#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 *);
void path_remove_extension(char *path) {
  char *ch = path + strlen(path);
  for (--ch; ch >= path; --ch) {
    if (*ch == '.') {
      *ch = '\0';
      break;
    }
  }
}


x86 assembly (clang, -O0):
<path_remove_extension>:
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),%rax
add    $0xffffffffffffffff,%rax
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rax
cmp    -0x8(%rbp),%rax
jb     1189 <path_remove_extension+0x79>
mov    -0x10(%rbp),%rax
movsbl (%rax),%eax
cmp    $0x2e,%eax
jne    1173 <path_remove_extension+0x63>
mov    -0x10(%rbp),%rax
movb   $0x0,(%rax)
jmp    1189 <path_remove_extension+0x79>
jmp    1178 <path_remove_extension+0x68>
mov    -0x10(%rbp),%rax
add    $0xffffffffffffffff,%rax
mov    %rax,-0x10(%rbp)
jmp    1149 <path_remove_extension+0x39>
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<path_remove_extension>:
push   %rbx
mov    %rdi,%rbx
call   1030 <strlen@plt>
cltq
add    %rbx,%rax
add    $0xffffffffffffffff,%rax
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax)
cmp    %rbx,%rax
jb     1145 <path_remove_extension+0x35>
lea    -0x1(%rax),%rcx
cmpb   $0x2e,(%rax)
mov    %rcx,%rax
jne    1130 <path_remove_extension+0x20>
movb   $0x0,0x1(%rcx)
pop    %rbx
ret

LLVM IR (-O0):
define void @path_remove_extension(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
%9 = load i8*, i8** %3
%10 = getelementptr inbounds i8, i8* %9, i32 -1
store i8* %10, i8** %3
br label %11
11: ; preds = %23, %1
%12 = load i8*, i8** %3
%13 = load i8*, i8** %2
%14 = icmp uge i8* %12, %13
br i1 %14, label %15, label %26
15: ; preds = %11
%16 = load i8*, i8** %3
%17 = load i8, i8* %16
%18 = sext i8 %17 to i32
%19 = icmp eq i32 %18, 46
br i1 %19, label %20, label %22
20: ; preds = %15
%21 = load i8*, i8** %3
store i8 0, i8* %21
br label %26
22: ; preds = %15
br label %23
23: ; preds = %22
%24 = load i8*, i8** %3
%25 = getelementptr inbounds i8, i8* %24, i32 -1
store i8* %25, i8** %3
br label %11
26: ; preds = %20, %11
ret void
}

LLVM IR (-O2):
define void @path_remove_extension(i8* %0) {
%2 = tail call i32 @strlen(i8* %0)
%3 = sext i32 %2 to i64
%4 = getelementptr inbounds i8, i8* %0, i64 %3
br label %5
5: ; preds = %9, %1
%6 = phi i8* [ %4, %1 ], [ %7, %9 ]
%7 = getelementptr inbounds i8, i8* %6, i64 -1
%8 = icmp ult i8* %7, %0
br i1 %8, label %13, label %9
9: ; preds = %5
%10 = load i8, i8* %7
%11 = icmp eq i8 %10, 46
br i1 %11, label %12, label %5
12: ; preds = %9
store i8 0, i8* %7
br label %13
13: ; preds = %5, %12
ret void
}