intel/disasm: Disassemble immediate value properly for dim

On haswell, for dim instruction we encode immediate float value operand
into double float,

v2: Fix comment (Matt Turner)

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

diff --git a/src/intel/compiler/brw_disasm.c b/src/intel/compiler/brw_disasm.c
index e1cc0f4925ff7802ca1e581517710f875f179818..8b7047db00faff45ede0b817068506e9cf7cefa3 100644 (file)
--- a/src/intel/compiler/brw_disasm.c
+++ b/src/intel/compiler/brw_disasm.c
@@ -1339,9 +1339,18 @@ imm(FILE *file, const struct gen_device_info *devinfo, enum brw_reg_type type,
       format(file, "0x%08xV", brw_inst_imm_ud(devinfo, inst));
       break;
    case BRW_REGISTER_TYPE_F:
-      format(file, "0x%"PRIx64"F", brw_inst_bits(inst, 127, 96));
-      pad(file, 48);
-      format(file, " /* %-gF */", brw_inst_imm_f(devinfo, inst));
+      /* The DIM instruction's src0 uses an F type but contains a
+       * 64-bit immediate
+       */
+      if (brw_inst_opcode(devinfo, inst) == BRW_OPCODE_DIM) {
+         format(file, "0x%"PRIx64"F", brw_inst_bits(inst, 127, 64));
+         pad(file, 48);
+         format(file, "/* %-gF */", brw_inst_imm_df(devinfo, inst));
+      } else {
+         format(file, "0x%"PRIx64"F", brw_inst_bits(inst, 127, 96));
+         pad(file, 48);
+         format(file, " /* %-gF */", brw_inst_imm_f(devinfo, inst));
+      }
       break;
    case BRW_REGISTER_TYPE_DF:
       format(file, "0x%016"PRIx64"DF", brw_inst_bits(inst, 127, 64));