Sanjay Patel de6f59d487 [InstCombine] fold bitcasts around an extractelement (2nd try) ... This is a redo of r255124 (reverted at r255126) with an added check for a scalar destination type and an added test for the failure seen in Clang's test/CodeGen/vector.c. The extra test shows a different missing optimization. Original commit message: Example: bitcast (extractelement (bitcast <2 x float> %X to <2 x i32>), 1) to float ---> extractelement <2 x float> %X, i32 1 This is part of fixing PR25543: https://llvm.org/bugs/show_bug.cgi?id=25543 The next step will be to generalize this fold: trunc ( lshr ( bitcast X) ) -> extractelement (X) Ie, I'm hoping to replace the existing transform of: bitcast ( trunc ( lshr ( bitcast X))) added by: http://reviews.llvm.org/rL112232 with 2 less specific transforms to catch the case in the bug report. Differential Revision: http://reviews.llvm.org/D14879 llvm-svn: 255137		2015-12-09 18:57:16 +00:00
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Analysis	Don't punish vectorized arithmetic instruction whose type will be split to multiple registers	2015-12-04 00:36:58 +00:00
Assembler
Bindings
Bitcode
BugPoint
CodeGen	[WebAssembly] Reintroduce ARGUMENT moving logic	2015-12-09 16:23:59 +00:00
DebugInfo	Revert "Implement a new pass - LiveDebugValues - to compute the set of live DEBUG_VALUEs at each basic block and insert them. Reviewed and accepted at: http://reviews.llvm.org/D11933"	2015-12-09 08:17:42 +00:00
Examples
ExecutionEngine
Feature	Have 'optnone' respect the -fast-isel=false option.	2015-11-30 21:56:16 +00:00
FileCheck
Instrumentation	Create llvm.global_ctors in the new format.	2015-12-06 16:18:25 +00:00
Integer
JitListener
LibDriver
Linker	Add a test showing that we internalize lazily linked GVs.	2015-12-08 02:38:14 +00:00
LTO
MC	[AArch64] Fix FP16 vector instructions that should only accept low registers	2015-12-09 14:32:11 +00:00
Object	Stabilize llvm/test/Object/archive-update.test a bit.	2015-12-07 23:15:57 +00:00
Other	[llc/opt] Add an option to run all passes twice	2015-12-04 21:56:46 +00:00
SymbolRewriter
TableGen
tools	[llvm-dwp] Restructure inputs for test case so they're all grouped together	2015-12-07 18:46:41 +00:00
Transforms	[InstCombine] fold bitcasts around an extractelement (2nd try)	2015-12-09 18:57:16 +00:00
Unit
Verifier	[Verifier] Fix !dbg validation if Scope is the Subprogram	2015-12-06 23:05:38 +00:00
YAMLParser
.clang-format
CMakeLists.txt	[llvm-dwp] Add missing dependency from llvm tests on the llvm-dwp tool	2015-12-01 00:57:05 +00:00
lit.cfg	check-llvm: Introduce the new feature "tls".	2015-12-01 01:14:58 +00:00
lit.site.cfg.in
Makefile
Makefile.tests
TestRunner.sh