diff --git a/backport-fix-ICE-during-GIMPLE-pass-dse.patch b/backport-fix-ICE-during-GIMPLE-pass-dse.patch
new file mode 100644
index 0000000000000000000000000000000000000000..ca9076b6b5fce195e183a0b0021a0f9018422f93
--- /dev/null
+++ b/backport-fix-ICE-during-GIMPLE-pass-dse.patch
@@ -0,0 +1,17 @@
+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
+@@ -119,10 +119,11 @@ initialize_ao_ref_for_dse (gimple *stmt,
+ 	    {
+ 	      tree nelem = gimple_call_arg (stmt, 0);
+ 	      tree selem = gimple_call_arg (stmt, 1);
++	      tree lhs;
+ 	      if (TREE_CODE (nelem) == INTEGER_CST
+-		  && TREE_CODE (selem) == INTEGER_CST)
++		  && TREE_CODE (selem) == INTEGER_CST
++		  && (lhs = gimple_call_lhs (stmt)) != NULL_TREE)
+ 		{
+-		  tree lhs = gimple_call_lhs (stmt);
+ 		  tree size = fold_build2 (MULT_EXPR, TREE_TYPE (nelem),
+ 					   nelem, selem);
+ 		  ao_ref_init_from_ptr_and_size (write, lhs, size);
diff --git a/gcc.spec b/gcc.spec
index fb819094363a53a3915234adc973f5191bdbc44f..a6ab02254dd2a121ce258bc365190b6f8ffd99b2 100644
--- a/gcc.spec
+++ b/gcc.spec
@@ -1,4 +1,4 @@
-%global DATE 20200905
+%global DATE 20200909
 
 %global gcc_version 9.3.1
 %global gcc_major 9.3.1
@@ -175,6 +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
 
 
 %global gcc_target_platform %{_arch}-linux-gnu
@@ -681,6 +682,7 @@ not stable, so plugins must be rebuilt any time GCC is updated.
 %patch61 -p1
 %patch62 -p1
 %patch63 -p1
+%patch64 -p1
 
 
 %build
@@ -2609,6 +2611,9 @@ end
 %doc rpm.doc/changelogs/libcc1/ChangeLog*
 
 %changelog
+* Wed Spe 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
 - fix-avoid-bogus-uninit-warning-with-store-motion.patch: New file