From: "Kong, Lingling" <lingling.kong@intel.com>
To: "Liu, Hongtao" <hongtao.liu@intel.com>,
"gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>,
"richard.guenther@gmail.com" <richard.guenther@gmail.com>
Subject: [PATCH] middle-end: Add MULT_EXPR recognition for cond scalar reduction
Date: Thu, 25 Aug 2022 09:39:50 +0000 [thread overview]
Message-ID: <DM4PR11MB5487C73F15F6205425B57CE3EC729@DM4PR11MB5487.namprd11.prod.outlook.com> (raw)
Message-ID: <20220825093950.RtNNimYxNRKVyyMp8zlh3WmTUqOaOxMlFFxTQTCPmVg@z> (raw)
Hi,
The conditional mult reduction cannot be recognized with current GCC. The following loop cannot be vectorized.
Now add MULT_EXPR recognition for conditional scalar reduction.
float summa(int n, float *arg1, float *arg2)
{
int i;
float res1 = 1.0;
for(i = 0; i < n; i++) {
if(arg2[i])
res1 *= arg1[i];
}
return res1;
}
gcc/ChangeLog:
* tree-if-conv.cc (is_cond_scalar_reduction): Add MULT_EXPR
recognition.
gcc/testsuite/ChangeLog:
* gcc.dg/tree-ssa/gen-vect-34.c: New test.
* gcc.dg/vect/vect-ifcvt-18.c: New test.
---
gcc/testsuite/gcc.dg/tree-ssa/gen-vect-34.c | 16 +++++++++
gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c | 38 +++++++++++++++++++++
gcc/tree-if-conv.cc | 1 +
3 files changed, 55 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/tree-ssa/gen-vect-34.c
create mode 100644 gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/gen-vect-34.c b/gcc/testsuite/gcc.dg/tree-ssa/gen-vect-34.c
new file mode 100644
index 00000000000..8d2d36401fe
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/gen-vect-34.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-Ofast -fdump-tree-vect-details" } */
+/* { dg-additional-options "-mavx2" { target { x86_64-*-* i?86-*-* } }
+} */
+
+float summul(int n, float *arg1, float *arg2)
+{
+ int i;
+ float res1 = 1.0;
+ for(i = 0; i < n; i++) {
+ if(arg2[i])
+ res1 *= arg1[i];
+ }
+ return res1;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" {
+target { ! { avr-*-* pru-*-* } } } } } */
diff --git a/gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c b/gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c
new file mode 100644
index 00000000000..c1d3c27d819
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c
@@ -0,0 +1,38 @@
+/* { dg-require-effective-target vect_condition } */
+/* { dg-require-effective-target vect_float } */
+/* { dg-additional-options "-Ofast -mavx" { target avx_runtime } } */
+
+
+int A0[4] = {36,39,42,45};
+int B0[4] = {42,42,0,42};
+float A1[8] = {36,39,42,45,43,32,21,12}; float B1[8] =
+{42,42,0,42,42,42,0,42}; double A2[16] =
+{36,39,42,45,43,32,21,12,23,34,45,56,42,78,89,11};
+double B2[16] = {42,42,0,42,42,42,42,42,42,42,42,42,0,42,42,42};
+
+int main ()
+{
+ int i, j;
+ int res0 = 1;
+ float res1 = 1.0;
+ double res2 = 1.0;
+
+ for (i = 0; i < 4; i++)
+ if (B0[i])
+ res0 *= A0[i];
+
+ for (i = 0; i < 8; i++)
+ if (B1[i])
+ res1 *= A1[i];
+
+ for (i = 0; i < 16; i++)
+ if (B2[i])
+ res2 *= A2[i];
+ /* check results: */
+ if (res0 != 63180 || res1 != 1043228160.000000
+ ||res2 != 3296728515318523101184.000000)
+ __builtin_abort ();
+ return 0;
+}
+
+/* { dg-final { scan-tree-dump "vectorized 3 loops" "vect" { target
+i?86-*-* x86_64-*-* } } } */
diff --git a/gcc/tree-if-conv.cc b/gcc/tree-if-conv.cc index 1c8e1a45234..bac29fb5574 100644
--- a/gcc/tree-if-conv.cc
+++ b/gcc/tree-if-conv.cc
@@ -1739,6 +1739,7 @@ is_cond_scalar_reduction (gimple *phi, gimple **reduc, tree arg_0, tree arg_1,
if (reduction_op != PLUS_EXPR
&& reduction_op != MINUS_EXPR
+ && reduction_op != MULT_EXPR
&& reduction_op != BIT_IOR_EXPR
&& reduction_op != BIT_XOR_EXPR
&& reduction_op != BIT_AND_EXPR)
--
2.18.2
next reply other threads:[~2022-08-25 9:39 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-25 9:39 Kong, Lingling [this message]
2022-08-25 9:39 ` Kong, Lingling
2022-08-31 7:14 ` Kong, Lingling
2022-08-31 16:08 ` Jeff Law
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=DM4PR11MB5487C73F15F6205425B57CE3EC729@DM4PR11MB5487.namprd11.prod.outlook.com \
--to=lingling.kong@intel.com \
--cc=gcc-patches@gcc.gnu.org \
--cc=hongtao.liu@intel.com \
--cc=richard.guenther@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).