On March 18, 2020 6:20:29 PM GMT+01:00, Maxim Kuvyrkov <maxim.kuvyr...@linaro.org> wrote: > >> On 17 Mar 2020, at 17:40, Richard Biener <rguent...@suse.de> wrote: >> >> >> This adds a missing type conversion to build_fold_addr_expr and >adjusts >> fallout - build_fold_addr_expr was used as a convenience to build an >> ADDR_EXPR but some callers do not expect the result to be simplified >> to something else. >> >> Bootstrapped on x86_64-unknown-linux-gnu, testin in progress. >> >> This is the 3rd or 4th attempt and I hope to have catched all fallout > >> with this. I think it's inevitable we fix the mistake in >> build_fold_addr_expr. >> >> Richard. >> >> 2020-03-17 Richard Biener <rguent...@suse.de> >> >> PR middle-end/94188 >> * fold-const.c (build_fold_addr_expr): Convert address to >> correct type. >> * asan.c (maybe_create_ssa_name): Strip useless type conversions. >> * gimple-fold.c (gimple_fold_stmt_to_constant_1): Use build1 >> to build the ADDR_EXPR which we don't really want to simplify. >> * tree-ssa-dom.c (record_equivalences_from_stmt): Likewise. >> * tree-ssa-loop-im.c (gather_mem_refs_stmt): Likewise. >> * tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Likewise. >> (simplify_builtin_call): Strip useless type conversions. >> * tree-ssa-strlen.c (new_strinfo): Likewise. >> >> * gcc.dg/pr94188.c: New testcase. > >Hi Richard, > >This breaks Linux kernel build on 32-bit ARM: > >00:01:29 ./include/linux/string.h:333:9: internal compiler error: in >gen_movsi, at config/arm/arm.md:6291 >00:01:29 make[2]: *** [sound/drivers/serial-u16550.o] Error 1 > >Would you please investigate? Let me know if you need any help >reproducing the problem.
Please file a bug report with preprocessed source and instructions how to configure a cross to reproduce this. The change has caused more fallout than I expected... Thanks, Richard. >Kernel’s build line is (assuming cross-compilation): >make CC=/path/to/arm-linux-gnueabihf-gcc ARCH=arm >CROSS_COMPILE=arm-linux-gnueabihf- HOSTCC=gcc allyesconfig > >Regards, > >-- >Maxim Kuvyrkov >https://www.linaro.org
