[all-commits] [llvm/llvm-project] fd39b1: Revert "Revert "As a follow-up to my initial mail ...

[Eric Christopher via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: fd39b1bb20cec32c310ae9b6f1b4603c17a5f832
      https://github.com/llvm/llvm-project/commit/fd39b1bb20cec32c310ae9b6f1b4603c17a5f832
  Author: Eric Christopher <echristo at gmail.com>
  Date:   2019-11-26 (Tue, 26 Nov 2019)

  Changed paths:
    M clang/test/CodeGen/2008-07-30-implicit-initialization.c
    M clang/test/CodeGen/arm-fp16-arguments.c
    M clang/test/CodeGen/arm-vfp16-arguments2.cpp
    M clang/test/CodeGen/atomic-ops-libcall.c
    M clang/test/CodeGenCXX/atomicinit.cpp
    M clang/test/CodeGenCXX/auto-var-init.cpp
    M clang/test/CodeGenCXX/discard-name-values.cpp
    M clang/test/CodeGenCXX/microsoft-abi-dynamic-cast.cpp
    M clang/test/CodeGenCXX/microsoft-abi-typeid.cpp
    M clang/test/CodeGenCXX/nrvo.cpp
    M clang/test/CodeGenCXX/stack-reuse.cpp
    M clang/test/CodeGenCXX/wasm-args-returns.cpp
    M clang/test/CodeGenObjCXX/arc-blocks.mm
    M clang/test/CodeGenObjCXX/nrvo.mm
    M clang/test/Lexer/minimize_source_to_dependency_directives_invalid_error.c
    M clang/test/PCH/no-escaping-block-tail-calls.cpp
    M lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/ambiguous_tail_call_seq1/Makefile
    M lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/ambiguous_tail_call_seq2/Makefile
    M lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/disambiguate_call_site/Makefile
    M lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/disambiguate_paths_to_common_sink/Makefile
    M lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/disambiguate_tail_call_seq/Makefile
    M lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/inlining_and_tail_calls/Makefile
    M lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/sbapi_support/Makefile
    M lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/thread_step_out_message/Makefile
    M lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/thread_step_out_or_return/Makefile
    M lldb/packages/Python/lldbsuite/test/functionalities/tail_call_frames/unambiguous_sequence/Makefile
    M llvm/include/llvm/Passes/PassBuilder.h
    M llvm/lib/Passes/PassBuilder.cpp
    M llvm/lib/Transforms/IPO/PassManagerBuilder.cpp
    M llvm/test/CodeGen/AMDGPU/simplify-libcalls.ll
    M llvm/test/Feature/optnone-opt.ll
    M llvm/test/Other/new-pm-defaults.ll
    M llvm/test/Other/new-pm-thinlto-defaults.ll
    M llvm/test/Transforms/MemCpyOpt/lifetime.ll
    M llvm/test/Transforms/PhaseOrdering/simplifycfg-options.ll
    M llvm/test/Transforms/PhaseOrdering/two-shifts-by-sext.ll

  Log Message:
  -----------
  Revert "Revert "As a follow-up to my initial mail to llvm-dev here's a first pass at the O1 described there.""

This reapplies: 8ff85ed905a7306977d07a5cd67ab4d5a56fafb4

Original commit message:

As a follow-up to my initial mail to llvm-dev here's a first pass at the O1 described there.

This change doesn't include any change to move from selection dag to fast isel
and that will come with other numbers that should help inform that decision.
There also haven't been any real debuggability studies with this pipeline yet,
this is just the initial start done so that people could see it and we could start
tweaking after.

Test updates: Outside of the newpm tests most of the updates are coming from either
optimization passes not run anymore (and without a compelling argument at the moment)
that were largely used for canonicalization in clang.

Original post:

http://lists.llvm.org/pipermail/llvm-dev/2019-April/131494.html

Tags: #llvm
Differential Revision: https://reviews.llvm.org/D65410

This reverts commit c9ddb02659e3ece7a0d9d6b4dac7ceea4ae46e6d.