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| author | Takayuki 'January June' Suwa <jjsuwa_sys3175@yahoo.co.jp> | 2022-06-14 12:34:48 +0900 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2022-06-15 16:55:36 -0700 |
| commit | 96518f714e3fab53a966a05b8d48011e27c1a718 (patch) | |
| tree | 094e3c71eb6b0e053e994d972674b407d2904fc3 /gcc/doc | |
| parent | 63c073199491b7ec2261d39af51c02147c2f0daf (diff) | |
| download | gcc-96518f714e3fab53a966a05b8d48011e27c1a718.zip gcc-96518f714e3fab53a966a05b8d48011e27c1a718.tar.gz gcc-96518f714e3fab53a966a05b8d48011e27c1a718.tar.bz2 | |
xtensa: Document new -mextra-l32r-costs= Xtensa-specific option
gcc/ChangeLog:
* doc/invoke.texi: Document -mextra-l32r-costs= option.
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 0eab7e4..60b7b5a 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -1474,7 +1474,8 @@ See RS/6000 and PowerPC Options. -mauto-litpools -mno-auto-litpools @gol -mtarget-align -mno-target-align @gol -mlongcalls -mno-longcalls @gol --mabi=@var{abi-type}} +-mabi=@var{abi-type} @gol +-mextra-l32r-costs=@var{cycles}} @emph{zSeries Options} See S/390 and zSeries Options. @@ -33549,6 +33550,14 @@ by 8 registers on entry so that its arguments are found in registers pointer. Register window is rotated 8 registers back upon return. When this version of the ABI is enabled the C preprocessor symbol @code{__XTENSA_WINDOWED_ABI__} is defined. + +@item -mextra-l32r-costs=@var{n} +@opindex mextra-l32r-costs +Specify an extra cost of instruction RAM/ROM access for @code{L32R} +instructions, in clock cycles. This affects, when optimizing for speed, +whether loading a constant from literal pool using @code{L32R} or +synthesizing the constant from a small one with a couple of arithmetic +instructions. The default value is 0. @end table @node zSeries Options |