From 992592ec7a83b1001cf88633fae88d92f8dba79c Mon Sep 17 00:00:00 2001
From: Christian Widmer <shadow@umbrox.de>
Date: Tue, 27 Aug 2013 17:24:37 +0000
Subject: [PATCH] re PR target/57927 (-march=core-avx2 different than
-march=native on INTEL Haswell (i7-4700K))
PR target/57927
* config/i386/driver-i386.c (host_detect_local_cpu): Add detection
of Ivy Bridge and Haswell processors. Assume core-avx2 for unknown
AVX2 capable processors.
From-SVN: r202026
---
gcc/ChangeLog | 7 +++++++
gcc/config/i386/driver-i386.c | 28 ++++++++++++++++++----------
2 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 902293b25f8a..9698dc910184 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2013-08-27 Christian Widmer <shadow@umbrox.de>
+
+ PR target/57927
+ * config/i386/driver-i386.c (host_detect_local_cpu): Add detection
+ of Ivy Bridge and Haswell processors. Assume core-avx2 for unknown
+ AVX2 capable processors.
+
2013-08-27 Tejas Belagod <tejas.belagod@arm.com>
* config/aarch64/arm_neon.h: Replace all inline asm implementations
diff --git a/gcc/config/i386/driver-i386.c b/gcc/config/i386/driver-i386.c
index ee7ed23c8bb9..001d12fd2410 100644
--- a/gcc/config/i386/driver-i386.c
+++ b/gcc/config/i386/driver-i386.c
@@ -644,13 +644,18 @@ const char *host_detect_local_cpu (int argc, const char **argv)
/* Atom. */
cpu = "atom";
break;
+ case 0x0f:
+ /* Merom. */
+ case 0x17:
+ case 0x1d:
+ /* Penryn. */
+ cpu = "core2";
+ break;
case 0x1a:
case 0x1e:
case 0x1f:
case 0x2e:
/* Nehalem. */
- cpu = "corei7";
- break;
case 0x25:
case 0x2c:
case 0x2f:
@@ -662,20 +667,23 @@ const char *host_detect_local_cpu (int argc, const char **argv)
/* Sandy Bridge. */
cpu = "corei7-avx";
break;
- case 0x17:
- case 0x1d:
- /* Penryn. */
- cpu = "core2";
+ case 0x3a:
+ case 0x3e:
+ /* Ivy Bridge. */
+ cpu = "core-avx-i";
break;
- case 0x0f:
- /* Merom. */
- cpu = "core2";
+ case 0x3c:
+ /* Haswell. */
+ cpu = "core-avx2";
break;
default:
if (arch)
{
/* This is unknown family 0x6 CPU. */
- if (has_avx)
+ if (has_avx2)
+ /* Assume Haswell. */
+ cpu = "core-avx2";
+ else if (has_avx)
/* Assume Sandy Bridge. */
cpu = "corei7-avx";
else if (has_sse4_2)
--
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