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| author | H.J. Lu <hjl@gcc.gnu.org> | 2009-05-21 11:42:20 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2009-05-21 11:42:20 -0700 |
| commit | cabf85c3a4b2ffd798f18e5e4f71988c6cccce20 (patch) | |
| tree | a93fbd470e8d9d31fa245f28efc6de13f4f22724 /gcc/doc/invoke.texi | |
| parent | 9fefa0aac20b7ca088b4d2fa3bf1abaa8df691f0 (diff) | |
| download | gcc-cabf85c3a4b2ffd798f18e5e4f71988c6cccce20.zip gcc-cabf85c3a4b2ffd798f18e5e4f71988c6cccce20.tar.gz gcc-cabf85c3a4b2ffd798f18e5e4f71988c6cccce20.tar.bz2 | |
cpuid.h (bit_MOVBE): New.
gcc/
2009-05-21 H.J. Lu <hongjiu.lu@intel.com>
Uros Bizjak <ubizjak@gmail.com>
* config/i386/cpuid.h (bit_MOVBE): New.
* config/i386/driver-i386.c (host_detect_local_cpu): Check movbe.
* config/i386/i386.c (OPTION_MASK_ISA_MOVBE_SET): New.
(OPTION_MASK_ISA_MOVBE_UNSET): Likewise.
(ix86_handle_option): Handle OPT_mmovbe.
(ix86_target_string): Add -mmovbe.
(pta_flags): Add PTA_MOVBE.
(processor_alias_table): Add PTA_MOVBE to "atom".
(override_options): Handle PTA_MOVBE.
* config/i386/i386.h (TARGET_MOVBE): New.
* config/i386/i386.md (bswapsi2): Check TARGET_MOVBE.
(*bswapsi_movbe): New.
(*bswapdi_movbe): Likewise.
(bswapdi2): Renamed to ...
(*bswapdi_1): This.
(bswapdi2): New expander.
* config/i386/i386.opt (mmovbe): New.
* doc/invoke.texi: Document -mmovbe.
gcc/testsuite/
2009-05-21 H.J. Lu <hongjiu.lu@intel.com>
* gcc.target/i386/movbe-1.c: New.
* gcc.target/i386/movbe-2.c: Likewise.
From-SVN: r147773
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 3dba074..db9df63 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -577,7 +577,7 @@ Objective-C and Objective-C++ Dialects}. -mno-wide-multiply -mrtd -malign-double @gol -mpreferred-stack-boundary=@var{num} -mincoming-stack-boundary=@var{num} --mcld -mcx16 -msahf -mrecip @gol +-mcld -mcx16 -msahf -mmovbe -mrecip @gol -mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -msse4 -mavx @gol -maes -mpclmul @gol -msse4a -m3dnow -mpopcnt -mabm -msse5 @gol @@ -11458,6 +11458,11 @@ SAHF are load and store instructions, respectively, for certain status flags. In 64-bit mode, SAHF instruction is used to optimize @code{fmod}, @code{drem} or @code{remainder} built-in functions: see @ref{Other Builtins} for details. +@item -mmovbe +@opindex mmovbe +This option will enable GCC to use movbe instruction to implement +@code{__builtin_bswap32} and @code{__builtin_bswap64}. + @item -mrecip @opindex mrecip This option will enable GCC to use RCPSS and RSQRTSS instructions (and their |