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regclass.c (globalize_reg): Update regs_invalidated_by_call.

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* regclass.c (globalize_reg): Update regs_invalidated_by_call.
	* gcc.dg/20020616-1.c: New.

From-SVN: r54681
This commit is contained in:
Richard Henderson 2002-06-16 14:52:45 -07:00
parent 548ce8be4a
commit caecc0998a
3 changed files with 43 additions and 8 deletions
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21
gcc/ChangeLog
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@ -1,14 +1,19 @@
2002-06-16 Richard Henderson <rth@redhat.com>
PR opt/6722
* regclass.c (globalize_reg): Update regs_invalidated_by_call.
2002-06-16 Neil Booth <neil@daikokuya.demon.co.uk>
* config.gcc: Add an i386/sysv4-cpp.h. Remove i386-aout.h from
vxworks.
config/i386:
* i386-aout.h, i386elf.h, sysv4.h: Remove CPP_PREDEFINES.
* linux64.h: Use TARGET_OS_CPP_BUILTINS rather than
* config.gcc: Add i386/sysv4-cpp.h; remove i386-aout.h from vxworks.
* config/i386/i386-aout.h, config/i386/i386elf.h,
config/i386/sysv4.h: Remove CPP_PREDEFINES.
* config/i386/linux64.h, config/i386/i386elf.h, config/i386/mach.h,
config/i386/netware.h, config/i386/rtemself.h, config/i386/sco5.h,
config/i386/sol2.h, config/i386/vsta.h, config/i386/vxi386.h,
config/i386/win32.h: Use TARGET_OS_CPP_BUILTINS rather than
CPP_PREDEFINES and part of CPP_SPEC.
i386elf.h, mach.h, netware.h, rtemself.h, sco5.h, sol2.h,
vsta.h, vxi386.h, win32.h: Similarly.
* sysv4-cpp.h: New.
* config/i386/sysv4-cpp.h: New.
2002-06-16 Richard Henderson <rth@redhat.com>

1
gcc/regclass.c
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@ -824,6 +824,7 @@ globalize_reg (i)
SET_HARD_REG_BIT (fixed_reg_set, i);
SET_HARD_REG_BIT (call_used_reg_set, i);
SET_HARD_REG_BIT (call_fixed_reg_set, i);
SET_HARD_REG_BIT (regs_invalidated_by_call, i);
}
/* Now the data and code for the `regclass' pass, which happens

29
gcc/testsuite/gcc.dg/20020616-1.c Normal file
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@ -0,0 +1,29 @@
/* PR opt/6722 */
/* { dg-do run { target i?86-*-* } } */
/* { dg-options "-O2" } */
register int k asm("%ebx");
void __attribute__((noinline))
foo()
{
k = 1;
}
void test()
{
int i;
for (i = 0; i < 10; i += k)
{
k = 0;
foo();
}
}
int main()
{
int old = k;
test();
k = old;
return 0;
}