Sanjay Patel 4eb218a6fd [InstCombine] fold (X >>u C) << C --> X & (-1 << C) ...

We already have this fold when the lshr has one use, but it doesn't need that
restriction. We may be able to remove some code from foldShiftedShift().

Also, move the similar:
(X << C) >>u C --> X & (-1 >>u C)
...directly into visitLShr to help clean up foldShiftByConstOfShiftByConst().

That whole function seems questionable since it is called by commonShiftTransforms(),
but there's really not much in common if we're checking the shift opcodes for every
fold.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293215 91177308-0d34-0410-b5e6-96231b3b80d8

2017-01-26 22:08:10 +00:00

..

Analysis

[SCEV] Introduce add operation inlining limit

2017-01-26 13:33:17 +00:00

Assembler

[NVPTX] Auto-upgrade some NVPTX intrinsics to LLVM target-generic code.

2017-01-21 01:00:32 +00:00

Bindings

[cmake] Canonicalize CMake booleans to 0/1 for lit interop

2017-01-06 21:33:48 +00:00

Bitcode

[ThinLTO] Subsume all importing checks into a single flag

2017-01-05 14:32:16 +00:00

BugPoint

Add -strip-nonlinetable-debuginfo capability

2016-10-25 18:44:13 +00:00

CodeGen

[Hexagon] Add Hexagon-specific loop idiom recognition pass

2017-01-26 21:41:10 +00:00

DebugInfo

[pdb] Fix failing test

2017-01-25 21:21:02 +00:00

Examples

…

ExecutionEngine

RuntimeDyldELF: add LDST128_ABS_LO12_NC reloc

2017-01-23 13:52:08 +00:00

Feature

Fix some broken CHECK lines.

2017-01-22 20:28:56 +00:00

FileCheck

Commit a test for match-full-lines.

2017-01-09 23:11:25 +00:00

Instrumentation

[sanitizer-coverage] emit __sanitizer_cov_trace_pc_guard w/o a preceding 'if' by default. Update the docs, also add deprecation notes around other parts of sanitizer coverage

2017-01-24 00:57:31 +00:00

Integer

…

JitListener

[cmake] Canonicalize CMake booleans to 0/1 for lit interop

2017-01-06 21:33:48 +00:00

LibDriver

LibDriver: Allow resource files to be archive members.

2016-12-15 19:37:46 +00:00

Linker

Renumber testcase metadata nodes after r290153.

2016-12-22 00:45:21 +00:00

LTO

IPO, LTO: Plumb the summary from the LTO API into the pass manager.

2017-01-20 22:18:52 +00:00

MC

Revert "[mips] N64 static relocation model support"

2017-01-26 10:46:07 +00:00

Object

Add support for the new LC_NOTE load command.

2017-01-19 17:36:31 +00:00

ObjectYAML

Attempt to fix the testcase in r292824

2017-01-23 20:42:17 +00:00

Other

[PH] Replace uses of AssertingVH from members of analysis results with

2017-01-24 12:55:57 +00:00

SymbolRewriter

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TableGen

[tablegen] Delete duplicates from a vector without skipping elements

2016-12-01 19:38:50 +00:00

ThinLTO/X86

[LTO] Add test to show up we don't support ThinLTO yet.

2017-01-24 00:59:00 +00:00

tools

gold-plugin: Fix test case.

2017-01-26 02:15:08 +00:00

Transforms

[InstCombine] fold (X >>u C) << C --> X & (-1 << C)

2017-01-26 22:08:10 +00:00

Unit

…

Verifier

[TBAAVerifier] Be stricter around verifying scalar nodes

2016-12-29 15:47:05 +00:00

YAMLParser

…

.clang-format

…

CMakeLists.txt

[llvm-config] Print --system-libs only when static linking

2017-01-06 21:33:54 +00:00

lit.cfg

[llvm-config] Print --system-libs only when static linking

2017-01-06 21:33:54 +00:00

lit.site.cfg.in

[llvm-config] Print --system-libs only when static linking

2017-01-06 21:33:54 +00:00

TestRunner.sh

…