C vs LLVM vs MCFASM

gcd.c

int gcd(int x, int y) {
  if(x == y) {
    return x;
  } else if(x < y) {
    return gcd(x, y - x);
  } else {
    return gcd(x - y, y);
  }
}

gcd.ll

define i32 @gcd(i32 %x, i32 %y) {
entry:
  %tmp3 = icmp eq i32 %x, %y
  br i1 %tmp3, label %return, label %cond_false
return:
  ret i32 %x
cond_false:
  %tmp9 = icmp ult i32 %x, %y
  br i1 %tmp9, label %cond_true12, label %cond_false19
cond_true12:
  %tmp15 = sub i32 %y, %x
  %tmp17 = call i32 @gcd(i32 %x, i32 %tmp15)
  ret i32 %tmp17
cond_false19:
  %tmp22 = sub i32 %x, %y
  %tmp24 = call i32 @gcd(i32 %tmp22, i32 %y)
  ret i32 %tmp24
}

gcd.mcfunction

# gcd_entry.mcfunction
execute store result score y llmcf_scope run data get storage llmcf stack[-1]
data remove storage llmcf stack[-1]
execute store result score x llmcf_scope run data get storage llmcf stack[-1]
data remove storage llmcf stack[-1]
execute unless score x llmcf_scope = y llmcf_scope run scoreboard players set tmp3 llmcf_scope 0
execute if score x llmcf_scope = y llmcf_scope run scoreboard players set tmp3 llmcf_scope 1
execute if score tmp3 llmcf_scope matches 0 run function llmcf:gcd_cond_false
execute if score tmp3 llmcf_scope matches 1 run function llmcf:gcd_return

# gcd_return.mcfunction
execute store result storage llmcf register int 1 run scoreboard players get x llmcf_scope
data modify storage llmcf stack append from storage llmcf register

# gcd_cond_false.mcfunction
execute unless score x llmcf_scope < y llmcf_scope run scoreboard players set tmp9 llmcf_scope 0
execute if score x llmcf_scope < y llmcf_scope run scoreboard players set tmp9 llmcf_scope 1
execute if score tmp9 llmcf_scope matches 0 run function llmcf:gcd_cond_false19
execute if score tmp9 llmcf_scope matches 1 run function llmcf:gcd_cond_true12

# gcd_cond_true12.mcfunction
scoreboard players operation tmp15 llmcf_scope = y llmcf_scope
scoreboard players operation tmp15 llmcf_scope -= x llmcf_scope
execute store result storage llmcf register int 1 run scoreboard players get tmp3 llmcf_scope
data modify storage llmcf stack append from storage llmcf register
execute store result storage llmcf register int 1 run scoreboard players get tmp9 llmcf_scope
data modify storage llmcf stack append from storage llmcf register
execute store result storage llmcf register int 1 run scoreboard players get x llmcf_scope
data modify storage llmcf stack append from storage llmcf register
execute store result storage llmcf register int 1 run scoreboard players get tmp15 llmcf_scope
data modify storage llmcf stack append from storage llmcf register
function llmcf:gcd_entry
execute store result score tmp17 llmcf_scope run data get storage llmcf stack[-1]
data remove storage llmcf stack[-1]
execute store result score tmp9 llmcf_scope run data get storage llmcf stack[-1]
data remove storage llmcf stack[-1]
execute store result score tmp3 llmcf_scope run data get storage llmcf stack[-1]
data remove storage llmcf stack[-1]
execute store result storage llmcf register int 1 run scoreboard players get tmp17 llmcf_scope
data modify storage llmcf stack append from storage llmcf register

# gcd_cond_false19.mcfunction
scoreboard players operation tmp22 llmcf_scope = x llmcf_scope
scoreboard players operation tmp22 llmcf_scope -= y llmcf_scope
execute store result storage llmcf register int 1 run scoreboard players get tmp3 llmcf_scope
data modify storage llmcf stack append from storage llmcf register
execute store result storage llmcf register int 1 run scoreboard players get tmp9 llmcf_scope
data modify storage llmcf stack append from storage llmcf register
execute store result storage llmcf register int 1 run scoreboard players get tmp22 llmcf_scope
data modify storage llmcf stack append from storage llmcf register
execute store result storage llmcf register int 1 run scoreboard players get y llmcf_scope
data modify storage llmcf stack append from storage llmcf register
function llmcf:gcd_entry
execute store result score tmp24 llmcf_scope run data get storage llmcf stack[-1]
data remove storage llmcf stack[-1]
execute store result score tmp9 llmcf_scope run data get storage llmcf stack[-1]
data remove storage llmcf stack[-1]
execute store result score tmp3 llmcf_scope run data get storage llmcf stack[-1]
data remove storage llmcf stack[-1]
execute store result storage llmcf register int 1 run scoreboard players get tmp24 llmcf_scope
data modify storage llmcf stack append from storage llmcf register

mul_add.c

int mul_add(int x, int y, int z) {
  return x * y + z;
}

mul_add.ll

define i32 @mul_add(i32 %x, i32 %y, i32 %z) {
entry:
  %tmp = mul i32 %x, %y
  %tmp2 = add i32 %tmp, %z
  ret i32 %tmp2
}

mul_add.mcfunction

execute store result score z llmcf_scope run data get storage llmcf stack[-1]
data remove storage llmcf stack[-1]
execute store result score y llmcf_scope run data get storage llmcf stack[-1]
data remove storage llmcf stack[-1]
execute store result score x llmcf_scope run data get storage llmcf stack[-1]
data remove storage llmcf stack[-1]
scoreboard players operation tmp llmcf_scope = x llmcf_scope
scoreboard players operation tmp llmcf_scope *= y llmcf_scope
scoreboard players operation tmp2 llmcf_scope = tmp llmcf_scope
scoreboard players operation tmp2 llmcf_scope += z llmcf_scope
execute store result storage llmcf register int 1 run scoreboard players get tmp2 llmcf_scope
data modify storage llmcf stack append from storage llmcf register