https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86348
Bug ID: 86348 Summary: [9 Regression] ICE: in curr_insn_transform, at lra-constraints.c:3919: unable to generate reloads for: vec_extractv4si_0_zext_sse4 Product: gcc Version: 9.0 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: i686-pc-linux-gnu Created attachment 44336 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44336&action=edit reduced testcase Compiler output: $ i686-pc-linux-gnu-gcc -O -mtune=athlon -msse4 testcase.c testcase.c: In function 'foo': testcase.c:9:1: error: unable to generate reloads for: } ^ (insn 12 11 13 2 (set (reg:DI 101) (zero_extend:DI (vec_select:SI (reg:V4SI 90 [ _4 ]) (parallel [ (const_int 0 [0]) ])))) "testcase.c":8 3463 {*vec_extractv4si_0_zext_sse4} (expr_list:REG_DEAD (reg:V4SI 90 [ _4 ]) (nil))) during RTL pass: reload testcase.c:9:1: internal compiler error: in curr_insn_transform, at lra-constraints.c:3919 0x58bc11 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) /repo/gcc-trunk/gcc/rtl-error.c:108 0xa6dbb1 curr_insn_transform /repo/gcc-trunk/gcc/lra-constraints.c:3919 0xa6e5ce lra_constraints(bool) /repo/gcc-trunk/gcc/lra-constraints.c:4906 0xa54c5c lra(_IO_FILE*) /repo/gcc-trunk/gcc/lra.c:2420 0x9f9119 do_reload /repo/gcc-trunk/gcc/ira.c:5465 0x9f9119 execute /repo/gcc-trunk/gcc/ira.c:5649 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. $ i686-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-i686/bin/i686-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-262221-checking-yes-rtl-df-extra-i686/bin/../libexec/gcc/i686-pc-linux-gnu/9.0.0/lto-wrapper Target: i686-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra --with-cloog --with-ppl --with-isl --with-sysroot=/usr/i686-pc-linux-gnu --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=i686-pc-linux-gnu --with-ld=/usr/bin/i686-pc-linux-gnu-ld --with-as=/usr/bin/i686-pc-linux-gnu-as --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-262221-checking-yes-rtl-df-extra-i686 Thread model: posix gcc version 9.0.0 20180628 (experimental) (GCC)