diff --git a/src/host/buildvm_libbc.h b/src/host/buildvm_libbc.h
index d2d83ea6..ee97836a 100644
--- a/src/host/buildvm_libbc.h
+++ b/src/host/buildvm_libbc.h
@@ -3,10 +3,13 @@
 static const int libbc_endian = 0;
 
 static const uint8_t libbc_code[] = {
-0
+0,1,2,0,0,1,2,22,1,0,0,72,1,2,0,241,135,158,166,3,220,203,178,130,4,0,1,2,0,
+0,1,2,22,1,0,0,72,1,2,0,243,244,148,165,20,198,190,199,252,3,0
 };
 
 static const struct { const char *name; int ofs; } libbc_map[] = {
-{NULL,0}
+{"math_deg",0},
+{"math_rad",25},
+{NULL,50}
 };
 
diff --git a/src/lib_math.c b/src/lib_math.c
index b23d9a2d..e474f980 100644
--- a/src/lib_math.c
+++ b/src/lib_math.c
@@ -63,11 +63,8 @@ LJLIB_ASM(math_log)		LJLIB_REC(math_log)
   return FFH_RETRY;
 }
 
-LJLIB_PUSH(57.29577951308232)
-LJLIB_ASM_(math_deg)		LJLIB_REC(math_degrad)
-
-LJLIB_PUSH(0.017453292519943295)
-LJLIB_ASM_(math_rad)		LJLIB_REC(math_degrad)
+LJLIB_LUA(math_deg) /* function(x) return x * 57.29577951308232 end */
+LJLIB_LUA(math_rad) /* function(x) return x * 0.017453292519943295 end */
 
 LJLIB_ASM(math_atan2)		LJLIB_REC(.)
 {
diff --git a/src/lj_dispatch.h b/src/lj_dispatch.h
index a56b6260..57614d99 100644
--- a/src/lj_dispatch.h
+++ b/src/lj_dispatch.h
@@ -60,7 +60,7 @@ typedef uint16_t HotCount;
 #define HOTCOUNT_CALL		1
 
 /* This solves a circular dependency problem -- bump as needed. Sigh. */
-#define GG_NUM_ASMFF	62
+#define GG_NUM_ASMFF	60
 
 #define GG_LEN_DDISP	(BC__MAX + GG_NUM_ASMFF)
 #define GG_LEN_SDISP	BC_FUNCF
diff --git a/src/lj_ffrecord.c b/src/lj_ffrecord.c
index 4aa4f064..30d5c44e 100644
--- a/src/lj_ffrecord.c
+++ b/src/lj_ffrecord.c
@@ -528,14 +528,6 @@ static void LJ_FASTCALL recff_math_modf(jit_State *J, RecordFFData *rd)
   rd->nres = 2;
 }
 
-static void LJ_FASTCALL recff_math_degrad(jit_State *J, RecordFFData *rd)
-{
-  TRef tr = lj_ir_tonum(J, J->base[0]);
-  TRef trm = lj_ir_knum(J, numV(&J->fn->c.upvalue[0]));
-  J->base[0] = emitir(IRTN(IR_MUL), tr, trm);
-  UNUSED(rd);
-}
-
 static void LJ_FASTCALL recff_math_pow(jit_State *J, RecordFFData *rd)
 {
   TRef tr = lj_ir_tonum(J, J->base[0]);
diff --git a/src/vm_arm.dasc b/src/vm_arm.dasc
index 114416a4..c46d9243 100644
--- a/src/vm_arm.dasc
+++ b/src/vm_arm.dasc
@@ -1501,19 +1501,6 @@ static void build_subroutines(BuildCtx *ctx)
   |  math_extern2 atan2
   |  math_extern2 fmod
   |
-  |->ff_math_deg:
-  |.if FPU
-  |  .ffunc_d math_rad
-  |  vldr d1, CFUNC:CARG3->upvalue[0]
-  |  vmul.f64 d0, d0, d1
-  |  b ->fff_resd
-  |.else
-  |  .ffunc_n math_rad
-  |  ldrd CARG34, CFUNC:CARG3->upvalue[0]
-  |  bl extern __aeabi_dmul
-  |  b ->fff_restv
-  |.endif
-  |
   |.if HFABI
   |  .ffunc math_ldexp
   |  ldr CARG4, [BASE, #4]
diff --git a/src/vm_mips.dasc b/src/vm_mips.dasc
index a81dbeeb..e7c89267 100644
--- a/src/vm_mips.dasc
+++ b/src/vm_mips.dasc
@@ -1521,12 +1521,6 @@ static void build_subroutines(BuildCtx *ctx)
   |  b ->fff_resn
   |.  nop
   |
-  |->ff_math_deg:
-  |.ffunc_n math_rad
-  |.  ldc1 FARG2, CFUNC:RB->upvalue[0]
-  |  b ->fff_resn
-  |.  mul.d FRET1, FARG1, FARG2
-  |
   |.ffunc_nn math_ldexp
   |  cvt.w.d FARG2, FARG2
   |  load_got ldexp
diff --git a/src/vm_ppc.dasc b/src/vm_ppc.dasc
index 685ea518..e6fd977b 100644
--- a/src/vm_ppc.dasc
+++ b/src/vm_ppc.dasc
@@ -1870,12 +1870,6 @@ static void build_subroutines(BuildCtx *ctx)
   |  math_extern2 atan2
   |  math_extern2 fmod
   |
-  |->ff_math_deg:
-  |.ffunc_n math_rad
-  |  lfd FARG2, CFUNC:RB->upvalue[0]
-  |  fmul FARG1, FARG1, FARG2
-  |  b ->fff_resn
-  |
   |.if DUALNUM
   |.ffunc math_ldexp
   |  cmplwi NARGS8:RC, 16
diff --git a/src/vm_ppcspe.dasc b/src/vm_ppcspe.dasc
index 4fabc02f..b443f1b3 100644
--- a/src/vm_ppcspe.dasc
+++ b/src/vm_ppcspe.dasc
@@ -1456,12 +1456,6 @@ static void build_subroutines(BuildCtx *ctx)
   |  math_extern2 atan2
   |  math_extern2 fmod
   |
-  |->ff_math_deg:
-  |.ffunc_n math_rad
-  |  evldd CARG2, CFUNC:RB->upvalue[0]
-  |  efdmul CRET1, CARG1, CARG2
-  |  b ->fff_restv
-  |
   |.ffunc math_ldexp
   |  cmplwi NARGS8:RC, 16
   |   evldd CARG2, 0(BASE)
diff --git a/src/vm_x86.dasc b/src/vm_x86.dasc
index 7020eb27..bf42f5d2 100644
--- a/src/vm_x86.dasc
+++ b/src/vm_x86.dasc
@@ -2030,12 +2030,6 @@ static void build_subroutines(BuildCtx *ctx)
   |  math_extern cosh
   |  math_extern tanh
   |
-  |->ff_math_deg:
-  |.ffunc_nsse math_rad
-  |  mov CFUNC:RB, [BASE-8]
-  |  mulsd xmm0, qword CFUNC:RB->upvalue[0]
-  |  jmp ->fff_resxmm0
-  |
   |.ffunc_nn math_atan2;	fpatan;		jmp ->fff_resn
   |.ffunc_nnr math_ldexp;	fscale; fpop1;	jmp ->fff_resn
   |