ARM: Add instruction VFPCompareAndSetFlags to macro assembler

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
===================================================================
--- src/arm/macro-assembler-arm.h	(revision 6241)
+++ src/arm/macro-assembler-arm.h	(working copy)
@@ -582,6 +582,21 @@
                          Register source,
                          Register scratch);
 
+  void VFPCompareAndSetFlags(const DwVfpRegister src1,

[Rodolph Perfetta, 2011/01/10 11:24:10]

Since the instruction sets the flags, the s parameter is meaningless. In fact
the s parameter in the vcmp instruction is also superfluous and probably should
be removed, it is not present in the instruction encoding.

[Søren Thygesen Gjesse, 2011/01/10 12:36:01]

Done.

+                             const DwVfpRegister src2,
+                             const SBit s = LeaveCC,
+                             const Condition cond = al) {
+    vcmp(src1, src2, s, cond);
+    vmrs(pc);

[Rodolph Perfetta, 2011/01/10 11:24:10]

vmrs should be conditional too.

[Søren Thygesen Gjesse, 2011/01/10 12:36:01]

Done.

+  }
+  void VFPCompareAndSetFlags(const DwVfpRegister src1,

[Rodolph Perfetta, 2011/01/10 11:24:10]

As above.

[Søren Thygesen Gjesse, 2011/01/10 12:36:01]

Done.

+                             const double src2,
+                             const SBit s = LeaveCC,
+                             const Condition cond = al) {
+    vcmp(src1, src2, s, cond);
+    vmrs(pc);
+  }
+
   // ---------------------------------------------------------------------------
   // Runtime calls