Add floor, ceil, round (truncate) instructions for ia32, x64 (if SSE4.1) and

src/compiler/arm64/code-generator-arm64.cc

Index: src/compiler/arm64/code-generator-arm64.cc
diff --git a/src/compiler/arm64/code-generator-arm64.cc b/src/compiler/arm64/code-generator-arm64.cc
index c3a4f408568716f2ffb0b0fefe3ece17ec6e10cb..38c6531c5f3a4f4a49efb136ebe347bc3e3a068a 100644
--- a/src/compiler/arm64/code-generator-arm64.cc
+++ b/src/compiler/arm64/code-generator-arm64.cc
@@ -222,6 +222,18 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
     case kArchTruncateDoubleToI:
       __ TruncateDoubleToI(i.OutputRegister(), i.InputDoubleRegister(0));
       break;
+    case kArm64Float64Ceil:
+      __ Frintp(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
+      break;
+    case kArm64Float64Floor:
+      __ Frintm(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
+      break;
+    case kArm64Float64RoundTruncate:
+      __ Frintz(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
+      break;
+    case kArm64Float64RoundTiesAway:
+      __ Frinta(i.OutputDoubleRegister(), i.InputDoubleRegister(0));
+      break;
     case kArm64Add:
       __ Add(i.OutputRegister(), i.InputRegister(0), i.InputOperand2_64(1));
       break;