[PATCH] gcc-4.8: backport fix for ICE when building opus

[Martin Jansa <martin.jansa@gmail.com>]

From: Martin Jansa <martin.jansa@lge.com>

* backported from 4.8.2, so daisy isn't affected

Signed-off-by: Martin Jansa <martin.jansa@lge.com>
---
 meta/recipes-devtools/gcc/gcc-4.8.inc              |   1 +
 .../gcc-4.8/0001-fix-ICE-when-building-opus.patch  | 121 +++++++++++++++++++++
 2 files changed, 122 insertions(+)
 create mode 100644 meta/recipes-devtools/gcc/gcc-4.8/0001-fix-ICE-when-building-opus.patch

diff --git a/meta/recipes-devtools/gcc/gcc-4.8.inc b/meta/recipes-devtools/gcc/gcc-4.8.inc
index f1260af..ac205de 100644
--- a/meta/recipes-devtools/gcc/gcc-4.8.inc
+++ b/meta/recipes-devtools/gcc/gcc-4.8.inc
@@ -79,6 +79,7 @@ SRC_URI = "${GNU_MIRROR}/gcc/gcc-${PV}/gcc-${PV}.tar.bz2 \
 	   file://0047-repomembug.patch \
 	   file://0048-PR57532.patch \
 	   file://0048-PR58854_fix_arm_apcs_epilogue.patch \
+           file://0001-fix-ICE-when-building-opus.patch \
 	  "
 SRC_URI[md5sum] = "3b2386c114cd74185aa3754b58a79304"
 SRC_URI[sha256sum] = "545b44be3ad9f2c4e90e6880f5c9d4f0a8f0e5f67e1ffb0d45da9fa01bb05813"
diff --git a/meta/recipes-devtools/gcc/gcc-4.8/0001-fix-ICE-when-building-opus.patch b/meta/recipes-devtools/gcc/gcc-4.8/0001-fix-ICE-when-building-opus.patch
new file mode 100644
index 0000000..9d3aeaa
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.8/0001-fix-ICE-when-building-opus.patch
@@ -0,0 +1,121 @@
+From 22228d8ba86c70381f7c34c22ac6994234d0f3e7 Mon Sep 17 00:00:00 2001
+From: xguo <xguo@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Fri, 9 Aug 2013 06:59:01 +0000
+Subject: [PATCH] gcc/ChangeLog:
+
+        Backport from mainline:
+        2013-08-09  Zhenqiang Chen  <zhenqiang.chen@linaro.org>
+
+        * config/arm/neon.md (vcond): Fix floating-point vector
+        comparisons against 0.
+
+gcc/testsuite/ChangeLog:
+
+        Backport from mainline:
+        2013-08-09  Zhenqiang Chen  <zhenqiang.chen@linaro.org>
+
+        * gcc.target/arm/lp1189445.c: New testcase.
+
+Upstream-Status: Backport from 4.8.2
+Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
+
+More details in:
+http://gcc.1065356.n5.nabble.com/PATCH-ARM-Fix-unrecognizable-vector-comparisons-td947064.html
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_8-branch@201620 138bc75d-0d04-0410-961f-82ee72b054a4
+---
+ gcc/ChangeLog                            |  8 ++++++++
+ gcc/config/arm/neon.md                   | 34 +++++++++++++++++++++++++++-----
+ gcc/testsuite/ChangeLog                  |  7 +++++++
+ gcc/testsuite/gcc.target/arm/lp1189445.c | 18 +++++++++++++++++
+ 4 files changed, 62 insertions(+), 5 deletions(-)
+ create mode 100644 gcc/testsuite/gcc.target/arm/lp1189445.c
+
+diff --git a/gcc/config/arm/neon.md b/gcc/config/arm/neon.md
+index d8d4202..86a5932 100644
+--- a/gcc/config/arm/neon.md
++++ b/gcc/config/arm/neon.md
+@@ -1732,6 +1732,7 @@
+ 			     ? 3 : 1;
+   rtx magic_rtx = GEN_INT (magic_word);
+   int inverse = 0;
++  int use_zero_form = 0;
+   int swap_bsl_operands = 0;
+   rtx mask = gen_reg_rtx (<V_cmp_result>mode);
+   rtx tmp = gen_reg_rtx (<V_cmp_result>mode);
+@@ -1742,12 +1743,16 @@
+   switch (GET_CODE (operands[3]))
+     {
+     case GE:
++    case GT:
+     case LE:
++    case LT:
+     case EQ:
+-      if (!REG_P (operands[5])
+-	  && (operands[5] != CONST0_RTX (<MODE>mode)))
+-	operands[5] = force_reg (<MODE>mode, operands[5]);
+-      break;
++      if (operands[5] == CONST0_RTX (<MODE>mode))
++	{
++	  use_zero_form = 1;
++	  break;
++	}
++      /* Fall through.  */
+     default:
+       if (!REG_P (operands[5]))
+ 	operands[5] = force_reg (<MODE>mode, operands[5]);
+@@ -1798,7 +1803,26 @@
+ 	 a GT b -> a GT b
+ 	 a LE b -> b GE a
+ 	 a LT b -> b GT a
+-	 a EQ b -> a EQ b  */
++	 a EQ b -> a EQ b
++	 Note that there also exist direct comparison against 0 forms,
++	 so catch those as a special case.  */
++      if (use_zero_form)
++	{
++	  inverse = 0;
++	  switch (GET_CODE (operands[3]))
++	    {
++	    case LT:
++	      base_comparison = gen_neon_vclt<mode>;
++	      break;
++	    case LE:
++	      base_comparison = gen_neon_vcle<mode>;
++	      break;
++	    default:
++	      /* Do nothing, other zero form cases already have the correct
++		 base_comparison.  */
++	      break;
++	    }
++	}
+ 
+       if (!inverse)
+ 	emit_insn (base_comparison (mask, operands[4], operands[5], magic_rtx));
+diff --git a/gcc/testsuite/gcc.target/arm/lp1189445.c b/gcc/testsuite/gcc.target/arm/lp1189445.c
+new file mode 100644
+index 0000000..766748e
+--- /dev/null
++++ b/gcc/testsuite/gcc.target/arm/lp1189445.c
+@@ -0,0 +1,18 @@
++/* { dg-do compile } */
++/* { dg-require-effective-target arm_neon } */
++/* { dg-add-options arm_neon } */
++/* { dg-options "-O3" } */
++
++int id;
++int
++test (const long int *data)
++{
++  int i, retval;
++  retval = id;
++  for (i = 0; i < id; i++)
++    {
++      retval &= (data[i] <= 0);
++    }
++
++  return (retval);
++}
+-- 
+2.0.0
+
-- 
1.9.1