Chandler Carruth f2d7693fbb Begin teaching the X86 target how to efficiently codegen patterns that ... use the zero-undefined variants of CTTZ and CTLZ. These are just simple patterns for now, there is more to be done to make real world code using these constructs be optimized and codegen'ed properly on X86. The existing tests are spiffed up to check that we no longer generate unnecessary cmov instructions, and that we generate the very important 'xor' to transform bsr which counts the index of the most significant one bit to the number of leading (most significant) zero bits. Also they now check that when the variant with defined zero result is used, the cmov is still produced. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146974 91177308-0d34-0410-b5e6-96231b3b80d8		2011-12-20 11:19:37 +00:00
..
Analysis	Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch	2011-12-20 02:50:00 +00:00
Archive	Support/FileSystem: Add file_magic and move a vew clients over to it.	2011-12-13 23:17:12 +00:00
AsmParser	The powers that be have decided that LLVM IR should now support 16-bit	2011-12-17 00:04:22 +00:00
Bitcode	The powers that be have decided that LLVM IR should now support 16-bit	2011-12-17 00:04:22 +00:00
CodeGen	Fix up the CMake build for the new files added in r146960, they're	2011-12-20 08:42:11 +00:00
DebugInfo	Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch	2011-12-20 02:50:00 +00:00
ExecutionEngine	Fix up the CMake build for the new files added in r146960, they're	2011-12-20 08:42:11 +00:00
Linker	Now that PR11464 is fixed, reapply the patch to fix PR11464,	2011-12-20 00:12:26 +00:00
MC	Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch	2011-12-20 02:50:00 +00:00
Object	Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch	2011-12-20 02:50:00 +00:00
Support	Fixes a potential compilation error.	2011-12-20 11:04:23 +00:00
TableGen	Fix up the CMake build for the new files added in r146960, they're	2011-12-20 08:42:11 +00:00
Target	Begin teaching the X86 target how to efficiently codegen patterns that	2011-12-20 11:19:37 +00:00
Transforms	Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch	2011-12-20 02:50:00 +00:00
VMCore	Unweaken vtables as per http://llvm.org/docs/CodingStandards.html#ll_virtual_anch	2011-12-20 02:50:00 +00:00
CMakeLists.txt	Move TableGen's parser and entry point into a library	2011-10-01 16:41:13 +00:00
LLVMBuild.txt	LLVMBuild: Introduce a common section which currently has a list of the	2011-12-12 22:45:54 +00:00
Makefile	Remove more of llvmc and dependencies.	2011-09-20 00:34:27 +00:00