Re: middle-end/3474: __builtin_sqrtf calls sqrtf

Re: middle-end/3474: __builtin_sqrtf calls sqrtf

[gdr]

Synopsis: __builtin_sqrtf calls sqrtf

Responsible-Changed-From-To: unassigned->gdr
Responsible-Changed-By: gdr
Responsible-Changed-When: Fri Mar 22 16:38:41 2002
Responsible-Changed-Why:
    Mine.
State-Changed-From-To: analyzed->closed
State-Changed-By: gdr
State-Changed-When: Fri Mar 22 16:38:41 2002
State-Changed-Why:
    Fixed with
    2001-06-24  David Edelsohn <dje@watson.ibm.com>
    
            * libmath/stubs.c (sqrtf): Define.
            (tanf): Correct typo.
    

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3474

Re: middle-end/3474: __builtin_sqrtf calls sqrtf

[nathan]

Synopsis: __builtin_sqrtf calls sqrtf

State-Changed-From-To: open->analyzed
State-Changed-By: nathan
State-Changed-When: Fri Jun 29 04:46:23 2001
State-Changed-Why:
    2.95 also produces the same code, however I've marked
    this high priority as now libstdc++ uses it and it
    is a user visible regression from that point of view.
    bug 3072 records the initial problem with libstdc++
    
    Oh yes, __builtin_sinf and __builtin_cosf are similarly
    aflicted.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view&pr=3474&database=gcc

middle-end/3474: __builtin_sqrtf calls sqrtf

[nathan]

>Number:         3474
>Category:       middle-end
>Synopsis:       __builtin_sqrtf calls sqrtf
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jun 29 02:46:13 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Nathan
>Release:        3.0
>Organization:
>Environment:
sparc-sun-solaris2.7
>Description:
the builtin __builtin_sqrtf expands to code
which calls sqrtf. sqrtf is not available on all systems.
In particular it is not available on Solaris.

__builtin_sqrtf is used by libstdc++'s implementation of
	float std::sqrt (float);

I attach a sample source file, and the assembler output

nathan@manao:716>gcc -v -S builtin.c  
Reading specs from /usr/local/egcs/sparc-SunOS-5/lib/gcc-lib/sparc-sun-solaris2.7/3.0/specs
Configured with: ../gcc-3.0/configure --prefix=/usr/local/egcs --exec-prefix=/usr/local/egcs/sparc-SunOS-5 --with-ld=/usr/local/egcs/sparc-SunOS-5/bin/ld --with-as=/usr/local/egcs/sparc-SunOS-5/bin/as
Thread model: posix
gcc version 3.0
 /usr/local/egcs/sparc-SunOS-5/lib/gcc-lib/sparc-sun-solaris2.7/3.0/cc1 -lang-c -std=c89 -v -D__GNUC__=3 -D__GNUC_MINOR__=0 -D__GNUC_PATCHLEVEL__=0 -D__sparc__ -D__sun__ -D__unix__ -D__svr4__ -D__SVR4 -D__sparc -D__sun -D__unix -Asystem=unix -Asystem=svr4 -D__NO_INLINE__ -D__STDC_HOSTED__=1 -Wall -Wpointer-arith -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -D__GCC_NEW_VARARGS__ -Acpu=sparc -Amachine=sparc builtin.c -quiet -dumpbase builtin.c -ansi -Wall -Wpointer-arith -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -ansi -version -o builtin.s
GNU CPP version 3.0 (cpplib) (sparc)
GNU C version 3.0 (sparc-sun-solaris2.7)
        compiled by GNU C version 3.0.
ignoring nonexistent directory "/usr/local/egcs/sparc-SunOS-5/sparc-sun-solaris2.7/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /usr/local/egcs/sparc-SunOS-5/lib/gcc-lib/sparc-sun-solaris2.7/3.0/include
 /usr/include
End of search list.
builtin.c:2: warning: no previous prototype for `foo'

>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: application/octet-stream; name="builtin.c"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="builtin.c"

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