Sanjay Patel 245690544d [InstCombine] fold a shifted bool zext to a select (2nd try) ...

The 1st attempt at rL374828 inserted the code
at the wrong position (outside of the constant-shift-amount
block). Trying again with an additional test to verify
const-ness.

For a constant shift amount, add the following fold.
shl (zext (i1 X)), ShAmt --> select (X, 1 << ShAmt, 0)

https://rise4fun.com/Alive/IZ9

Fixes PR42257.

Based on original patch by @zvi (Zvi Rackover)

Differential Revision: https://reviews.llvm.org/D63382

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@374886 91177308-0d34-0410-b5e6-96231b3b80d8

2019-10-15 13:12:44 +00:00

..

Analysis

[MemorySSA] Update for partial unswitch.

2019-10-14 23:52:39 +00:00

Assembler

[ThinLTO] Fix printing of NoInline function summary flag

2019-10-14 18:37:31 +00:00

Bindings

[IRBuilder] Update IRBuilder::CreateFNeg(...) to return a UnaryOperator

2019-10-14 15:35:01 +00:00

Bitcode

Add FMF to vector ops for phi

2019-10-14 17:39:32 +00:00

BugPoint

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CodeGen

[Alignment] Migrate Attribute::getWith(Stack)Alignment

2019-10-15 12:56:24 +00:00

DebugInfo

[DebugInfo] Add a DW_OP_LLVM_entry_value operation

2019-10-15 11:31:21 +00:00

Demangle

[Demangle] Add a few more options to the microsoft demangler

2019-10-15 08:29:56 +00:00

Examples

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ExecutionEngine

[JITLink] Disable the MachO/AArch64 testcase while investigating bot failures.

2019-10-11 01:58:12 +00:00

Feature

[FPEnv] Add constrained intrinsics for lrint and lround

2019-10-07 13:20:00 +00:00

FileCheck

[FileCheck] Implement --ignore-case option.

2019-10-11 11:59:14 +00:00

Instrumentation

Insert module constructors in a module pass

2019-10-11 08:47:03 +00:00

Integer

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JitListener

[lit] Delete empty lines at the end of lit.local.cfg NFC

2019-06-17 09:51:07 +00:00

Linker

Remove some unnecessary REQUIRES: shell lines

2019-09-10 00:06:52 +00:00

LTO

Revert "Dead Virtual Function Elimination"

2019-10-14 23:25:25 +00:00

MachineVerifier

Add an operand to memory intrinsics to denote the "tail" marker.

2019-09-28 05:33:21 +00:00

MC

[X86] Teach X86MCodeEmitter to properly encode zmm16-zmm31 as index register to vgatherpf/vscatterpf.

2019-10-14 23:48:24 +00:00

Object

Reapply: [llvm-size] Tidy up error messages (PR42970)

2019-10-14 17:29:15 +00:00

ObjectYAML

[yaml2obj/ObjectYAML] - Cleanup the error reporting API, add custom errors handlers.

2019-09-13 16:00:16 +00:00

Other

Reapply r374743 with a fix for the ocaml binding

2019-10-14 16:15:14 +00:00

Reduce

[Testing] Python 3 requires print to use parens

2019-09-20 13:52:47 +00:00

SafepointIRVerifier

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Support

[llvm-dwarfdump] Remove unnecessary explicit -h behaviour

2019-06-21 11:22:20 +00:00

SymbolRewriter

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TableGen

[TableGen] Fix a bug that MCSchedClassDesc is interfered between different SchedModel

2019-10-11 08:36:54 +00:00

ThinLTO/X86

Revert "Dead Virtual Function Elimination"

2019-10-14 23:25:25 +00:00

tools

[llvm-objdump] Adjust spacing and field width for --section-headers

2019-10-14 17:47:17 +00:00

Transforms

[InstCombine] fold a shifted bool zext to a select (2nd try)

2019-10-15 13:12:44 +00:00

Unit

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Verifier

[DebugInfo] Add a DW_OP_LLVM_entry_value operation

2019-10-15 11:31:21 +00:00

YAMLParser

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.clang-format

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CMakeLists.txt

[llvm-ifs][IFS] llvm Interface Stubs merging + object file generation tool.

2019-08-30 18:26:05 +00:00

lit.cfg.py

Reland "[utils] Implement the llvm-locstats tool"

2019-10-02 07:00:01 +00:00

lit.site.cfg.py.in

Follow-up to r372209: Use single quotes for host_ldflags in the lit config

2019-09-18 14:12:59 +00:00

TestRunner.sh

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