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Remove BROKEN_PPC_ASM_CR0 configure test
- From: "Joseph S. Myers" <joseph at codesourcery dot com>
- To: <libc-alpha at sourceware dot org>, Adhemerval Zanella <azanella at linux dot vnet dot ibm dot com>
- Date: Wed, 25 Jun 2014 17:47:37 +0000
- Subject: Remove BROKEN_PPC_ASM_CR0 configure test
- Authentication-results: sourceware.org; auth=none
One piece of architecture-specific code in the main configure.ac is
the powerpc test that can define BROKEN_PPC_ASM_CR0. There's no need
to move this to a sysdeps configure script, or to work out what bug it
was testing in May 1998 to see if it's still relevant, since nothing
in the source tree now uses the results of this test. Thus, this
patch just removes the test in question.
Not tested.
2014-06-25 Joseph Myers <joseph@codesourcery.com>
* configure.ac (libc_cv_c_asmcr0_bug): Remove configure test.
* configure: Regenerated.
* config.h.in (BROKEN_PPC_ASM_CR0): Remove macro.
diff --git a/config.h.in b/config.h.in
index a9ff1e3..38d4aa4 100644
--- a/config.h.in
+++ b/config.h.in
@@ -73,10 +73,6 @@
(gcc on ix86 only). */
#undef USE_REGPARMS
-/* Defined on PowerPC if the GCC being used has a problem with clobbering
- certain registers (CR0, MQ, CTR, LR) in asm statements. */
-#undef BROKEN_PPC_ASM_CR0
-
/* Defined on SPARC if GCC emits GOTDATA relocations. */
#undef HAVE_GCC_GOTDATA
diff --git a/configure b/configure
index ecc282b..ddcd774 100755
--- a/configure
+++ b/configure
@@ -6627,40 +6627,6 @@ if test $libc_cv_gcc_exceptions = yes; then
exceptions=-fexceptions
fi
-if test "$host_cpu" = powerpc ; then
-# Check for a bug present in at least versions 2.8.x of GCC
-# and versions 1.0.x of EGCS.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether clobbering cr0 causes problems" >&5
-$as_echo_n "checking whether clobbering cr0 causes problems... " >&6; }
-if ${libc_cv_c_asmcr0_bug+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-int tester(int x) { asm ("" : : : "cc"); return x & 123; }
-int
-main ()
-{
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
- libc_cv_c_asmcr0_bug='no'
-else
- libc_cv_c_asmcr0_bug='yes'
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_c_asmcr0_bug" >&5
-$as_echo "$libc_cv_c_asmcr0_bug" >&6; }
-if test "$libc_cv_c_asmcr0_bug" != 'no'; then
- $as_echo "#define BROKEN_PPC_ASM_CR0 1" >>confdefs.h
-
-fi
-fi
-
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for __builtin_memset" >&5
$as_echo_n "checking for __builtin_memset... " >&6; }
if ${libc_cv_gcc_builtin_memset+:} false; then :
diff --git a/configure.ac b/configure.ac
index babfe57..8e1c3c8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1797,18 +1797,6 @@ if test $libc_cv_gcc_exceptions = yes; then
fi
AC_SUBST(exceptions)dnl
-if test "$host_cpu" = powerpc ; then
-# Check for a bug present in at least versions 2.8.x of GCC
-# and versions 1.0.x of EGCS.
-AC_CACHE_CHECK(whether clobbering cr0 causes problems,libc_cv_c_asmcr0_bug,[dnl
-AC_TRY_COMPILE([int tester(int x) { asm ("" : : : "cc"); return x & 123; }],,
- libc_cv_c_asmcr0_bug='no',
- libc_cv_c_asmcr0_bug='yes')])
-if test "$libc_cv_c_asmcr0_bug" != 'no'; then
- AC_DEFINE(BROKEN_PPC_ASM_CR0)
-fi
-fi
-
AC_CACHE_CHECK(for __builtin_memset, libc_cv_gcc_builtin_memset, [dnl
cat > conftest.c <<\EOF
void zero (void *x)
--
Joseph S. Myers
joseph@codesourcery.com