gallium: remove TGSI_OPCODE_SUB

It's redundant with the source modifier.

Reviewed-by: Nicolai Hähnle <[email protected]>

2 files changed, 0 insertions, 52 deletions

diff --git a/src/gallium/drivers/svga/svga_tgsi_insn.c b/src/gallium/drivers/svga/svga_tgsi_insn.c
index 47a0afc8ad0..0efd72d7992 100644
--- a/src/gallium/drivers/svga/svga_tgsi_insn.c
+++ b/src/gallium/drivers/svga/svga_tgsi_insn.c
@@ -1403,30 +1403,6 @@ emit_ssg(struct svga_shader_emitter *emit,
 
 
 /**
- * Translate/emit TGSI SUB instruction as:
- * ADD DST, SRC0, negate(SRC1)
- */
-static boolean
-emit_sub(struct svga_shader_emitter *emit,
-         const struct tgsi_full_instruction *insn)
-{
-   SVGA3dShaderDestToken dst = translate_dst_register( emit, insn, 0 );
-   struct src_register src0 = translate_src_register(
-      emit, &insn->Src[0] );
-   struct src_register src1 = translate_src_register(
-      emit, &insn->Src[1] );
-
-   src1 = negate(src1);
-
-   if (!submit_op2( emit, inst_token( SVGA3DOP_ADD ), dst,
-                    src0, src1 ))
-      return FALSE;
-
-   return TRUE;
-}
-
-
-/**
  * Translate/emit KILL_IF instruction (kill if any of X,Y,Z,W are negative).
  */
 static boolean
@@ -2989,9 +2965,6 @@ svga_emit_instruction(struct svga_shader_emitter *emit,
    case TGSI_OPCODE_SLE:
       return emit_select_op( emit, PIPE_FUNC_LEQUAL, insn );
 
-   case TGSI_OPCODE_SUB:
-      return emit_sub( emit, insn );
-
    case TGSI_OPCODE_POW:
       return emit_pow( emit, insn );
 
diff --git a/src/gallium/drivers/svga/svga_tgsi_vgpu10.c b/src/gallium/drivers/svga/svga_tgsi_vgpu10.c
index e7cfb404a2e..3131444e495 100644
--- a/src/gallium/drivers/svga/svga_tgsi_vgpu10.c
+++ b/src/gallium/drivers/svga/svga_tgsi_vgpu10.c
@@ -4715,29 +4715,6 @@ emit_issg(struct svga_shader_emitter_v10 *emit,
 
 
 /**
- * Emit code for TGSI_OPCODE_SUB instruction.
- */
-static boolean
-emit_sub(struct svga_shader_emitter_v10 *emit,
-         const struct tgsi_full_instruction *inst)
-{
-   /* dst = SUB(s0, s1):
-    *   dst = s0 - s1
-    * Translates into:
-    *   ADD dst, s0, neg(s1)
-    */
-   struct tgsi_full_src_register neg_src1 = negate_src(&inst->Src[1]);
-
-   /* ADD dst, s0, neg(s1) */
-   emit_instruction_op2(emit, VGPU10_OPCODE_ADD, &inst->Dst[0],
-                        &inst->Src[0], &neg_src1,
-                        inst->Instruction.Saturate);
-
-   return TRUE;
-}
-
-
-/**
  * Emit a comparison instruction.  The dest register will get
  * 0 or ~0 values depending on the outcome of comparing src0 to src1.
  */
@@ -5801,8 +5778,6 @@ emit_vgpu10_instruction(struct svga_shader_emitter_v10 *emit,
       return emit_ssg(emit, inst);
    case TGSI_OPCODE_ISSG:
       return emit_issg(emit, inst);
-   case TGSI_OPCODE_SUB:
-      return emit_sub(emit, inst);
    case TGSI_OPCODE_TEX:
       return emit_tex(emit, inst);
    case TGSI_OPCODE_TXP: