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diff src/cpu/x86/vm/x86_32.ad @ 3839:3d42f82cd811

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7063628: Use cbcond on T4 Summary: Add new short branch instruction to Hotspot sparc assembler. Reviewed-by: never, twisti, jrose
author kvn
date Thu, 21 Jul 2011 11:25:07 -0700
parents bad7ecd0b6ed
children c7b60b601eb4
line wrap: on
line diff
--- a/src/cpu/x86/vm/x86_32.ad	Thu Jul 21 08:38:25 2011 -0700
+++ b/src/cpu/x86/vm/x86_32.ad	Thu Jul 21 11:25:07 2011 -0700
@@ -1713,14 +1713,14 @@
     else                               emit_d32(cbuf,con);
   %}
 
-  enc_class Lbl (label labl) %{ // JMP, CALL
+  enc_class Lbl (label labl) %{ // GOTO
     Label *l = $labl$$label;
-    emit_d32(cbuf, l ? (l->loc_pos() - (cbuf.insts_size()+4)) : 0);
-  %}
-
-  enc_class LblShort (label labl) %{ // JMP, CALL
+    emit_d32(cbuf, (l->loc_pos() - (cbuf.insts_size()+4)));
+  %}
+
+  enc_class LblShort (label labl) %{ // GOTO
     Label *l = $labl$$label;
-    int disp = l ? (l->loc_pos() - (cbuf.insts_size()+1)) : 0;
+    int disp = l->loc_pos() - (cbuf.insts_size()+1);
     assert(-128 <= disp && disp <= 127, "Displacement too large for short jmp");
     emit_d8(cbuf, disp);
   %}
@@ -1751,13 +1751,13 @@
     Label *l = $labl$$label;
     $$$emit8$primary;
     emit_cc(cbuf, $secondary, $cop$$cmpcode);
-    emit_d32(cbuf, l ? (l->loc_pos() - (cbuf.insts_size()+4)) : 0);
+    emit_d32(cbuf, (l->loc_pos() - (cbuf.insts_size()+4)));
   %}
 
   enc_class JccShort (cmpOp cop, label labl) %{    // JCC
     Label *l = $labl$$label;
     emit_cc(cbuf, $primary, $cop$$cmpcode);
-    int disp = l ? (l->loc_pos() - (cbuf.insts_size()+1)) : 0;
+    int disp = l->loc_pos() - (cbuf.insts_size()+1);
     assert(-128 <= disp && disp <= 127, "Displacement too large for short jmp");
     emit_d8(cbuf, disp);
   %}
@@ -13172,7 +13172,7 @@
     bool ok = false;
     if ($cop$$cmpcode == Assembler::notEqual) {
        // the two jumps 6 bytes apart so the jump distances are too
-       parity_disp = l ? (l->loc_pos() - (cbuf.insts_size() + 4)) : 0;
+       parity_disp = l->loc_pos() - (cbuf.insts_size() + 4);
     } else if ($cop$$cmpcode == Assembler::equal) {
        parity_disp = 6;
        ok = true;
@@ -13182,7 +13182,7 @@
     emit_d32(cbuf, parity_disp);
     $$$emit8$primary;
     emit_cc(cbuf, $secondary, $cop$$cmpcode);
-    int disp = l ? (l->loc_pos() - (cbuf.insts_size() + 4)) : 0;
+    int disp = l->loc_pos() - (cbuf.insts_size() + 4);
     emit_d32(cbuf, disp);
   %}
   ins_pipe(pipe_jcc);
@@ -13368,7 +13368,7 @@
     emit_cc(cbuf, $primary, Assembler::parity);
     int parity_disp = -1;
     if ($cop$$cmpcode == Assembler::notEqual) {
-      parity_disp = l ? (l->loc_pos() - (cbuf.insts_size() + 1)) : 0;
+      parity_disp = l->loc_pos() - (cbuf.insts_size() + 1);
     } else if ($cop$$cmpcode == Assembler::equal) {
       parity_disp = 2;
     } else {
@@ -13376,7 +13376,7 @@
     }
     emit_d8(cbuf, parity_disp);
     emit_cc(cbuf, $primary, $cop$$cmpcode);
-    int disp = l ? (l->loc_pos() - (cbuf.insts_size() + 1)) : 0;
+    int disp = l->loc_pos() - (cbuf.insts_size() + 1);
     emit_d8(cbuf, disp);
     assert(-128 <= disp && disp <= 127, "Displacement too large for short jmp");
     assert(-128 <= parity_disp && parity_disp <= 127, "Displacement too large for short jmp");