Changes in the v6 patch: 1. Update SI/DI broadcast with AVX. 2. Require non-standard SSE constant integer broadcast with AVX. 3. Use nonimmediate_operand in vec_duplicate<mode> and verify that it never fails.
Changes in the v5 patch: 1. Allow AVX with SI/DI broadcast. 2. Add a comment for broadcasting to V64QI and V32HI with AVX512F, but without AVX512BW. --- 1. Update move expanders to convert the CONST_WIDE_INT and CONST_VECTO operands to vector broadcast from an integer with AVX2. 2. Add ix86_gen_scratch_sse_rtx to return a scratch SSE register which won't increase stack alignment requirement and blocks transformation by the combine pass. A small benchmark: https://gitlab.com/x86-benchmarks/microbenchmark/-/tree/memset/broadcast shows that broadcast is a little bit faster on Intel Core i7-8559U: $ make gcc -g -I. -O2 -c -o test.o test.c gcc -g -c -o memory.o memory.S gcc -g -c -o broadcast.o broadcast.S gcc -g -c -o vec_dup_sse2.o vec_dup_sse2.S gcc -o test test.o memory.o broadcast.o vec_dup_sse2.o ./test memory : 147215 broadcast : 121213 vec_dup_sse2: 171366 $ broadcast is also smaller: $ size memory.o broadcast.o text data bss dec hex filename 132 0 0 132 84 memory.o 122 0 0 122 7a broadcast.o $ 3. Update PR 87767 tests to expect integer broadcast instead of broadcast from memory. 4. Update avx512f_cond_move.c to expect integer broadcast. A small benchmark: https://gitlab.com/x86-benchmarks/microbenchmark/-/tree/vpaddd/broadcast shows that integer broadcast is faster than embedded memory broadcast: $ make gcc -g -I. -O2 -march=skylake-avx512 -c -o test.o test.c gcc -g -c -o memory.o memory.S gcc -g -c -o broadcast.o broadcast.S gcc -o test test.o memory.o broadcast.o ./test memory : 425538 broadcast : 375260 $ Add vec_duplicate<mode> expander for SSE2 if we can move from GPR to SSE register directly. H.J. Lu (2): x86: Convert CONST_WIDE_INT/CONST_VECTOR to broadcast x86: Add vec_duplicate<mode> expander gcc/config/i386/i386-expand.c | 193 ++++++++++++++++-- gcc/config/i386/i386-protos.h | 4 + gcc/config/i386/i386.c | 13 ++ gcc/config/i386/sse.md | 31 +++ .../i386/avx512f-broadcast-pr87767-1.c | 7 +- .../i386/avx512f-broadcast-pr87767-5.c | 5 +- .../gcc.target/i386/avx512f_cond_move.c | 4 +- .../i386/avx512vl-broadcast-pr87767-1.c | 12 +- .../i386/avx512vl-broadcast-pr87767-5.c | 9 +- gcc/testsuite/gcc.target/i386/pr100865-1.c | 13 ++ gcc/testsuite/gcc.target/i386/pr100865-10a.c | 33 +++ gcc/testsuite/gcc.target/i386/pr100865-10b.c | 7 + gcc/testsuite/gcc.target/i386/pr100865-11a.c | 23 +++ gcc/testsuite/gcc.target/i386/pr100865-11b.c | 8 + gcc/testsuite/gcc.target/i386/pr100865-11c.c | 8 + gcc/testsuite/gcc.target/i386/pr100865-12a.c | 20 ++ gcc/testsuite/gcc.target/i386/pr100865-12b.c | 8 + gcc/testsuite/gcc.target/i386/pr100865-12c.c | 8 + gcc/testsuite/gcc.target/i386/pr100865-2.c | 14 ++ gcc/testsuite/gcc.target/i386/pr100865-3.c | 15 ++ gcc/testsuite/gcc.target/i386/pr100865-4a.c | 16 ++ gcc/testsuite/gcc.target/i386/pr100865-4b.c | 9 + gcc/testsuite/gcc.target/i386/pr100865-5a.c | 16 ++ gcc/testsuite/gcc.target/i386/pr100865-5b.c | 9 + gcc/testsuite/gcc.target/i386/pr100865-6a.c | 16 ++ gcc/testsuite/gcc.target/i386/pr100865-6b.c | 9 + gcc/testsuite/gcc.target/i386/pr100865-6c.c | 16 ++ gcc/testsuite/gcc.target/i386/pr100865-7a.c | 17 ++ gcc/testsuite/gcc.target/i386/pr100865-7b.c | 9 + gcc/testsuite/gcc.target/i386/pr100865-7c.c | 17 ++ gcc/testsuite/gcc.target/i386/pr100865-8a.c | 24 +++ gcc/testsuite/gcc.target/i386/pr100865-8b.c | 7 + gcc/testsuite/gcc.target/i386/pr100865-8c.c | 7 + gcc/testsuite/gcc.target/i386/pr100865-9a.c | 25 +++ gcc/testsuite/gcc.target/i386/pr100865-9b.c | 7 + gcc/testsuite/gcc.target/i386/pr100865-9c.c | 7 + 36 files changed, 621 insertions(+), 25 deletions(-) create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-1.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-10a.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-10b.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-11a.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-11b.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-11c.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-12a.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-12b.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-12c.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-2.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-3.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-4a.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-4b.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-5a.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-5b.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-6a.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-6b.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-6c.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-7a.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-7b.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-7c.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-8a.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-8b.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-8c.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-9a.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-9b.c create mode 100644 gcc/testsuite/gcc.target/i386/pr100865-9c.c -- 2.31.1
