diff options
| author | Uros Bizjak <uros@gcc.gnu.org> | 2008-05-23 09:53:16 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2008-05-23 09:53:16 +0200 |
| commit | 922e3e33b211d1f01056457b093c8196aff40333 (patch) | |
| tree | 40050495f1a2d014b7c9ed11be27fad5038f05a0 /gcc/configure | |
| parent | 71995c2c69bc2484ca571b29cf376acd860c2f88 (diff) | |
| download | gcc-922e3e33b211d1f01056457b093c8196aff40333.zip gcc-922e3e33b211d1f01056457b093c8196aff40333.tar.gz gcc-922e3e33b211d1f01056457b093c8196aff40333.tar.bz2 | |
re PR target/36079 (cld instruction is not emitted anymore.)
PR target/36079
* configure.ac: Handle --enable-cld.
* configure: Regenerated.
* config.gcc: Add USE_IX86_CLD to tm_defines for x86 targets.
* config/i386/i386.h (struct machine_function): Add needs_cld field.
(ix86_current_function_needs_cld): New define.
* config/i386/i386.md (UNSPEC_CLD): New unspec volatile constant.
(cld): New isns pattern.
(strmov_singleop, rep_mov, strset_singleop, rep_stos, cmpstrnqi_nz_1,
cmpstrnqi_1, strlenqi_1): Set ix86_current_function_needs_cld flag.
* config/i386/i386.opt (mcld): New option.
* config/i386/i386.c (ix86_expand_prologue): Emit cld insn if
TARGET_CLD and ix86_current_function_needs_cld.
(override_options): Use -mcld by default for 32-bit code if
USE_IX86_CLD.
* doc/install.texi (Options specification): Document --enable-cld.
* doc/invoke.texi (Machine Dependent Options)
[i386 and x86-64 Options]: Add -mcld option.
(Intel 386 and AMD x86-64 Options): Document -mcld option.
From-SVN: r135792
Diffstat (limited to 'gcc/configure')
| -rwxr-xr-x | gcc/configure | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/configure b/gcc/configure index 9f8cf5f..b2ab9a7 100755 --- a/gcc/configure +++ b/gcc/configure @@ -1046,6 +1046,7 @@ Optional Features: --enable-sjlj-exceptions arrange to use setjmp/longjmp exception handling --enable-secureplt enable -msecure-plt by default for PowerPC + --enable-cld enable -mcld by default for 32bit x86 --disable-win32-registry disable lookup of installation paths in the Registry on Windows hosts @@ -13709,6 +13710,14 @@ if test "${enable_secureplt+set}" = set; then fi; +# Check whether --enable-cld or --disable-cld was given. +if test "${enable_cld+set}" = set; then + enableval="$enable_cld" + +else + enable_cld=no +fi; + # Windows32 Registry support for specifying GCC installation paths. # Check whether --enable-win32-registry or --disable-win32-registry was given. if test "${enable_win32_registry+set}" = set; then |