diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 011fe4c60ac..36b1b2baa8b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2018-11-29  Alan Modra  <amodra@gmail.com>
+
+	* config/rs6000/rs6000.c (rs6000_emit_move): Disable long
+	double split for targets other than Darwin.
+
 2018-11-29  Alan Modra  <amodra@gmail.com>
 
 	* config/rs6000/rs6000.md (movdi_internal64): Correct lengths.
@@ -692,7 +697,7 @@
 
 2018-11-23  Christoph Muellner  <christoph.muellner@theobroma-systems.com>
 
-        * config/aarch64/aarch64-cores.def: Define emag.
+	* config/aarch64/aarch64-cores.def: Define emag.
 	* config/aarch64/aarch64-tune.md: Regenerated with emag.
 	* config/aarch64/aarch64.c (emag_tunings): New struct.
 	* doc/invoke.texi: Document mtune value.
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 93d58a2855f..d986207a0c6 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -9967,8 +9967,8 @@ rs6000_emit_move (rtx dest, rtx source, machine_mode mode)
   /* 128-bit constant floating-point values on Darwin should really be loaded
      as two parts.  However, this premature splitting is a problem when DFmode
      values can go into Altivec registers.  */
-  if (FLOAT128_IBM_P (mode) && !reg_addr[DFmode].scalar_in_vmx_p
-      && GET_CODE (operands[1]) == CONST_DOUBLE)
+  if (TARGET_MACHO && CONST_DOUBLE_P (operands[1]) && FLOAT128_IBM_P (mode)
+      && !reg_addr[DFmode].scalar_in_vmx_p)
     {
       rs6000_emit_move (simplify_gen_subreg (DFmode, operands[0], mode, 0),
 			simplify_gen_subreg (DFmode, operands[1], mode, 0),