#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 strlen(char *);
char *shorten_pathname(char *p) {
  int i;
  char *tmp = p;
  for (i = 0; i < strlen(p); i++) {
    if (p[i] == '/') {
      tmp = p + i + 1;
    }
  }
  return tmp;
}


x86 assembly (clang, -O0):
<shorten_pathname>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rax
mov    %rax,-0x18(%rbp)
movl   $0x0,-0xc(%rbp)
mov    -0xc(%rbp),%eax
mov    %eax,-0x1c(%rbp)
mov    -0x8(%rbp),%rdi
call   1030 <strlen@plt>
mov    %eax,%ecx
mov    -0x1c(%rbp),%eax
cmp    %ecx,%eax
jge    1182 <shorten_pathname+0x72>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
movsbl (%rax,%rcx,1),%eax
cmp    $0x2f,%eax
jne    116f <shorten_pathname+0x5f>
mov    -0x8(%rbp),%rax
movslq -0xc(%rbp),%rcx
add    %rcx,%rax
add    $0x1,%rax
mov    %rax,-0x18(%rbp)
jmp    1174 <shorten_pathname+0x64>
mov    -0xc(%rbp),%eax
add    $0x1,%eax
mov    %eax,-0xc(%rbp)
jmp    112b <shorten_pathname+0x1b>
mov    -0x18(%rbp),%rax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<shorten_pathname>:
push   %r15
push   %r14
push   %r12
push   %rbx
push   %rax
mov    %rdi,%r14
call   1030 <strlen@plt>
test   %eax,%eax
jle    1152 <shorten_pathname+0x42>
lea    0x1(%r14),%r15
xor    %ebx,%ebx
mov    %r14,%r12
nopl   (%rax)
cmpb   $0x2f,(%r14,%rbx,1)
lea    (%r15,%rbx,1),%rax
cmove  %rax,%r12
add    $0x1,%rbx
mov    %r14,%rdi
call   1030 <strlen@plt>
cltq
cmp    %rax,%rbx
jl     1130 <shorten_pathname+0x20>
jmp    1155 <shorten_pathname+0x45>
mov    %r14,%r12
mov    %r12,%rax
add    $0x8,%rsp
pop    %rbx
pop    %r12
pop    %r14
pop    %r15
ret

LLVM IR (-O0):
define i8* @shorten_pathname(i8* %0) {
%2 = alloca i8*
%3 = alloca i32
%4 = alloca i8*
store i8* %0, i8** %2
%5 = load i8*, i8** %2
store i8* %5, i8** %4
store i32 0, i32* %3
br label %6
6: ; preds = %26, %1
%7 = load i32, i32* %3
%8 = load i8*, i8** %2
%9 = call i32 @strlen(i8* %8)
%10 = icmp slt i32 %7, %9
br i1 %10, label %11, label %29
11: ; preds = %6
%12 = load i8*, i8** %2
%13 = load i32, i32* %3
%14 = sext i32 %13 to i64
%15 = getelementptr inbounds i8, i8* %12, i64 %14
%16 = load i8, i8* %15
%17 = sext i8 %16 to i32
%18 = icmp eq i32 %17, 47
br i1 %18, label %19, label %25
19: ; preds = %11
%20 = load i8*, i8** %2
%21 = load i32, i32* %3
%22 = sext i32 %21 to i64
%23 = getelementptr inbounds i8, i8* %20, i64 %22
%24 = getelementptr inbounds i8, i8* %23, i64 1
store i8* %24, i8** %4
br label %25
25: ; preds = %19, %11
br label %26
26: ; preds = %25
%27 = load i32, i32* %3
%28 = add nsw i32 %27, 1
store i32 %28, i32* %3
br label %6
29: ; preds = %6
%30 = load i8*, i8** %4
ret i8* %30
}

LLVM IR (-O2):
define i8* @shorten_pathname(i8* %0) {
%2 = tail call i32 @strlen(i8* %0)
%3 = icmp sgt i32 %2, 0
br i1 %3, label %4, label %16
4: ; preds = %1, %4
%5 = phi i64 [ %12, %4 ], [ 0, %1 ]
%6 = phi i8* [ %11, %4 ], [ %0, %1 ]
%7 = getelementptr inbounds i8, i8* %0, i64 %5
%8 = load i8, i8* %7
%9 = icmp eq i8 %8, 47
%10 = getelementptr inbounds i8, i8* %7, i64 1
%11 = select i1 %9, i8* %10, i8* %6
%12 = add nuw nsw i64 %5, 1
%13 = tail call i32 @strlen(i8* %0)
%14 = sext i32 %13 to i64
%15 = icmp slt i64 %12, %14
br i1 %15, label %4, label %16
16: ; preds = %4, %1
%17 = phi i8* [ %0, %1 ], [ %11, %4 ]
ret i8* %17
}