Nadav Rotem 87255a431b Patch by Shuxin Yang <shuxin.llvm@gmail.com>. ... Original message: The attached is the fix to radar://11663049. The optimization can be outlined by following rules: (select (x != c), e, c) -> select (x != c), e, x), (select (x == c), c, e) -> select (x == c), x, e) where the <c> is an integer constant. The reason for this change is that : on x86, conditional-move-from-constant needs two instructions; however, conditional-move-from-register need only one instruction. While the LowerSELECT() sounds to be the most convenient place for this optimization, it turns out to be a bad place. The reason is that by replacing the constant <c> with a symbolic value, it obscure some instruction-combining opportunities which would otherwise be very easy to spot. For that reason, I have to postpone the change to last instruction-combining phase. The change passes the test of "make check-all -C <build-root/test" and "make -C project/test-suite/SingleSource". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165661 91177308-0d34-0410-b5e6-96231b3b80d8		2012-10-10 21:31:55 +00:00
..
Analysis	Use the attribute enums to query if a function has an attribute.	2012-10-09 21:49:51 +00:00
Archive	Mark checkSignature const, and in turn stop casting away const from	2012-09-05 22:09:23 +00:00
AsmParser	Use the enum value of the attributes when removing them from the attributes builder.	2012-10-09 09:17:28 +00:00
Bitcode	Use method to query if there are attributes.	2012-10-04 07:19:46 +00:00
CodeGen	Add in support for expansion of all of the comparison operations to the absolute minimum required set. This allows a backend to expand any arbitrary set of comparisons as long as a minimum set is supported.	2012-10-10 20:50:51 +00:00
DebugInfo	Mark unimplemented copy constructors and copy assignment operators as LLVM_DELETED_FUNCTION.	2012-09-18 02:01:41 +00:00
ExecutionEngine	Adding comments to clarify the reason for non-standard style in these files.	2012-10-10 01:48:52 +00:00
Linker	Move the "findUsedStructTypes" functionality outside of the Module class.	2012-08-03 00:30:35 +00:00
MC	Whitespace.	2012-10-09 20:15:02 +00:00
Object	Cosmetic changes	2012-10-10 01:45:52 +00:00
Support	Revert r165652: "Remove unnecessary RTTI from the build."	2012-10-10 20:50:36 +00:00
TableGen	tblgen: Compile TableGen without RTTI.	2012-10-10 20:27:18 +00:00
Target	Patch by Shuxin Yang <shuxin.llvm@gmail.com>.	2012-10-10 21:31:55 +00:00
Transforms	Remove the final bits of Attributes being declared in the Attribute	2012-10-10 07:36:45 +00:00
VMCore	Revert r165652: "Remove unnecessary RTTI from the build."	2012-10-10 20:50:36 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile