Craig Topper 4036e68fea [X86] Add a hasOneUse check to selectScalarSSELoad to keep the same load from being folded multiple times. ...

Summary: When selectScalarSSELoad is looking for a scalar_to_vector of a scalar load, it makes sure the load is only used by the scalar_to_vector. But it doesn't make sure the scalar_to_vector is only used once. This can cause the same load to be folded multiple times. This can be bad for performance. This also causes the chain output to be duplicated, but not connected to anything so chain dependencies will not be satisfied.

Reviewers: RKSimon, zvi, delena, spatel

Subscribers: andreadb, llvm-commits

Differential Revision: https://reviews.llvm.org/D26790

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287983 91177308-0d34-0410-b5e6-96231b3b80d8

2016-11-26 17:29:25 +00:00

..

Analysis

[PM] Change the static object whose address is used to uniquely identify

2016-11-23 17:53:26 +00:00

AsmParser

[AsmParser] Avoid recursing when lexing ';'. NFC.

2016-11-16 22:25:05 +00:00

Bitcode

[CMake] NFC. Updating CMake dependency specifications

2016-11-17 04:36:50 +00:00

CodeGen

Use SDValue helpers instead of explicitly going via SDValue::getNode(). NFCI

2016-11-25 17:25:21 +00:00

DebugInfo

[DebugInfo] Fix some Clang-tidy modernize-use-default and Include What You Use warnings; other minor fixes (NFC).

2016-11-23 23:16:32 +00:00

Demangle

Demangle: remove references to allocator for default allocator

2016-11-20 00:20:27 +00:00

ExecutionEngine

Fix comment typos. NFC.

2016-11-20 13:47:59 +00:00

Fuzzer

[libFuzzer] replace 'auto' with 'auto *' to better follow the LLVM style

2016-11-14 19:21:38 +00:00

IR

[PM] Change the static object whose address is used to uniquely identify

2016-11-23 17:53:26 +00:00

IRReader

Timer: Track name and description.

2016-11-18 19:43:18 +00:00

LibDriver

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LineEditor

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Linker

[ThinLTO] Fix crash when importing an opaque type

2016-11-19 18:44:16 +00:00

LTO

[lib/LTO] Rename few instances of Lto to LTO.

2016-11-24 00:23:09 +00:00

MC

MC: ensure that we have a section before accessing it

2016-11-22 04:32:54 +00:00

Object

Object: Add IRObjectFile::getTargetTriple().

2016-11-24 01:13:09 +00:00

ObjectYAML

Fix Clang-tidy readability-redundant-string-cstr warnings

2016-11-02 16:43:50 +00:00

Option

Generalize ArgList::AddAllArgs more

2016-09-29 19:47:58 +00:00

Passes

[PM] Change the static object whose address is used to uniquely identify

2016-11-23 17:53:26 +00:00

ProfileData

Make the Error class constructor protected

2016-11-11 04:28:40 +00:00

Support

Revert "[Triple] Add Facebook vendor"

2016-11-23 19:03:54 +00:00

TableGen

TableGen: Add operator !or

2016-11-15 06:49:28 +00:00

Target

[X86] Add a hasOneUse check to selectScalarSSELoad to keep the same load from being folded multiple times.

2016-11-26 17:29:25 +00:00

Transforms

[InstCombine] don't drop metadata in FoldOpIntoSelect()

2016-11-26 15:23:20 +00:00

CMakeLists.txt

Try to fix a circular dependency in the modules build.

2016-09-06 20:16:19 +00:00

LLVMBuild.txt

Add an c++ itanium demangler to llvm.

2016-09-06 19:16:48 +00:00