Make use of VFP to convert/write 32bits int to heapnumbers. Extended...

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
===================================================================
--- src/arm/assembler-arm.cc	(revision 4988)
+++ src/arm/assembler-arm.cc	(working copy)
@@ -1763,8 +1763,16 @@
   // Vdst(15-12) | 1011(11-8) | offset
   ASSERT(CpuFeatures::IsEnabled(VFP3));
   ASSERT(offset % 4 == 0);
-  ASSERT((offset / 4) < 256);
-  emit(cond | 0xD9*B20 | base.code()*B16 | dst.code()*B12 |
+  ASSERT(((offset / 4) < 256) && ((-offset / 4) < 256));
+
+  // Handle negative offsets.
+  int sign = 0xD9;
+  if (offset < 0) {
+    offset = -offset;
+    sign = 0xD1;
+  }
+
+  emit(cond | sign*B20 | base.code()*B16 | dst.code()*B12 |
        0xB*B8 | ((offset / 4) & 255));
 }
 
@@ -1779,8 +1787,16 @@
   // Vdst(15-12) | 1010(11-8) | offset
   ASSERT(CpuFeatures::IsEnabled(VFP3));
   ASSERT(offset % 4 == 0);
-  ASSERT((offset / 4) < 256);
-  emit(cond | 0xD9*B20 | base.code()*B16 | dst.code()*B12 |
+  ASSERT(((offset / 4) < 256) && ((-offset / 4) < 256));
+
+  // Handle negative offsets.
+  int sign = 0xD9;
+  if (offset < 0) {
+    offset = -offset;
+    sign = 0xD1;
+  }
+
+  emit(cond | sign*B20 | base.code()*B16 | dst.code()*B12 |
        0xA*B8 | ((offset / 4) & 255));
 }
 
@@ -1795,8 +1811,16 @@
   // Vsrc(15-12) | 1011(11-8) | (offset/4)
   ASSERT(CpuFeatures::IsEnabled(VFP3));
   ASSERT(offset % 4 == 0);
-  ASSERT((offset / 4) < 256);
-  emit(cond | 0xD8*B20 | base.code()*B16 | src.code()*B12 |
+  ASSERT(((offset / 4) < 256) && ((-offset / 4) < 256));
+
+  // Handle negative offsets.
+  int sign = 0xD8;
+  if (offset < 0) {
+    offset = -offset;
+    sign = 0xD0;
+  }
+
+  emit(cond | sign*B20 | base.code()*B16 | src.code()*B12 |
        0xB*B8 | ((offset / 4) & 255));
 }