intel/compiler: Enable the emission of ROR/ROL instructions

v2: 1) Drop changes for vec4 backend as on Gen11+ we don't support
       align16 mode (Matt Turner)

Signed-off-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

src/intel/compiler/brw_eu.c

@@ -488,7 +488,13 @@ static const struct opcode_desc opcode_descs[128] = {
    [BRW_OPCODE_ASR] = {
       .name = "asr",     .nsrc = 2, .ndst = 1, .gens = GEN_ALL,
    },
-   /* Reserved - 13-15 */
+   /* Reserved - 13 */
+   [BRW_OPCODE_ROR] = {
+      .name = "ror",     .nsrc = 2, .ndst = 1, .gens = GEN_GE(GEN11),
+   },
+   [BRW_OPCODE_ROL] = {
+      .name = "rol",     .nsrc = 2, .ndst = 1, .gens = GEN_GE(GEN11),
+   },
    [BRW_OPCODE_CMP] = {
       .name = "cmp",     .nsrc = 2, .ndst = 1, .gens = GEN_ALL,
    },

src/intel/compiler/brw_eu.h

@@ -204,6 +204,8 @@ ALU2(SHR)
 ALU2(SHL)
 ALU1(DIM)
 ALU2(ASR)
+ALU2(ROL)
+ALU2(ROR)
 ALU3(CSEL)
 ALU1(F32TO16)
 ALU1(F16TO32)

src/intel/compiler/brw_eu_defines.h

@@ -210,7 +210,9 @@ enum opcode {
    BRW_OPCODE_SMOV =	10,  /**< Gen8+       */ /* Reused */
    /* Reserved - 11 */
    BRW_OPCODE_ASR =	12,
-   /* Reserved - 13-15 */
+   /* Reserved - 13 */
+   BRW_OPCODE_ROR =	14,  /**< Gen11+ */
+   BRW_OPCODE_ROL =	15,  /**< Gen11+ */
    BRW_OPCODE_CMP =	16,
    BRW_OPCODE_CMPN =	17,
    BRW_OPCODE_CSEL =	18,  /**< Gen8+ */

src/intel/compiler/brw_eu_emit.c

@@ -981,6 +981,8 @@ ALU2(SHR)
 ALU2(SHL)
 ALU1(DIM)
 ALU2(ASR)
+ALU2(ROL)
+ALU2(ROR)
 ALU3(CSEL)
 ALU1(FRC)
 ALU1(RNDD)

src/intel/compiler/brw_fs_builder.h

@@ -594,6 +594,8 @@ namespace brw {
       ALU1(RNDE)
       ALU1(RNDU)
       ALU1(RNDZ)
+      ALU2(ROL)
+      ALU2(ROR)
       ALU2(SAD2)
       ALU2_ACC(SADA2)
       ALU2(SEL)

src/intel/compiler/brw_fs_generator.cpp

@@ -1796,6 +1796,16 @@ fs_generator::generate_code(const cfg_t *cfg, int dispatch_width)
       case BRW_OPCODE_SHL:
 	 brw_SHL(p, dst, src[0], src[1]);
 	 break;
+      case BRW_OPCODE_ROL:
+	 assert(devinfo->gen >= 11);
+	 assert(src[0].type == dst.type);
+	 brw_ROL(p, dst, src[0], src[1]);
+	 break;
+      case BRW_OPCODE_ROR:
+	 assert(devinfo->gen >= 11);
+	 assert(src[0].type == dst.type);
+	 brw_ROR(p, dst, src[0], src[1]);
+	 break;
       case BRW_OPCODE_F32TO16:
          assert(devinfo->gen >= 7);
          brw_F32TO16(p, dst, src[0]);