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  1. 30 Jan, 2017 1 commit
  3. 25 Jan, 2017 1 commit
    • jyan's avatar
      s390: TF Codegen Optimization · f7a3ede0
      jyan authored 
      List of items:
  1. Avoid zero-extending for subsequent 32-bit operations if current operation does not change upper 32-bit or does zero-extending.
  2. Match complex address mode for binary operation where possible (eg. use Add R,MEM).
  3. Detect instruction forms in selector. Eg. kAllowRRR, kAllowRM
  4. Optimize sequence for Int32MulWithOverflow, Int32Div, etc.
  5. Remove Not32/Not64 which is the same as XOR

R=bjaideep@ca.ibm.com, joransiu@ca.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/2649113007
Cr-Commit-Position: refs/heads/master@{#42669}
      f7a3ede0
  5. 22 Dec, 2016 2 commits
  7. 21 Dec, 2016 1 commit
  9. 19 Dec, 2016 1 commit
  11. 16 Dec, 2016 1 commit
  13. 24 Nov, 2016 1 commit
  15. 22 Aug, 2016 1 commit
  17. 15 Aug, 2016 1 commit
  19. 09 Aug, 2016 1 commit
  21. 08 Aug, 2016 1 commit
    • jyan's avatar
      S390: Decouple Add/Sub/Neg to 32/64 Bit Op · dc884581
      jyan authored 
      1. Decouple kS390_Add/Sub/Neg to
     kS390_Add32/Sub32/Neg32/Add64/Sub64/Neg64
2. Nuke kS390_Add/SubWithOverflow32
3. Add Support for Load-On-Condition to optimize AssembleArchBoolean

R=joransiu@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com, bjaideep@ca.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/2220313002
Cr-Commit-Position: refs/heads/master@{#38443}
      dc884581
  23. 29 Jul, 2016 1 commit
  25. 19 Jul, 2016 1 commit
  27. 27 Jun, 2016 1 commit
  29. 24 May, 2016 1 commit
  31. 04 Apr, 2016 1 commit
    • joransiu's avatar
      S390: Use FIEBRA/FIDBRA for FP Floor/Ceil · 06d7276b
      joransiu authored 
      The existing FloatFloor/Ceiling functions had an issue with handling
Number.MIN_VALUE (0x1 ==> 5e-324), and would incorrectly return
MIN_VALUE instead of 0/1.  Simplify the entire sequence by using the
available hardware instruction with the appropriate rounding mode
(POS_INF for Ceiling, NEG_INF for Floor).

Add missing FIEBRA/FIDBRA cases to disassembler.

R=jyan@ca.ibm.com,michael_dawson@ca.ibm.com,mbrandy@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1853973002

Cr-Commit-Position: refs/heads/master@{#35239}
      06d7276b
  33. 30 Mar, 2016 1 commit
    • joransiu's avatar
      S390: Fix Mod64/ModU64 sequence · 14570528
      joransiu authored 
      The CodeGenerator sequence for Mod64/ModU64 is incorrectly using
32-bit operations.  Fix Mod64/ModU64 to use 64-bit divides to calculate
the remainder.

Fix disassembly for DLR, which was reading the wrong bits for the two
register operands.

R=jyan@ca.ibm.com,michael_dawson@ca.ibm.com,mbrandy@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1839813006

Cr-Commit-Position: refs/heads/master@{#35121}
      14570528
  35. 29 Mar, 2016 2 commits
  37. 28 Mar, 2016 1 commit
  39. 17 Mar, 2016 1 commit
    • jyan's avatar
      S390: [wasm] Int64Lowering of Int64Sub. · 680f50a9
      jyan authored 
          Port 33c08596

    Original commit message:
        Int64Sub is lowered to a new turbofan operator, Int32SubPair. The new
        operator takes 4 inputs an generates 2 outputs. The inputs are the low
        word of the left input, high word of the left input, the low word of the
        right input, and high word of the right input. The ouputs are the low
        and high word of the result of the subtraction.

        The implementation is very similar to the implementation of Int64Add.

R=ahaas@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1807243002

Cr-Commit-Position: refs/heads/master@{#34865}
      680f50a9
  41. 16 Mar, 2016 1 commit
    • jyan's avatar
      S390: [wasm] Int64Lowering of Int64Add · 06bceeb7
      jyan authored 
      Original commit message:
    Int64Add is lowered to a new turbofan operator, Int32AddPair. The new
    operator takes 4 inputs an generates 2 outputs. The inputs are the low
    word of the left input, high word of the left input, the low word of the
    right input, and high word of the right input. The ouputs are the low
    and high word of the result of the addition.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1807013002

Cr-Commit-Position: refs/heads/master@{#34840}
      06bceeb7
  43. 26 Feb, 2016 1 commit
    • joransiu's avatar
      S390: Initial impl of S390 asm, masm, code-stubs,... · 23cf6592
      joransiu authored 
      Initial commit with the bulk of the src/s390/* changes
along with associated changes to the build toolchain for
the new files.

A minor update to V8PRIuPTR definition for Mac OS X
affecting 32-bit S390 sim compilations.

R=danno@chromium.org,jkummerow@chromium.org,jochen@chromium.org,jyan@ca.ibm.com,michael_dawson@ca.ibm.com,mbrandy@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1725243004

Cr-Commit-Position: refs/heads/master@{#34331}
      23cf6592