https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93505
--- Comment #6 from Zdenek Sojka <zsojka at seznam dot cz> --- (In reply to Zdenek Sojka from comment #5) > Created attachment 47738 [details] > only partially reduced testcase, with always defined shifts > > It also needs more flags to reproduce: > -Os -fno-expensive-optimizations -fno-forward-propagate -fno-inline > -fno-ipa-vrp -fno-tree-bit-ccp -fno-tree-ter > > (not all of those are needed; switching to -Og might help to reduce the > number of needed flags) > > I've just deleted my gcc repo + binaries, so I can't test it atm. Actually, only -Og is enough even for that testcase: $ powerpc64le-unknown-linux-gnu-gcc -Og testcase-min1.c -static -w && ./a.out 00000000000000000000000000000000 (wrong) $ powerpc64le-unknown-linux-gnu-gcc -O0 testcase-min1.c -static -w && ./a.out 00000000000000010000000000000000 (correct)
