ARM: Avoid VMSR instruction when converting to clamped uint8

test/cctest/test-assembler-arm.cc

Index: test/cctest/test-assembler-arm.cc
diff --git a/test/cctest/test-assembler-arm.cc b/test/cctest/test-assembler-arm.cc
index 9c1c04fe338f52ad478bd61ec306736c5c39ed46..986e4597a490e652014a77fb48cf19daeb8734c6 100644
--- a/test/cctest/test-assembler-arm.cc
+++ b/test/cctest/test-assembler-arm.cc
@@ -229,6 +229,7 @@ TEST(4) {
     double h;
     int i;
     double j;
+    unsigned int k;
     double m;
     double n;
     float x;
@@ -292,11 +293,16 @@ TEST(4) {
     __ vstr(d4, r4, OFFSET_OF(T, f));
 
     // Convert from fixed point to floating point.
-    __ mov(lr, Operand(1234));
+    __ mov(lr, Operand(2468));
     __ vmov(s8, lr);
-    __ vcvt_f64_s32(d4, 1);
+    __ vcvt_f64_s32(d4, 2);
     __ vstr(d4, r4, OFFSET_OF(T, j));
 
+    // Convert from floating point to fixed point.
+    __ vmov(d4, 42.25);
+    __ vcvt_u32_f64(d4, 3);
+    __ vstr(d4, r4, OFFSET_OF(T, k));
+
     // Test vabs.
     __ vldr(d1, r4, OFFSET_OF(T, g));
     __ vabs(d0, d1);
@@ -336,6 +342,7 @@ TEST(4) {
     t.h = 31415926.5;
     t.i = 0;
     t.j = 0;
+    t.k = 0;
     t.m = -2718.2818;
     t.n = 123.456;
     t.x = 4.5;
@@ -350,6 +357,7 @@ TEST(4) {
     CHECK_EQ(2718.2818, t.g);
     CHECK_EQ(31415926.5, t.h);
     CHECK_EQ(617.0, t.j);
+    CHECK_EQ(338, t.k);
     CHECK_EQ(42.0, t.f);
     CHECK_EQ(1.0, t.e);
     CHECK_EQ(1.000000059604644775390625, t.d);