xtensa: fix PR target/82181

2017-09-11 Max Filippov <jcmvbkbc@gmail.com> gcc/ Backport from mainline * config/xtensa/xtensa.c (xtensa_mem_offset): Check that both words of DImode object are reachable by xtensa_uimm8x4 access. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-6-branch@251989 138bc75d-0d04-0410-961f-82ee72b054a4
gcc-mirror · Sep 11, 2017 · dbbb835 · dbbb835
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diff --git a/gcc/ChangeLog b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2017-09-11  Max Filippov  <jcmvbkbc@gmail.com>
+
+	Backport from mainline
+	PR target/82181
+	* config/xtensa/xtensa.c (xtensa_mem_offset): Check that both
+	words of DImode object are reachable by xtensa_uimm8x4 access.
+
 2017-09-06  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
 
 	Backport from mainline:

diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
@@ -601,6 +601,7 @@ xtensa_mem_offset (unsigned v, machine_mode mode)
     case HImode:
       return xtensa_uimm8x2 (v);
 
+    case DImode:
     case DFmode:
       return (xtensa_uimm8x4 (v) && xtensa_uimm8x4 (v + 4));