Sanjay Patel 89305e5345 Don't prevent a vselect of constants from becoming a single load (PR20648). ... Fix for PR20648 - http://llvm.org/bugs/show_bug.cgi?id=20648 This patch checks the operands of a vselect to see if all values are constants. If yes, bail out of any further attempts to create a blend or shuffle because SelectionDAGLegalize knows how to turn this kind of vselect into a single load. This already happens for machines without SSE4.1, so the added checks just send more targets down that path. Differential Revision: http://reviews.llvm.org/D4934 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216121 91177308-0d34-0410-b5e6-96231b3b80d8		2014-08-20 20:34:56 +00:00
..
Analysis	Answer to Philip Reames comments	2014-08-18 22:18:14 +00:00
AsmParser	Split parseAssembly into parseAssembly and parseAssemblyInto.	2014-08-19 22:05:47 +00:00
Bitcode	BitcodeReader: Only create one basic block for each blockaddress	2014-08-16 01:54:37 +00:00
CodeGen	Fix null reference creation in ScheduleDAGInstrs constructor call.	2014-08-20 19:36:05 +00:00
DebugInfo	Don't own the buffer in object::Binary.	2014-08-19 18:44:46 +00:00
ExecutionEngine	[MCJIT] Allow '$' characters in symbol names in RuntimeDyldChecker.	2014-08-19 20:04:45 +00:00
IR	IR: Implement uselistorder assembly directives	2014-08-19 21:30:15 +00:00
IRReader	Modernize the .ll parsing interface.	2014-08-19 16:58:54 +00:00
LineEditor
Linker	Set comdats when lazily linking functions.	2014-08-15 20:17:08 +00:00
LTO	Silencing a -Wcast-qual warning. NFC.	2014-08-20 12:54:13 +00:00
MC	Remove unused field.	2014-08-20 17:33:44 +00:00
Object	Fix a pair of use after free. Should bring the bots back.	2014-08-19 18:59:14 +00:00
Option	[Option] Support MultiArg in --help	2014-08-15 21:35:07 +00:00
ProfileData	Don't own the buffer in object::Binary.	2014-08-19 18:44:46 +00:00
Support	Fix undefined behavior (left shift by 64 bits) in ScaledNumber::toString().	2014-08-20 18:30:07 +00:00
TableGen	Canonicalize header guards into a common format.	2014-08-13 16:26:38 +00:00
Target	Don't prevent a vselect of constants from becoming a single load (PR20648).	2014-08-20 20:34:56 +00:00
Transforms	InstCombine: Annotate sub with nuw when we prove it's safe	2014-08-20 07:17:31 +00:00
CMakeLists.txt	ProfileData: Introduce the InstrProfReader interface and a text reader	2014-03-21 17:24:48 +00:00
LLVMBuild.txt	ProfileData: Introduce the InstrProfReader interface and a text reader	2014-03-21 17:24:48 +00:00
Makefile	ProfileData: Introduce the InstrProfReader interface and a text reader	2014-03-21 17:24:48 +00:00