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Split Makefile symbol CFLAGS_VECTOR into two symbols.

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Replace CFLAGS_VECTOR with CFLAGS_UNROLL_LOOPS and CFLAGS_VECTORIZE,
allowing us to distinguish whether we want to apply -funroll-loops,
-ftree-vectorize, or both to a particular source file.  Up to now
the only consumer of the symbol has been checksum.c which wants
both, so that there was no need to distinguish; but that's about
to change.

Amit Khandekar, reviewed and edited a little by me

Discussion: https://postgr.es/m/CAJ3gD9evtA_vBo+WMYMyT-u=keHX7-r8p2w7OSRfXf42LTwCZQ@mail.gmail.com
This commit is contained in:
Tom Lane
2020-09-06 21:28:16 -04:00
parent 784b1ba1a2
commit 695de5d1ed
4 changed files with 34 additions and 22 deletions
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3
src/Makefile.global.in
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@ -259,7 +259,8 @@ SUN_STUDIO_CC = @SUN_STUDIO_CC@
CXX = @CXX@
CFLAGS = @CFLAGS@
CFLAGS_SL = @CFLAGS_SL@
CFLAGS_VECTOR = @CFLAGS_VECTOR@
CFLAGS_UNROLL_LOOPS = @CFLAGS_UNROLL_LOOPS@
CFLAGS_VECTORIZE = @CFLAGS_VECTORIZE@
CFLAGS_SSE42 = @CFLAGS_SSE42@
CFLAGS_ARMV8_CRC32C = @CFLAGS_ARMV8_CRC32C@
PERMIT_DECLARATION_AFTER_STATEMENT = @PERMIT_DECLARATION_AFTER_STATEMENT@

4
src/backend/storage/page/Makefile
View File

@ -19,5 +19,5 @@ OBJS = \
include $(top_srcdir)/src/backend/common.mk
# important optimizations flags for checksum.c
checksum.o: CFLAGS += ${CFLAGS_VECTOR}
# Provide special optimization flags for checksum.c
checksum.o: CFLAGS += ${CFLAGS_UNROLL_LOOPS} ${CFLAGS_VECTORIZE}