src/hotspot/cpu/aarch64/aarch64.ad

*** 13576,13585 ****
--- 13576,13631 ----
      }
    %}
    ins_pipe(fp_uop_d);
  %}
  
+ instruct signumD_reg(vRegD dst, vRegD src, vRegD tmp, vRegD one) %{
+   match(Set dst (SignumD src));
+   effect(TEMP_DEF dst, TEMP tmp, TEMP one);
+   format %{ "signumD  $dst, $src" %}
+   ins_encode %{
+     FloatRegister src = as_FloatRegister($src$$reg),
+                   dst = as_FloatRegister($dst$$reg),
+                   tmp = as_FloatRegister($tmp$$reg),
+                   one = as_FloatRegister($one$$reg);
+     __ fmovd(tmp, 0.0d);
+     __ fmovd(one, 1.0d);
+     __ facgtd(dst, src, tmp); // dst=0 for +-0.0 and NaN. 0xFFF..F otherwise
+     __ ushrd(dst, dst, 1);    // dst=0 for +-0.0 and NaN. 0x7FF..F otherwise
+     // Bit selection instruction gets bit from "one" for each enabled bit in
+     // "dst", otherwise gets a bit from "src". For "src" that contains +-0.0 or
+     // NaN the whole "src" will be copied because "dst" is zero. For all other
+     // "src" values dst is 0x7FF..F, which means only the sign bit is copied
+     // from "src", and all other bits are copied from 1.0.
+     __ bsl(dst, __ T8B, one, src);
+   %}
+   ins_pipe(fp_uop_d);
+ %}
+ 
+ instruct signumF_reg(vRegF dst, vRegF src, vRegF tmp, vRegF one) %{
+   match(Set dst (SignumF src));
+   effect(TEMP_DEF dst, USE src, TEMP tmp, TEMP one);
+   format %{ "signumF  $dst, $src" %}
+   ins_encode %{
+     FloatRegister src = as_FloatRegister($src$$reg),
+                   dst = as_FloatRegister($dst$$reg),
+                   tmp = as_FloatRegister($tmp$$reg),
+                   one = as_FloatRegister($one$$reg);
+     __ fmovs(tmp, 0.0f);
+     __ fmovs(one, 1.0f);
+     __ facgts(dst, src, tmp);     // dst=0 for +-0.0 and NaN. 0xFFF..F otherwise
+     __ ushr(dst, __ T2S, dst, 1); // dst=0 for +-0.0 and NaN. 0x7FF..F otherwise
+     // Bit selection instruction gets bit from "one" for each enabled bit in
+     // "dst", otherwise gets a bit from "src". For "src" that contains +-0.0 or
+     // NaN the whole "src" will be copied because "dst" is zero. For all other
+     // "src" values dst is 0x7FF..F, which means only the sign bit is copied
+     // from "src", and all other bits are copied from 1.0.
+     __ bsl(dst, __ T8B, one, src);
+   %}
+   ins_pipe(fp_uop_d);
+ %}
+ 
  // ============================================================================
  // Logical Instructions
  
  // Integer Logical Instructions