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From: Dara Hazeghi <dhazeghi@yahoo.com>
Subject: Re: target/6039: [ARM] interrupt attribute generats wrong code
Reply-To: Dara Hazeghi <dhazeghi@yahoo.com>
X-SW-Source: 2003-05/txt/msg01927.txt.bz2
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The following reply was made to PR target/6039; it has been noted by GNATS.

From: Dara Hazeghi <dhazeghi@yahoo.com>
To: tori@unhappy.mine.nu, gcc-gnats@gcc.gnu.org, nobody@gcc.gnu.org
Cc:  
Subject: Re: target/6039: [ARM] interrupt attribute generats wrong code
Date: Fri, 16 May 2003 19:48:47 -0700

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit- 
 trail&database=gcc&pr=6039
 
 Hello,
 
 gcc 3.0.4 and 3.1 cvs are rather ancient at this point. Would it be  
 possible for you to check whether this problem is still present. I  
 don't know much about arm assembly, but this is what 3.3 produces:
          .file   "junk.c"
          .text
          .align  2
          .global foo
          .type   foo, %function
 foo:
          @ Interrupt Service Routine.
          @ args = 0, pretend = 0, frame = 12
          @ frame_needed = 1, uses_anonymous_args = 0
          str     ip, [sp, #-4]!
          mov     ip, sp
          sub     lr, lr, #4
          stmfd   sp!, {r0, r1, r2, r3, fp, ip, lr, pc}
          sub     fp, ip, #4
          sub     sp, sp, #12
          mov     r3, #0
          str     r3, [fp, #-40]
          mov     r3, #0
          str     r3, [fp, #-44]
          ldr     r2, [fp, #-40]
          ldr     r3, [fp, #-44]
          add     r3, r2, r3
          str     r3, [fp, #-48]
          bl      bar
          ldmea   fp, {r0, r1, r2, r3, fp, ip, pc}^
          .size   foo, .-foo
          .ident  "GCC: (GNU) 3.3 20030508 (prerelease)"
 
 gcc mainline produces:
          .file   "junk.c"
          .text
          .align  2
          .global foo
          .type   foo, %function
 foo:
          @ Interrupt Service Routine.
          @ args = 0, pretend = 0, frame = 12
          @ frame_needed = 1, uses_anonymous_args = 0
          str     ip, [sp, #-4]!
          mov     ip, sp
          stmfd   sp!, {r0, r1, r2, r3, fp, ip, lr, pc}
          sub     fp, ip, #4
          sub     sp, sp, #12
          mov     r3, #0
          str     r3, [fp, #-40]
          mov     r3, #0
          str     r3, [fp, #-44]
          ldr     r2, [fp, #-40]
          ldr     r3, [fp, #-44]
          add     r3, r2, r3
          str     r3, [fp, #-48]
          bl      bar
          ldmea   fp, {r0, r1, r2, r3, fp, sp, lr}
          ldmfd   sp!, {ip}
          subs    pc, lr, #4
          .size   foo, .-foo
          .ident  "GCC: (GNU) 3.4 20030508 (experimental)"
 
 
 Can you confirm if these are correct? Thanks,
 
 Dara