> 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. 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
