#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ err_msg(char *);
void dp_err(int k) {
  switch (k) {
  case -1:
    err_msg("Input is not consistent");
    break;
  case -2:
    err_msg("Larger nmax needed");
    break;
  case -3:
    err_msg("Step size too small");
    break;
  case -4:
    err_msg("Problem became stiff");
    break;
  }
}


x86 assembly (clang, -O0):
<dp_err>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %edi,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x4,%eax
mov    %eax,%ecx
mov    %rcx,-0x10(%rbp)
sub    $0x3,%eax
ja     1183 <dp_err+0x73>
mov    -0x10(%rbp),%rax
lea    0xec5(%rip),%rcx
movslq (%rcx,%rax,4),%rax
add    %rcx,%rax
jmp    *%rax
lea    0xec5(%rip),%rdi
call   1030 <err_msg@plt>
jmp    1183 <dp_err+0x73>
lea    0xecc(%rip),%rdi
call   1030 <err_msg@plt>
jmp    1183 <dp_err+0x73>
lea    0xece(%rip),%rdi
call   1030 <err_msg@plt>
jmp    1183 <dp_err+0x73>
lea    0xed1(%rip),%rdi
call   1030 <err_msg@plt>
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<dp_err>:
cmp    $0xfffffffc,%edi
jb     112e <dp_err+0x1e>
add    $0x4,%edi
movslq %edi,%rax
lea    0xf32(%rip),%rcx
movslq (%rcx,%rax,4),%rdi
add    %rcx,%rdi
jmp    1030 <err_msg@plt>
ret

LLVM IR (-O0):
@.str = [24 x i8] c"Input is not consistent\00"
@.str.1 = [19 x i8] c"Larger nmax needed\00"
@.str.2 = [20 x i8] c"Step size too small\00"
@.str.3 = [21 x i8] c"Problem became stiff\00"
define void @dp_err(i32 %0) {
%2 = alloca i32
store i32 %0, i32* %2
%3 = load i32, i32* %2
switch i32 %3, label %12 [
i32 -1, label %4
i32 -2, label %6
i32 -3, label %8
i32 -4, label %10
]
4: ; preds = %1
%5 = call i32 @err_msg(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0))
br label %12
6: ; preds = %1
%7 = call i32 @err_msg(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.1, i64 0, i64 0))
br label %12
8: ; preds = %1
%9 = call i32 @err_msg(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.2, i64 0, i64 0))
br label %12
10: ; preds = %1
%11 = call i32 @err_msg(i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.3, i64 0, i64 0))
br label %12
12: ; preds = %1, %10, %8, %6, %4
ret void
}

LLVM IR (-O2):
@.str = [24 x i8] c"Input is not consistent\00"
@.str.1 = [19 x i8] c"Larger nmax needed\00"
@.str.2 = [20 x i8] c"Step size too small\00"
@.str.3 = [21 x i8] c"Problem became stiff\00"
@reltable.dp_err = [4 x i32] [i32 trunc (i64 sub (i64 ptrtoint ([21 x i8]* @.str.3 to i64), i64 ptrtoint ([4 x i32]* @reltable.dp_err to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([20 x i8]* @.str.2 to i64), i64 ptrtoint ([4 x i32]* @reltable.dp_err to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([19 x i8]* @.str.1 to i64), i64 ptrtoint ([4 x i32]* @reltable.dp_err to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint ([24 x i8]* @.str to i64), i64 ptrtoint ([4 x i32]* @reltable.dp_err to i64)) to i32)]
define void @dp_err(i32 %0) {
%2 = icmp ugt i32 %0, -5
br i1 %2, label %3, label %9
3: ; preds = %1
%4 = add i32 %0, 4
%5 = sext i32 %4 to i64
%6 = shl i64 %5, 2
%7 = call i8* @llvm.load.relative.i64(i8* bitcast ([4 x i32]* @reltable.dp_err to i8*), i64 %6)
%8 = tail call i32 @err_msg(i8* %7)
br label %9
9: ; preds = %1, %3
ret void
}