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Add comments for GCC 5 requirement

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* sysdeps/unix/sysv/linux/i386/sysdep.h: Add comments for
	GCC 5 requirement.
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H.J. Lu 2015-10-15 13:35:40 -07:00
parent b7d09f0d63
commit 983a33fa7d
2 changed files with 9 additions and 0 deletions
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ChangeLog
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@ -1,3 +1,8 @@
2015-10-15 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/unix/sysv/linux/i386/sysdep.h: Add comments for
GCC 5 requirement.
2015-10-15 Joseph Myers <joseph@codesourcery.com>
* sysdeps/i386/configure.ac (libc_cv_as_i686): Remove configure

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sysdeps/unix/sysv/linux/i386/sysdep.h
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@ -227,6 +227,10 @@
extern int __syscall_error (int)
attribute_hidden __attribute__ ((__regparm__ (1)));
/* Since GCC 5 and above can properly spill %ebx with PIC when needed,
we can inline syscalls with 6 arguments if GCC 5 or above is used
to compile glibc. */
#if !__GNUC_PREREQ (5,0)
/* We need some help from the assembler to generate optimal code. We
define some macros here which later will be used. */