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.

From-SVN: r251990

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0dd67c14a4da11022c098e9d8979709ce5ff6d06..41a341c37fdafa3dc00b9f53cbc8ae62296e198b 100644 (file)
--- 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
index 1c15a7664d9b3c8ec919e04b593e99e1b4fcc05a..adbe13b963e33b3caffd7eadef114e869504283e 100644 (file)
--- a/gcc/config/xtensa/xtensa.c
+++ b/gcc/config/xtensa/xtensa.c
@@ -634,6 +634,7 @@ 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));