From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1666) id B338B3857354; Fri, 14 Oct 2022 10:47:28 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B338B3857354 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1665744448; bh=jb+qtqCLVypYQuRjDRi2qsrDWJ93KegoPhPu2blZWp8=; h=From:To:Subject:Date:From; b=evwBOaw1fV6oZCex5Q6klTg+4bbzn13/tpeB5LFhUICLCksHA8zKIaL4L3jpfJkvz 3VIx0nt5bNh/cRUEVGd8zmJf9jWYOOzyElWIiETqVHGc1Ef6CHp6r8UETdcZvTq/vS e3SmXQaMu+OFcxbJwaV3pBdSpgHov3Ge2jiTmbw8= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Richard Biener To: gcc-cvs@gcc.gnu.org Subject: [gcc r10-11035] tree-optimization/106112 - fix CSE from wider operation X-Act-Checkin: gcc X-Git-Author: Richard Biener X-Git-Refname: refs/heads/releases/gcc-10 X-Git-Oldrev: d0ef37c35b7ff7324b4567652380f32079d46088 X-Git-Newrev: 983d87530d8efbae6b5f4973c52edd1071d26add Message-Id: <20221014104728.B338B3857354@sourceware.org> Date: Fri, 14 Oct 2022 10:47:28 +0000 (GMT) List-Id: https://gcc.gnu.org/g:983d87530d8efbae6b5f4973c52edd1071d26add commit r10-11035-g983d87530d8efbae6b5f4973c52edd1071d26add Author: Richard Biener Date: Tue Jun 28 13:57:29 2022 +0200 tree-optimization/106112 - fix CSE from wider operation The following fixes a mistake in looking up an extended operand in the CSE of a truncated operation. 2022-06-28 Richard Biener PR tree-optimization/106112 * tree-ssa-sccvn.c (valueized_wider_op): Properly extend a constant operand according to its type. * gcc.dg/torture/pr106112.c: New testcase. (cherry picked from commit 2dbb45d6dc0d20dc159b3d8e27ebb6825074827a) Diff: --- gcc/testsuite/gcc.dg/torture/pr106112.c | 16 ++++++++++++++++ gcc/tree-ssa-sccvn.c | 2 +- 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/gcc/testsuite/gcc.dg/torture/pr106112.c b/gcc/testsuite/gcc.dg/torture/pr106112.c new file mode 100644 index 00000000000..bd7f63c0935 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr106112.c @@ -0,0 +1,16 @@ +/* { dg-do run } */ + +__INT32_TYPE__ a = 5, b, c, d; +__UINT64_TYPE__ e = 20862985922; +int main() +{ + __UINT32_TYPE__ f = 4294967292; + e = e | f; + c = -1 % ((~f ^ 4294967292) - (e - d)); + b = ~-~e % ~-d; + if (b) + a = 0; + if (a < 1) + __builtin_abort(); + return 0; +} diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c index e0cde2359cd..6df0617254c 100644 --- a/gcc/tree-ssa-sccvn.c +++ b/gcc/tree-ssa-sccvn.c @@ -4758,7 +4758,7 @@ valueized_wider_op (tree wide_type, tree op, bool allow_truncate) /* For constants simply extend it. */ if (TREE_CODE (op) == INTEGER_CST) - return wide_int_to_tree (wide_type, wi::to_wide (op)); + return wide_int_to_tree (wide_type, wi::to_widest (op)); return NULL_TREE; }