Sanjoy Das ba38902605 [InstCombine] Transform A & (L - 1) u< L --> L != 0 ...

Summary:
This transform is never a pessimization at the IR level (since it
replaces an `icmp` with another), and has potentiall payoffs:

 1. It may make the `icmp` fold away or become loop invariant.
 2. It may make the `A & (L - 1)` computation dead.

This shows up in Java, in range checks generated by array accesses of
the form `a[i & (a.length - 1)]`.

Reviewers: reames, majnemer

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D12210

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@245635 91177308-0d34-0410-b5e6-96231b3b80d8

2015-08-20 22:31:55 +00:00

..

Hello

Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)

2015-06-23 09:49:53 +00:00

InstCombine

[InstCombine] Transform A & (L - 1) u< L --> L != 0

2015-08-20 22:31:55 +00:00

Instrumentation

[asan] Add ASAN support for AArch64 42-bit VMA

2015-08-20 18:30:40 +00:00

IPO

[PM/AA] Remove the last relics of the separate IPA library from LLVM,

2015-08-18 17:51:53 +00:00

ObjCARC

[ARC] Pull the ObjC ARC components that really serve the role of

2015-08-20 08:06:03 +00:00

Scalar

Rename Instruction::dropUnknownMetadata() to dropUnknownNonDebugMetadata()

2015-08-20 22:00:30 +00:00

Utils

Rename Instruction::dropUnknownMetadata() to dropUnknownNonDebugMetadata()

2015-08-20 22:00:30 +00:00

Vectorize

[SLP] Propagate 'nontemporal' attribute into vectorized instructions.

2015-08-20 22:28:15 +00:00

CMakeLists.txt

…

LLVMBuild.txt

…

Makefile

…