list optimisation flags to try out (not filtered, contains all defined by gcc)

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 84 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index dc91329..3844beb 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,9 @@
+# Copying and distribution of this file, with or without modification,
+# are permitted in any medium without royalty provided the copyright
+# notice and this notice are preserved.  This file is offered as-is,
+# without any warranty.
+
+
 WARN = -Wall -Wextra -pedantic -Wdouble-promotion -Wformat=2 -Winit-self -Wmissing-include-dirs  \
        -Wtrampolines -Wfloat-equal -Wshadow -Wmissing-prototypes -Wmissing-declarations          \
        -Wredundant-decls -Wnested-externs -Winline -Wno-variadic-macros -Wswitch-default         \
@@ -11,6 +17,84 @@ WARN = -Wall -Wextra -pedantic -Wdouble-promotion -Wformat=2 -Winit-self -Wmissi
 FLAGS = -std=gnu99 $(WARN)
 
 
+# TODO optimisation flags to test, and naturally -ON
+#          -faggressive-loop-optimizations -falign-functions[=N]
+#          -falign-jumps[=N]
+#          -falign-labels[=N] -falign-loops[=N]
+#          -fassociative-math -fauto-inc-dec -fbranch-probabilities
+#          -fbranch-target-load-optimize -fbranch-target-load-optimize2
+#          -fbtr-bb-exclusive -fcaller-saves
+#          -fcheck-data-deps -fcombine-stack-adjustments -fconserve-stack
+#          -fcompare-elim -fcprop-registers -fcrossjumping
+#          -fcse-follow-jumps -fcse-skip-blocks -fcx-fortran-rules
+#          -fcx-limited-range
+#          -fdata-sections -fdce -fdelayed-branch
+#          -fdelete-null-pointer-checks -fdevirtualize -fdevirtualize-speculatively -fdse
+#          -fearly-inlining -fipa-sra -fexpensive-optimizations -ffat-lto-objects
+#          -ffast-math -ffinite-math-only -ffloat-store -fexcess-precision=STYLE
+#          -fforward-propagate -ffp-contract=STYLE -ffunction-sections
+#          -fgcse -fgcse-after-reload -fgcse-las -fgcse-lm -fgraphite-identity
+#          -fgcse-sm -fhoist-adjacent-loads -fif-conversion
+#          -fif-conversion2 -findirect-inlining
+#          -finline-functions -finline-functions-called-once -finline-limit=N
+#          -finline-small-functions -fipa-cp -fipa-cp-clone
+#          -fipa-pta -fipa-profile -fipa-pure-const -fipa-reference
+#          -fira-algorithm=ALGORITHM
+#          -fira-region=REGION -fira-hoist-pressure
+#          -fira-loop-pressure -fno-ira-share-save-slots
+#          -fno-ira-share-spill-slots -fira-verbose=N
+#          -fisolate-erroneous-paths-dereference -fisolate-erroneous-paths-attribute
+#          -fivopts -fkeep-inline-functions -fkeep-static-consts -flive-range-shrinkage
+#          -floop-block -floop-interchange -floop-strip-mine -floop-nest-optimize
+#          -floop-parallelize-all -flto -flto-compression-level
+#          -flto-partition=ALG -flto-report -flto-report-wpa -fmerge-all-constants
+#          -fmerge-constants -fmodulo-sched -fmodulo-sched-allow-regmoves
+#          -fmove-loop-invariants -fno-branch-count-reg
+#          -fno-defer-pop -fno-function-cse -fno-guess-branch-probability
+#          -fno-inline -fno-math-errno -fno-peephole -fno-peephole2
+#          -fno-sched-interblock -fno-sched-spec -fno-signed-zeros
+#          -fno-toplevel-reorder -fno-trapping-math -fno-zero-initialized-in-bss
+#          -fomit-frame-pointer -foptimize-sibling-calls
+#          -fpartial-inlining -fpeel-loops -fpredictive-commoning
+#          -fprefetch-loop-arrays -fprofile-report
+#          -fprofile-correction -fprofile-dir=PATH -fprofile-generate
+#          -fprofile-generate=PATH
+#          -fprofile-use -fprofile-use=PATH -fprofile-values -fprofile-reorder-functions
+#          -freciprocal-math -free -frename-registers -freorder-blocks
+#          -freorder-blocks-and-partition -freorder-functions
+#          -frerun-cse-after-loop -freschedule-modulo-scheduled-loops
+#          -frounding-math -fsched2-use-superblocks -fsched-pressure
+#          -fsched-spec-load -fsched-spec-load-dangerous
+#          -fsched-stalled-insns-dep[=N] -fsched-stalled-insns[=N]
+#          -fsched-group-heuristic -fsched-critical-path-heuristic
+#          -fsched-spec-insn-heuristic -fsched-rank-heuristic
+#          -fsched-last-insn-heuristic -fsched-dep-count-heuristic
+#          -fschedule-insns -fschedule-insns2 -fsection-anchors
+#          -fselective-scheduling -fselective-scheduling2
+#          -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops
+#          -fshrink-wrap -fsignaling-nans -fsingle-precision-constant
+#          -fsplit-ivs-in-unroller -fsplit-wide-types -fstack-protector
+#          -fstack-protector-all -fstack-protector-strong -fstrict-aliasing
+#          -fstrict-overflow -fthread-jumps -ftracer -ftree-bit-ccp
+#          -ftree-builtin-call-dce -ftree-ccp -ftree-ch
+#          -ftree-coalesce-inline-vars -ftree-coalesce-vars -ftree-copy-prop
+#          -ftree-copyrename -ftree-dce -ftree-dominator-opts -ftree-dse
+#          -ftree-forwprop -ftree-fre -ftree-loop-if-convert
+#          -ftree-loop-if-convert-stores -ftree-loop-im
+#          -ftree-phiprop -ftree-loop-distribution -ftree-loop-distribute-patterns
+#          -ftree-loop-ivcanon -ftree-loop-linear -ftree-loop-optimize
+#          -ftree-loop-vectorize
+#          -ftree-parallelize-loops=N -ftree-pre -ftree-partial-pre -ftree-pta
+#          -ftree-reassoc -ftree-sink -ftree-slsr -ftree-sra
+#          -ftree-switch-conversion -ftree-tail-merge -ftree-ter
+#          -ftree-vectorize -ftree-vrp
+#          -funit-at-a-time -funroll-all-loops -funroll-loops
+#          -funsafe-loop-optimizations -funsafe-math-optimizations -funswitch-loops
+#          -fvariable-expansion-in-unroller -fvect-cost-model -fvpt -fweb
+#          -fwhole-program -fwpa -fuse-ld=LINKER -fuse-linker-plugin
+
+
+
 OBJ = digest files generalised-spec hex state