add arm tests (dlang#16563)

compiler/test/runnable/arm.d

@@ -0,0 +1,63 @@
+
+/**************************************
+ * Tests aimed at the Arm code generator, even though they also
+ * need to pass the x86 compiler.
+ */
+
+import core.stdc.stdio;
+
+/******************************************************/
+
+pragma(inline, false)
+{
+ulong movregconst64_0()  { return 0x123456789abcdef0; }
+ulong movregconst64_1()  { return 0x12345678; }
+ulong movregconst64_2()  { return 0xFFFF5678; }
+ulong movregconst64_3()  { return 0x1234FFFF; }
+ulong movregconst64_4()  { return 0xFFFF_FFFF_FFFF_1234; }
+ulong movregconst64_5()  { return 0xFFFF_FFFF_1234_FFFF; }
+ulong movregconst64_6()  { return 0xFFFF_1234_FFFF_FFFF; }
+ulong movregconst64_7()  { return 0x1234_FFFF_FFFF_FFFF; }
+ulong movregconst64_8()  { return 0x5555_5555_5555_5555; }
+ulong movregconst64_9()  { return 0xAAAA_AAAA_AAAA_AAAA; }
+ulong movregconst64_10() { return 0xFFFF_FFFF_FFFF_FFFE; }
+
+uint movregconst32_0() { return 0x12345678; }
+uint movregconst32_1() { return 0xFFFF5678; }
+uint movregconst32_2() { return 0x1234FFFF; }
+uint movregconst32_3() { return 0x55555555; }
+uint movregconst32_4() { return 0xAAAAAAAA; }
+uint movregconst32_5() { return 0xFFFFFFFF; }
+}
+
+void testmovregconst()
+{
+    assert(movregconst64_0() == 0x123456789abcdef0);
+    assert(movregconst64_1() == 0x12345678);
+    assert(movregconst64_2() == 0xFFFF5678);
+    assert(movregconst64_3() == 0x1234FFFF);
+    assert(movregconst64_4() == 0xFFFF_FFFF_FFFF_1234);
+    assert(movregconst64_5() == 0xFFFF_FFFF_1234_FFFF);
+    assert(movregconst64_6() == 0xFFFF_1234_FFFF_FFFF);
+    assert(movregconst64_7() == 0x1234_FFFF_FFFF_FFFF);
+    assert(movregconst64_8() == 0x5555_5555_5555_5555);
+    assert(movregconst64_9() == 0xAAAA_AAAA_AAAA_AAAA);
+    assert(movregconst64_10() == 0xFFFF_FFFF_FFFF_FFFE);
+
+    assert(movregconst32_0() == 0x12345678);
+    assert(movregconst32_1() == 0xFFFF5678);
+    assert(movregconst32_2() == 0x1234FFFF);
+    assert(movregconst32_3() == 0x55555555);
+    assert(movregconst32_4() == 0xAAAAAAAA);
+    assert(movregconst32_5() == 0xFFFFFFFF);
+}
+
+/******************************************************/
+
+int main()
+{
+    testmovregconst();
+
+    printf("Success\n");
+    return 0;
+}