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Date: Tue, 15 Apr 2003 20:16:00 -0000
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From: Wolfgang Bangerth <bangerth@ices.utexas.edu>
Subject: Re: middle-end/10415: allocated stack space non optimimal
Reply-To: Wolfgang Bangerth <bangerth@ices.utexas.edu>
X-SW-Source: 2003-04/txt/msg00713.txt.bz2
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The following reply was made to PR middle-end/10415; it has been noted by GNATS.

From: Wolfgang Bangerth <bangerth@ices.utexas.edu>
To: gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: middle-end/10415: allocated stack space non optimimal
Date: Tue, 15 Apr 2003 15:12:46 -0500 (CDT)

 ---------- Forwarded message ----------
 Date: Tue, 15 Apr 2003 21:59:33 +0200
 From: GrzegorzB <b.grzes@interia.pl>
 To: bangerth@dealii.org
 Subject: Re: middle-end/10415: allocated stack space non optimimal
 
 bangerth@dealii.org wrote:
 > Old Synopsis: problem with stack
 > New Synopsis: allocated stack space non optimimal
 > 
 > State-Changed-From-To: open->feedback
 > State-Changed-By: bangerth
 > State-Changed-When: Tue Apr 15 18:27:24 2003
 > State-Changed-Why:
 >     Somehow the attachment got corrupted. Can you send the 
 >     program you used again?
 >     
 >     Thanks
 >       Wolfgang
 > 
 > http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10415
 > 
 
 Program test.c:
 
 void f()
 {
 	char buf[3];
 }
 
 main()
 {
 	f();
 }
 
 I compile this:
 gcc -S -o test test.c
 
 In test is:
         .file   "test.c"
          .text
          .align 2
 .globl f
          .type   f,@function
 f:
          pushl   %ebp
          movl    %esp, %ebp
          subl    $24, %esp    <-- I thing its wrong
          leave
          ret
 .Lfe1:
          .size   f,.Lfe1-f
          .align 2
 .globl main
          .type   main,@function
 main:
          pushl   %ebp
          movl    %esp, %ebp
          subl    $8, %esp
          andl    $-16, %esp
          movl    $0, %eax
          subl    %eax, %esp
          call    f
          leave
          ret
 .Lfe2:
          .size   main,.Lfe2-main
          .ident  "GCC: (GNU) 3.2 20020903 (Red Hat Linux 8.0 3.2-7)"
 
 Sorry, I didn't explain that well.
 Grzegorz Bieda
 
 
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