Package: gcc-4.1
Version: 4.1.0-2
Severity: normal
Trying to write an argument-passing tail call to another function
doesn't seem to get optimized with -foptimize-sibling-calls no matter
which other optimization options I turn on. Example, to be run
through [gcc -foptimize-sibling-calls -O9 -S]:
extern int foo(int x);
int bar(void) { return foo(32); }
On i386 this compiles to
pushl %ebp
movl %esp, %ebp
subl $8, %esp
movl $32, (%esp)
call foo
leave
ret
which doesn't correctly convert the call to foo into a tail call.
---> Drake Wilson
-- System Information:
Debian Release: testing/unstable
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.11
Locale: LANG=C, LC_CTYPE=C
Versions of packages gcc-4.1 depends on:
ii binutils 2.16.1cvs20051214-1 The GNU assembler, linker and bina
ii cpp-4.1 4.1.0-2 The GNU C preprocessor
ii gcc-4.1-base 4.1.0-2 The GNU Compiler Collection (base
ii libc6 2.3.6-7 GNU C Library: Shared libraries
ii libgcc1 1:4.1.0-2 GCC support library
-- no debconf information
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
