {
+ data += rtti_count + 1;
+ /* Setup for entry to the handler. */
+@@ -1207,6 +1205,8 @@
+ _Unwind_SetGR (context, 0, (_uw) ucbp);
+ return _URC_INSTALL_CONTEXT;
+ }
++ else
++ phase2_call_unexpected_after_unwind = 1;
+ }
+ if (data[0] & uint32_highbit)
+ data++;
+
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106731.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106731.patch
new file mode 100644
index 0000000..9b684aa
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106731.patch
@@ -0,0 +1,28 @@
+2011-03-23 Andrew Stubbs <ams at codesourcery.com>
+
+ Backport from FSF:
+
+ 2011-03-23 Julian Brown <julian at codesourcery.com>
+
+ gcc/
+ * expr.c (expand_expr_real_1): Only use BLKmode for volatile
+ accesses which are not naturally aligned.
+
+=== modified file 'gcc/expr.c'
+--- old/gcc/expr.c 2011-03-18 09:04:31 +0000
++++ new/gcc/expr.c 2011-04-05 16:18:11 +0000
+@@ -9147,8 +9147,11 @@
+ && modifier != EXPAND_CONST_ADDRESS
+ && modifier != EXPAND_INITIALIZER)
+ /* If the field is volatile, we always want an aligned
+- access. */
+- || (volatilep && flag_strict_volatile_bitfields > 0)
++ access. Only do this if the access is not already naturally
++ aligned, otherwise "normal" (non-bitfield) volatile fields
++ become non-addressable. */
++ || (volatilep && flag_strict_volatile_bitfields > 0
++ && (bitpos % GET_MODE_ALIGNMENT (mode) != 0))
+ /* If the field isn't aligned enough to fetch as a memref,
+ fetch it as a bit field. */
+ || (mode1 != BLKmode
+
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106733.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106733.patch
new file mode 100644
index 0000000..4b0079e
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106733.patch
@@ -0,0 +1,653 @@
+2011-03-27 Ira Rosen <ira.rosen at linaro.org>
+
+ gcc/
+ * doc/invoke.texi (max-stores-to-sink): Document.
+ * params.h (MAX_STORES_TO_SINK): Define.
+ * opts.c (finish_options): Set MAX_STORES_TO_SINK to 0
+ if either vectorization or if-conversion is disabled.
+ * tree-data-ref.c (dr_equal_offsets_p1): Moved and renamed from
+ tree-vect-data-refs.c vect_equal_offsets.
+ (dr_equal_offsets_p): New function.
+ (find_data_references_in_bb): Remove static.
+ * tree-data-ref.h (find_data_references_in_bb): Declare.
+ (dr_equal_offsets_p): Likewise.
+ * tree-vect-data-refs.c (vect_equal_offsets): Move to tree-data-ref.c.
+ (vect_drs_dependent_in_basic_block): Update calls to
+ vect_equal_offsets.
+ (vect_check_interleaving): Likewise.
+ * tree-ssa-phiopt.c: Include cfgloop.h and tree-data-ref.h.
+ (cond_if_else_store_replacement): Rename to...
+ (cond_if_else_store_replacement_1): ... this. Change arguments and
+ documentation.
+ (cond_if_else_store_replacement): New function.
+ * Makefile.in (tree-ssa-phiopt.o): Adjust dependencies.
+ * params.def (PARAM_MAX_STORES_TO_SINK): Define.
+
+ gcc/testsuite/
+ * gcc.dg/vect/vect-cselim-1.c: New test.
+ * gcc.dg/vect/vect-cselim-2.c: New test.
+
+=== modified file 'gcc/Makefile.in'
+--- old/gcc/Makefile.in 2011-03-26 09:20:34 +0000
++++ new/gcc/Makefile.in 2011-04-18 11:31:29 +0000
+@@ -2422,7 +2422,8 @@
+ tree-ssa-phiopt.o : tree-ssa-phiopt.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
+ $(TM_H) $(GGC_H) $(TREE_H) $(TM_P_H) $(BASIC_BLOCK_H) \
+ $(TREE_FLOW_H) $(TREE_PASS_H) $(TREE_DUMP_H) langhooks.h $(FLAGS_H) \
+- $(DIAGNOSTIC_H) $(TIMEVAR_H) pointer-set.h domwalk.h
++ $(DIAGNOSTIC_H) $(TIMEVAR_H) pointer-set.h domwalk.h $(CFGLOOP_H) \
++ $(TREE_DATA_REF_H)
+ tree-nrv.o : tree-nrv.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
+ $(TM_H) $(TREE_H) $(FUNCTION_H) $(BASIC_BLOCK_H) $(FLAGS_H) \
+ $(DIAGNOSTIC_H) $(TREE_FLOW_H) $(TIMEVAR_H) $(TREE_DUMP_H) $(TREE_PASS_H) \
+
+=== modified file 'gcc/doc/invoke.texi'
+--- old/gcc/doc/invoke.texi 2011-03-29 14:24:42 +0000
++++ new/gcc/doc/invoke.texi 2011-04-18 11:31:29 +0000
+@@ -8909,6 +8909,11 @@
+ The maximum number of namespaces to consult for suggestions when C++
+ name lookup fails for an identifier. The default is 1000.
+
++ at item max-stores-to-sink
++The maximum number of conditional stores paires that can be sunk. Set to 0
++if either vectorization (@option{-ftree-vectorize}) or if-conversion
++(@option{-ftree-loop-if-convert}) is disabled. The default is 2.
++
+ @end table
+ @end table
+
+
+=== modified file 'gcc/opts.c'
+--- old/gcc/opts.c 2011-02-17 22:51:57 +0000
++++ new/gcc/opts.c 2011-03-27 09:38:18 +0000
+@@ -823,6 +823,12 @@
+ opts->x_flag_split_stack = 0;
+ }
+ }
++
++ /* Set PARAM_MAX_STORES_TO_SINK to 0 if either vectorization or if-conversion
++ is disabled. */
++ if (!opts->x_flag_tree_vectorize || !opts->x_flag_tree_loop_if_convert)
++ maybe_set_param_value (PARAM_MAX_STORES_TO_SINK, 0,
++ opts->x_param_values, opts_set->x_param_values);
+ }
+
+ #define LEFT_COLUMN 27
+
+=== modified file 'gcc/params.def'
+--- old/gcc/params.def 2011-03-26 09:20:34 +0000
++++ new/gcc/params.def 2011-04-18 11:31:29 +0000
+@@ -883,6 +883,13 @@
+ "name lookup fails",
+ 1000, 0, 0)
+
++/* Maximum number of conditional store pairs that can be sunk. */
++DEFPARAM (PARAM_MAX_STORES_TO_SINK,
++ "max-stores-to-sink",
++ "Maximum number of conditional store pairs that can be sunk",
++ 2, 0, 0)
++
++
+ /*
+ Local variables:
+ mode:c
+
+=== modified file 'gcc/params.h'
+--- old/gcc/params.h 2011-01-13 13:41:03 +0000
++++ new/gcc/params.h 2011-03-27 09:38:18 +0000
+@@ -206,4 +206,6 @@
+ PARAM_VALUE (PARAM_PREFETCH_MIN_INSN_TO_MEM_RATIO)
+ #define MIN_NONDEBUG_INSN_UID \
+ PARAM_VALUE (PARAM_MIN_NONDEBUG_INSN_UID)
++#define MAX_STORES_TO_SINK \
++ PARAM_VALUE (PARAM_MAX_STORES_TO_SINK)
+ #endif /* ! GCC_PARAMS_H */
+
+=== added file 'gcc/testsuite/gcc.dg/vect/vect-cselim-1.c'
+--- old/gcc/testsuite/gcc.dg/vect/vect-cselim-1.c 1970-01-01 00:00:00 +0000
++++ new/gcc/testsuite/gcc.dg/vect/vect-cselim-1.c 2011-03-27 09:38:18 +0000
+@@ -0,0 +1,86 @@
++/* { dg-require-effective-target vect_int } */
++
++#include <stdarg.h>
++#include "tree-vect.h"
++
++#define N 50
++
++typedef struct {
++ short a;
++ short b;
++} data;
++
++data in1[N], in2[N], out[N];
++short result[N*2] = {7,-7,9,-6,11,-5,13,-4,15,-3,17,-2,19,-1,21,0,23,1,25,2,27,3,29,4,31,5,33,6,35,7,37,8,39,9,41,10,43,11,45,12,47,13,49,14,51,15,53,16,55,17,57,18,59,19,61,20,63,21,65,22,67,23,69,24,71,25,73,26,75,27,77,28,79,29,81,30,83,31,85,32,87,33,89,34,91,35,93,36,95,37,97,38,99,39,101,40,103,41,105,42};
++short out1[N], out2[N];
++
++__attribute__ ((noinline)) void
++foo ()
++{
++ int i;
++ short c, d;
++
++ /* Vectorizable with conditional store sinking. */
++ for (i = 0; i < N; i++)
++ {
++ c = in1[i].b;
++ d = in2[i].b;
++
++ if (c >= d)
++ {
++ out[i].b = c;
++ out[i].a = d + 5;
++ }
++ else
++ {
++ out[i].b = d - 12;
++ out[i].a = c + d;
++ }
++ }
++
++ /* Not vectorizable. */
++ for (i = 0; i < N; i++)
++ {
++ c = in1[i].b;
++ d = in2[i].b;
++
++ if (c >= d)
++ {
++ out1[i] = c;
++ }
++ else
++ {
++ out2[i] = c + d;
++ }
++ }
++}
++
++int
++main (void)
++{
++ int i;
++
++ check_vect ();
++
++ for (i = 0; i < N; i++)
++ {
++ in1[i].a = i;
++ in1[i].b = i + 2;
++ in2[i].a = 5;
++ in2[i].b = i + 5;
++ __asm__ volatile ("");
++ }
++
++ foo ();
++
++ for (i = 0; i < N; i++)
++ {
++ if (out[i].a != result[2*i] || out[i].b != result[2*i+1])
++ abort ();
++ }
++
++ return 0;
++}
++
++/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail { vect_no_align || {! vect_strided } } } } } */
++/* { dg-final { cleanup-tree-dump "vect" } } */
+
+=== added file 'gcc/testsuite/gcc.dg/vect/vect-cselim-2.c'
+--- old/gcc/testsuite/gcc.dg/vect/vect-cselim-2.c 1970-01-01 00:00:00 +0000
++++ new/gcc/testsuite/gcc.dg/vect/vect-cselim-2.c 2011-03-27 09:38:18 +0000
+@@ -0,0 +1,65 @@
++/* { dg-require-effective-target vect_int } */
++
++#include <stdarg.h>
++#include "tree-vect.h"
++
++#define N 50
++
++int a[N], b[N], in1[N], in2[N];
++int result[2*N] = {5,-7,7,-6,9,-5,11,-4,13,-3,15,-2,17,-1,19,0,21,1,23,2,25,3,27,4,29,5,31,6,33,7,35,8,37,9,39,10,41,11,43,12,45,13,47,14,49,15,51,16,53,17,55,18,57,19,59,20,61,21,63,22,65,23,67,24,69,25,71,26,73,27,75,28,77,29,79,30,81,31,83,32,85,33,87,34,89,35,91,36,93,37,95,38,97,39,99,40,101,41,103,42};
++
++__attribute__ ((noinline)) void
++foo (int *pa, int *pb)
++{
++ int i;
++ int c, d;
++
++ /* Store sinking should not work here since the pointers may alias. */
++ for (i = 0; i < N; i++)
++ {
++ c = in1[i];
++ d = in2[i];
++
++ if (c >= d)
++ {
++ *pa = c;
++ *pb = d + 5;
++ }
++ else
++ {
++ *pb = d - 12;
++ *pa = c + d;
++ }
++
++ pa++;
++ pb++;
++ }
++}
++
++int
++main (void)
++{
++ int i;
++
++ check_vect ();
++
++ for (i = 0; i < N; i++)
++ {
++ in1[i] = i;
++ in2[i] = i + 5;
++ __asm__ volatile ("");
++ }
++
++ foo (a, b);
++
++ for (i = 0; i < N; i++)
++ {
++ if (a[i] != result[2*i] || b[i] != result[2*i+1])
++ abort ();
++ }
++
++ return 0;
++}
++
++/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 0 "vect" } } */
++/* { dg-final { cleanup-tree-dump "vect" } } */
+
+=== modified file 'gcc/tree-data-ref.c'
+--- old/gcc/tree-data-ref.c 2011-02-05 01:39:20 +0000
++++ new/gcc/tree-data-ref.c 2011-03-27 09:38:18 +0000
+@@ -991,6 +991,48 @@
+ return dr;
+ }
+
++/* Check if OFFSET1 and OFFSET2 (DR_OFFSETs of some data-refs) are identical
++ expressions. */
++static bool
++dr_equal_offsets_p1 (tree offset1, tree offset2)
++{
++ bool res;
++
++ STRIP_NOPS (offset1);
++ STRIP_NOPS (offset2);
++
++ if (offset1 == offset2)
++ return true;
++
++ if (TREE_CODE (offset1) != TREE_CODE (offset2)
++ || (!BINARY_CLASS_P (offset1) && !UNARY_CLASS_P (offset1)))
++ return false;
++
++ res = dr_equal_offsets_p1 (TREE_OPERAND (offset1, 0),
++ TREE_OPERAND (offset2, 0));
++
++ if (!res || !BINARY_CLASS_P (offset1))
++ return res;
++
++ res = dr_equal_offsets_p1 (TREE_OPERAND (offset1, 1),
++ TREE_OPERAND (offset2, 1));
++
++ return res;
++}
++
++/* Check if DRA and DRB have equal offsets. */
++bool
++dr_equal_offsets_p (struct data_reference *dra,
++ struct data_reference *drb)
++{
++ tree offset1, offset2;
++
++ offset1 = DR_OFFSET (dra);
++ offset2 = DR_OFFSET (drb);
++
++ return dr_equal_offsets_p1 (offset1, offset2);
++}
++
+ /* Returns true if FNA == FNB. */
+
+ static bool
+@@ -4294,7 +4336,7 @@
+ DATAREFS. Returns chrec_dont_know when failing to analyze a
+ difficult case, returns NULL_TREE otherwise. */
+
+-static tree
++tree
+ find_data_references_in_bb (struct loop *loop, basic_block bb,
+ VEC (data_reference_p, heap) **datarefs)
+ {
+
+=== modified file 'gcc/tree-data-ref.h'
+--- old/gcc/tree-data-ref.h 2011-01-25 21:24:23 +0000
++++ new/gcc/tree-data-ref.h 2011-03-27 09:38:18 +0000
+@@ -426,10 +426,14 @@
+ extern void compute_all_dependences (VEC (data_reference_p, heap) *,
+ VEC (ddr_p, heap) **, VEC (loop_p, heap) *,
+ bool);
++extern tree find_data_references_in_bb (struct loop *, basic_block,
++ VEC (data_reference_p, heap) **);
+
+ extern void create_rdg_vertices (struct graph *, VEC (gimple, heap) *);
+ extern bool dr_may_alias_p (const struct data_reference *,
+ const struct data_reference *);
++extern bool dr_equal_offsets_p (struct data_reference *,
++ struct data_reference *);
+
+
+ /* Return true when the base objects of data references A and B are
+
+=== modified file 'gcc/tree-ssa-phiopt.c'
+--- old/gcc/tree-ssa-phiopt.c 2010-11-03 15:18:50 +0000
++++ new/gcc/tree-ssa-phiopt.c 2011-03-27 09:38:18 +0000
+@@ -34,6 +34,8 @@
+ #include "langhooks.h"
+ #include "pointer-set.h"
+ #include "domwalk.h"
++#include "cfgloop.h"
++#include "tree-data-ref.h"
+
+ static unsigned int tree_ssa_phiopt (void);
+ static unsigned int tree_ssa_phiopt_worker (bool);
+@@ -1292,35 +1294,18 @@
+ return true;
+ }
+
+-/* Do the main work of conditional store replacement. We already know
+- that the recognized pattern looks like so:
+-
+- split:
+- if (cond) goto THEN_BB; else goto ELSE_BB (edge E1)
+- THEN_BB:
+- X = Y;
+- goto JOIN_BB;
+- ELSE_BB:
+- X = Z;
+- fallthrough (edge E0)
+- JOIN_BB:
+- some more
+-
+- We check that THEN_BB and ELSE_BB contain only one store
+- that the stores have a "simple" RHS. */
++/* Do the main work of conditional store replacement. */
+
+ static bool
+-cond_if_else_store_replacement (basic_block then_bb, basic_block else_bb,
+- basic_block join_bb)
++cond_if_else_store_replacement_1 (basic_block then_bb, basic_block else_bb,
++ basic_block join_bb, gimple then_assign,
++ gimple else_assign)
+ {
+- gimple then_assign = last_and_only_stmt (then_bb);
+- gimple else_assign = last_and_only_stmt (else_bb);
+ tree lhs_base, lhs, then_rhs, else_rhs;
+ source_location then_locus, else_locus;
+ gimple_stmt_iterator gsi;
+ gimple newphi, new_stmt;
+
+- /* Check if then_bb and else_bb contain only one store each. */
+ if (then_assign == NULL
+ || !gimple_assign_single_p (then_assign)
+ || else_assign == NULL
+@@ -1385,6 +1370,190 @@
+ return true;
+ }
+
++/* Conditional store replacement. We already know
++ that the recognized pattern looks like so:
++
++ split:
++ if (cond) goto THEN_BB; else goto ELSE_BB (edge E1)
++ THEN_BB:
++ ...
++ X = Y;
++ ...
++ goto JOIN_BB;
++ ELSE_BB:
++ ...
++ X = Z;
++ ...
++ fallthrough (edge E0)
++ JOIN_BB:
++ some more
++
++ We check that it is safe to sink the store to JOIN_BB by verifying that
++ there are no read-after-write or write-after-write dependencies in
++ THEN_BB and ELSE_BB. */
++
++static bool
++cond_if_else_store_replacement (basic_block then_bb, basic_block else_bb,
++ basic_block join_bb)
++{
++ gimple then_assign = last_and_only_stmt (then_bb);
++ gimple else_assign = last_and_only_stmt (else_bb);
++ VEC (data_reference_p, heap) *then_datarefs, *else_datarefs;
++ VEC (ddr_p, heap) *then_ddrs, *else_ddrs;
++ gimple then_store, else_store;
++ bool found, ok = false, res;
++ struct data_dependence_relation *ddr;
++ data_reference_p then_dr, else_dr;
++ int i, j;
++ tree then_lhs, else_lhs;
++ VEC (gimple, heap) *then_stores, *else_stores;
++ basic_block blocks[3];
++
++ if (MAX_STORES_TO_SINK == 0)
++ return false;
++
++ /* Handle the case with single statement in THEN_BB and ELSE_BB. */
++ if (then_assign && else_assign)
++ return cond_if_else_store_replacement_1 (then_bb, else_bb, join_bb,
++ then_assign, else_assign);
++
++ /* Find data references. */
++ then_datarefs = VEC_alloc (data_reference_p, heap, 1);
++ else_datarefs = VEC_alloc (data_reference_p, heap, 1);
++ if ((find_data_references_in_bb (NULL, then_bb, &then_datarefs)
++ == chrec_dont_know)
++ || !VEC_length (data_reference_p, then_datarefs)
++ || (find_data_references_in_bb (NULL, else_bb, &else_datarefs)
++ == chrec_dont_know)
++ || !VEC_length (data_reference_p, else_datarefs))
++ {
++ free_data_refs (then_datarefs);
++ free_data_refs (else_datarefs);
++ return false;
++ }
++
++ /* Find pairs of stores with equal LHS. */
++ then_stores = VEC_alloc (gimple, heap, 1);
++ else_stores = VEC_alloc (gimple, heap, 1);
++ FOR_EACH_VEC_ELT (data_reference_p, then_datarefs, i, then_dr)
++ {
++ if (DR_IS_READ (then_dr))
++ continue;
++
++ then_store = DR_STMT (then_dr);
++ then_lhs = gimple_assign_lhs (then_store);
++ found = false;
++
++ FOR_EACH_VEC_ELT (data_reference_p, else_datarefs, j, else_dr)
++ {
++ if (DR_IS_READ (else_dr))
++ continue;
++
++ else_store = DR_STMT (else_dr);
++ else_lhs = gimple_assign_lhs (else_store);
++
++ if (operand_equal_p (then_lhs, else_lhs, 0))
++ {
++ found = true;
++ break;
++ }
++ }
++
++ if (!found)
++ continue;
++
++ VEC_safe_push (gimple, heap, then_stores, then_store);
++ VEC_safe_push (gimple, heap, else_stores, else_store);
++ }
++
++ /* No pairs of stores found. */
++ if (!VEC_length (gimple, then_stores)
++ || VEC_length (gimple, then_stores) > (unsigned) MAX_STORES_TO_SINK)
++ {
++ free_data_refs (then_datarefs);
++ free_data_refs (else_datarefs);
++ VEC_free (gimple, heap, then_stores);
++ VEC_free (gimple, heap, else_stores);
++ return false;
++ }
++
++ /* Compute and check data dependencies in both basic blocks. */
++ then_ddrs = VEC_alloc (ddr_p, heap, 1);
++ else_ddrs = VEC_alloc (ddr_p, heap, 1);
++ compute_all_dependences (then_datarefs, &then_ddrs, NULL, false);
++ compute_all_dependences (else_datarefs, &else_ddrs, NULL, false);
++ blocks[0] = then_bb;
++ blocks[1] = else_bb;
++ blocks[2] = join_bb;
++ renumber_gimple_stmt_uids_in_blocks (blocks, 3);
++
++ /* Check that there are no read-after-write or write-after-write dependencies
++ in THEN_BB. */
++ FOR_EACH_VEC_ELT (ddr_p, then_ddrs, i, ddr)
++ {
++ struct data_reference *dra = DDR_A (ddr);
++ struct data_reference *drb = DDR_B (ddr);
++
++ if (DDR_ARE_DEPENDENT (ddr) != chrec_known
++ && ((DR_IS_READ (dra) && DR_IS_WRITE (drb)
++ && gimple_uid (DR_STMT (dra)) > gimple_uid (DR_STMT (drb)))
++ || (DR_IS_READ (drb) && DR_IS_WRITE (dra)
++ && gimple_uid (DR_STMT (drb)) > gimple_uid (DR_STMT (dra)))
++ || (DR_IS_WRITE (dra) && DR_IS_WRITE (drb))))
++ {
++ free_dependence_relations (then_ddrs);
++ free_dependence_relations (else_ddrs);
++ free_data_refs (then_datarefs);
++ free_data_refs (else_datarefs);
++ VEC_free (gimple, heap, then_stores);
++ VEC_free (gimple, heap, else_stores);
++ return false;
++ }
++ }
++
++ /* Check that there are no read-after-write or write-after-write dependencies
++ in ELSE_BB. */
++ FOR_EACH_VEC_ELT (ddr_p, else_ddrs, i, ddr)
++ {
++ struct data_reference *dra = DDR_A (ddr);
++ struct data_reference *drb = DDR_B (ddr);
++
++ if (DDR_ARE_DEPENDENT (ddr) != chrec_known
++ && ((DR_IS_READ (dra) && DR_IS_WRITE (drb)
++ && gimple_uid (DR_STMT (dra)) > gimple_uid (DR_STMT (drb)))
++ || (DR_IS_READ (drb) && DR_IS_WRITE (dra)
++ && gimple_uid (DR_STMT (drb)) > gimple_uid (DR_STMT (dra)))
++ || (DR_IS_WRITE (dra) && DR_IS_WRITE (drb))))
++ {
++ free_dependence_relations (then_ddrs);
++ free_dependence_relations (else_ddrs);
++ free_data_refs (then_datarefs);
++ free_data_refs (else_datarefs);
++ VEC_free (gimple, heap, then_stores);
++ VEC_free (gimple, heap, else_stores);
++ return false;
++ }
++ }
++
++ /* Sink stores with same LHS. */
++ FOR_EACH_VEC_ELT (gimple, then_stores, i, then_store)
++ {
++ else_store = VEC_index (gimple, else_stores, i);
++ res = cond_if_else_store_replacement_1 (then_bb, else_bb, join_bb,
++ then_store, else_store);
++ ok = ok || res;
++ }
++
++ free_dependence_relations (then_ddrs);
++ free_dependence_relations (else_ddrs);
++ free_data_refs (then_datarefs);
++ free_data_refs (else_datarefs);
++ VEC_free (gimple, heap, then_stores);
++ VEC_free (gimple, heap, else_stores);
++
++ return ok;
++}
++
+ /* Always do these optimizations if we have SSA
+ trees to work on. */
+ static bool
+
+=== modified file 'gcc/tree-vect-data-refs.c'
+--- old/gcc/tree-vect-data-refs.c 2011-02-25 11:18:14 +0000
++++ new/gcc/tree-vect-data-refs.c 2011-03-27 09:38:18 +0000
+@@ -289,39 +289,6 @@
+ }
+ }
+
+-
+-/* Function vect_equal_offsets.
+-
+- Check if OFFSET1 and OFFSET2 are identical expressions. */
+-
+-static bool
+-vect_equal_offsets (tree offset1, tree offset2)
+-{
+- bool res;
+-
+- STRIP_NOPS (offset1);
+- STRIP_NOPS (offset2);
+-
+- if (offset1 == offset2)
+- return true;
+-
+- if (TREE_CODE (offset1) != TREE_CODE (offset2)
+- || (!BINARY_CLASS_P (offset1) && !UNARY_CLASS_P (offset1)))
+- return false;
+-
+- res = vect_equal_offsets (TREE_OPERAND (offset1, 0),
+- TREE_OPERAND (offset2, 0));
+-
+- if (!res || !BINARY_CLASS_P (offset1))
+- return res;
+-
+- res = vect_equal_offsets (TREE_OPERAND (offset1, 1),
+- TREE_OPERAND (offset2, 1));
+-
+- return res;
+-}
+-
+-
+ /* Check dependence between DRA and DRB for basic block vectorization.
+ If the accesses share same bases and offsets, we can compare their initial
+ constant offsets to decide whether they differ or not. In case of a read-
+@@ -352,7 +319,7 @@
+ || TREE_CODE (DR_BASE_ADDRESS (drb)) != ADDR_EXPR
+ || TREE_OPERAND (DR_BASE_ADDRESS (dra), 0)
+ != TREE_OPERAND (DR_BASE_ADDRESS (drb),0)))
+- || !vect_equal_offsets (DR_OFFSET (dra), DR_OFFSET (drb)))
++ || !dr_equal_offsets_p (dra, drb))
+ return true;
+
+ /* Check the types. */
+@@ -402,7 +369,7 @@
+ || TREE_CODE (DR_BASE_ADDRESS (drb)) != ADDR_EXPR
+ || TREE_OPERAND (DR_BASE_ADDRESS (dra), 0)
+ != TREE_OPERAND (DR_BASE_ADDRESS (drb),0)))
+- || !vect_equal_offsets (DR_OFFSET (dra), DR_OFFSET (drb))
++ || !dr_equal_offsets_p (dra, drb)
+ || !tree_int_cst_compare (DR_INIT (dra), DR_INIT (drb))
+ || DR_IS_READ (dra) != DR_IS_READ (drb))
+ return false;
+
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106737.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106737.patch
new file mode 100644
index 0000000..017b1df
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106737.patch
@@ -0,0 +1,126 @@
+2011-04-21 Andrew Stubbs <ams at codesourcery.com>
+
+ Backport from FSF:
+
+ 2008-12-03 Daniel Jacobowitz <dan at codesourcery.com>
+
+ gcc/testsuite/
+ * gcc.dg/vect/vect-shift-3.c, gcc.dg/vect/vect-shift-4.c: New.
+ * lib/target-supports.exp (check_effective_target_vect_shift_char): New
+ function.
+
+=== added file 'gcc/testsuite/gcc.dg/vect/vect-shift-3.c'
+--- old/gcc/testsuite/gcc.dg/vect/vect-shift-3.c 1970-01-01 00:00:00 +0000
++++ new/gcc/testsuite/gcc.dg/vect/vect-shift-3.c 2011-04-21 13:51:06 +0000
+@@ -0,0 +1,37 @@
++/* { dg-require-effective-target vect_shift } */
++/* { dg-require-effective-target vect_int } */
++
++#include "tree-vect.h"
++
++#define N 32
++
++unsigned short dst[N] __attribute__((aligned(N)));
++unsigned short src[N] __attribute__((aligned(N)));
++
++__attribute__ ((noinline))
++void array_shift(void)
++{
++ int i;
++ for (i = 0; i < N; i++)
++ dst[i] = src[i] >> 3;
++}
++
++int main()
++{
++ volatile int i;
++ check_vect ();
++
++ for (i = 0; i < N; i++)
++ src[i] = i << 3;
++
++ array_shift ();
++
++ for (i = 0; i < N; i++)
++ if (dst[i] != i)
++ abort ();
++
++ return 0;
++}
++
++/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
++/* { dg-final { cleanup-tree-dump "vect" } } */
+
+=== added file 'gcc/testsuite/gcc.dg/vect/vect-shift-4.c'
+--- old/gcc/testsuite/gcc.dg/vect/vect-shift-4.c 1970-01-01 00:00:00 +0000
++++ new/gcc/testsuite/gcc.dg/vect/vect-shift-4.c 2011-04-21 13:51:06 +0000
+@@ -0,0 +1,37 @@
++/* { dg-require-effective-target vect_shift_char } */
++/* { dg-require-effective-target vect_int } */
++
++#include "tree-vect.h"
++
++#define N 32
++
++unsigned char dst[N] __attribute__((aligned(N)));
++unsigned char src[N] __attribute__((aligned(N)));
++
++__attribute__ ((noinline))
++void array_shift(void)
++{
++ int i;
++ for (i = 0; i < N; i++)
++ dst[i] = src[i] >> 3;
++}
++
++int main()
++{
++ volatile int i;
++ check_vect ();
++
++ for (i = 0; i < N; i++)
++ src[i] = i << 3;
++
++ array_shift ();
++
++ for (i = 0; i < N; i++)
++ if (dst[i] != i)
++ abort ();
++
++ return 0;
++}
++
++/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
++/* { dg-final { cleanup-tree-dump "vect" } } */
+
+=== modified file 'gcc/testsuite/lib/target-supports.exp'
+--- old/gcc/testsuite/lib/target-supports.exp 2011-02-19 15:31:15 +0000
++++ new/gcc/testsuite/lib/target-supports.exp 2011-04-21 13:51:06 +0000
+@@ -2308,6 +2308,26 @@
+ }
+
+
++# Return 1 if the target supports hardware vector shift operation for char.
++
++proc check_effective_target_vect_shift_char { } {
++ global et_vect_shift_char_saved
++
++ if [info exists et_vect_shift_char_saved] {
++ verbose "check_effective_target_vect_shift_char: using cached result" 2
++ } else {
++ set et_vect_shift_char_saved 0
++ if { ([istarget powerpc*-*-*]
++ && ![istarget powerpc-*-linux*paired*])
++ || [check_effective_target_arm32] } {
++ set et_vect_shift_char_saved 1
++ }
++ }
++
++ verbose "check_effective_target_vect_shift_char: returning $et_vect_shift_char_saved" 2
++ return $et_vect_shift_char_saved
++}
++
+ # Return 1 if the target supports hardware vectors of long, 0 otherwise.
+ #
+ # This can change for different subtargets so do not cache the result.
+
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106738.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106738.patch
new file mode 100644
index 0000000..3dde3b2
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.6.0/linaro/gcc-4.6-linaro-r106738.patch
@@ -0,0 +1,177 @@
+2011-04-27 Ira Rosen <ira.rosen at linaro.org>
+
+ Backport from FSF:
+
+ 2011-04-03 Richard Guenther <rguenther at suse.de>
+ Ira Rosen <ira.rosen at linaro.org>
+
+ gcc/
+ * tree-if-conv.c (memrefs_read_or_written_unconditionally): Strip all
+ non-variable offsets and compare the remaining bases of the two
+ accesses instead of looking for exact same data-ref.
+
+ gcc/testsuite/
+ * gcc.dg/vect/if-cvt-stores-vect-ifcvt-18.c: New test.
+ * gcc.dg/vect/vect.exp: Run if-cvt-stores-vect* tests with
+ -ftree-loop-if-convert-stores.
+
+=== added file 'gcc/testsuite/gcc.dg/vect/if-cvt-stores-vect-ifcvt-18.c'
+--- old/gcc/testsuite/gcc.dg/vect/if-cvt-stores-vect-ifcvt-18.c 1970-01-01 00:00:00 +0000
++++ new/gcc/testsuite/gcc.dg/vect/if-cvt-stores-vect-ifcvt-18.c 2011-04-24 07:45:49 +0000
+@@ -0,0 +1,69 @@
++/* { dg-require-effective-target vect_int } */
++
++#include <stdarg.h>
++#include "tree-vect.h"
++
++#define N 50
++
++typedef struct {
++ short a;
++ short b;
++} data;
++
++data in1[N], in2[N], out[N];
++short result[N*2] = {10,-7,11,-6,12,-5,13,-4,14,-3,15,-2,16,-1,17,0,18,1,19,2,20,3,21,4,22,5,23,6,24,7,25,8,26,9,27,10,28,11,29,12,30,13,31,14,32,15,33,16,34,17,35,18,36,19,37,20,38,21,39,22,40,23,41,24,42,25,43,26,44,27,45,28,46,29,47,30,48,31,49,32,50,33,51,34,52,35,53,36,54,37,55,38,56,39,57,40,58,41,59,42};
++short out1[N], out2[N];
++
++__attribute__ ((noinline)) void
++foo ()
++{
++ int i;
++ short c, d;
++
++ for (i = 0; i < N; i++)
++ {
++ c = in1[i].b;
++ d = in2[i].b;
++
++ if (c >= d)
++ {
++ out[i].b = in1[i].a;
++ out[i].a = d + 5;
++ }
++ else
++ {
++ out[i].b = d - 12;
++ out[i].a = in2[i].a + d;
++ }
++ }
++}
++
++int
++main (void)
++{
++ int i;
++
++ check_vect ();
++
++ for (i = 0; i < N; i++)
++ {
++ in1[i].a = i;
++ in1[i].b = i + 2;
++ in2[i].a = 5;
++ in2[i].b = i + 5;
++ __asm__ volatile ("");
++ }
++
++ foo ();
++
++ for (i = 0; i < N; i++)
++ {
++ if (out[i].a != result[2*i] || out[i].b != result[2*i+1])
++ abort ();
++ }
++
++ return 0;
++}
++
++/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail { vect_no_align || {! vect_strided } } } } } */
++/* { dg-final { cleanup-tree-dump "vect" } } */
+
+=== modified file 'gcc/testsuite/gcc.dg/vect/vect.exp'
+--- old/gcc/testsuite/gcc.dg/vect/vect.exp 2010-11-22 21:49:19 +0000
++++ new/gcc/testsuite/gcc.dg/vect/vect.exp 2011-04-24 07:45:49 +0000
+@@ -210,6 +210,12 @@
+ dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/ggc-*.\[cS\]]] \
+ "" $DEFAULT_VECTCFLAGS
+
++# -ftree-loop-if-convert-stores
++set DEFAULT_VECTCFLAGS $SAVED_DEFAULT_VECTCFLAGS
++lappend DEFAULT_VECTCFLAGS "-ftree-loop-if-convert-stores"
++dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/if-cvt-stores-vect-*.\[cS\]]] \
++ "" $DEFAULT_VECTCFLAGS
++
+ # With -O3.
+ # Don't allow IPA cloning, because it throws our counts out of whack.
+ set DEFAULT_VECTCFLAGS $SAVED_DEFAULT_VECTCFLAGS
+
+=== modified file 'gcc/tree-if-conv.c'
+--- old/gcc/tree-if-conv.c 2011-02-23 16:49:52 +0000
++++ new/gcc/tree-if-conv.c 2011-04-24 07:45:49 +0000
+@@ -464,8 +464,8 @@
+ /* Returns true when the memory references of STMT are read or written
+ unconditionally. In other words, this function returns true when
+ for every data reference A in STMT there exist other accesses to
+- the same data reference with predicates that add up (OR-up) to the
+- true predicate: this ensures that the data reference A is touched
++ a data reference with the same base with predicates that add up (OR-up) to
++ the true predicate: this ensures that the data reference A is touched
+ (read or written) on every iteration of the if-converted loop. */
+
+ static bool
+@@ -489,21 +489,38 @@
+ continue;
+
+ for (j = 0; VEC_iterate (data_reference_p, drs, j, b); j++)
+- if (DR_STMT (b) != stmt
+- && same_data_refs (a, b))
+- {
+- tree cb = bb_predicate (gimple_bb (DR_STMT (b)));
+-
+- if (DR_RW_UNCONDITIONALLY (b) == 1
+- || is_true_predicate (cb)
+- || is_true_predicate (ca = fold_or_predicates (EXPR_LOCATION (cb),
+- ca, cb)))
+- {
+- DR_RW_UNCONDITIONALLY (a) = 1;
+- DR_RW_UNCONDITIONALLY (b) = 1;
+- found = true;
+- break;
+- }
++ {
++ tree ref_base_a = DR_REF (a);
++ tree ref_base_b = DR_REF (b);
++
++ if (DR_STMT (b) == stmt)
++ continue;
++
++ while (TREE_CODE (ref_base_a) == COMPONENT_REF
++ || TREE_CODE (ref_base_a) == IMAGPART_EXPR
++ || TREE_CODE (ref_base_a) == REALPART_EXPR)
++ ref_base_a = TREE_OPERAND (ref_base_a, 0);
++
++ while (TREE_CODE (ref_base_b) == COMPONENT_REF
++ || TREE_CODE (ref_base_b) == IMAGPART_EXPR
++ || TREE_CODE (ref_base_b) == REALPART_EXPR)
++ ref_base_b = TREE_OPERAND (ref_base_b, 0);
++
++ if (!operand_equal_p (ref_base_a, ref_base_b, 0))
++ {
++ tree cb = bb_predicate (gimple_bb (DR_STMT (b)));
++
++ if (DR_RW_UNCONDITIONALLY (b) == 1
++ || is_true_predicate (cb)
++ || is_true_predicate (ca
++ = fold_or_predicates (EXPR_LOCATION (cb), ca, cb)))
++ {
++ DR_RW_UNCONDITIONALLY (a) = 1;
++ DR_RW_UNCONDITIONALLY (b) = 1;
++ found = true;
++ break;
++ }
++ }
+ }
+
+ if (!found)
+
diff --git a/meta/recipes-devtools/gcc/gcc-4_6-branch-linaro-backports.inc b/meta/recipes-devtools/gcc/gcc-4_6-branch-linaro-backports.inc
new file mode 100644
index 0000000..3160e35
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4_6-branch-linaro-backports.inc
@@ -0,0 +1,9 @@
+GCC-4_6-BRANCH-LINARO-BACKPORTS = " \
+file://linaro/gcc-4.6-linaro-r106720.patch \
+file://linaro/gcc-4.6-linaro-r106723.patch \
+file://linaro/gcc-4.6-linaro-r106729.patch \
+file://linaro/gcc-4.6-linaro-r106731.patch \
+file://linaro/gcc-4.6-linaro-r106733.patch \
+file://linaro/gcc-4.6-linaro-r106737.patch \
+file://linaro/gcc-4.6-linaro-r106738.patch \
+"
--
1.7.3.4
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