Michael Zolotukhin 805e09d964 [SCEV] createAddRecFromPHI: Optimize for the most common case. ...

Summary:
The existing implementation creates a symbolic SCEV expression every
time we analyze a phi node and then has to remove it, when the analysis
is finished. This is very expensive, and in most of the cases it's also
unnecessary. According to the data I collected, ~60-70% of analyzed phi
nodes (measured on SPEC) have the following form:
  PN = phi(Start, OP(Self, Constant))
Handling such cases separately significantly speeds this up.

Reviewers: sanjoy, pete

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D32663

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302096 91177308-0d34-0410-b5e6-96231b3b80d8

2017-05-03 23:53:38 +00:00

..

Analysis

[SCEV] createAddRecFromPHI: Optimize for the most common case.

2017-05-03 23:53:38 +00:00

AsmParser

AMDGPU: Add AMDGPU_HS calling convention

2017-05-02 15:41:10 +00:00

Bitcode

Bitcode: Simplify how we enumerate summaries in the index. NFCI.

2017-05-02 17:48:39 +00:00

CodeGen

[KnownBits] Add zext, sext, and trunc methods to KnownBits

2017-05-03 22:07:25 +00:00

DebugInfo

clang-format and restyle DWARFFormValue before working on it. NFC

2017-05-03 21:53:21 +00:00

Demangle

Add support for demangling C++11 thread_local variables.

2017-01-31 15:56:36 +00:00

ExecutionEngine

[bpf] add relocation support

2017-05-03 17:30:56 +00:00

Fuzzer

[libFuzzer] exit without running atexit handlers in libfuzzer's crash handler

2017-05-03 20:31:19 +00:00

IR

[IR] Abstract away ArgNo+1 attribute indexing as much as possible

2017-05-03 18:17:31 +00:00

IRReader

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LibDriver

Fix some ArgList uses after API change in r300135.

2017-04-12 23:43:58 +00:00

LineEditor

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Linker

[Linker] Provide callback for internalization

2017-03-13 18:08:11 +00:00

LTO

Bitcode: Make the summary reader responsible for merging. NFCI.

2017-05-01 22:04:36 +00:00

MC

[bpf] add relocation support

2017-05-03 17:30:56 +00:00

Object

Add llvm::object::getELFSectionTypeName().

2017-05-02 14:04:52 +00:00

ObjectYAML

[WebAssembly] Allow for signed relocation addends

2017-04-26 00:02:31 +00:00

Option

ArgList: cache index ranges containing arguments with each ID

2017-04-12 23:19:51 +00:00

Passes

[PM/LoopUnswitch] Introduce a new, simpler loop unswitch pass.

2017-04-27 18:45:20 +00:00

ProfileData

[ProfileData] Unify getInstrProf*SectionName helpers

2017-04-15 00:09:57 +00:00

Support

[AArch64] Fix variable name ambiguity in r302078.

2017-05-03 20:51:34 +00:00

TableGen

Use print() instead of dump() in code

2017-01-28 02:47:46 +00:00

Target

Mark functions as not having CFI once we finalize an x86 stack frame

2017-05-03 23:13:42 +00:00

Transforms

[InstCombine][KnownBits] Use KnownBits better to detect nsw adds

2017-05-03 23:22:46 +00:00

XRay

[XRay] - Fix spelling error to test commit access.

2017-04-06 03:32:01 +00:00

CMakeLists.txt

[XRay] Define the library for XRay trace logs

2017-01-11 06:39:09 +00:00

LLVMBuild.txt

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