Sanjay Patel f727e387be [InstCombine] fold trunc ([lshr] (bitcast vector) ) --> extractelement (PR25543) ...

This is a fix for PR25543:
https://llvm.org/bugs/show_bug.cgi?id=25543

The idea is to take the existing fold of:
bitcast ( trunc ( lshr ( bitcast X))) --> extractelement (bitcast X)
( http://reviews.llvm.org/rL112232 )

And break it into less specific transforms so we'll catch more cases such as
the example in the bug report:
bitcast ( trunc ( lshr ( bitcast X))) -->
bitcast ( extractelement (bitcast X)) -->
extractelement (bitcast X)

Enabling patches for this change:
http://reviews.llvm.org/rL255399 (combine bitcasts)
http://reviews.llvm.org/rL255433 (canonicalize extractelement(bitcast X))

Differential Revision: http://reviews.llvm.org/D15392

llvm-svn: 255504

2015-12-14 16:16:54 +00:00

..

Analysis

Try to appease a buildbot

2015-12-12 05:53:20 +00:00

AsmParser

[IR] Reformulate LLVM's EH funclet IR

2015-12-12 05:38:55 +00:00

Bitcode

[IR] Reformulate LLVM's EH funclet IR

2015-12-12 05:38:55 +00:00

CodeGen

Fix a type issue in r255455. Should not use unsigned type as std::abs()'s template type.

2015-12-13 17:00:25 +00:00

DebugInfo

[llvm-dwp] Retrieve the DWOID from the CU for the cu_index entry

2015-12-04 17:20:04 +00:00

ExecutionEngine

[Orc] Rename IndirectStubsManagerBase to IndirectStubsManager.

2015-12-06 19:44:45 +00:00

Fuzzer

[LibFuzzer] Introducing FUZZER_FLAG_UNSIGNED and using it for seeding.

2015-12-10 20:41:53 +00:00

IR

[IR] Reformulate LLVM's EH funclet IR

2015-12-12 05:38:55 +00:00

IRReader

…

LibDriver

[Option] Use an ArrayRef to store the Option Infos in OptTable. NFC

2015-10-21 16:30:42 +00:00

LineEditor

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Linker

Fix another case where the linkage was not set.

2015-12-10 18:44:26 +00:00

LTO

MSVC complains about this being ambiguous.

2015-12-04 22:26:21 +00:00

MC

[X86][inline asm] support even directive

2015-12-13 17:07:23 +00:00

Object

Use make_range to reduce mentions of iterator type. NFC

2015-12-06 05:08:07 +00:00

Option

[Option] Use an ArrayRef to store the Option Infos in OptTable. NFC

2015-10-21 16:30:42 +00:00

Passes

[PM] Port StripDeadPrototypes to the new pass manager

2015-10-30 23:28:12 +00:00

ProfileData

[PGO] Stop using invalid char in instr variable names.

2015-12-12 17:28:03 +00:00

Support

Revert r255444.

2015-12-13 04:14:39 +00:00

TableGen

[TblGen] ArrayRefize TGParser. No functional change intended.

2015-10-24 12:46:45 +00:00

Target

[Hexagon] Subtarget features/default CPU corrections

2015-12-14 15:03:54 +00:00

Transforms

[InstCombine] fold trunc ([lshr] (bitcast vector) ) --> extractelement (PR25543)

2015-12-14 16:16:54 +00:00

CMakeLists.txt

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LLVMBuild.txt

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Makefile

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