asm!() -> llvm_asm!()

Author: jedisct1

src/cpucounter.rs

@@ -1,12 +1,14 @@
 use super::timestamp::*;
+#[cfg(asm)]
+use std::llvm_asm;
 
 pub(crate) struct CPUCounter;
 
 #[cfg(asm)]
 #[inline]
 unsafe fn cpucounter() -> u64 {
     let (low, high): (u64, u64);
-    asm!("rdtscp" :  "={eax}" (low), "={edx}" (high) : : "ecx");
+    llvm_asm!("rdtscp" :  "={eax}" (low), "={edx}" (high) : : "ecx");
     (high << 32) | low
 }
 

src/lib.rs

@@ -1,4 +1,4 @@
-#![cfg_attr(asm, feature(asm))]
+#![cfg_attr(asm, feature(llvm_asm))]
 
 //! Precision is a simple crate to perform measurements using hardware counters.
 //!

src/precision.rs

@@ -43,7 +43,7 @@ impl Precision {
 
     #[cfg(any(target_os = "macos", target_os = "freebsd"))]
     fn guess_frequency_using_sysctl(name: &str) -> Result<u64, &'static str> {
-        use libc::{self, c_long, size_t};
+        use libc::{c_long, size_t};
         use std::ffi::CString;
         use std::mem;
         use std::ptr;