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svn+ssh://pythondev@svn.python.org/python/trunk ........ r76300 | mark.dickinson | 2009-11-15 13:12:43 +0000 (Sun, 15 Nov 2009) | 3 lines Issue #5792: Extend short float repr support to x86 platforms using suncc or icc. Many thanks Stefan Krah for help and OpenSolaris testing. ........
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@ -358,6 +358,9 @@ Extension Modules
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Build
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-----
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- Issue #5792: Extend the short float repr support to x86 systems using
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icc or suncc.
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- Issue #6603: Change READ_TIMESTAMP macro in ceval.c so that it
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compiles correctly under gcc on x86-64. This fixes a reported
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problem with the --with-tsc build on x86-64.
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27
configure
vendored
27
configure
vendored
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@ -22945,15 +22945,15 @@ fi
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# correctly-rounded string <-> double conversion functions from
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# Python/dtoa.c, which in turn require that the FPU uses 53-bit
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# rounding; this is a problem on x86, where the x87 FPU has a default
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# rounding precision of 64 bits. For gcc/x86, we try to fix this by
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# rounding precision of 64 bits. For gcc/x86, we can fix this by
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# using inline assembler to get and set the x87 FPU control word.
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if test "$GCC" = yes && test -n "`$CC -dM -E - </dev/null | grep i386`"
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then
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# Check that it's okay to use gcc inline assembler to get and set
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# x87 control word. It should be, but you never know...
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{ echo "$as_me:$LINENO: checking whether we can use gcc inline assembler to get and set x87 control word" >&5
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# This inline assembler syntax may also work for suncc and icc,
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# so we try it on all platforms.
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{ echo "$as_me:$LINENO: checking whether we can use gcc inline assembler to get and set x87 control word" >&5
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echo $ECHO_N "checking whether we can use gcc inline assembler to get and set x87 control word... $ECHO_C" >&6; }
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cat >conftest.$ac_ext <<_ACEOF
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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@ -22964,9 +22964,9 @@ int
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main ()
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{
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unsigned short cw;
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__asm__ __volatile__ ("fnstcw %0" : "=m" (cw));
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__asm__ __volatile__ ("fldcw %0" : : "m" (cw));
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unsigned short cw;
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__asm__ __volatile__ ("fnstcw %0" : "=m" (cw));
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__asm__ __volatile__ ("fldcw %0" : : "m" (cw));
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;
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return 0;
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@ -22998,16 +22998,15 @@ sed 's/^/| /' conftest.$ac_ext >&5
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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{ echo "$as_me:$LINENO: result: $have_gcc_asm_for_x87" >&5
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{ echo "$as_me:$LINENO: result: $have_gcc_asm_for_x87" >&5
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echo "${ECHO_T}$have_gcc_asm_for_x87" >&6; }
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if test "$have_gcc_asm_for_x87" = yes
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then
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if test "$have_gcc_asm_for_x87" = yes
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then
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cat >>confdefs.h <<\_ACEOF
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#define HAVE_GCC_ASM_FOR_X87 1
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_ACEOF
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fi
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fi
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# Detect whether system arithmetic is subject to x87-style double
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33
configure.in
33
configure.in
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@ -3191,25 +3191,24 @@ fi
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# correctly-rounded string <-> double conversion functions from
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# Python/dtoa.c, which in turn require that the FPU uses 53-bit
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# rounding; this is a problem on x86, where the x87 FPU has a default
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# rounding precision of 64 bits. For gcc/x86, we try to fix this by
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# rounding precision of 64 bits. For gcc/x86, we can fix this by
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# using inline assembler to get and set the x87 FPU control word.
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if test "$GCC" = yes && test -n "`$CC -dM -E - </dev/null | grep i386`"
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# This inline assembler syntax may also work for suncc and icc,
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# so we try it on all platforms.
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AC_MSG_CHECKING(whether we can use gcc inline assembler to get and set x87 control word)
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AC_TRY_COMPILE([], [
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unsigned short cw;
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__asm__ __volatile__ ("fnstcw %0" : "=m" (cw));
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__asm__ __volatile__ ("fldcw %0" : : "m" (cw));
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],
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[have_gcc_asm_for_x87=yes], [have_gcc_asm_for_x87=no])
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AC_MSG_RESULT($have_gcc_asm_for_x87)
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if test "$have_gcc_asm_for_x87" = yes
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then
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# Check that it's okay to use gcc inline assembler to get and set
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# x87 control word. It should be, but you never know...
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AC_MSG_CHECKING(whether we can use gcc inline assembler to get and set x87 control word)
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AC_TRY_COMPILE([], [
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unsigned short cw;
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__asm__ __volatile__ ("fnstcw %0" : "=m" (cw));
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__asm__ __volatile__ ("fldcw %0" : : "m" (cw));
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],
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[have_gcc_asm_for_x87=yes], [have_gcc_asm_for_x87=no])
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AC_MSG_RESULT($have_gcc_asm_for_x87)
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if test "$have_gcc_asm_for_x87" = yes
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then
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AC_DEFINE(HAVE_GCC_ASM_FOR_X87, 1,
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[Define if we can use gcc inline assembler to get and set x87 control word])
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fi
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AC_DEFINE(HAVE_GCC_ASM_FOR_X87, 1,
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[Define if we can use gcc inline assembler to get and set x87 control word])
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fi
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# Detect whether system arithmetic is subject to x87-style double
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