[turbofan] Support unboxed float and double stack parameters and add tests.

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

Index: src/compiler/arm/code-generator-arm.cc
diff --git a/src/compiler/arm/code-generator-arm.cc b/src/compiler/arm/code-generator-arm.cc
index e9a4a5aaf6f4fa7a348a8da57b6d484c0f350fef..722f5378729daec6352b00d99a2cc098d75cbbcf 100644
--- a/src/compiler/arm/code-generator-arm.cc
+++ b/src/compiler/arm/code-generator-arm.cc
@@ -814,7 +814,12 @@ void CodeGenerator::AssembleArchInstruction(Instruction* instr) {
       break;
     }
     case kArmPush:
-      __ Push(i.InputRegister(0));
+      if (instr->InputAt(0)->IsDoubleRegister()) {
+        __ vstr(i.InputDoubleRegister(0), MemOperand(sp, -kDoubleSize));
+        __ sub(sp, sp, Operand(kDoubleSize));
+      } else {
+        __ Push(i.InputRegister(0));
+      }
       DCHECK_EQ(LeaveCC, i.OutputSBit());
       break;
     case kArmPoke: {