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| author | YunQiang Su <syq@gcc.gnu.org> | 2024-03-15 14:33:58 +0800 |
|---|---|---|
| committer | YunQiang Su <syq@gcc.gnu.org> | 2024-03-15 14:47:36 +0800 |
| commit | acc38ff59976e972ba4b1e39f7653813a05de588 (patch) | |
| tree | 7cb73dfb4265bb3b766d799b67fdd527dbf420ea /gcc/doc | |
| parent | 81f3d963e05de8b17d4ccc7667ead9ed156193a4 (diff) | |
| download | gcc-acc38ff59976e972ba4b1e39f7653813a05de588.zip gcc-acc38ff59976e972ba4b1e39f7653813a05de588.tar.gz gcc-acc38ff59976e972ba4b1e39f7653813a05de588.tar.bz2 | |
MIPS: Add -m(no-)strict-align option
We support options -m(no-)unaligned-access 2 years ago, while
currently most of other ports prefer -m(no-)strict-align.
Let's support -m(no-)strict-align, and keep -m(no-)unaligned-access
as alias.
gcc
* config/mips/mips.opt: Support -mstrict-align, and use
TARGET_STRICT_ALIGN as the flag; keep -m(no-)unaligned-access
as alias.
* config/mips/mips.h: Use TARGET_STRICT_ALIGN.
* config/mips/mips.opt.urls: Regenerate.
* doc/invoke.texi: Document -m(no-)strict-algin for MIPSr6.
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 85c938d..864768f 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -1143,7 +1143,8 @@ Objective-C and Objective-C++ Dialects}. -mcheck-zero-division -mno-check-zero-division -mdivide-traps -mdivide-breaks -mload-store-pairs -mno-load-store-pairs --munaligned-access -mno-unaligned-access +-mstrict-align -mno-strict-align +-mno-unaligned-access -munaligned-access -mmemcpy -mno-memcpy -mlong-calls -mno-long-calls -mmad -mno-mad -mimadd -mno-imadd -mfused-madd -mno-fused-madd -nocpp -mfix-24k -mno-fix-24k @@ -28561,14 +28562,19 @@ instructions to enable load/store bonding. This option is enabled by default but only takes effect when the selected architecture is known to support bonding. +@opindex mstrict-align +@opindex mno-strict-align @opindex munaligned-access @opindex mno-unaligned-access -@item -munaligned-access +@item -mstrict-align +@itemx -mno-strict-align +@itemx -munaligned-access @itemx -mno-unaligned-access -Enable (disable) direct unaligned access for MIPS Release 6. -MIPSr6 requires load/store unaligned-access support, -by hardware or trap&emulate. -So @option{-mno-unaligned-access} may be needed by kernel. +Disable (enable) direct unaligned access for MIPS Release 6. +MIPSr6 requires load/store unaligned-access support, by hardware or +trap&emulate. So @option{-mstrict-align} may be needed by kernel. The +options @option{-munaligned-access} and @option{-mno-unaligned-access} +are obsoleted, and only for backward-compatible. @opindex mmemcpy @opindex mno-memcpy |