From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1005) id B3C133858D28; Fri, 3 Mar 2023 21:22:32 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B3C133858D28 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1677878552; bh=e9v6mHWA/qofeg1LaApppRIqKPu9TifGkr5lnY3JOIo=; h=From:To:Subject:Date:From; b=gSoIZ91Ts1hPAsNTyO7Bu74LoW5hFNdpNi3ZWIc+/MTVKpt7I2cRpg33We9fLWo6W FYmaoE5ZnklRYMcdxK+9TmvfGioSoCGjoNEBe8+KNPHpK3VUADetFPMSAOcsFnObxi bMzNGmNCSVuqNA7G25bSYmu9GsSMzbD3qyzZEmvU= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Michael Meissner To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/meissner/heads/dmf009)] Fix splat of extract for long long and double. X-Act-Checkin: gcc X-Git-Author: Michael Meissner X-Git-Refname: refs/users/meissner/heads/dmf009 X-Git-Oldrev: 99b7f6feeeceec63f65127b31acdbc83d5498f31 X-Git-Newrev: 2c8013daa9d831f82ded8d47575c84593a8875f7 Message-Id: <20230303212232.B3C133858D28@sourceware.org> Date: Fri, 3 Mar 2023 21:22:32 +0000 (GMT) List-Id: https://gcc.gnu.org/g:2c8013daa9d831f82ded8d47575c84593a8875f7 commit 2c8013daa9d831f82ded8d47575c84593a8875f7 Author: Michael Meissner Date: Fri Mar 3 16:22:16 2023 -0500 Fix splat of extract for long long and double. 2023-03-03 Michael Meissner gcc/ PR target/99293 * gcc/config/vsx.md (vsx_splat_extract_): New combiner insn. gcc/testsuite/ PR target/108958 * gcc.target/powerpc/pr99293.c: New test. Diff: --- gcc/config/rs6000/vsx.md | 18 ++++++++++++++++++ gcc/testsuite/gcc.target/powerpc/pr99293.c | 21 +++++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/gcc/config/rs6000/vsx.md b/gcc/config/rs6000/vsx.md index 1ab8dc373c0..9ebbd58243b 100644 --- a/gcc/config/rs6000/vsx.md +++ b/gcc/config/rs6000/vsx.md @@ -4573,6 +4573,24 @@ "lxvdsx %x0,%y1" [(set_attr "type" "vecload")]) +;; Optimize SPLAT of an extract from a V2DF/V2DI vector with a constant element +(define_insn "*vsx_splat_extract_" + [(set (match_operand:VSX_D 0 "vsx_register_operand" "=wa") + (vec_duplicate:VSX_D + (vec_select: + (match_operand:VSX_D 1 "vsx_register_operand" "wa") + (parallel [(match_operand 2 "const_0_to_1_operand" "n")]))))] + "VECTOR_MEM_VSX_P (mode)" +{ + int which_word = INTVAL (operands[2]); + if (!BYTES_BIG_ENDIAN) + which_word = 1 - which_word; + + operands[3] = GEN_INT (which_word ? 3 : 0); + return "xxpermdi %x0,%x1,%x1,%3"; +} + [(set_attr "type" "vecperm")]) + ;; V4SI splat support (define_insn "vsx_splat_v4si" [(set (match_operand:V4SI 0 "vsx_register_operand" "=wa,wa") diff --git a/gcc/testsuite/gcc.target/powerpc/pr99293.c b/gcc/testsuite/gcc.target/powerpc/pr99293.c new file mode 100644 index 00000000000..582bebb88ef --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/pr99293.c @@ -0,0 +1,21 @@ +/* { dg-require-effective-target powerpc_vsx_ok } */ +/* { dg-options "-O2 -mvsx" } */ + +/* Test for PR 99263, which wants to do: + __builtin_vec_splats (__builtin_vec_extract (v, n)) + + where v is a V2DF or V2DI vector and n is either 0 or 1. Previously the + compiler would do a direct move to the GPR registers to select the item and a + direct move from the GPR registers to do the splat. */ + +vector long long splat_dup_l_0 (vector long long v) +{ + return __builtin_vec_splats (__builtin_vec_extract (v, 0)); +} + +vector long long splat_dup_l_1 (vector long long v) +{ + return __builtin_vec_splats (__builtin_vec_extract (v, 1)); +} + +/* { dg-final { scan-assembler-times "xxpermdi" 2 } } */