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    • Junliang Yan's avatar
      PPC/s390: [arm][turbofan] Implement on-stack returns. · 7103c194
      Junliang Yan authored 
      Port 9c7b6e1e

Original Commit Message:

    This is the implementation of crrev.com/c/766371 for arm.

    Original description:

    Add the ability to return (multiple) return values on the stack:

    - Extend stack frames with a new buffer region for return slots.
      This region is located at the end of a caller's frame such that
      its slots can be indexed as caller frame slots in a callee
      (located beyond its parameters) and assigned return values.
    - Adjust stack frame constructon and deconstruction accordingly.
    - Extend linkage computation to support register plus stack returns.
    - Reserve return slots in caller frame when respective calls occur.
    - Introduce and generate architecture instructions ('peek') for
      reading back results from return slots in the caller.
    - Aggressive tests.
    - Some minor clean-up.

R=ahaas@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com, miladfar@ca.ibm.com
BUG=
LOG=N

Change-Id: I83df1af8c49f6d6c5b529db599fce61a1da2490d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1496549Reviewed-by: 's avatarAndreas Haas <ahaas@chromium.org>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#60032}
      7103c194
  63. 12 Nov, 2018 1 commit
  65. 24 Oct, 2018 1 commit
  67. 22 Oct, 2018 1 commit
  69. 03 Oct, 2018 1 commit
  71. 14 Aug, 2018 1 commit
    • Junliang Yan's avatar
      PPC/s390: [turbofan] Further optimize DataView accesses. · 14170c67
      Junliang Yan authored 
      Port 5fecd146

Original Commit Message:

    This adds support for unaligned load/store access to the DataView
    backing store and uses byteswap operations to fix up the endianess
    when necessary. This changes the Word32ReverseBytes operator to be
    a required operator and adds the missing support on the Intel and
    ARM platforms (on 64-bit platforms the Word64ReverseBytes operator
    is also mandatory now).

    This further improves the performance on the dataviewperf.js test
    mentioned in the tracking bug by up to 40%, and at the same time
    reduces the code complexity in the EffectControlLinearizer.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: Ia9aad21713a2ad76ce3ef2b816fc20e9a27fe4c9
Reviewed-on: https://chromium-review.googlesource.com/1174936Reviewed-by: 's avatarJohn Barboza <jbarboza@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#55132}
      14170c67
  73. 22 May, 2017 1 commit
  75. 06 Dec, 2016 1 commit
  77. 18 Jul, 2016 1 commit