Hello,
Patch limits constraint for scalar operand in split to AVX-512VL.
Boostrap/regtest in progress for x86_64/ia32.
I'll check it in if pass.
PR target/71346.
gcc/
* config/i386/sse.md (define_insn_and_split "*vec_extractv4sf_0"): Use
`Yv' for scalar operand.
testsuite/
* gcc.target/i386/prr71346.c: New test.
--
Thanks, K
commit 6c0021bea7a5be8d9a10ef3f2fb30c1228f53d48
Author: Kirill Yukhin <kirill.yuk...@intel.com>
Date: Mon May 30 16:31:28 2016 +0300
AVX-512. Fix PR target/71346.
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index b348f2d..1267897 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -6837,7 +6837,7 @@
"operands[1] = gen_lowpart (SFmode, operands[1]);")
(define_insn_and_split "*sse4_1_extractps"
- [(set (match_operand:SF 0 "nonimmediate_operand" "=rm,rm,rm,v,v")
+ [(set (match_operand:SF 0 "nonimmediate_operand" "=rm,rm,rm,Yv,Yv")
(vec_select:SF
(match_operand:V4SF 1 "register_operand" "Yr,*x,v,0,v")
(parallel [(match_operand:SI 2 "const_0_to_3_operand"
"n,n,n,n,n")])))]
diff --git a/gcc/testsuite/gcc.target/i386/pr71346.c
b/gcc/testsuite/gcc.target/i386/pr71346.c
new file mode 100644
index 0000000..0a15869
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr71346.c
@@ -0,0 +1,25 @@
+/* PR target/71346 */
+/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-options "-O2 -ftree-vectorize -ffast-math -march=knl" } */
+
+typedef int rvec[3];
+int a;
+float b, c, d, g;
+rvec *e, *f;
+void fn2(float h, float g);
+
+void
+fn1()
+{
+ float h;
+ for (; a; a++) {
+ h += e[a][0] * f[a][0];
+ b += e[a][0] * f[a][1];
+ c += e[a][2] * f[a][0];
+ d += e[a][2] * f[a][1];
+ g += e[a][2] * f[a][2];
+ }
+ fn2(h, g);
+}
+
+/* { dg-final { scan-assembler-not "vshufps\[
\\t\]+\[^\n\]*%\xmm(?:1\[6-9\]|\[2-3\]\[0-9\])" } } */
