From: Jakub Jelinek <jakub@redhat.com>
Date: Fri, 3 Jan 2020 10:14:03 +0000 (+0100)
Subject: re PR target/93089 (Force mprefer-vector-width=512 in 'e' simd clones)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1609beddb1bac416456743dff136b486f54a572c;p=gcc.git

re PR target/93089 (Force mprefer-vector-width=512 in 'e' simd clones)

	PR target/93089
	* config/i386/i386-options.c (ix86_simd_clone_adjust): If
	TARGET_PREFER_AVX128, use prefer-vector-width=256 for 'c' and 'd'
	simd clones.  If TARGET_PREFER_AVX256, use prefer-vector-width=512
	for 'e' simd clones.

	* gcc.target/i386/pr93089-2.c: New test.
	* gcc.target/i386/pr93089-3.c: New test.

From-SVN: r279857
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c1936a53bb3..8cbaa45d7b3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,11 @@
 2020-01-03  Jakub Jelinek  <jakub@redhat.com>
 
+	PR target/93089
+	* config/i386/i386-options.c (ix86_simd_clone_adjust): If
+	TARGET_PREFER_AVX128, use prefer-vector-width=256 for 'c' and 'd'
+	simd clones.  If TARGET_PREFER_AVX256, use prefer-vector-width=512
+	for 'e' simd clones.
+
 	PR target/93089
 	* config/i386/i386.opt (x_prefer_vector_width_type): Remove TargetSave
 	entry.
diff --git a/gcc/config/i386/i386-options.c b/gcc/config/i386/i386-options.c
index a4c66e4aebf..2acc9fb0cfe 100644
--- a/gcc/config/i386/i386-options.c
+++ b/gcc/config/i386/i386-options.c
@@ -2950,15 +2950,36 @@ ix86_simd_clone_adjust (struct cgraph_node *node)
 	str = "sse2";
       break;
     case 'c':
-      if (!TARGET_AVX)
+      if (TARGET_PREFER_AVX128)
+	{
+	  if (!TARGET_AVX)
+	    str = "avx,prefer-vector-width=256";
+	  else
+	    str = "prefer-vector-width=256";
+	}
+      else if (!TARGET_AVX)
 	str = "avx";
       break;
     case 'd':
-      if (!TARGET_AVX2)
+      if (TARGET_PREFER_AVX128)
+	{
+	  if (!TARGET_AVX2)
+	    str = "avx2,prefer-vector-width=256";
+	  else
+	    str = "prefer-vector-width=256";
+	}
+      else if (!TARGET_AVX2)
 	str = "avx2";
       break;
     case 'e':
-      if (!TARGET_AVX512F)
+      if (TARGET_PREFER_AVX256)
+	{
+	  if (!TARGET_AVX512F)
+	    str = "avx512f,prefer-vector-width=512";
+	  else
+	    str = "prefer-vector-width=512";
+	}
+      else if (!TARGET_AVX512F)
 	str = "avx512f";
       break;
     default:
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 48493605dc8..69f1fbdb8a9 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,9 @@
 2020-01-03  Jakub Jelinek  <jakub@redhat.com>
 
+	PR target/93089
+	* gcc.target/i386/pr93089-2.c: New test.
+	* gcc.target/i386/pr93089-3.c: New test.
+
 	PR target/93089
 	* gcc.target/i386/pr93089-1.c: New test.
 
diff --git a/gcc/testsuite/gcc.target/i386/pr93089-2.c b/gcc/testsuite/gcc.target/i386/pr93089-2.c
new file mode 100644
index 00000000000..c167dd60f91
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr93089-2.c
@@ -0,0 +1,12 @@
+/* PR target/93089 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fopenmp-simd -mtune=znver1" } */
+/* { dg-final { scan-assembler "vmulps\[^\n\r]*zmm" } } */
+/* { dg-final { scan-assembler "vmulps\[^\n\r]*ymm" } } */
+
+#pragma omp declare simd notinbranch
+float
+foo (float x, float y)
+{
+  return x * y;
+}
diff --git a/gcc/testsuite/gcc.target/i386/pr93089-3.c b/gcc/testsuite/gcc.target/i386/pr93089-3.c
new file mode 100644
index 00000000000..02f1fae470e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr93089-3.c
@@ -0,0 +1,12 @@
+/* PR target/93089 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fopenmp-simd -mtune=skylake-avx512" } */
+/* { dg-final { scan-assembler "vmulps\[^\n\r]*zmm" } } */
+/* { dg-final { scan-assembler "vmulps\[^\n\r]*ymm" } } */
+
+#pragma omp declare simd notinbranch
+float
+foo (float x, float y)
+{
+  return x * y;
+}