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: r251989

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e0e0613e96ec54547d57b6b1e27e0d4a8a0a8d7f..f0d393a92d792fb35c1ef67416f8686d2915f929 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 2bdf5ccef979872670ebabf29eb7e75aeec92af0..92fdeb08046d5e818c6877008f7a431e72a2e2d0 100644 (file)
--- 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));