package/gcc: fix ICE building QT5 on xtensa

Add fix for GCC PR 64896 from the gcc-4_9-branch of gcc.
This fixes bugzilla bug 7961.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

diff --git a/package/gcc/4.9.2/110-pr64896.patch b/package/gcc/4.9.2/110-pr64896.patch
new file mode 100644 (file)
index 0000000..92b6cb8
--- /dev/null
+++ b/package/gcc/4.9.2/110-pr64896.patch
@@ -0,0 +1,59 @@
+From fc39d7d6f0ac90086814306a43de38ad65c13f13 Mon Sep 17 00:00:00 2001
+From: yroux <yroux@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 10 Mar 2015 19:20:30 +0000
+Subject: [PATCH] gcc/ 2015-03-10  Yvan Roux  <yvan.roux@linaro.org>
+
+       Backport from trunk r220489.
+       2015-02-06  Jakub Jelinek  <jakub@redhat.com>
+
+       PR ipa/64896
+       * cgraphunit.c (cgraph_node::expand_thunk): If
+       restype is not is_gimple_reg_type nor the thunk_fndecl
+       returns aggregate_value_p, set restmp to a temporary variable
+       instead of resdecl.
+
+gcc/testsuite/
+2015-03-10  Yvan Roux  <yvan.roux@linaro.org>
+
+       Backport from trunk r220489.
+       2015-02-06  Jakub Jelinek  <jakub@redhat.com>
+
+       PR ipa/64896
+       * g++.dg/ipa/pr64896.C: New test.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@221333 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/ChangeLog                      | 11 +++++++++++
+ gcc/cgraphunit.c                   | 11 ++++++++---
+ gcc/testsuite/ChangeLog            |  8 ++++++++
+ gcc/testsuite/g++.dg/ipa/pr64896.C | 29 +++++++++++++++++++++++++++++
+ 4 files changed, 56 insertions(+), 3 deletions(-)
+ create mode 100644 gcc/testsuite/g++.dg/ipa/pr64896.C
+
+diff --git a/gcc/cgraphunit.c b/gcc/cgraphunit.c
+index 8f57607..130fc0d 100644
+--- a/gcc/cgraphunit.c
++++ b/gcc/cgraphunit.c
+@@ -1572,9 +1572,14 @@ expand_thunk (struct cgraph_node *node, bool output_asm_thunks)
+           restmp = gimple_fold_indirect_ref (resdecl);
+         else if (!is_gimple_reg_type (restype))
+           {
+-            restmp = resdecl;
+-            add_local_decl (cfun, restmp);
+-            BLOCK_VARS (DECL_INITIAL (current_function_decl)) = restmp;
++            if (aggregate_value_p (resdecl, TREE_TYPE (thunk_fndecl)))
++              {
++                restmp = resdecl;
++                add_local_decl (cfun, restmp);
++                BLOCK_VARS (DECL_INITIAL (current_function_decl)) = restmp;
++              }
++            else
++              restmp = create_tmp_var (restype, "retval");
+           }
+         else
+           restmp = create_tmp_reg (restype, "retval");
+-- 
+1.8.1.4
+