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util: use ifdef instead of if defined

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This commit is contained in:
Christian Hergert
2016-08-22 11:53:58 -07:00
parent e4e1bf73b3
commit 3cfcee4757
1 changed files with 2 additions and 2 deletions
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4
lib/util/util.h
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@ -1,11 +1,11 @@
#ifndef SP_UTIL_H
#define SP_UTIL_H
#if defined(__i386__)
#ifdef __i386__
#define read_barrier() asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
#endif
#if defined(__x86_64__)
#ifdef __x86_64__
#define read_barrier() asm volatile("lfence" ::: "memory")
#endif