src/cpu/x86/vm/x86_64.ad

rev 767 : [mq]: 6814842

*** 6457,6466 ****
--- 6457,6478 ----
    %}
  
    ins_pipe(ialu_reg_mem);
  %}
  
+ // Load Short (16 bit signed) to Byte (8 bit signed)
+ instruct loadS2B(rRegI dst, memory mem, immI_24 twentyfour) %{
+   match(Set dst (RShiftI (LShiftI (LoadS mem) twentyfour) twentyfour));
+ 
+   ins_cost(125);
+   format %{ "movsbl $dst, $mem\t# short -> byte" %}
+   ins_encode %{
+     __ movsbl($dst$$Register, $mem$$Address);
+   %}
+   ins_pipe(ialu_reg_mem);
+ %}
+ 
  // Load Short (16 bit signed) into Long Register
  instruct loadS2L(rRegL dst, memory mem)
  %{
    match(Set dst (ConvI2L (LoadS mem)));
  
*** 6487,6496 ****
--- 6499,6520 ----
    %}
  
    ins_pipe(ialu_reg_mem);
  %}
  
+ // Load Unsigned Short/Char (16 bit UNsigned) to Byte (8 bit signed)
+ instruct loadUS2B(rRegI dst, memory mem, immI_24 twentyfour) %{
+   match(Set dst (RShiftI (LShiftI (LoadUS mem) twentyfour) twentyfour));
+ 
+   ins_cost(125);
+   format %{ "movsbl $dst, $mem\t# ushort -> byte" %}
+   ins_encode %{
+     __ movsbl($dst$$Register, $mem$$Address);
+   %}
+   ins_pipe(ialu_reg_mem);
+ %}
+ 
  // Load Unsigned Short/Char (16 bit UNsigned) into Long Register
  instruct loadUS2L(rRegL dst, memory mem)
  %{
    match(Set dst (ConvI2L (LoadUS mem)));
  
*** 6517,6526 ****
--- 6541,6598 ----
    %}
  
    ins_pipe(ialu_reg_mem);
  %}
  
+ // Load Integer (32 bit signed) to Byte (8 bit signed)
+ instruct loadI2B(rRegI dst, memory mem, immI_24 twentyfour) %{
+   match(Set dst (RShiftI (LShiftI (LoadI mem) twentyfour) twentyfour));
+ 
+   ins_cost(125);
+   format %{ "movsbl  $dst, $mem\t# int -> byte" %}
+   ins_encode %{
+     __ movsbl($dst$$Register, $mem$$Address);
+   %}
+   ins_pipe(ialu_reg_mem);
+ %}
+ 
+ // Load Integer (32 bit signed) to Unsigned Byte (8 bit UNsigned)
+ instruct loadI2UB(rRegI dst, memory mem, immI_255 mask) %{
+   match(Set dst (AndI (LoadI mem) mask));
+ 
+   ins_cost(125);
+   format %{ "movzbl  $dst, $mem\t# int -> ubyte" %}
+   ins_encode %{
+     __ movzbl($dst$$Register, $mem$$Address);
+   %}
+   ins_pipe(ialu_reg_mem);
+ %}
+ 
+ // Load Integer (32 bit signed) to Short (16 bit signed)
+ instruct loadI2S(rRegI dst, memory mem, immI_16 sixteen) %{
+   match(Set dst (RShiftI (LShiftI (LoadI mem) sixteen) sixteen));
+ 
+   ins_cost(125);
+   format %{ "movswl  $dst, $mem\t# int -> short" %}
+   ins_encode %{
+     __ movswl($dst$$Register, $mem$$Address);
+   %}
+   ins_pipe(ialu_reg_mem);
+ %}
+ 
+ // Load Integer (32 bit signed) to Unsigned Short/Char (16 bit UNsigned)
+ instruct loadI2US(rRegI dst, memory mem, immI_65535 mask) %{
+   match(Set dst (AndI (LoadI mem) mask));
+ 
+   ins_cost(125);
+   format %{ "movzwl  $dst, $mem\t# int -> ushort/char" %}
+   ins_encode %{
+     __ movzwl($dst$$Register, $mem$$Address);
+   %}
+   ins_pipe(ialu_reg_mem);
+ %}
+ 
  // Load Integer into Long Register
  instruct loadI2L(rRegL dst, memory mem)
  %{
    match(Set dst (ConvI2L (LoadI mem)));