From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1005) id 4A18B3858D37; Fri, 3 Mar 2023 21:20:13 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4A18B3858D37 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1677878413; bh=uRSjTN7FM46vGF8GvSdOMfWpyy4wzGvM7WYVfJiZ7qk=; h=From:To:Subject:Date:From; b=Sm9zvaE/xKcrFU3GSH44jLso1N/MJaZ9hvEAwVS3HnsYG8wiRtZnapl5NarM7pD/A Rf98wvN1c9Ddfge266GvFeKg1fvFZZbfL1z3bcfOEM8skzRcGQb8wI8cQp7HV6HuxQ JxWZUWFyLsGXnwAlS3RcyENfYn/fP8t5CKnGFRQY= 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/work109)] 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/work109 X-Git-Oldrev: 5771f4b55d1cfa8be1b3c275cef2f1d4e4613f3c X-Git-Newrev: a6334aea2204ccec0d19d1738f9e2f12ecf2bab0 Message-Id: <20230303212013.4A18B3858D37@sourceware.org> Date: Fri, 3 Mar 2023 21:20:13 +0000 (GMT) List-Id: https://gcc.gnu.org/g:a6334aea2204ccec0d19d1738f9e2f12ecf2bab0 commit a6334aea2204ccec0d19d1738f9e2f12ecf2bab0 Author: Michael Meissner Date: Fri Mar 3 16:19:54 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 0865608f94a..29913168dd2 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 } } */