diff --git a/backport-fix-ICE-during-GIMPLE-pass-dse.patch b/fix-ICE-during-GIMPLE-pass-dse.patch
similarity index 40%
rename from backport-fix-ICE-during-GIMPLE-pass-dse.patch
rename to fix-ICE-during-GIMPLE-pass-dse.patch
index ca9076b6b5fce195e183a0b0021a0f9018422f93..32791059bc8b593d46b5f869c749b78066c857cd 100644
--- a/backport-fix-ICE-during-GIMPLE-pass-dse.patch
+++ b/fix-ICE-during-GIMPLE-pass-dse.patch
@@ -1,6 +1,24 @@
+This backport contains 1 patch from gcc main stream tree.
+The commit id of these patchs list as following in the order of time.
+
+0001-Fix-ICE-when-__builtin_calloc-has-no-LHS-PR-tree-opt.patch
+4c4be718fb65f9b8dd06d83c6fa3f697a5369d52
+
+diff -Nurp a/gcc/testsuite/gcc.target/s390/pr91014.c b/gcc/testsuite/gcc.target/s390/pr91014.c
+--- a/gcc/testsuite/gcc.target/s390/pr91014.c	1970-01-01 08:00:00.000000000 +0800
++++ b/gcc/testsuite/gcc.target/s390/pr91014.c	2020-09-09 15:47:34.740000000 +0800
+@@ -0,0 +1,8 @@
++/* { dg-do compile } */
++/* { dg-options "-O" } */
++/* { dg-require-effective-target alloca } */
++
++void foo(void)
++{
++ __builtin_calloc (1, 1); /* { dg-warning "ignoring return value of '__builtin_calloc' declared with attribute 'warn_unused_result'" } */
++}
 diff -Nurp a/gcc/tree-ssa-dse.c b/gcc/tree-ssa-dse.c
---- a/gcc/tree-ssa-dse.c	2020-09-09 15:47:21 084000000 +800
-+++ b/gcc/tree-ssa-dse.c	2020-09-09 15:47:34 740000000 +800
+--- a/gcc/tree-ssa-dse.c	2020-09-09 15:47:21.084000000 +0800
++++ b/gcc/tree-ssa-dse.c	2020-09-09 15:47:34.740000000 +0800
 @@ -119,10 +119,11 @@ initialize_ao_ref_for_dse (gimple *stmt,
  	    {
  	      tree nelem = gimple_call_arg (stmt, 0);
diff --git a/gcc.spec b/gcc.spec
index a6ab02254dd2a121ce258bc365190b6f8ffd99b2..f6e3b34292c742d35e35695d54625bee977cd8fe 100644
--- a/gcc.spec
+++ b/gcc.spec
@@ -1,4 +1,4 @@
-%global DATE 20200909
+%global DATE 20200911
 
 %global gcc_version 9.3.1
 %global gcc_major 9.3.1
@@ -59,7 +59,7 @@
 Summary: Various compilers (C, C++, Objective-C, ...)
 Name: gcc
 Version: %{gcc_version}
-Release: %{DATE}.4
+Release: %{DATE}.6
 License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ with exceptions and LGPLv2+ and BSD
 Source0: gcc-9.3.0.tar.xz
 %global isl_version 0.16.1
@@ -175,7 +175,7 @@ Patch60: fix-load-eliding-in-SM.patch
 Patch61: fix-SSA-update-for-vectorizer-epilogue.patch
 Patch62: fix-ICE-when-vectorizing-nested-cycles.patch
 Patch63: fix-avoid-bogus-uninit-warning-with-store-motion.patch
-Patch64: backport-fix-ICE-during-GIMPLE-pass-dse.patch
+Patch64: fix-ICE-during-GIMPLE-pass-dse.patch
 
 
 %global gcc_target_platform %{_arch}-linux-gnu
@@ -2611,7 +2611,10 @@ end
 %doc rpm.doc/changelogs/libcc1/ChangeLog*
 
 %changelog
-* Wed Spe 09 2020 jdkboy <guoge1@huawei.com> - 9.3.1-20200909.5
+* Fri Sep 11 2020 eastb233 <xiezhiheng@huawei.com> - 9.3.1-20200911.6
+- fix-ICE-during-GIMPLE-pass-dse.patch: Add test case
+
+* Wed Sep 09 2020 jdkboy <guoge1@huawei.com> - 9.3.1-20200909.5
 - add backport-fix-ICE-during-GIMPLE-pass-dse.patch
 
 * Sat Sep 05 2020 eastb233 <xiezhiheng@huawei.com> - 9.3.1-20200905.4