Implement bigint shift intrinsics on IA32.

runtime/vm/assembler_x64_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/os.h"
 #include "vm/unit_test.h"
@@ skipping 1342 matching lines @@
   __ movl(RAX, Immediate(0));
   __ movl(Address(RAX, 0), RAX);
   __ Bind(&donetest13a);
 
   {
     Label donetest15a;
     const int32_t left = 0xff000000;
     const int32_t right = 0xffffffff;
     const int32_t shifted = 0xf0000003;
     __ movl(RDX, Immediate(left));
-    __ movl(RAX, Immediate(right));
+    __ movl(R8, Immediate(right));
     __ movl(RCX, Immediate(2));
     __ shll(RDX, RCX);  // RDX = 0xff000000 << 2 == 0xfc000000
-    __ shldl(RDX, RAX, Immediate(2));
+    __ shldl(RDX, R8, Immediate(2));
     // RDX = high32(0xfc000000:0xffffffff << 2) == 0xf0000003
     __ cmpl(RDX, Immediate(shifted));
     __ j(EQUAL, &donetest15a);
     __ int3();
     __ Bind(&donetest15a);
   }
 
   {
     Label donetest15b;
     const int64_t left = 0xff00000000000000;
     const int64_t right = 0xffffffffffffffff;
     const int64_t shifted = 0xf000000000000003;
     __ movq(RDX, Immediate(left));
-    __ movq(RAX, Immediate(right));
+    __ movq(R8, Immediate(right));
     __ movq(RCX, Immediate(2));
     __ shlq(RDX, RCX);  // RDX = 0xff00000000000000 << 2 == 0xfc00000000000000
-    __ shldq(RDX, RAX, Immediate(2));
+    __ shldq(RDX, R8, Immediate(2));
     // RDX = high64(0xfc00000000000000:0xffffffffffffffff << 2)
     //     == 0xf000000000000003
     __ cmpq(RDX, Immediate(shifted));
     __ j(EQUAL, &donetest15b);
     __ int3();
     __ Bind(&donetest15b);
   }
 
   {
     Label donetest15c;
     const int64_t left = 0xff00000000000000;
     const int64_t right = 0xffffffffffffffff;
     const int64_t shifted = 0xf000000000000003;
     __ movq(RDX, Immediate(left));
-    __ movq(RAX, Immediate(right));
+    __ movq(R8, Immediate(right));
     __ movq(RCX, Immediate(2));
     __ shlq(RDX, RCX);  // RDX = 0xff00000000000000 << 2 == 0xfc00000000000000
-    __ shldq(RDX, RAX, RCX);
+    __ shldq(RDX, R8, RCX);
     // RDX = high64(0xfc00000000000000:0xffffffffffffffff << 2)
     //     == 0xf000000000000003
     __ cmpq(RDX, Immediate(shifted));
     __ j(EQUAL, &donetest15c);
     __ int3();
     __ Bind(&donetest15c);
   }
 
   {
     Label donetest15d;
     const int64_t left = 0xff00000000000000;
     const int64_t right = 0xffffffffffffffff;
     const int64_t shifted = 0xcff0000000000000;
     __ movq(RDX, Immediate(left));
-    __ movq(RAX, Immediate(right));
+    __ movq(R8, Immediate(right));
     __ movq(RCX, Immediate(2));
     __ shrq(RDX, RCX);  // RDX = 0xff00000000000000 >> 2 == 0x3fc0000000000000
-    __ shrdq(RDX, RAX, RCX);
+    __ shrdq(RDX, R8, RCX);
     // RDX = low64(0xffffffffffffffff:0x3fc0000000000000 >> 2)
     //     == 0xcff0000000000000
     __ cmpq(RDX, Immediate(shifted));
     __ j(EQUAL, &donetest15d);
     __ int3();
     __ Bind(&donetest15d);
   }
 
   __ movl(RAX, Immediate(0));
   __ ret();
@@ skipping 2209 matching lines @@
   EXPECT_EQ(ICData::kInt64RangeBit, range_of(Integer::New(kMaxInt64)));
   EXPECT_EQ(ICData::kInt64RangeBit, range_of(Integer::New(kMinInt64)));
 
   EXPECT_EQ(0, range_of(Bool::True().raw()));
 }
 
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64