From: "Kumar, Venkataramanan" <Venkataramanan.Kumar@amd.com>
To: "Uros Bizjak (ubizjak@gmail.com)" <ubizjak@gmail.com>,
"gcc-patches@gcc.gnu.org" <gcc-patches@gcc.gnu.org>
Subject: [Patch] [x86_64]: Add bdver4 for multi versioning and fix AMD cpu model detection.
Date: Fri, 09 Oct 2015 09:50:00 -0000 [thread overview]
Message-ID: <7794A52CE4D579448B959EED7DD0A4723DD6E9EB@satlexdag06.amd.com> (raw)
Hi Uros,
Please find below patch that adds bdver4 target for multi versioning.
Also I while computing model, the extended_model is incorrectly left shifted by 4. I have removed it now.
Is below patch Ok for trunk ?
GCC bootstrap and regressions passed.
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index bb3a722..8676747 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,8 @@
+2015-10-09 Venkataramanan Kumar <venkataramanan.kumar@amd.com>
+
+ * config/i386/cpuinfo.c (get_amd_cpu): Detect bdver4.
+ (__cpu_indicator_init): Fix model selection for AMD CPUs.
+
2015-10-05 Kirill Yukhin <kirill.yukhin@intel.com>
* config/i386/cpuinfo.c (get_intel_cpu): Detect "skylake-avx512".
diff --git a/libgcc/config/i386/cpuinfo.c b/libgcc/config/i386/cpuinfo.c
index 0cbbc85..1313ca3 100644
--- a/libgcc/config/i386/cpuinfo.c
+++ b/libgcc/config/i386/cpuinfo.c
@@ -169,6 +169,9 @@ get_amd_cpu (unsigned int family, unsigned int model)
/* Bulldozer version 3 "Steamroller" */
if (model >= 0x30 && model <= 0x4f)
__cpu_model.__cpu_subtype = AMDFAM15H_BDVER3;
+ /* Bulldozer version 4 "Excavator" */
+ if (model >= 0x60 && model <= 0x7f)
+ __cpu_model.__cpu_subtype = AMDFAM15H_BDVER4;
break;
/* AMD Family 16h "btver2" */
case 0x16:
@@ -455,7 +458,7 @@ __cpu_indicator_init (void)
if (family == 0x0f)
{
family += extended_family;
- model += (extended_model << 4);
+ model += extended_model;
}
/* Get CPU type. */
Regards,
Venkat.
next reply other threads:[~2015-10-09 9:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-09 9:50 Kumar, Venkataramanan [this message]
2015-10-09 9:55 ` Uros Bizjak
2015-10-09 10:01 ` Kumar, Venkataramanan
2015-10-13 15:16 ` Kumar, Venkataramanan
2015-10-13 15:42 ` Uros Bizjak
2015-10-18 19:28 ` Kumar, Venkataramanan
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