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Avoid legacy instruction penalties on x86

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Justine Tunney 2024-07-31 01:02:24 -07:00
parent 1fba310e22
commit 8d8aecb6d9
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GPG key ID: BE714B4575D6E328
16 changed files with 199 additions and 158 deletions
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8
libc/intrin/BUILD.mk
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@ -97,6 +97,14 @@ o/$(MODE)/libc/intrin/x86.o: private \
-fpatchable-function-entry=0 \
-Os
# avoid the legacy sse decoding penalty on avx systems
o//libc/intrin/dll.o \
o//libc/intrin/fds.o \
o//libc/intrin/mmap.o \
o//libc/intrin/demangle.o: private \
CFLAGS += \
-mgeneral-regs-only
# these assembly files are safe to build on aarch64
o/$(MODE)/libc/intrin/aarch64/%.o: libc/intrin/aarch64/%.S
@$(COMPILE) -AOBJECTIFY.S $(OBJECTIFY.S) $(OUTPUT_OPTION) -c $<