gallium/docs: Drop BGNFOR, ENDFOR, REP, and ENDREP opcodes.

src/gallium/docs/source/tgsi.rst

@@ -786,33 +786,6 @@ This instruction replicates its result.
   TBD
 
 
-.. opcode:: BGNFOR - Begin a For-Loop
-
-  dst.x = floor(src.x)
-  dst.y = floor(src.y)
-  dst.z = floor(src.z)
-
-  if (dst.y <= 0)
-    pc = [matching ENDFOR] + 1
-  endif
-
-  Note: The destination must be a loop register.
-        The source must be a constant register.
-
-.. note::
-
-   Considered for cleanup.
-
-.. note::
-
-   Considered for removal.
-
-
-.. opcode:: REP - Repeat
-
-  TBD
-
-
 .. opcode:: ELSE - Else
 
   TBD
@@ -823,30 +796,6 @@ This instruction replicates its result.
   TBD
 
 
-.. opcode:: ENDFOR - End a For-Loop
-
-  dst.x = dst.x + dst.z
-  dst.y = dst.y - 1.0
-
-  if (dst.y > 0)
-    pc = [matching BGNFOR instruction] + 1
-  endif
-
-  Note: The destination must be a loop register.
-
-.. note::
-
-   Considered for cleanup.
-
-.. note::
-
-   Considered for removal.
-
-.. opcode:: ENDREP - End Repeat
-
-  TBD
-
-
 .. opcode:: PUSHA - Push Address Register On Stack
 
   push(src.x)