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Don't change stack_alignment_needed for __tls_get_addr

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__tls_get_addr must be called with 16-byte aligned stack, which is
guaranted by setting preferred_stack_boundary to 128 bits.  There
is no need to change stack_alignment_needed for __tls_get_addr.

	PR target/68986
	* config/i386/i386.c (ix86_update_stack_boundary): Don't
	change stack_alignment_needed for __tls_get_addr call.

From-SVN: r232901
This commit is contained in:
H.J. Lu 2016-01-27 19:54:03 +00:00 committed by H.J. Lu
parent ac22318350
commit 9525851d49
2 changed files with 7 additions and 5 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-01-27 H.J. Lu <hongjiu.lu@intel.com>
PR target/68986
* config/i386/i386.c (ix86_update_stack_boundary): Don't
change stack_alignment_needed for __tls_get_addr call.
2016-01-27 Segher Boessenkool <segher@kernel.crashing.org>
* config/rs6000/rs6000.c (print_operand): Rollback 's' removal.

6
gcc/config/i386/i386.c
View File

@ -12035,11 +12035,7 @@ ix86_update_stack_boundary (void)
/* __tls_get_addr needs to be called with 16-byte aligned stack. */
if (ix86_tls_descriptor_calls_expanded_in_cfun
&& crtl->preferred_stack_boundary < 128)
{
crtl->preferred_stack_boundary = 128;
if (crtl->stack_alignment_needed < 128)
crtl->stack_alignment_needed = 128;
}
crtl->preferred_stack_boundary = 128;
}
/* Handle the TARGET_GET_DRAP_RTX hook. Return NULL if no DRAP is