https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96744
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> --- Created attachment 49107 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49107&action=edit Enable spill to mask only under m_core_AVX512 this patch will fail cat test.c ---- #include<immintrin.h> void _mm512_2intersect_epi32_cut (__m512i __A, __m512i __B, __mmask16 *__U, __mmask16 *__M) { __builtin_ia32_2intersectd512 (__U, __M, (__v16si) __A, (__v16si) __B); } void _mm512_2intersect_epi64_cut (__m512i __A, __m512i __B, __mmask8 *__U, __mmask8 *__M) { __builtin_ia32_2intersectq512 (__U, __M, (__v8di) __A, (__v8di) __B); } --- with gcc -O2 -mavx512vp2intersect -mavx512bw -mavx512dq during RTL pass: reload dump file: avx-1_cut.c.287r.reload avx-1_cut.c: In function ‘_mm512_2intersect_epi32_cut’: avx-1_cut.c:7:1: internal compiler error: in emit_move_multi_word, at expr.c:3680 7 | } | ^ 0xd59c56 emit_move_multi_word /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/expr.c:3680 0xd5a2e3 emit_move_insn_1(rtx_def*, rtx_def*) /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/expr.c:3802 0xd5ab32 emit_move_insn(rtx_def*, rtx_def*) /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/expr.c:3935 0x1024e79 lra_emit_move(rtx_def*, rtx_def*) /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/lra.c:502 0x1043bb3 curr_insn_transform /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/lra-constraints.c:4440 0x10459d4 lra_constraints(bool) /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/lra-constraints.c:5031 0x1029896 lra(_IO_FILE*) /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/lra.c:2415 0xfba828 do_reload /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/ira.c:5525 0xfbad1e execute /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/ira.c:5711 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. Need to add define_insn for movp2qi/movp2hi? with -mavx512vp2intersect -mavx512bw -mavx512dq -m32 got different failure message. avx-1_cut.c: In function ‘_mm512_2intersect_epi32_cut’: avx-1_cut.c:7:1: internal compiler error: maximum number of generated reload insns per insn achieved (90) 7 | } | ^ 0x1045568 lra_constraints(bool) /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/lra-constraints.c:4954 0x1029896 lra(_IO_FILE*) /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/lra.c:2415 0xfba828 do_reload /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/ira.c:5525 0xfbad1e execute /export/users2/liuhongt/gcc/gnu-toolchain/tune_spill_to_mask/gcc/ira.c:5711 Please submit a full bug report, Not sure about this one.
