#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 *getpath(char *path) {
  char *p = path + strlen(path);
  for (; p != path && *p != '/' && *p != '\\'; p--)
    ;
  p++;
  *p = 0;
  return path;
}


x86 assembly (clang, -O0):
<getpath>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rax
mov    %rax,-0x18(%rbp)
mov    -0x8(%rbp),%rdi
call   1030 <strlen@plt>
mov    %eax,%ecx
mov    -0x18(%rbp),%rax
movslq %ecx,%rcx
add    %rcx,%rax
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rcx
xor    %eax,%eax
cmp    -0x8(%rbp),%rcx
mov    %al,-0x19(%rbp)
je     1175 <getpath+0x65>
mov    -0x10(%rbp),%rax
movsbl (%rax),%ecx
xor    %eax,%eax
cmp    $0x2f,%ecx
mov    %al,-0x19(%rbp)
je     1175 <getpath+0x65>
mov    -0x10(%rbp),%rax
movsbl (%rax),%eax
cmp    $0x5c,%eax
setne  %al
mov    %al,-0x19(%rbp)
mov    -0x19(%rbp),%al
test   $0x1,%al
jne    1185 <getpath+0x75>
jmp    119b <getpath+0x8b>
jmp    118a <getpath+0x7a>
mov    -0x10(%rbp),%rax
add    $0xffffffffffffffff,%rax
mov    %rax,-0x10(%rbp)
jmp    113d <getpath+0x2d>
mov    -0x10(%rbp),%rax
add    $0x1,%rax
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rax
movb   $0x0,(%rax)
mov    -0x8(%rbp),%rax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<getpath>:
push   %rbx
mov    %rdi,%rbx
call   1030 <strlen@plt>
cltq
test   %eax,%eax
je     1139 <getpath+0x29>
nop
movzbl (%rbx,%rax,1),%ecx
cmp    $0x2f,%cl
je     1139 <getpath+0x29>
cmp    $0x5c,%cl
je     1139 <getpath+0x29>
add    $0xffffffffffffffff,%rax
jne    1120 <getpath+0x10>
mov    %rbx,%rax
jmp    113c <getpath+0x2c>
add    %rbx,%rax
movb   $0x0,0x1(%rax)
mov    %rbx,%rax
pop    %rbx
ret

LLVM IR (-O0):
define i8* @getpath(i8* %0) {
%2 = alloca i8*
%3 = alloca i8*
store i8* %0, i8** %2
%4 = load i8*, i8** %2
%5 = load i8*, i8** %2
%6 = call i32 @strlen(i8* %5)
%7 = sext i32 %6 to i64
%8 = getelementptr inbounds i8, i8* %4, i64 %7
store i8* %8, i8** %3
br label %9
9: ; preds = %26, %1
%10 = load i8*, i8** %3
%11 = load i8*, i8** %2
%12 = icmp ne i8* %10, %11
br i1 %12, label %13, label %23
13: ; preds = %9
%14 = load i8*, i8** %3
%15 = load i8, i8* %14
%16 = sext i8 %15 to i32
%17 = icmp ne i32 %16, 47
br i1 %17, label %18, label %23
18: ; preds = %13
%19 = load i8*, i8** %3
%20 = load i8, i8* %19
%21 = sext i8 %20 to i32
%22 = icmp ne i32 %21, 92
br label %23
23: ; preds = %18, %13, %9
%24 = phi i1 [ false, %13 ], [ false, %9 ], [ %22, %18 ]
br i1 %24, label %25, label %29
25: ; preds = %23
br label %26
26: ; preds = %25
%27 = load i8*, i8** %3
%28 = getelementptr inbounds i8, i8* %27, i32 -1
store i8* %28, i8** %3
br label %9
29: ; preds = %23
%30 = load i8*, i8** %3
%31 = getelementptr inbounds i8, i8* %30, i32 1
store i8* %31, i8** %3
%32 = load i8*, i8** %3
store i8 0, i8* %32
%33 = load i8*, i8** %2
ret i8* %33
}

LLVM IR (-O2):
define i8* @getpath(i8* returned %0) {
%2 = tail call i32 @strlen(i8* %0)
%3 = sext i32 %2 to i64
%4 = getelementptr inbounds i8, i8* %0, i64 %3
%5 = icmp eq i32 %2, 0
br i1 %5, label %12, label %6
6: ; preds = %1, %9
%7 = phi i8* [ %10, %9 ], [ %4, %1 ]
%8 = load i8, i8* %7
switch i8 %8, label %9 [
i8 47, label %12
i8 92, label %12
]
9: ; preds = %6
%10 = getelementptr inbounds i8, i8* %7, i64 -1
%11 = icmp eq i8* %10, %0
br i1 %11, label %12, label %6
12: ; preds = %9, %6, %6, %1
%13 = phi i8* [ %4, %1 ], [ %7, %6 ], [ %7, %6 ], [ %0, %9 ]
%14 = getelementptr inbounds i8, i8* %13, i64 1
store i8 0, i8* %14
ret i8* %0
}