Use preferred 64-bit alignment for i64 & f64 for Thumb targets.  Radar 9695134.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134070 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 6dbda98..afad27c 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -1879,7 +1879,7 @@
         // Thumb1 add sp, #imm requires the immediate value be multiple of 4,
         // so set preferred for small types to 32.
         DescriptionString = ("e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-"
-                             "i64:32:32-f32:32:32-f64:32:32-"
+                             "i64:32:64-f32:32:32-f64:32:64-"
                              "v64:32:64-v128:32:128-a0:0:32-n32");
       } else {
         DescriptionString = ("e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"