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authorH.J. Lu <hjl.tools@gmail.com>2020-04-07 06:44:37 -0700
committerH.J. Lu <hjl.tools@gmail.com>2020-04-07 06:44:37 -0700
commit93a0959ef261c92b5d9c337f1e4cb64bbe453a9a (patch)
treeb8c00ba71001f784599d6596ad27c79544ad3489 /sysdeps/unix/sysv/linux/i386/sysdep.h
parent10b2cdc3b3a9aab153e07bb7f8e1765dc3cd01fa (diff)
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i386: Remove build support for GCC older than GCC 6
Since GCC 6.2 or later is required to build glibc, remove build support
for GCC older than GCC 6.

Testd with GCC 6.4 and GCC 9.3.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/sysdep.h')
-rw-r--r--sysdeps/unix/sysv/linux/i386/sysdep.h17
1 files changed, 1 insertions, 16 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h
index 6671afe65e..f6847a67e3 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
@@ -48,7 +48,7 @@
    to compile glibc.  Disable GCC 5 optimization when compiling for
    profiling or when -fno-omit-frame-pointer is used since asm ("ebp")
    can't be used to put the 6th argument in %ebp for syscall.  */
-#if __GNUC_PREREQ (5,0) && !defined PROF && CAN_USE_REGISTER_ASM_EBP
+#if !defined PROF && CAN_USE_REGISTER_ASM_EBP
 # define OPTIMIZE_FOR_GCC_5
 #endif
 
@@ -580,21 +580,6 @@ struct libc_do_syscall_args
 # define EXTRAVAR_5
 #endif
 
-/* Consistency check for position-independent code.  Disabled for GCC 5
-   and above since there is no fixed PIC register in GCC 5 and above.  */
-#if defined __PIC__ && !__GNUC_PREREQ (5,0)
-# define check_consistency()						      \
-  ({ int __res;								      \
-     __asm__ __volatile__						      \
-       (LOAD_PIC_REG_STR (cx) ";"					      \
-	"subl %%ebx, %%ecx;"						      \
-	"je 1f;"							      \
-	"ud2;"								      \
-	"1:\n"								      \
-	: "=c" (__res));						      \
-     __res; })
-#endif
-
 #endif	/* __ASSEMBLER__ */