Juergen Ributzka c7e77f91fe SelectionDAG: Teach the legalizer to split SETCC if VSELECT needs splitting too. ... This patch reapplies r193676 with an additional fix for the Hexagon backend. The SystemZ backend has already been fixed by r194148. 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. 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@194542 91177308-0d34-0410-b5e6-96231b3b80d8		2013-11-13 01:57:54 +00:00
..
Analysis	delinearization of arrays	2013-11-12 22:47:20 +00:00
AsmParser	[Stackmap] Add AnyReg calling convention support for patchpoint intrinsic.	2013-11-08 23:28:16 +00:00
Bitcode	Extract a bc attr parsing helper that returns Attribute::None on error	2013-11-12 01:31:00 +00:00
CodeGen	SelectionDAG: Teach the legalizer to split SETCC if VSELECT needs splitting too.	2013-11-13 01:57:54 +00:00
DebugInfo	DebugInfo: Make pubnames header printing similar to unit header printing	2013-11-01 17:53:30 +00:00
ExecutionEngine	Fixing a problem with iterator validity in RuntimeDyldImpl::resolveExternalSymbols	2013-11-11 19:55:10 +00:00
IR	Introduce an AnalysisManager which is like a pass manager but with a lot	2013-11-13 01:12:08 +00:00
IRReader	[llvm-c] Expose IRReader interface	2013-11-06 09:21:15 +00:00
Linker	Revert "Move copying of global initializers below the cloning of functions."	2013-11-09 00:43:18 +00:00
LTO	Protect user-supplied runtime library functions in LTO	2013-11-12 21:44:01 +00:00
MC	Remove always true flag.	2013-11-12 23:27:08 +00:00
Object	Support for microMIPS branch instructions.	2013-11-04 14:53:22 +00:00
Option	Use startswith_lower() where possible.	2013-11-04 19:22:50 +00:00
Support	Add newline at EOF in DynamicLibrary.cpp	2013-11-06 11:12:46 +00:00
TableGen	Fix most memory leaks in tablegen.	2013-10-31 04:07:41 +00:00
Target	SelectionDAG: Teach the legalizer to split SETCC if VSELECT needs splitting too.	2013-11-13 01:57:54 +00:00
Transforms	Update the docs to match the function name.	2013-11-13 01:12:01 +00:00
CMakeLists.txt	Move LTO support library to a component, allowing it to be tested	2013-09-24 23:52:22 +00:00
LLVMBuild.txt	Move LTO support library to a component, allowing it to be tested	2013-09-24 23:52:22 +00:00
Makefile	Reformat Makefile. No other changes.	2013-10-30 04:03:03 +00:00