Juergen Ributzka 4eced19c50 SelectionDAG: Teach the legalizer to split SETCC if VSELECT needs splitting too. ... The Type Legalizer recognizes that VSELECT needs to be split, because the type is to wide for the given target. The same does not always apply to SETCC, because less space is required to encode the result of a comparison. As a result VSELECT is split and SETCC is unrolled into scalar comparisons. This commit fixes the issue by checking for VSELECT-SETCC patterns in the DAG Combiner. If a matching pattern is found, then the result mask of SETCC is promoted to the expected vector mask type for the given target. This mask has usually the same size as the VSELECT return type (except for Intel KNL). Now the type legalizer will split both VSELECT and SETCC. This allows the following X86 DAG Combine code to sucessfully detect the MIN/MAX pattern. This fixes PR16695, PR17002, and <rdar://problem/14594431>. Reviewed by Nadav git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193676 91177308-0d34-0410-b5e6-96231b3b80d8		2013-10-30 05:48:18 +00:00
..
Analysis	SCEV: Make the final add of an inbounds GEP nuw if we know that the index is positive.	2013-10-28 07:30:06 +00:00
AsmParser	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
Bitcode	Revert r193251 : Use address-taken to disambiguate global variable and indirect memops.	2013-10-27 03:08:44 +00:00
CodeGen	SelectionDAG: Teach the legalizer to split SETCC if VSELECT needs splitting too.	2013-10-30 05:48:18 +00:00
DebugInfo	DWARF parser: propery handle DW_FORM_ref_sig8 and fix Windows build.	2013-10-29 16:32:19 +00:00
ExecutionEngine	The FIXME was indeed fixed in the linker, comment removed.	2013-10-25 12:01:53 +00:00
IR	Fix misapplied patch in r193597	2013-10-29 09:37:28 +00:00
IRReader
Linker	Add a 'deleteModule' method to the Linker class.	2013-10-16 08:59:57 +00:00
LTO	Move getSymbol to TargetLoweringObjectFile.	2013-10-29 17:28:26 +00:00
MC	Move the STT_FILE symbols out of the normal symbol table processing for	2013-10-29 01:06:17 +00:00
Object	Support for microMIPS jump instructions	2013-10-29 16:38:59 +00:00
Option
Support	simplify ConstantRange::getSetSize()	2013-10-28 16:52:38 +00:00
TableGen
Target	SelectionDAG: Teach the legalizer to split SETCC if VSELECT needs splitting too.	2013-10-30 05:48:18 +00:00
Transforms	ARM cost model: Account for zero cost scalar SROA instructions	2013-10-29 01:33:53 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile	Reformat Makefile. No other changes.	2013-10-30 04:03:03 +00:00