Florian Hahn 5d4bd49c4d [ValueTracking] Fix recurrence detection to check both PHI operands. ...

Summary:
Currently we fail to compute known bits for recurrences where the
first incoming value is the start value of the recurrence.

Instead of exiting the loop when the first incoming value is not
the step of the recurrence, continue to check the second incoming
value.

The original code uses a loop to handle both cases, but incorrectly
exits instead of continuing.

Reviewers: lebedev.ri, spatel, nikic

Reviewed By: lebedev.ri

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66216

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@369088 91177308-0d34-0410-b5e6-96231b3b80d8

2019-08-16 09:15:02 +00:00

..

Analysis

[ValueTracking] Fix recurrence detection to check both PHI operands.

2019-08-16 09:15:02 +00:00

AsmParser

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

BinaryFormat

[Dwarf] Complete the list of type tags.

2019-08-13 17:00:54 +00:00

Bitcode

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

Bitstream

[Bitcode] Move Bitstream to a separate library

2019-07-03 22:40:07 +00:00

CodeGen

[GlobalISel] CSEMIRBuilder: Add support for G_GEP

2019-08-15 23:45:45 +00:00

DebugInfo

Remove the temporary code. NFC.

2019-08-16 03:40:04 +00:00

Demangle

llvm-undname: Correctly demangle vararg parameters

2019-06-04 19:10:08 +00:00

ExecutionEngine

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

Fuzzer

[libFuzzer] Delete llvm/lib/Fuzzer

2017-10-16 20:48:19 +00:00

FuzzMutate

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

IR

Link libpthread into LLVMCore.so

2019-08-15 18:06:30 +00:00

IRReader

[IRReader] Expose getLazyIRModule

2019-02-11 22:01:13 +00:00

LineEditor

[CMake] Delete redundant DEPENDS/LINK_LIBS from LineEditor/XRay

2019-06-22 01:50:21 +00:00

Linker

Linker: Add support for GlobalIFunc.

2019-08-08 22:09:18 +00:00

LTO

[NewPM][PassInstrumentation] IR printing support for (Thin)LTO

2019-08-15 17:47:44 +00:00

MC

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

MCA

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

Object

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

ObjectYAML

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

Option

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

Passes

Title: Loop Cache Analysis

2019-08-09 13:56:29 +00:00

ProfileData

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

Remarks

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

Support

[Support] Re-introduce the RWMutexImpl for macOS < 10.12

2019-08-15 23:07:20 +00:00

TableGen

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

Target

[X86] Manually reimplement getTargetInsertSubreg in X86DAGToDAGISel::matchBitExtract so we can call insertDAGNode on the target constant.

2019-08-16 04:47:44 +00:00

Testing

[Testing] Move clangd::Annotations to llvm testing support

2019-04-25 10:08:31 +00:00

TextAPI

[TextAPI] Fix & Add tests for tbd files version 3.

2019-08-12 23:01:07 +00:00

ToolDrivers

[llvm-dlltool] Clarify an error message. NFC.

2019-08-02 11:20:03 +00:00

Transforms

Move isPointerOffset function to ValueTracking (NFC).

2019-08-15 22:58:28 +00:00

WindowsManifest

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

XRay

[llvm] Migrate llvm::make_unique to std::make_unique

2019-08-15 15:54:37 +00:00

CMakeLists.txt

Fix build errors LLVM tests are disabled.

2019-07-11 22:08:35 +00:00

LLVMBuild.txt

[Bitcode] Move Bitstream to a separate library

2019-07-03 22:40:07 +00:00