[turbofan] Implemented the optional Float32RoundTruncate operator.

src/arm/assembler-arm.h

Index: src/arm/assembler-arm.h
diff --git a/src/arm/assembler-arm.h b/src/arm/assembler-arm.h
index e5b6bb1b3e579399d003736207853b8532784d89..b629dcea1b54aae14bff848829c9bcdaaed46722 100644
--- a/src/arm/assembler-arm.h
+++ b/src/arm/assembler-arm.h
@@ -1211,12 +1211,16 @@ class Assembler : public AssemblerBase {
              const Condition cond = al);
 
   // ARMv8 rounding instructions.
+  void vrinta(const SwVfpRegister dst, const SwVfpRegister src);
   void vrinta(const DwVfpRegister dst, const DwVfpRegister src);
+  void vrintn(const SwVfpRegister dst, const SwVfpRegister src);
   void vrintn(const DwVfpRegister dst, const DwVfpRegister src);
   void vrintm(const SwVfpRegister dst, const SwVfpRegister src);
   void vrintm(const DwVfpRegister dst, const DwVfpRegister src);
   void vrintp(const SwVfpRegister dst, const SwVfpRegister src);
   void vrintp(const DwVfpRegister dst, const DwVfpRegister src);
+  void vrintz(const SwVfpRegister dst, const SwVfpRegister src,
+              const Condition cond = al);
   void vrintz(const DwVfpRegister dst, const DwVfpRegister src,
               const Condition cond = al);