From f4243f6d1f1a7512751d26235a492c24a9a4c76c Mon Sep 17 00:00:00 2001 From: Mark Dickinson Date: Sun, 15 Nov 2009 13:47:27 +0000 Subject: Merged revisions 76300 via svnmerge from 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. ........ --- Misc/NEWS | 3 +++ configure | 27 +++++++++++++-------------- configure.in | 35 +++++++++++++++++------------------ 3 files changed, 33 insertions(+), 32 deletions(-) diff --git a/Misc/NEWS b/Misc/NEWS index 96cc3ce..1577baf 100644 --- a/Misc/NEWS +++ b/Misc/NEWS @@ -358,6 +358,9 @@ Extension Modules Build ----- +- Issue #5792: Extend the short float repr support to x86 systems using + icc or suncc. + - Issue #6603: Change READ_TIMESTAMP macro in ceval.c so that it compiles correctly under gcc on x86-64. This fixes a reported problem with the --with-tsc build on x86-64. diff --git a/configure b/configure index 08e39c9..188435b 100755 --- a/configure +++ b/configure @@ -22945,15 +22945,15 @@ fi # correctly-rounded string <-> double conversion functions from # Python/dtoa.c, which in turn require that the FPU uses 53-bit # rounding; this is a problem on x86, where the x87 FPU has a default -# rounding precision of 64 bits. For gcc/x86, we try to fix this by +# rounding precision of 64 bits. For gcc/x86, we can fix this by # using inline assembler to get and set the x87 FPU control word. -if test "$GCC" = yes && test -n "`$CC -dM -E - &5 + +# This inline assembler syntax may also work for suncc and icc, +# so we try it on all platforms. + +{ echo "$as_me:$LINENO: checking whether we can use gcc inline assembler to get and set x87 control word" >&5 echo $ECHO_N "checking whether we can use gcc inline assembler to get and set x87 control word... $ECHO_C" >&6; } - cat >conftest.$ac_ext <<_ACEOF +cat >conftest.$ac_ext <<_ACEOF /* confdefs.h. */ _ACEOF cat confdefs.h >>conftest.$ac_ext @@ -22964,9 +22964,9 @@ int main () { - unsigned short cw; - __asm__ __volatile__ ("fnstcw %0" : "=m" (cw)); - __asm__ __volatile__ ("fldcw %0" : : "m" (cw)); + unsigned short cw; + __asm__ __volatile__ ("fnstcw %0" : "=m" (cw)); + __asm__ __volatile__ ("fldcw %0" : : "m" (cw)); ; return 0; @@ -22998,16 +22998,15 @@ sed 's/^/| /' conftest.$ac_ext >&5 fi rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext - { echo "$as_me:$LINENO: result: $have_gcc_asm_for_x87" >&5 +{ echo "$as_me:$LINENO: result: $have_gcc_asm_for_x87" >&5 echo "${ECHO_T}$have_gcc_asm_for_x87" >&6; } - if test "$have_gcc_asm_for_x87" = yes - then +if test "$have_gcc_asm_for_x87" = yes +then cat >>confdefs.h <<\_ACEOF #define HAVE_GCC_ASM_FOR_X87 1 _ACEOF - fi fi # Detect whether system arithmetic is subject to x87-style double diff --git a/configure.in b/configure.in index 2e8da64..4a0bf68 100644 --- a/configure.in +++ b/configure.in @@ -3191,25 +3191,24 @@ fi # correctly-rounded string <-> double conversion functions from # Python/dtoa.c, which in turn require that the FPU uses 53-bit # rounding; this is a problem on x86, where the x87 FPU has a default -# rounding precision of 64 bits. For gcc/x86, we try to fix this by +# rounding precision of 64 bits. For gcc/x86, we can fix this by # using inline assembler to get and set the x87 FPU control word. -if test "$GCC" = yes && test -n "`$CC -dM -E -