code_llvm and code_native for https://github.com/JuliaLang/julia/issues/24494#issuecomment-342269050

deleteat! #24494.jl

julia> @code_llvm testnew(signal)

; Function testnew
; Location: REPL[17]
; Function Attrs: uwtable
define %jl_value_t addrspace(10)* @japi1_testnew_64914(%jl_value_t addrspace(10)*, %jl_value_t addrspace(10)**, i32) #0 {
top:
  %gcframe2 = alloca [3 x %jl_value_t addrspace(10)*], align 8
  %gcframe2.sub = getelementptr inbounds [3 x %jl_value_t addrspace(10)*], [3 x %jl_value_t addrspace(10)*]* %gcframe2, i64 0, i64 0
  %3 = getelementptr inbounds [3 x %jl_value_t addrspace(10)*], [3 x %jl_value_t addrspace(10)*]* %gcframe2, i64 0, i64 1
  %4 = bitcast %jl_value_t addrspace(10)** %3 to i8*
  call void @llvm.memset.p0i8.i32(i8* %4, i8 0, i32 16, i32 8, i1 false)
  %5 = alloca %jl_value_t addrspace(10)**, align 8
  store volatile %jl_value_t addrspace(10)** %1, %jl_value_t addrspace(10)*** %5, align 8
  %6 = call %jl_value_t*** @jl_get_ptls_states() #3
  %7 = bitcast [3 x %jl_value_t addrspace(10)*]* %gcframe2 to i64*
  store i64 2, i64* %7, align 8
  %8 = getelementptr [3 x %jl_value_t addrspace(10)*], [3 x %jl_value_t addrspace(10)*]* %gcframe2, i64 0, i64 1
  %9 = bitcast %jl_value_t*** %6 to i64*
  %10 = load i64, i64* %9, align 8
  %11 = bitcast %jl_value_t addrspace(10)** %8 to i64*
  store i64 %10, i64* %11, align 8
  %12 = bitcast %jl_value_t*** %6 to %jl_value_t addrspace(10)***
  store %jl_value_t addrspace(10)** %gcframe2.sub, %jl_value_t addrspace(10)*** %12, align 8
  %13 = load %jl_value_t addrspace(10)*, %jl_value_t addrspace(10)** %1, align 8
; Location: REPL[17]:2
  %14 = call %jl_value_t addrspace(10)* inttoptr (i64 1693665680 to %jl_value_t addrspace(10)* (%jl_value_t addrspace(10)*)*)(%jl_value_t addrspace(10)* %13)
; Location: REPL[17]:3
  %15 = addrspacecast %jl_value_t addrspace(10)* %14 to %jl_value_t addrspace(11)*
  %16 = bitcast %jl_value_t addrspace(11)* %15 to %jl_array_t addrspace(11)*
  %17 = getelementptr inbounds %jl_array_t, %jl_array_t addrspace(11)* %16, i64 0, i32 1
  %18 = load i64, i64 addrspace(11)* %17, align 8
  %19 = icmp slt i64 %18, 1001
  %.op = add i64 %18, 1
  %20 = icmp eq i64 %.op, 1001
  %21 = or i1 %19, %20
  br i1 %21, label %L29, label %if.lr.ph

if.lr.ph:                                         ; preds = %top
  %22 = getelementptr [3 x %jl_value_t addrspace(10)*], [3 x %jl_value_t addrspace(10)*]* %gcframe2, i64 0, i64 2
  br label %if

if:                                               ; preds = %if.lr.ph, %if
  %"#temp#.03" = phi i64 [ 1001, %if.lr.ph ], [ %23, %if ]
  %23 = add i64 %"#temp#.03", 1
  store %jl_value_t addrspace(10)* %14, %jl_value_t addrspace(10)** %22, align 8
; Location: REPL[17]:4
; Function deleteat!; {
; Location: array.jl:1206
  call void inttoptr (i64 1693663328 to void (%jl_value_t addrspace(10)*, i64, i64)*)(%jl_value_t addrspace(10)* %14, i64 999, i64 1)
;}
; Location: REPL[17]:3
  %24 = icmp eq i64 %23, %.op
  br i1 %24, label %L29.loopexit, label %if

L29.loopexit:                                     ; preds = %if
; Location: REPL[17]:6
  br label %L29

L29:                                              ; preds = %L29.loopexit, %top
  %25 = load i64, i64* %11, align 8
  store i64 %25, i64* %9, align 8
  ret %jl_value_t addrspace(10)* %14
}

julia> @code_llvm test(signal)

; Function test
; Location: REPL[16]
; Function Attrs: uwtable
define %jl_value_t addrspace(10)* @japi1_test_64913(%jl_value_t addrspace(10)*, %jl_value_t addrspace(10)**, i32) #0 {
top:
  %gcframe1 = alloca [3 x %jl_value_t addrspace(10)*], align 8
  %gcframe1.sub = getelementptr inbounds [3 x %jl_value_t addrspace(10)*], [3 x %jl_value_t addrspace(10)*]* %gcframe1, i64 0, i64 0
  %3 = getelementptr inbounds [3 x %jl_value_t addrspace(10)*], [3 x %jl_value_t addrspace(10)*]* %gcframe1, i64 0, i64 1
  %4 = bitcast %jl_value_t addrspace(10)** %3 to i8*
  call void @llvm.memset.p0i8.i32(i8* %4, i8 0, i32 16, i32 8, i1 false)
  %5 = alloca %jl_value_t addrspace(10)**, align 8
  store volatile %jl_value_t addrspace(10)** %1, %jl_value_t addrspace(10)*** %5, align 8
  %6 = call %jl_value_t*** @jl_get_ptls_states() #2
  %7 = bitcast [3 x %jl_value_t addrspace(10)*]* %gcframe1 to i64*
  store i64 2, i64* %7, align 8
  %8 = getelementptr [3 x %jl_value_t addrspace(10)*], [3 x %jl_value_t addrspace(10)*]* %gcframe1, i64 0, i64 1
  %9 = bitcast %jl_value_t*** %6 to i64*
  %10 = load i64, i64* %9, align 8
  %11 = bitcast %jl_value_t addrspace(10)** %8 to i64*
  store i64 %10, i64* %11, align 8
  %12 = bitcast %jl_value_t*** %6 to %jl_value_t addrspace(10)***
  store %jl_value_t addrspace(10)** %gcframe1.sub, %jl_value_t addrspace(10)*** %12, align 8
  %13 = load %jl_value_t addrspace(10)*, %jl_value_t addrspace(10)** %1, align 8
; Location: REPL[16]:2
  %14 = call %jl_value_t addrspace(10)* inttoptr (i64 1693665680 to %jl_value_t addrspace(10)* (%jl_value_t addrspace(10)*)*)(%jl_value_t addrspace(10)* %13)
; Location: REPL[16]:3
  %15 = addrspacecast %jl_value_t addrspace(10)* %14 to %jl_value_t addrspace(11)*
  %16 = bitcast %jl_value_t addrspace(11)* %15 to %jl_array_t addrspace(11)*
  %17 = getelementptr inbounds %jl_array_t, %jl_array_t addrspace(11)* %16, i64 0, i32 1
  %18 = load i64, i64 addrspace(11)* %17, align 8
  %19 = icmp slt i64 %18, 1001
  %.op = add i64 %18, 1
  %20 = icmp eq i64 %.op, 1001
  %21 = or i1 %19, %20
  br i1 %21, label %L14, label %if.lr.ph

if.lr.ph:                                         ; preds = %top
  %22 = getelementptr [3 x %jl_value_t addrspace(10)*], [3 x %jl_value_t addrspace(10)*]* %gcframe1, i64 0, i64 2
  br label %if

if:                                               ; preds = %if.lr.ph, %if
  %"#temp#.02" = phi i64 [ 1001, %if.lr.ph ], [ %23, %if ]
  %23 = add i64 %"#temp#.02", 1
  store %jl_value_t addrspace(10)* %14, %jl_value_t addrspace(10)** %22, align 8
; Location: REPL[16]:4
  %24 = call %jl_value_t addrspace(10)* @"julia__deleteat_beg!_64844"(%jl_value_t addrspace(10)* %14, i64 1000, i64 1)
; Location: REPL[16]:3
  %25 = icmp eq i64 %23, %.op
  br i1 %25, label %L14.loopexit, label %if

L14.loopexit:                                     ; preds = %if
; Location: REPL[16]:6
  br label %L14

L14:                                              ; preds = %L14.loopexit, %top
  %26 = load i64, i64* %11, align 8
  store i64 %26, i64* %9, align 8
  ret %jl_value_t addrspace(10)* %14
}
julia> @code_native test(signal)
        .text
; Function <invalid> {
; Location: REPL[16]
        pushq   %rbp
        movq    %rsp, %rbp
        pushq   %r14
        pushq   %rsi
        pushq   %rdi
        pushq   %rbx
        subq    $64, %rsp
        movq    %rdx, %rdi
        xorps   %xmm0, %xmm0
        movups  %xmm0, -48(%rbp)
        movq    %rdi, -64(%rbp)
        movabsq $jl_get_ptls_states, %rax
        callq   *%rax
        movq    %rax, %r14
        movq    $2, -56(%rbp)
        movq    (%r14), %rax
        movq    %rax, -48(%rbp)
        leaq    -56(%rbp), %rax
        movq    %rax, (%r14)
        movq    (%rdi), %rcx
;}
; Function test {
; Location: REPL[16]:2
        movl    $jl_array_copy, %eax
        callq   *%rax
        movq    %rax, %rdi
; Location: REPL[16]:3
        movq    8(%rdi), %rbx
        cmpq    $1001, %rbx             # imm = 0x3E9
        jl      L153
        leaq    1(%rbx), %rax
        cmpq    $1001, %rax             # imm = 0x3E9
        je      L153
        addq    $-1000, %rbx            # imm = 0xFC18
; Location: REPL[16]:4
        movabsq $"_deleteat_beg!", %rsi
        nopw    (%rax,%rax)
L128:
        movq    %rdi, -40(%rbp)
        movl    $1000, %edx             # imm = 0x3E8
        movl    $1, %r8d
        movq    %rdi, %rcx
        callq   *%rsi
; Location: REPL[16]:3
        decq    %rbx
        jne     L128
; Location: REPL[16]:6
L153:
        movq    -48(%rbp), %rax
        movq    %rax, (%r14)
        movq    %rdi, %rax
        addq    $64, %rsp
        popq    %rbx
        popq    %rdi
        popq    %rsi
        popq    %r14
        popq    %rbp
        retq
        nop
;}

julia> @code_native testnew(signal)
        .text
; Function <invalid> {
; Location: REPL[17]
        pushq   %rbp
        movq    %rsp, %rbp
        pushq   %r14
        pushq   %rsi
        pushq   %rdi
        pushq   %rbx
        subq    $64, %rsp
        movq    %rdx, %rdi
        xorps   %xmm0, %xmm0
        movups  %xmm0, -48(%rbp)
        movq    %rdi, -64(%rbp)
        movabsq $jl_get_ptls_states, %rax
        callq   *%rax
        movq    %rax, %r14
        movq    $2, -56(%rbp)
        movq    (%r14), %rax
        movq    %rax, -48(%rbp)
        leaq    -56(%rbp), %rax
        movq    %rax, (%r14)
        movq    (%rdi), %rcx
;}
; Function testnew {
; Location: REPL[17]:2
        movl    $jl_array_copy, %eax
        callq   *%rax
        movq    %rax, %rdi
; Location: REPL[17]:3
        movq    8(%rdi), %rbx
        cmpq    $1001, %rbx             # imm = 0x3E9
        jl      L153
        leaq    1(%rbx), %rax
        cmpq    $1001, %rax             # imm = 0x3E9
        je      L153
        addq    $-1000, %rbx            # imm = 0xFC18
; Location: REPL[17]:4
; Function deleteat!; {
; Location: array.jl:1206
        movl    $jl_array_del_at, %esi
        nopw    %cs:(%rax,%rax)
L128:
        movq    %rdi, -40(%rbp)
        movl    $999, %edx              # imm = 0x3E7
        movl    $1, %r8d
        movq    %rdi, %rcx
        callq   *%rsi
;}
; Location: REPL[17]:3
        decq    %rbx
        jne     L128
; Location: REPL[17]:6
L153:
        movq    -48(%rbp), %rax
        movq    %rax, (%r14)
        movq    %rdi, %rax
        addq    $64, %rsp
        popq    %rbx
        popq    %rdi
        popq    %rsi
        popq    %r14
        popq    %rbp
        retq
        nop
;}