x86-64.net

AMD (high performance)

Steamroller

AMD Steamroller (2014) supports x86-64-v2.

x86-64 level
x86-64-v2
Vendor
AMD
First products
2014
Products
A-Series (Kaveri); Athlon X4 860K; R-Series (Bald Eagle)
Segments
desktopmobileembedded
GCC target
-march=bdver3
Optimization
Optimizing code for Bulldozer to Excavator

Product lines

The product lines built on Steamroller, with the market segment the vendor sells each in and the sockets or soldered (BGA) packages its processors come in. Each socket links to the vendor page that states it.
Product lineSegmentSocketSource
A-Series (Kaveri)desktopFM2+ir.amd.com
A-Series (Kaveri)mobileFP3 (BGA)ir.amd.com
Athlon X4desktopFM2+amd.com
R-Series (Bald Eagle)embeddedFP3 (BGA)ir.amd.com

Why not x86-64-v3?

Steamroller lacks AVX2, BMI2 and MOVBE, all of which x86-64-v3 requires.

Feature checklist

Features required by each x86-64 level and whether Steamroller has them. OSFXSR and OSXSAVE are set by the operating system; the table checks the hardware features they depend on.
FeatureSteamrollerEnumerated byLinux flag
x86-64-v1
CMOVYesCPUID.01H:EDX[15]cmov
CX8YesCPUID.01H:EDX[8]cx8
FPUYesCPUID.01H:EDX[0]fpu
FXSRYesCPUID.01H:EDX[24]fxsr
MMXYesCPUID.01H:EDX[23]mmx
OSFXSR via FXSRYesCPUID.01H:EDX[24]fxsr
SCEYesCPUID.80000001H:EDX[11]syscall
SSEYesCPUID.01H:EDX[25]sse
SSE2YesCPUID.01H:EDX[26]sse2
x86-64-v2
CMPXCHG16BYesCPUID.01H:ECX[13]cx16
LAHF-SAHFYesCPUID.80000001H:ECX[0]lahf_lm
POPCNTYesCPUID.01H:ECX[23]popcnt
SSE3YesCPUID.01H:ECX[0]pni
SSE4.1YesCPUID.01H:ECX[19]sse4_1
SSE4.2YesCPUID.01H:ECX[20]sse4_2
SSSE3YesCPUID.01H:ECX[9]ssse3
x86-64-v3
AVXYesCPUID.01H:ECX[28]avx
AVX2NoCPUID.(EAX=07H,ECX=0):EBX[5]avx2
BMI1YesCPUID.(EAX=07H,ECX=0):EBX[3]bmi1
BMI2NoCPUID.(EAX=07H,ECX=0):EBX[8]bmi2
F16CYesCPUID.01H:ECX[29]f16c
FMAYesCPUID.01H:ECX[12]fma
LZCNTYesCPUID.80000001H:ECX[5]abm
MOVBENoCPUID.01H:ECX[22]movbe
OSXSAVE via XSAVEYesCPUID.01H:ECX[26]xsave
x86-64-v4
AVX512FNoCPUID.(EAX=07H,ECX=0):EBX[16]avx512f
AVX512BWNoCPUID.(EAX=07H,ECX=0):EBX[30]avx512bw
AVX512CDNoCPUID.(EAX=07H,ECX=0):EBX[28]avx512cd
AVX512DQNoCPUID.(EAX=07H,ECX=0):EBX[17]avx512dq
AVX512VLNoCPUID.(EAX=07H,ECX=0):EBX[31]avx512vl

Other extensions

Notable extensions outside the x86-64 levels. Vendors sometimes disable these on individual models. Linked names lead to the extension's instructions.

Known vulnerabilities

The CVEs that the sources of the vulnerability list name as affecting Steamroller, in all of its models or in some of them.

Sources

  1. GCC -march=bdver3 feature set (PTA_BDVER3)
  2. AMD Revolutionizes Compute and UltraHD Entertainment With 2014 AMD A-Series Accelerated Processors (AMD press release, January 14, 2014)
  3. AMD Embeds Intelligent, Interactive and Immersive Experiences With 2nd Generation AMD Embedded R-Series APUs and CPUs (AMD press release, May 20, 2014): The R-Series (Bald Eagle), with Steamroller cores.