diff --git a/src/intel/compiler/brw_disasm.c b/src/intel/compiler/brw_disasm.c
index b5c88a56f78..3e5741b03a9 100644
--- a/src/intel/compiler/brw_disasm.c
+++ b/src/intel/compiler/brw_disasm.c
@@ -796,12 +796,6 @@ reg(FILE *file, unsigned _reg_file, unsigned _reg_nr)
       case BRW_ARF_MASK:
          format(file, "mask%d", _reg_nr & 0x0f);
          break;
-      case BRW_ARF_MASK_STACK:
-         format(file, "ms%d", _reg_nr & 0x0f);
-         break;
-      case BRW_ARF_MASK_STACK_DEPTH:
-         format(file, "msd%d", _reg_nr & 0x0f);
-         break;
       case BRW_ARF_STATE:
          format(file, "sr%d", _reg_nr & 0x0f);
          break;
diff --git a/src/intel/compiler/brw_eu_defines.h b/src/intel/compiler/brw_eu_defines.h
index cf698496eb9..9b368f6fa7f 100644
--- a/src/intel/compiler/brw_eu_defines.h
+++ b/src/intel/compiler/brw_eu_defines.h
@@ -753,8 +753,6 @@ enum ENUM_PACKED gfx10_align1_3src_exec_type {
 #define BRW_ARF_ACCUMULATOR           0x20
 #define BRW_ARF_FLAG                  0x30
 #define BRW_ARF_MASK                  0x40
-#define BRW_ARF_MASK_STACK            0x50
-#define BRW_ARF_MASK_STACK_DEPTH      0x60
 #define BRW_ARF_STATE                 0x70
 #define BRW_ARF_CONTROL               0x80
 #define BRW_ARF_NOTIFICATION_COUNT    0x90
diff --git a/src/intel/compiler/brw_reg.h b/src/intel/compiler/brw_reg.h
index 74936626b4b..f72be6cf950 100644
--- a/src/intel/compiler/brw_reg.h
+++ b/src/intel/compiler/brw_reg.h
@@ -987,21 +987,6 @@ brw_dmask_reg()
    return brw_sr0_reg(2);
 }
 
-static inline struct brw_reg
-brw_mask_stack_reg(unsigned subnr)
-{
-   return suboffset(retype(brw_vec16_reg(BRW_ARCHITECTURE_REGISTER_FILE,
-                                         BRW_ARF_MASK_STACK, 0),
-                           BRW_TYPE_UB), subnr);
-}
-
-static inline struct brw_reg
-brw_mask_stack_depth_reg(unsigned subnr)
-{
-   return brw_uw1_reg(BRW_ARCHITECTURE_REGISTER_FILE,
-                      BRW_ARF_MASK_STACK_DEPTH, subnr);
-}
-
 static inline struct brw_reg
 brw_vgrf(unsigned nr, enum brw_reg_type type)
 {