https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69610
Bug ID: 69610 Summary: [5/6 Regression] ICE: SIGSEGV in arm_reload_in_hi (arm.c:15446) with -march=armv3 -ftree-ter (-O0) Product: gcc Version: 6.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Host: x86_64-pc-linux-gnu Target: armv3-*-linux-gnueabi Created attachment 37546 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37546&action=edit reduced testcase $ armv7a-hardfloat-linux-gnueabi-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-hardfloat-linux-gnueabi-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-233030-checking-yes-rtl-df-nographite-armv7a-hardfloat/bin/../libexec/gcc/armv7a-hardfloat-linux-gnueabi/6.0.0/lto-wrapper Target: armv7a-hardfloat-linux-gnueabi Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-checking=yes,rtl,df --without-cloog --without-ppl --without-isl --with-float=hard --with-arch=armv7-a --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=armv7a-hardfloat-linux-gnueabi --with-ld=/usr/bin/armv7a-hardfloat-linux-gnueabi-ld --with-as=/usr/bin/armv7a-hardfloat-linux-gnueabi-as --with-sysroot=/usr/armv7a-hardfloat-linux-gnueabi --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-233030-checking-yes-rtl-df-nographite-armv7a-hardfloat Thread model: posix gcc version 6.0.0 20160201 (experimental) (GCC) $ armv7a-hardfloat-linux-gnueabi-gcc -march=armv3 -ftree-ter testcase.c ... ==11530== Invalid read of size 2 ==11530== at 0xEBB91D: arm_reload_in_hi(rtx_def**) (arm.c:15446) ==11530== by 0x1042574: gen_reload_inhi(rtx_def*, rtx_def*, rtx_def*) (arm.md:6422) ==11530== by 0x9CA5C2: operator() (recog.h:302) ==11530== by 0x9CA5C2: check_and_process_move (lra-constraints.c:1186) ==11530== by 0x9CA5C2: curr_insn_transform(bool) (lra-constraints.c:3453) ==11530== by 0x9CB446: lra_constraints(bool) (lra-constraints.c:4421) ==11530== by 0x9B729C: lra(_IO_FILE*) (lra.c:2277) ==11530== by 0x95EF39: do_reload (ira.c:5394) ==11530== by 0x95EF39: (anonymous namespace)::pass_reload::execute(function*) (ira.c:5565) ==11530== by 0xA70D27: execute_one_pass(opt_pass*) (passes.c:2336) ==11530== by 0xA712D7: execute_pass_list_1(opt_pass*) (passes.c:2410) ==11530== by 0xA712E9: execute_pass_list_1(opt_pass*) (passes.c:2411) ==11530== by 0xA71334: execute_pass_list(function*, opt_pass*) (passes.c:2421) ==11530== by 0x70D023: cgraph_node::expand() (cgraphunit.c:1975) ==11530== by 0x70DF67: output_in_order(bool) (cgraphunit.c:2213) ==11530== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==11530== testcase.c: In function 'foo': testcase.c:9:1: internal compiler error: Segmentation fault } ^ Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. This happens only at -O0. Tested revisions: trunk r233030 - ICE 5-branch r233025 - ICE 4_9-branch r233024 - OK 4_[876]-branch - OK