diff --git a/src/lj_vmmath.c b/src/lj_vmmath.c
index 1416b600..9b2235f3 100644
--- a/src/lj_vmmath.c
+++ b/src/lj_vmmath.c
@@ -10,9 +10,7 @@
 #include <math.h>
 
 #include "lj_obj.h"
-#if LJ_HASJIT || LJ_TARGET_MIPS
 #include "lj_ir.h"
-#endif
 #include "lj_vm.h"
 
 /* -- Helper functions for generated machine code ------------------------- */
@@ -24,7 +22,7 @@ LJ_FUNCA double lj_vm_cosh(double x) { return cosh(x); }
 LJ_FUNCA double lj_vm_tanh(double x) { return tanh(x); }
 #endif
 
-#if LJ_TARGET_MIPS
+#if !LJ_TARGET_X86ORX64
 double lj_vm_foldarith(double x, double y, int op)
 {
   switch (op) {
diff --git a/src/vm_arm.dasc b/src/vm_arm.dasc
index aa5fbc88..8ddce49e 100644
--- a/src/vm_arm.dasc
+++ b/src/vm_arm.dasc
@@ -2141,49 +2141,6 @@ static void build_subroutines(BuildCtx *ctx)
   |  rsbmi CARG1, CARG1, #0		// if (sign(divisor) != sign(y)) y = -y
   |  bx lr
   |
-  |// Callable from C: double lj_vm_foldarith(double x, double y, int op)
-  |// Compute x op y for basic arithmetic operators (+ - * / % ^ and unary -)
-  |// and basic math functions. ORDER ARITH
-  |->vm_foldarith:
-  |  ldr OP, [sp]
-  |  cmp OP, #1
-  |  blo extern __aeabi_dadd
-  |  beq extern __aeabi_dsub
-  |  cmp OP, #3
-  |  blo extern __aeabi_dmul
-  |  beq extern __aeabi_ddiv
-  |  cmp OP, #5
-  |  blo ->vm_mod
-  |  beq extern pow
-  |  cmp OP, #7
-  |  eorlo CARG2, CARG2, #0x80000000
-  |  biceq CARG2, CARG2, #0x80000000
-  |  bxls lr
-  |.if JIT
-  |  cmp OP, #9
-  |  blo extern atan2
-  |  beq >9  // No support needed for IR_LDEXP.
-  |  cmp OP, #11
-  |  bhi >9
-  |  push {r4, lr}
-  |  beq >1
-  |  // IR_MIN
-  |  bl extern __aeabi_cdcmple
-  |  movhi CARG1, CARG3
-  |  movhi CARG2, CARG4
-  |  pop {r4, pc}
-  |9:
-  |  NYI  // Bad op.
-  |
-  |1:  // IR_MAX
-  |  bl extern __aeabi_cdcmple
-  |  movlo CARG1, CARG3
-  |  movlo CARG2, CARG4
-  |  pop {r4, pc}
-  |.else
-  |  NYI  // Other operations only needed by JIT compiler.
-  |.endif
-  |
   |//-----------------------------------------------------------------------
   |//-- Miscellaneous functions --------------------------------------------
   |//-----------------------------------------------------------------------
diff --git a/src/vm_ppc.dasc b/src/vm_ppc.dasc
index d2d10b3e..bf46f694 100644
--- a/src/vm_ppc.dasc
+++ b/src/vm_ppc.dasc
@@ -2474,62 +2474,6 @@ static void build_subroutines(BuildCtx *ctx)
   |  mcrxr cr0			// Clear SO for -2147483648 % -1 and return 0.
   |  blr
   |
-  |// Callable from C: double lj_vm_foldarith(double x, double y, int op)
-  |// Compute x op y for basic arithmetic operators (+ - * / % ^ and unary -)
-  |// and basic math functions. ORDER ARITH
-  |->vm_foldarith:
-  |  cmplwi CARG1, 1
-  |  beq >1; bgt >2
-  |  fadd FARG1, FARG1, FARG2; blr
-  |1:
-  |  fsub FARG1, FARG1, FARG2; blr
-  |2:
-  |   cmplwi CARG1, 3; beq >1; bgt >2
-  |  fmul FARG1, FARG1, FARG2; blr
-  |1:
-  |  fdiv FARG1, FARG1, FARG2; blr
-  |2:
-  |   cmplwi CARG1, 5; beq >1; bgt >2
-  |  // NYI: Use internal implementation of floor and avoid spills.
-  |  stwu sp, -32(sp); stfd f14, 16(sp); stfd f15, 24(sp)
-  |   mflr r0
-  |  fmr f14, FARG1
-  |  fdiv FARG1, FARG1, FARG2
-  |   stw r0, 36(sp)
-  |  fmr f15, FARG2
-  |  bl extern floor
-  |   lwz r0, 36(sp)
-  |  fmul FARG1, FARG1, f15
-  |   mtlr r0
-  |  fsub FARG1, f14, FARG1
-  |  lfd f14, 16(sp); lfd f15, 24(sp); addi sp, sp, 32; blr
-  |1:
-  |  b extern pow
-  |2:
-  |   cmplwi CARG1, 7; beq >1; bgt >2
-  |  fneg FARG1, FARG1; blr
-  |1:
-  |  fabs FARG1, FARG1; blr
-  |2:
-  |.if JIT
-  |   cmplwi CARG1, 9; beq >9; bgt >2
-  |  b extern atan2
-  |  // No support needed for IR_LDEXP.
-  |2:
-  |   cmplwi CARG1, 11; bgt >9
-  |  fsub f0, FARG1, FARG2
-  |  beq >1
-  |  fsel FARG1, f0, FARG2, FARG1	// IR_MAX
-  |  blr
-  |1:
-  |  fsel FARG1, f0, FARG1, FARG2	// IR_MIN
-  |  blr
-  |9:
-  |  NYI  // Bad op.
-  |.else
-  |  NYI  // Other operations only needed by JIT compiler.
-  |.endif
-  |
   |//-----------------------------------------------------------------------
   |//-- Miscellaneous functions --------------------------------------------
   |//-----------------------------------------------------------------------