Exercise the x86 and x86-64 FILD and FISTP instructions.

- Ensure the double- and quadword x87 (FPU) instructions for
  integer loading (resp. fildl and fildll) are properly
  generated by the x86 and x86-64 generators (resp.
  X86Assembler::filds/X86_64Assembler::filds and
  X86Assembler::fildl/X86_64Assembler::fildl).
- Ensure the double- and quadword x87 (FPU) instructions for
  integer storing & popping (resp. filstpl and fistpll) are
  properly generated by the x86 and x86-64 generators (resp.
  X86Assembler::fistps/X86_64Assembler::fistps and
  X86Assembler::fistpl/X86_64Assembler::fistpl).

These instructions can be used in the implementation of the
long-to-float and long-to-double Dex type conversions.

Change-Id: Iade52a9aee326d189d77d3dbd352a2b5dab52e46

1 files changed, 7 insertions, 0 deletions

diff --git a/compiler/utils/x86/assembler_x86.cc b/compiler/utils/x86/assembler_x86.cc
index 51cc7acbd0..329698ce1e 100644
--- a/compiler/utils/x86/assembler_x86.cc
+++ b/compiler/utils/x86/assembler_x86.cc
@@ -883,6 +883,13 @@ void X86Assembler::fildl(const Address& src) {
 }
 
 
+void X86Assembler::filds(const Address& src) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0xDB);
+  EmitOperand(0, src);
+}
+
+
 void X86Assembler::fincstp() {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xD9);