From: Jakub Jelinek <jakub@redhat.com>
Date: Mon, 25 Jun 2018 16:56:33 +0000 (+0200)
Subject: backport: re PR target/80819 (Useless store to the stack  in _mm_set_epi64x with... 
X-Git-Tag: releases/gcc-6.5.0~243
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=edd6f1fbbb68417a4d551b2baeeddfed872dbf4c;p=thirdparty%2Fgcc.git

backport: re PR target/80819 (Useless store to the stack  in _mm_set_epi64x with SSE4 -mno-avx)

	Backported from mainline
	2017-11-29  Jakub Jelinek  <jakub@redhat.com>

	PR target/80819
	* config/i386/sse.md (vec_concatv2di): Remove * from (=Yr,0,*rm)
	alternative.

	* gcc.target/i386/pr80819-1.c: New test.
	* gcc.target/i386/pr80819-2.c: New test.

From-SVN: r262040
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d69483ce35cf..6c4eb62597a0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,12 @@
 2018-06-25  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from mainline
+	2017-11-29  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/80819
+	* config/i386/sse.md (vec_concatv2di): Remove * from (=Yr,0,*rm)
+	alternative.
+
 	2017-11-24  Jakub Jelinek  <jakub@redhat.com>
  
 	PR sanitizer/83014
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index 319dbd22276f..e5ff0078c691 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -13616,7 +13616,7 @@
 	  (match_operand:DI 1 "nonimmediate_operand"
 	  "  0, 0,x ,r ,xm,?!*Yn,0,x,0,0,x")
 	  (match_operand:DI 2 "vector_move_operand"
-	  "*rm,rm,rm,C ,C ,C ,x,x,x,m,m")))]
+	  " rm,rm,rm,C ,C ,C ,x,x,x,m,m")))]
   "TARGET_SSE"
   "@
    pinsrq\t{$1, %2, %0|%0, %2, 1}
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 431ad7c09b6f..4c07baf52b5b 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,6 +1,12 @@
 2018-06-25  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from mainline
+	2017-11-29  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/80819
+	* gcc.target/i386/pr80819-1.c: New test.
+	* gcc.target/i386/pr80819-2.c: New test.
+
 	2017-11-24  Jakub Jelinek  <jakub@redhat.com>
  
 	PR sanitizer/83014
diff --git a/gcc/testsuite/gcc.target/i386/pr80819-1.c b/gcc/testsuite/gcc.target/i386/pr80819-1.c
new file mode 100644
index 000000000000..f06c3628e023
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr80819-1.c
@@ -0,0 +1,13 @@
+/* PR target/80819 */
+/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-options "-O2 -msse4 -mno-avx -mtune=haswell -masm=att" } */
+
+typedef unsigned long long V __attribute__((vector_size (16)));
+
+V
+foo (unsigned long long x, unsigned long long y)
+{
+  return (V) { x, y };
+}
+
+/* { dg-final { scan-assembler-not "movq\[ \t]*%rsi, \[-0-9]*\\(" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pr80819-2.c b/gcc/testsuite/gcc.target/i386/pr80819-2.c
new file mode 100644
index 000000000000..7571e8160cb1
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr80819-2.c
@@ -0,0 +1,13 @@
+/* PR target/80819 */
+/* { dg-do compile { target { ! ia32 } } } */
+/* { dg-options "-O2 -msse4 -mno-avx -mtune=generic -masm=att" } */
+
+typedef unsigned long long V __attribute__((vector_size (16)));
+
+V
+foo (unsigned long long x, unsigned long long y)
+{
+  return (V) { x, y };
+}
+
+/* { dg-final { scan-assembler-not "movq\[ \t]*%rsi, \[-0-9]*\\(" } } */