gallium: remove TGSI_OPCODE_CLAMP

Not used and not widely supported. Use MIN+MAX instead.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

14 files changed, 5 insertions, 86 deletions

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_action.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_action.c
index e78cdb011a..dc6568a2d4 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_action.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_action.c
@@ -110,21 +110,6 @@ arr_emit(
 							bld_base->uint_bld.vec_type, "");
 }
 
-/* TGSI_OPCODE_CLAMP */
-static void
-clamp_emit(
-   const struct lp_build_tgsi_action * action,
-   struct lp_build_tgsi_context * bld_base,
-   struct lp_build_emit_data * emit_data)
-{
-   LLVMValueRef tmp;
-   tmp = lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_MAX,
-                                   emit_data->args[0],
-                                   emit_data->args[1]);
-   emit_data->output[emit_data->chan] = lp_build_emit_llvm_binary(bld_base,
-                                       TGSI_OPCODE_MIN, tmp, emit_data->args[2]);
-}
-
 /* DP* Helper */
 
 static void
@@ -1330,7 +1315,6 @@ lp_set_default_actions(struct lp_build_tgsi_context * bld_base)
 
    bld_base->op_actions[TGSI_OPCODE_ADD].emit = add_emit;
    bld_base->op_actions[TGSI_OPCODE_ARR].emit = arr_emit;
-   bld_base->op_actions[TGSI_OPCODE_CLAMP].emit = clamp_emit;
    bld_base->op_actions[TGSI_OPCODE_END].emit = end_emit;
    bld_base->op_actions[TGSI_OPCODE_FRC].emit = frc_emit;
    bld_base->op_actions[TGSI_OPCODE_LRP].emit = lrp_emit;
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_aos.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_aos.c
index 6c177b02cb..2bd42916e5 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_aos.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_aos.c
@@ -609,14 +609,6 @@ lp_emit_instruction_aos(
       dst0 = lp_build_sub(&bld->bld_base.base, src0, tmp0);
       break;
 
-   case TGSI_OPCODE_CLAMP:
-      src0 = lp_build_emit_fetch(&bld->bld_base, inst, 0, LP_CHAN_ALL);
-      src1 = lp_build_emit_fetch(&bld->bld_base, inst, 1, LP_CHAN_ALL);
-      src2 = lp_build_emit_fetch(&bld->bld_base, inst, 2, LP_CHAN_ALL);
-      tmp0 = lp_build_max(&bld->bld_base.base, src0, src1);
-      dst0 = lp_build_min(&bld->bld_base.base, tmp0, src2);
-      break;
-
    case TGSI_OPCODE_FLR:
       src0 = lp_build_emit_fetch(&bld->bld_base, inst, 0, LP_CHAN_ALL);
       dst0 = lp_build_floor(&bld->bld_base.base, src0);
diff --git a/src/gallium/auxiliary/nir/tgsi_to_nir.c b/src/gallium/auxiliary/nir/tgsi_to_nir.c
index f3e8700512..5de74e0c3c 100644
--- a/src/gallium/auxiliary/nir/tgsi_to_nir.c
+++ b/src/gallium/auxiliary/nir/tgsi_to_nir.c
@@ -986,12 +986,6 @@ ttn_sgt(nir_builder *b, nir_op op, nir_alu_dest dest, nir_ssa_def **src)
 }
 
 static void
-ttn_clamp(nir_builder *b, nir_op op, nir_alu_dest dest, nir_ssa_def **src)
-{
-   ttn_move_dest(b, dest, nir_fmin(b, nir_fmax(b, src[0], src[1]), src[2]));
-}
-
-static void
 ttn_xpd(nir_builder *b, nir_op op, nir_alu_dest dest, nir_ssa_def **src)
 {
    ttn_move_dest_masked(b, dest,
@@ -1539,7 +1533,6 @@ static const nir_op op_trans[TGSI_OPCODE_LAST] = {
    [TGSI_OPCODE_SQRT] = nir_op_fsqrt,
    [TGSI_OPCODE_DP2A] = 0,
    [TGSI_OPCODE_FRC] = nir_op_ffract,
-   [TGSI_OPCODE_CLAMP] = 0,
    [TGSI_OPCODE_FLR] = nir_op_ffloor,
    [TGSI_OPCODE_ROUND] = nir_op_fround_even,
    [TGSI_OPCODE_EX2] = nir_op_fexp2,
@@ -1765,10 +1758,6 @@ ttn_emit_instruction(struct ttn_compile *c)
       ttn_lit(b, op_trans[tgsi_op], dest, src);
       break;
 
-   case TGSI_OPCODE_CLAMP:
-      ttn_clamp(b, op_trans[tgsi_op], dest, src);
-      break;
-
    case TGSI_OPCODE_XPD:
       ttn_xpd(b, op_trans[tgsi_op], dest, src);
       break;
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index 2135ad103d..3c1530672f 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -127,18 +127,6 @@ micro_ceil(union tgsi_exec_channel *dst,
 }
 
 static void
-micro_clamp(union tgsi_exec_channel *dst,
-            const union tgsi_exec_channel *src0,
-            const union tgsi_exec_channel *src1,
-            const union tgsi_exec_channel *src2)
-{
-   dst->f[0] = src0->f[0] < src1->f[0] ? src1->f[0] : src0->f[0] > src2->f[0] ? src2->f[0] : src0->f[0];
-   dst->f[1] = src0->f[1] < src1->f[1] ? src1->f[1] : src0->f[1] > src2->f[1] ? src2->f[1] : src0->f[1];
-   dst->f[2] = src0->f[2] < src1->f[2] ? src1->f[2] : src0->f[2] > src2->f[2] ? src2->f[2] : src0->f[2];
-   dst->f[3] = src0->f[3] < src1->f[3] ? src1->f[3] : src0->f[3] > src2->f[3] ? src2->f[3] : src0->f[3];
-}
-
-static void
 micro_cmp(union tgsi_exec_channel *dst,
           const union tgsi_exec_channel *src0,
           const union tgsi_exec_channel *src1,
@@ -5234,10 +5222,6 @@ exec_instruction(
       exec_vector_unary(mach, inst, micro_frc, TGSI_EXEC_DATA_FLOAT, TGSI_EXEC_DATA_FLOAT);
       break;
 
-   case TGSI_OPCODE_CLAMP:
-      exec_vector_trinary(mach, inst, micro_clamp, TGSI_EXEC_DATA_FLOAT, TGSI_EXEC_DATA_FLOAT);
-      break;
-
    case TGSI_OPCODE_FLR:
       exec_vector_unary(mach, inst, micro_flr, TGSI_EXEC_DATA_FLOAT, TGSI_EXEC_DATA_FLOAT);
       break;
diff --git a/src/gallium/auxiliary/tgsi/tgsi_info.c b/src/gallium/auxiliary/tgsi/tgsi_info.c
index 4509b955c1..f8bedeee30 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_info.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_info.c
@@ -62,7 +62,7 @@ static const struct tgsi_opcode_info opcode_info[TGSI_OPCODE_LAST] =
    { 1, 1, 0, 0, 0, 0, 0, COMP, "F2U64", TGSI_OPCODE_F2U64 },
    { 1, 1, 0, 0, 0, 0, 0, COMP, "F2I64", TGSI_OPCODE_F2I64 },
    { 1, 1, 0, 0, 0, 0, 0, COMP, "FRC", TGSI_OPCODE_FRC },
-   { 1, 3, 0, 0, 0, 0, 0, COMP, "CLAMP", TGSI_OPCODE_CLAMP },
+   { 1, 3, 0, 0, 0, 0, 0, COMP, "", 25 }, /* removed */
    { 1, 1, 0, 0, 0, 0, 0, COMP, "FLR", TGSI_OPCODE_FLR },
    { 1, 1, 0, 0, 0, 0, 0, COMP, "ROUND", TGSI_OPCODE_ROUND },
    { 1, 1, 0, 0, 0, 0, 0, REPL, "EX2", TGSI_OPCODE_EX2 },
diff --git a/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h b/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h
index 13c443fa84..ab73fabaca 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_opcode_tmp.h
@@ -77,7 +77,6 @@ OP13(LRP)
 OP11(SQRT)
 OP13(DP2A)
 OP11(FRC)
-OP13(CLAMP)
 OP11(FLR)
 OP11(ROUND)
 OP11(EX2)
diff --git a/src/gallium/auxiliary/tgsi/tgsi_util.c b/src/gallium/auxiliary/tgsi/tgsi_util.c
index 4a6a2ae048..f6d2d3f4c3 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_util.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_util.c
@@ -196,7 +196,6 @@ tgsi_util_get_inst_usage_mask(const struct tgsi_full_instruction *inst,
    case TGSI_OPCODE_FMA:
    case TGSI_OPCODE_FRC:
    case TGSI_OPCODE_CEIL:
-   case TGSI_OPCODE_CLAMP:
    case TGSI_OPCODE_FLR:
    case TGSI_OPCODE_ROUND:
    case TGSI_OPCODE_POW:
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index 9f66fddedc..c296447b5c 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -300,19 +300,6 @@ Perform a * b + c with no intermediate rounding step.
   dst.w = src.w - \lfloor src.w\rfloor
 
 
-.. opcode:: CLAMP - Clamp
-
-.. math::
-
-  dst.x = clamp(src0.x, src1.x, src2.x)
-
-  dst.y = clamp(src0.y, src1.y, src2.y)
-
-  dst.z = clamp(src0.z, src1.z, src2.z)
-
-  dst.w = clamp(src0.w, src1.w, src2.w)
-
-
 .. opcode:: FLR - Floor
 
 .. math::
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
index d634d2da92..fdaa628fb2 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
@@ -3366,16 +3366,6 @@ Converter::handleInstruction(const struct tgsi_full_instruction *insn)
          mkCvt(OP_CVT, TYPE_F32, dst0[c], TYPE_F32, fetchSrc(0, c))
          ->rnd = ROUND_NI;
       break;
-   case TGSI_OPCODE_CLAMP:
-      FOR_EACH_DST_ENABLED_CHANNEL(0, c, tgsi) {
-         src0 = fetchSrc(0, c);
-         src1 = fetchSrc(1, c);
-         src2 = fetchSrc(2, c);
-         val0 = getScratch();
-         mkOp2(OP_MIN, TYPE_F32, val0, src0, src1);
-         mkOp2(OP_MAX, TYPE_F32, dst0[c], val0, src2);
-      }
-      break;
    case TGSI_OPCODE_SLT:
    case TGSI_OPCODE_SGE:
    case TGSI_OPCODE_SEQ:
diff --git a/src/gallium/drivers/r300/r300_tgsi_to_rc.c b/src/gallium/drivers/r300/r300_tgsi_to_rc.c
index 59dfa05f31..a9e3d6d747 100644
--- a/src/gallium/drivers/r300/r300_tgsi_to_rc.c
+++ b/src/gallium/drivers/r300/r300_tgsi_to_rc.c
@@ -53,7 +53,6 @@ static unsigned translate_opcode(unsigned opcode)
         case TGSI_OPCODE_LRP: return RC_OPCODE_LRP;
      /* case TGSI_OPCODE_DP2A: return RC_OPCODE_DP2A; */
         case TGSI_OPCODE_FRC: return RC_OPCODE_FRC;
-        case TGSI_OPCODE_CLAMP: return RC_OPCODE_CLAMP;
         case TGSI_OPCODE_FLR: return RC_OPCODE_FLR;
         case TGSI_OPCODE_ROUND: return RC_OPCODE_ROUND;
         case TGSI_OPCODE_EX2: return RC_OPCODE_EX2;
diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index b80a3f8b62..8cb3f8b2f4 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -9097,7 +9097,7 @@ static const struct r600_shader_tgsi_instruction r600_shader_tgsi_instruction[]
 	[22]			= { ALU_OP0_NOP, tgsi_unsupported},
 	[23]			= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_FRC]	= { ALU_OP1_FRACT, tgsi_op2},
-	[TGSI_OPCODE_CLAMP]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[25]			= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_FLR]	= { ALU_OP1_FLOOR, tgsi_op2},
 	[TGSI_OPCODE_ROUND]	= { ALU_OP1_RNDNE, tgsi_op2},
 	[TGSI_OPCODE_EX2]	= { ALU_OP1_EXP_IEEE, tgsi_trans_srcx_replicate},
@@ -9295,7 +9295,7 @@ static const struct r600_shader_tgsi_instruction eg_shader_tgsi_instruction[] =
 	[22]			= { ALU_OP0_NOP, tgsi_unsupported},
 	[23]			= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_FRC]	= { ALU_OP1_FRACT, tgsi_op2},
-	[TGSI_OPCODE_CLAMP]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[25]			= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_FLR]	= { ALU_OP1_FLOOR, tgsi_op2},
 	[TGSI_OPCODE_ROUND]	= { ALU_OP1_RNDNE, tgsi_op2},
 	[TGSI_OPCODE_EX2]	= { ALU_OP1_EXP_IEEE, tgsi_trans_srcx_replicate},
@@ -9518,7 +9518,7 @@ static const struct r600_shader_tgsi_instruction cm_shader_tgsi_instruction[] =
 	[22]			= { ALU_OP0_NOP, tgsi_unsupported},
 	[23]			= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_FRC]	= { ALU_OP1_FRACT, tgsi_op2},
-	[TGSI_OPCODE_CLAMP]	= { ALU_OP0_NOP, tgsi_unsupported},
+	[25]			= { ALU_OP0_NOP, tgsi_unsupported},
 	[TGSI_OPCODE_FLR]	= { ALU_OP1_FLOOR, tgsi_op2},
 	[TGSI_OPCODE_ROUND]	= { ALU_OP1_RNDNE, tgsi_op2},
 	[TGSI_OPCODE_EX2]	= { ALU_OP1_EXP_IEEE, cayman_emit_float_instr},
diff --git a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
index e03d0538df..10268e9a28 100644
--- a/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
+++ b/src/gallium/drivers/radeonsi/si_shader_tgsi_alu.c
@@ -733,9 +733,6 @@ void si_shader_context_init_alu(struct lp_build_tgsi_context *bld_base)
 		HAVE_LLVM >= 0x0308 ? "llvm.bitreverse.i32" : "llvm.AMDGPU.brev";
 	bld_base->op_actions[TGSI_OPCODE_CEIL].emit = build_tgsi_intrinsic_nomem;
 	bld_base->op_actions[TGSI_OPCODE_CEIL].intr_name = "llvm.ceil.f32";
-	bld_base->op_actions[TGSI_OPCODE_CLAMP].emit = build_tgsi_intrinsic_nomem;
-	bld_base->op_actions[TGSI_OPCODE_CLAMP].intr_name =
-		HAVE_LLVM >= 0x0308 ? "llvm.AMDGPU.clamp." : "llvm.AMDIL.clamp.";
 	bld_base->op_actions[TGSI_OPCODE_CMP].emit = emit_cmp;
 	bld_base->op_actions[TGSI_OPCODE_COS].emit = build_tgsi_intrinsic_nomem;
 	bld_base->op_actions[TGSI_OPCODE_COS].intr_name = "llvm.cos.f32";
diff --git a/src/gallium/drivers/svga/svga_tgsi_insn.c b/src/gallium/drivers/svga/svga_tgsi_insn.c
index 0efd72d799..fc3ec5eed7 100644
--- a/src/gallium/drivers/svga/svga_tgsi_insn.c
+++ b/src/gallium/drivers/svga/svga_tgsi_insn.c
@@ -3000,7 +3000,6 @@ svga_emit_instruction(struct svga_shader_emitter *emit,
       /* These aren't actually used by any of the frontends we care
        * about:
        */
-   case TGSI_OPCODE_CLAMP:
    case TGSI_OPCODE_AND:
    case TGSI_OPCODE_OR:
    case TGSI_OPCODE_I2F:
diff --git a/src/gallium/include/pipe/p_shader_tokens.h b/src/gallium/include/pipe/p_shader_tokens.h
index 1c8d87cce9..11186047a6 100644
--- a/src/gallium/include/pipe/p_shader_tokens.h
+++ b/src/gallium/include/pipe/p_shader_tokens.h
@@ -354,7 +354,7 @@ struct tgsi_property_data {
 #define TGSI_OPCODE_F2U64               22
 #define TGSI_OPCODE_F2I64               23
 #define TGSI_OPCODE_FRC                 24
-#define TGSI_OPCODE_CLAMP               25
+/* gap */
 #define TGSI_OPCODE_FLR                 26
 #define TGSI_OPCODE_ROUND               27
 #define TGSI_OPCODE_EX2                 28