x64 support for d-to-i (truncated)

test/cctest/test-code-stubs-ia32.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <stdlib.h>
 
 #include <limits>
 
 #include "v8.h"
 
 #include "cctest.h"
 #include "code-stubs.h"
+#include "test-code-stubs.h"
 #include "factory.h"
 #include "macro-assembler.h"
 #include "platform.h"
 
-#if __GNUC__
-#define STDCALL  __attribute__((stdcall))
-#else
-#define STDCALL  __stdcall
-#endif
-
 using namespace v8::internal;
 
-
-typedef int32_t STDCALL ConvertDToIFuncType(double input);
-typedef ConvertDToIFuncType* ConvertDToIFunc;
-
-
-int STDCALL ConvertDToICVersion(double d) {
-  Address double_ptr = reinterpret_cast<Address>(&d);
-  uint32_t exponent_bits = Memory::uint32_at(double_ptr + kDoubleSize / 2);
-  int32_t shifted_mask = static_cast<int32_t>(Double::kExponentMask >> 32);
-  int32_t exponent = (((exponent_bits & shifted_mask) >>
-                       (Double::kPhysicalSignificandSize - 32)) -
-                      HeapNumber::kExponentBias);
-  uint32_t unsigned_exponent = static_cast<uint32_t>(exponent);
-  int result = 0;
-  uint32_t max_exponent =
-    static_cast<uint32_t>(Double::kPhysicalSignificandSize);
-  if (unsigned_exponent >= max_exponent) {
-    if ((exponent - Double::kPhysicalSignificandSize) < 32) {
-      result = Memory::uint32_at(double_ptr) <<
-        (exponent - Double::kPhysicalSignificandSize);
-    }
-  } else {
-    uint64_t big_result =
-        (BitCast<uint64_t>(d) & Double::kSignificandMask) | Double::kHiddenBit;
-    big_result = big_result >> (Double::kPhysicalSignificandSize - exponent);
-    result = static_cast<uint32_t>(big_result);
-  }
-  if (static_cast<int32_t>(exponent_bits) < 0) {
-    return (0 - result);
-  } else {
-    return result;
-  }
-}
-
-
-void RunOneTruncationTestWithTest(ConvertDToIFunc func,
-                                  double from,
-                                  double raw) {
-  uint64_t to = static_cast<int64_t>(raw);
-  int result = (*func)(from);
-  CHECK_EQ(static_cast<int>(to), result);
-}
-
-
-// #define NaN and Infinity so that it's possible to cut-and-paste these tests
-// directly to a .js file and run them.
-#define NaN (OS::nan_value())
-#define Infinity (std::numeric_limits<double>::infinity())
-#define RunOneTruncationTest(p1, p2) RunOneTruncationTestWithTest(func, p1, p2)
-
-void RunAllTruncationTests(ConvertDToIFunc func) {
-  RunOneTruncationTest(0, 0);
-  RunOneTruncationTest(0.5, 0);
-  RunOneTruncationTest(-0.5, 0);
-  RunOneTruncationTest(1.5, 1);
-  RunOneTruncationTest(-1.5, -1);
-  RunOneTruncationTest(5.5, 5);
-  RunOneTruncationTest(-5.0, -5);
-  RunOneTruncationTest(NaN, 0);
-  RunOneTruncationTest(Infinity, 0);
-  RunOneTruncationTest(-NaN, 0);
-  RunOneTruncationTest(-Infinity, 0);
-
-  RunOneTruncationTest(4.5036e+15, 0x1635E000);
-  RunOneTruncationTest(-4.5036e+15, -372629504);
-
-  RunOneTruncationTest(4503603922337791.0, -1);
-  RunOneTruncationTest(-4503603922337791.0, 1);
-  RunOneTruncationTest(4503601774854143.0, 2147483647);
-  RunOneTruncationTest(-4503601774854143.0, -2147483647);
-  RunOneTruncationTest(9007207844675582.0, -2);
-  RunOneTruncationTest(-9007207844675582.0, 2);
-  RunOneTruncationTest(2.4178527921507624e+24, -536870912);
-  RunOneTruncationTest(-2.4178527921507624e+24, 536870912);
-  RunOneTruncationTest(2.417853945072267e+24, -536870912);
-  RunOneTruncationTest(-2.417853945072267e+24, 536870912);
-
-  RunOneTruncationTest(4.8357055843015248e+24, -1073741824);
-  RunOneTruncationTest(-4.8357055843015248e+24, 1073741824);
-  RunOneTruncationTest(4.8357078901445341e+24, -1073741824);
-  RunOneTruncationTest(-4.8357078901445341e+24, 1073741824);
-
-  RunOneTruncationTest(9.6714111686030497e+24, -2147483648.0);
-  RunOneTruncationTest(-9.6714111686030497e+24, -2147483648.0);
-  RunOneTruncationTest(9.6714157802890681e+24, -2147483648.0);
-  RunOneTruncationTest(-9.6714157802890681e+24, -2147483648.0);
-}
-
-#undef NaN
-#undef Infinity
-#undef RunOneTruncationTest
-
 #define __ assm.
 
 ConvertDToIFunc MakeConvertDToIFuncTrampoline(Isolate* isolate,
                                               Register source_reg,
                                               Register destination_reg) {
   // Allocate an executable page of memory.
   size_t actual_size;
   byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
                                                    &actual_size,
                                                    true));
@@ skipping 119 matching lines @@
   RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esi, edx));
   RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esi, edi));
   RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, esi, esi));
   RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, eax));
   RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, ebx));
   RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, ecx));
   RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, edx));
   RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, edi));
   RunAllTruncationTests(MakeConvertDToIFuncTrampoline(isolate, edi, esi));
 }