procyberian/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

doc: RISC-V: Document that -mcpu doesn't override -march or -mtune

Browse source 
This came up recently as Edwin was looking through the test suite.  A
few of us were talking about this during the patchwork meeting and were
surprised.  Looks like this is the desired behavior, so let's at least
document it.

gcc/ChangeLog:

	* doc/invoke.texi: Document -mcpu.

Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Palmer Dabbelt 2024-02-20 07:45:38 -08:00 • committed by Kito Cheng
parent 33abf74108
commit 1c5da882bf
1 changed files with 2 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
gcc/doc/invoke.texi
View file

@ -30750,6 +30750,8 @@ Permissible values for this option are: @samp{sifive-e20}, @samp{sifive-e21},
@samp{sifive-u54}, @samp{sifive-u74}, @samp{sifive-x280}, @samp{sifive-xp450},
@samp{sifive-x670}.
Note that @option{-mcpu} does not override @option{-march} or @option{-mtune}.
@opindex mtune
@item -mtune=@var{processor-string}
Optimize the output for the given processor, specified by microarchitecture or