From 09d4cbcde094daa49bd7df8dcf22aa051c18a6ba Mon Sep 17 00:00:00 2001
From: Kirill Yukhin <kirill.yukhin@intel.com>
Date: Mon, 7 Dec 2015 11:12:41 +0000
Subject: [PATCH] re PR target/68627 ([i386, AVX-512] Illegal insn generated
 while compiling spec2k6/437.leslie3d for KNL)

PR target/68627

gcc/
	* config/i386/sse.md: Make 'v' alternative work on 'avx512f' ISA only.
	Force destination to 512 bits register.
gcc/testsuite/
	* gfortran.dg/pr68627.f: New test.

From-SVN: r231361
---
 gcc/ChangeLog                       |  6 ++++++
 gcc/config/i386/sse.md              |  9 +++++----
 gcc/testsuite/ChangeLog             |  5 +++++
 gcc/testsuite/gfortran.dg/pr68627.f | 18 ++++++++++++++++++
 4 files changed, 34 insertions(+), 4 deletions(-)
 create mode 100644 gcc/testsuite/gfortran.dg/pr68627.f

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2c7c82356e2..4d38d48f571 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-12-07  Kirill Yukhin  <kirill.yukhin@intel.com>
+
+	PR target/68627
+	* config/i386/sse.md: Make 'v' alternative work on 'avx512f' ISA only.
+	Force destination to 512 bits register.
+
 2015-12-07  Kirill Yukhin  <kirill.yukhin@intel.com>
 
 	PR target/68633
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index beddf400460..eb49c419b9e 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -17385,20 +17385,21 @@
    (set_attr "mode" "<sseinsnmode>")])
 
 (define_insn "vec_dup<mode>"
-  [(set (match_operand:AVX_VEC_DUP_MODE 0 "register_operand" "=x,x,v,x")
+  [(set (match_operand:AVX_VEC_DUP_MODE 0 "register_operand" "=x,x,x,v,x")
 	(vec_duplicate:AVX_VEC_DUP_MODE
-	  (match_operand:<ssescalarmode> 1 "nonimmediate_operand" "m,m,v,?x")))]
+	  (match_operand:<ssescalarmode> 1 "nonimmediate_operand" "m,m,x,v,?x")))]
   "TARGET_AVX"
   "@
    v<sseintprefix>broadcast<bcstscalarsuff>\t{%1, %0|%0, %1}
    vbroadcast<ssescalarmodesuffix>\t{%1, %0|%0, %1}
    v<sseintprefix>broadcast<bcstscalarsuff>\t{%x1, %0|%0, %x1}
+   v<sseintprefix>broadcast<bcstscalarsuff>\t{%x1, %g0|%g0, %x1}
    #"
   [(set_attr "type" "ssemov")
    (set_attr "prefix_extra" "1")
    (set_attr "prefix" "maybe_evex")
-   (set_attr "isa" "avx2,noavx2,avx2,noavx2")
-   (set_attr "mode" "<sseinsnmode>,V8SF,<sseinsnmode>,V8SF")])
+   (set_attr "isa" "avx2,noavx2,avx2,avx512f,noavx2")
+   (set_attr "mode" "<sseinsnmode>,V8SF,<sseinsnmode>,<sseinsnmode>,V8SF")])
 
 (define_split
   [(set (match_operand:AVX2_VEC_DUP_MODE 0 "register_operand")
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 583baa92741..188ed2b44fb 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2015-12-07  Kirill Yukhin  <kirill.yukhin@intel.com>
+
+	PR target/68627
+	* gfortran.dg/pr68627.f: New test.
+
 2015-12-07  Kirill Yukhin  <kirill.yukhin@intel.com>
 
 	PR target/68633
diff --git a/gcc/testsuite/gfortran.dg/pr68627.f b/gcc/testsuite/gfortran.dg/pr68627.f
new file mode 100644
index 00000000000..32ff4a79e79
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr68627.f
@@ -0,0 +1,18 @@
+! { dg-do compile { target lp64 } }
+
+! { dg-options "-Ofast -mavx512f -ffixed-xmm1 -ffixed-xmm2 -ffixed-xmm3 -ffixed-xmm4 -ffixed-xmm5 -ffixed-xmm6 -ffixed-xmm7 -ffixed-xmm8 -ffixed-xmm9 -ffixed-xmm10 -ffixed-xmm11 -ffixed-xmm12 -ffixed-xmm13 -ffixed-xmm14 -ffixed-xmm15" }
+
+      IMPLICIT REAL*8(A-H,O-Z)
+      ALLOCATABLE DD1(:), DD2(:), WY(:,:)
+      ALLOCATE( DD1(MAX), DD2(MAX), WY(MAX,MAX))
+         DO J = J1,J2
+            DO I = I1, I2
+               DD1(I) = D1 * (WY(I-2,J) - WY(I+2,J) +
+     >              (WY(I+1,J) - WY(I-1,J)))
+            END DO
+            DO I = I1, INT(D2 * D3(I))
+            END DO
+         END DO
+      END
+
+! { dg-final { scan-assembler-not "vbroadcastsd\[ \\t\]+%xmm\[0-9\]+, %ymm\[0-9\]+" } }
-- 
2.30.2