Change ARM vfp assembly functions to use unified syntax.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@138332 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/arm/adddf3vfp.S b/lib/arm/adddf3vfp.S
index cced1e0..c90b0c2 100644
--- a/lib/arm/adddf3vfp.S
+++ b/lib/arm/adddf3vfp.S
@@ -15,10 +15,11 @@
 // Adds two double precision floating point numbers using the Darwin
 // calling convention where double arguments are passsed in GPR pairs
 //
+	.syntax unified
 	.align 2
 DEFINE_COMPILERRT_FUNCTION(__adddf3vfp)
-	fmdrr	d6, r0, r1		// move first param from r0/r1 pair into d6
-	fmdrr	d7, r2, r3		// move second param from r2/r3 pair into d7
-	faddd	d6, d6, d7		
-	fmrrd	r0, r1, d6		// move result back to r0/r1 pair
+	vmov	d6, r0, r1		// move first param from r0/r1 pair into d6
+	vmov	d7, r2, r3		// move second param from r2/r3 pair into d7
+	vadd.f64 d6, d6, d7		
+	vmov	r0, r1, d6		// move result back to r0/r1 pair
 	bx	lr