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Stop using -O instead of -O2 for MIPS

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Until clang 11 that was equivalent to -O2, but clang changed it to -O1 so
generated MIPS code will now be unnecessarily slow. It also removes a weird
special case from sys.mk.
This is similar to the D26471 change for debug kernels and should not change
anything since everything was previously building MIPS code at -O2 until the
clang 11 update.

Reviewed By:	trasz
Differential Revision: https://reviews.freebsd.org/D26749
This commit is contained in:
Alex Richardson 2020-10-13 08:14:33 +00:00
parent 085e62eb4f
commit 2cef3afd7b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=366664
1 changed files with 0 additions and 4 deletions
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share/mk/sys.mk
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@ -166,11 +166,7 @@ CC ?= c89
CFLAGS ?= -O
.else
CC ?= cc
.if ${MACHINE_CPUARCH} == "mips"
CFLAGS ?= -O -pipe
.else
CFLAGS ?= -O2 -pipe
.endif
.if defined(NO_STRICT_ALIASING)
CFLAGS += -fno-strict-aliasing
.endif