From 5804d302275218ceccce0552848980913ee63174 Mon Sep 17 00:00:00 2001
From: Samuel Aubertin <samuel.aubertin@gmail.com>
Date: Tue, 5 Apr 2022 12:43:54 +0200
Subject: [PATCH] Bruteforce optimization options

---
 testflags.sh | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100755 testflags.sh

diff --git a/testflags.sh b/testflags.sh
new file mode 100755
index 0000000..07fca8e
--- /dev/null
+++ b/testflags.sh
@@ -0,0 +1,65 @@
+O2FLAGS="-fno-align-functions
+-fno-align-jumps 
+-fno-align-labels
+-fno-align-loops 
+-fno-caller-saves 
+-fno-code-hoisting 
+-fno-crossjumping 
+-fno-cse-follow-jumps 
+-fno-cse-skip-blocks 
+-fno-delete-null-pointer-checks 
+-fno-devirtualize 
+-fno-devirtualize-speculatively 
+-fno-expensive-optimizations 
+-fno-finite-loops 
+-fno-gcse  -fno-gcse-lm  
+-fno-hoist-adjacent-loads 
+-fno-inline-functions 
+-fno-inline-small-functions 
+-fno-indirect-inlining 
+-fno-ipa-bit-cp  -fno-ipa-cp  -fno-ipa-icf 
+-fno-ipa-ra  -fno-ipa-sra  -fno-ipa-vrp 
+-fno-isolate-erroneous-paths-dereference 
+-fno-lra-remat 
+-fno-optimize-sibling-calls 
+-fno-optimize-strlen 
+-fno-partial-inlining 
+-fno-peephole2 
+-fno-reorder-blocks-and-partition
+-fno-reorder-functions 
+-fno-rerun-cse-after-loop  
+-fno-schedule-insns  -fno-schedule-insns2 
+-fno-sched-interblock  -fno-sched-spec 
+-fno-store-merging 
+-fno-strict-aliasing 
+-fno-thread-jumps 
+-fno-tree-builtin-call-dce 
+-fno-tree-loop-vectorize 
+-fno-tree-pre 
+-fno-tree-slp-vectorize 
+-fno-tree-switch-conversion
+-fno-tree-tail-merge 
+-fno-tree-vrp"
+#-fno-reorder-blocks-algorithm=stc 
+#-fno-vect-cost-model=very-cheap"
+
+O3FLAGS="-fno-gcse-after-reload 
+-fno-ipa-cp-clone
+-fno-loop-interchange 
+-fno-loop-unroll-and-jam 
+-fno-peel-loops 
+-fno-predictive-commoning 
+-fno-split-loops 
+-fno-split-paths 
+-fno-tree-loop-distribution 
+-fno-tree-partial-pre 
+-fno-unswitch-loops 
+-fno-version-loops-for-strides"
+#-fno-vect-cost-model=dynamic 
+
+#for i in $O2FLAGS; do 
+#	rm spectre_v2-gcc-O2 > /dev/null; CFLAGS="$i" make spectre_v2-gcc-O2; ./spectre_v2-gcc-O2 2> /dev/null > /dev/null && echo -e "\033[32m ok $i\033[0m"
+#done
+for i in $O3FLAGS; do 
+	rm spectre_v2-gcc-O3 > /dev/null; CFLAGS="$i" make spectre_v2-gcc-O3; ./spectre_v2-gcc-O3 2> /dev/null > /dev/null && echo -e "\033[32m ok $i\033[0m"
+done