LDC 1.24.0. / CT string compare / druntime symbols

app.d

extern(C) void _start() {
    static if ("a" == "a") {}
}

app.wat

(module
  (type (;0;) (func (param i32 i32 i32) (result i32)))
  (type (;1;) (func))
  (type (;2;) (func (param i32 i32 i32 i32) (result i32)))
  (import "env" "memcmp" (func $memcmp (type 0)))
  (func $_start (type 1))                                                     (func $_D4core8internal5array8equality__T8__equalsTyaTyaZQqFNaNbNiNfMAyaMQeZb (type 2) (param i32 i32 i32 i32) (result i32)                               (local i32)                                                                 i32.const 0
    local.set 4
    block  ;; label = @1
      block  ;; label = @2                                                          local.get 2
        local.get 0                                                                 i32.ne
        br_if 0 (;@2;)
        local.get 2
        br_if 1 (;@1;)
        i32.const 1
        local.set 4
      end
      local.get 4
      return
    end
    local.get 3
    local.get 1
    local.get 2
    call $memcmp
    i32.eqz)
  (func $_D4core8internal5array8equality__T8__equalsTyaTyaZQqFMAyaMQeZ13trustedMemcmpFNaNbNiNeMQBgMQBkZb (type 2) (param i32 i32 i32 i32) (result i32)
    local.get 3
    local.get 1
    local.get 2
    call $memcmp
    i32.eqz)
  (func $_D4core8internal5array8equality__T2atTyaZQhFNaNbNcNiNeAyakZya (type 0) (param i32 i32 i32) (result i32)                                            local.get 2
    local.get 0
    i32.add)                                                                  (table (;0;) 1 1 funcref)
  (memory (;0;) 2)                                                            (global (;0;) (mut i32) (i32.const 66592))
  (global (;1;) i32 (i32.const 1024))
  (export "memory" (memory 0))
  (export "_start" (func $_start))                                            (export "_D4core8internal5array8equality__T8__equalsTyaTyaZQqFNaNbNiNfMAyaMQeZb" (func $_D4core8internal5array8equality__T8__equalsTyaTyaZQqFNaNbNiNfMAyaMQeZb))
  (export "_D4core8internal5array8equality__T8__equalsTyaTyaZQqFMAyaMQeZ13trustedMemcmpFNaNbNiNeMQBgMQBkZb" (func $_D4core8internal5array8equality__T8__equalsTyaTyaZQqFMAyaMQeZ13trustedMemcmpFNaNbNiNeMQBgMQBkZb))                  (export "_D4core8internal5array8equality__T2atTyaZQhFNaNbNcNiNeAyakZya" (func $_D4core8internal5array8equality__T2atTyaZQhFNaNbNcNiNeAyakZya))          (export "_D9wasm_test12__ModuleInfoZ" (global 1))
  (data (;0;) (i32.const 1024) "\04\00\00\80\00\00\00\00wasm_test\00\00\00")
  (data (;1;) (i32.const 1044) "\00\04\00\00")) 

build.sh

#!/usr/bin/env sh

ldc2 -mtriple=wasm32-unknown-unknown-wasm -ofapp.wasm app.d -L--allow-undefined -O3

wasm2wat app.wasm > app.wat