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From: Eric Botcazou <ebotcazou@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r10-11052] Fix VCOND expansion Date: Fri, 21 Oct 2022 14:10:18 +0000 (GMT) [thread overview] Message-ID: <20221021141018.5165B3856DC0@sourceware.org> (raw) https://gcc.gnu.org/g:5076eefe23b96279e34351a2a044858bae3251ae commit r10-11052-g5076eefe23b96279e34351a2a044858bae3251ae Author: Eric Botcazou <ebotcazou@adacore.com> Date: Fri Oct 21 15:46:37 2022 +0200 Fix VCOND expansion Instead of only allowing the signed optab to provide EQ/NE compares, we allow both here since there seems to be no documented canonicalization. gcc/ PR target/107336 * optabs.c (expand_vec_cond_expr): Query both VCOND and VCONDU for EQ and NE. Diff: --- gcc/optabs.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/gcc/optabs.c b/gcc/optabs.c index 64f23d2c293..93f99423727 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -5902,6 +5902,14 @@ expand_vec_cond_expr (tree vec_cond_type, tree op0, tree op1, tree op2, GET_MODE_NUNITS (cmp_op_mode))); icode = get_vcond_icode (mode, cmp_op_mode, unsignedp); + /* Some targets do not have vcondeq and only vcond with NE/EQ + but not vcondu, so make sure to also try vcond here as + vcond_icode_p would canonicalize the optab query to. */ + if (icode == CODE_FOR_nothing + && (tcode == NE_EXPR || tcode == EQ_EXPR) + && ((icode = get_vcond_icode (mode, cmp_op_mode, !unsignedp)) + != CODE_FOR_nothing)) + unsignedp = !unsignedp; if (icode == CODE_FOR_nothing) { if (tcode == LT_EXPR
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