[Beignet] [V2 PATCH 0/8] Implement double division on BDW

[He Junyan]

Ping for review.

On Fri, Sep 18, 2015 at 05:58:11PM +0800, junyan.he at inbox.com wrote:
> Date: Fri, 18 Sep 2015 17:58:11 +0800
> From: junyan.he at inbox.com
> To: beignet at lists.freedesktop.org
> Subject: [Beignet] [V2 PATCH 0/8] Implement double division on BDW
> X-Mailer: git-send-email 1.7.9.5
> 
> From: Junyan He <junyan.he at linux.intel.com>
> 
> We use the macro:
> r0 = 0, r6 = a, r7 = b, r1 = 1
> 
> math.eo.f0.0 (4) r8.acc2 r6.noacc r7.noacc 0xE
> (-f0.0) if
> madm (4) r9.acc3 r0.noacc r6.noacc r8.acc2       // Step(1), q0=a*y0
> madm (4) r10.acc4 r1.noacc -r7.noacc r8.acc2     // Step(2), e0=(1-b*y0)
> madm (4) r11.acc5 r6.noacc -r7.noacc r9.acc3     // Step(3), r0=a-b*q0
> madm (4) r12.acc6 r8.acc2 r10.acc4 r8.acc2       // Step(4), y1=y0+e0*y0
> madm (4) r13.acc7 r1.noacc -r7.noacc r12.acc6    // Step(5), e1=(1-b*y1)
> madm (4) r8.acc8 r8.acc2 r10.acc4 r12.acc6       // Step(6), y2=y0+e0*y1
> madm (4) r9.acc9 r9.acc3 r11.acc5 r12.acc6       // Step(7), q1=q0+r0*y1
> madm (4) r12.acc2 r12.acc6 r8.acc8 r13.acc7      // Step(8), y3=y1+e1*y2
> madm (4) r11.acc3 r6.noacc -r7.noacc r9.acc9     // Step(9), r1=a-b*q1
> 
> madm (4) r8.noacc r9.acc9 r11.acc3 r12.acc2      // Step(10), q=q1+r1*y3
> endif
> 
> to implement hi precision double division on BDW.
> 
> 
> V2:
> 1. Correct the spelling slips.
> 2. Fix some bugs for double registers format.
> 3. Redefine the handle double logic and delete the double support on pre-gen7
> 4. Declare fp64 extension support on BDW.
> 5. Consider the uniform case for F64DIV.
> 
> With this patch set, the +-*/ is basically OK on BDW platform.
> All pre-gen7 platforms will not support double any more.
> Conversion and bitcast between double and other types are not OK now.
> 
> Signed-off-by: Junyan He <junyan.he at linux.intel.com>
> ---
> backend/src/backend/gen/gen_mesa_disasm.c           | 134 ++++++++++++++++++++----
> backend/src/backend/gen75_encoder.hpp               |   4 -
> backend/src/backend/gen7_encoder.hpp                |   4 -
> backend/src/backend/gen8_context.cpp                | 145 ++++++++++++++++++++++++++
> backend/src/backend/gen8_context.hpp                |   2 +
> backend/src/backend/gen8_encoder.cpp                | 164 +++++++++++++++++++++++++++++-
> backend/src/backend/gen8_encoder.hpp                |  12 ++-
> backend/src/backend/gen8_instruction.hpp            |  86 ++++++++++++++++
> backend/src/backend/gen_context.cpp                 |   4 +
> backend/src/backend/gen_context.hpp                 |   1 +
> backend/src/backend/gen_defs.hpp                    |  13 +++
> backend/src/backend/gen_encoder.cpp                 |  52 ++--------
> backend/src/backend/gen_encoder.hpp                 |   3 +-
> backend/src/backend/gen_insn_gen7_schedule_info.hxx |   1 +
> backend/src/backend/gen_insn_selection.cpp          |  54 +++++++++-
> backend/src/backend/gen_insn_selection.hxx          |   1 +
> backend/src/backend/gen_register.hpp                |   6 +-
> kernels/compiler_double_4.cl                        |   5 -
> kernels/compiler_double_div.cl                      |  11 ++
> src/cl_device_id.c                                  |   3 +
> src/cl_extensions.c                                 |  21 ++++
> src/cl_extensions.h                                 |   2 +
> utests/CMakeLists.txt                               |   2 +
> utests/compiler_double.cpp                          |   5 +-
> utests/compiler_double_4.cpp                        |  40 --------
> utests/compiler_double_div.cpp                      |  80 +++++++++++++++
> utests/utest_helper.cpp                             |  19 ++++
> utests/utest_helper.hpp                             |   3 +
> 
> 
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