[PATCH] Don't change stack_alignment_needed for __tls_get_addr
H.J. Lu
hongjiu.lu@intel.com
Wed Jan 27 19:25:00 GMT 2016
__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.
Tested on x86-64. OK for trunk?
H.J.
--
PR target/68986
* config/i386/i386.c (ix86_update_stack_boundary): Don't
change stack_alignment_needed for __tls_get_addr call.
---
gcc/config/i386/i386.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index cfbdf0f..6dc1fa5 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -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
--
2.5.0
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