On Jun 22, 2012, at 5:04 PM, Richard Henderson wrote:

> On 06/21/2012 12:48 AM, Tristan Gingold wrote:
>> 2012-06-18  Tristan Gingold  <ging...@adacore.com>
>> 
>>      * config/i386/winnt.c (i386_pe_seh_end_prologue): Move code to ...
>>      (seh_cfa_adjust_cfa): ... that function.
>>      (seh_emit_stackalloc): Do not emit out of range values.
>>      * config/i386/i386.md: Delete unused UNSPEC_REG_SAVE,
>>      UNSPEC_DEF_CFA constants.
>>      * config/i386/i386.h (SEH_MAX_FRAME_SIZE): Define.
>>      * config/i386/i386.c (ix86_frame_pointer_required): Required
>>      for very large frames on SEH target.
>>      (ix86_compute_frame_layout): Save area is before frame pointer
>>      on SEH target.  Handle very large frames.
>>      (ix86_expand_prologue): Likewise.
> 
> Ok.

I propose to backport it to the gcc 4.7 branch, as it fixes two issues: 
incorrect unwind info emitted and support of setjmp.
Is it Ok ?

Tristan.

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