llvm-6502/lib/Transforms
Owen Anderson 3042a65e5f Remove a very old instcombine where we would turn sequences of selects into
logical operations on the i1's driving them.  This is a bad idea for every
target I can think of (confirmed with micro tests on all of: x86-64, ARM,
AArch64, Mips, and PowerPC) because it forces the i1 to be materialized into
a general purpose register, whereas consuming it directly into a select generally
allows it to exist only transiently in a predicate or flags register.

Chandler ran a set of performance tests with this change, and reported no
measurable change on x86-64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201275 91177308-0d34-0410-b5e6-96231b3b80d8
2014-02-12 23:54:07 +00:00
..
Hello Set LLVM_EXPORTED_SYMBOL_FILE in CMakeLists whose corresponding Makefiles do so. 2013-12-29 23:06:49 +00:00
InstCombine Remove a very old instcombine where we would turn sequences of selects into 2014-02-12 23:54:07 +00:00
Instrumentation [asan] support for FreeBSD, LLVM part. patch by Viktor Kutuzov 2014-02-10 07:37:04 +00:00
IPO Set default of inlinecold-threshold to 225. 2014-02-06 01:59:22 +00:00
ObjCARC Update optimization passes to handle inalloca arguments 2014-01-28 02:38:36 +00:00
Scalar [LPM] Switch LICM to actively use LCSSA in addition to preserving it. 2014-02-11 12:52:27 +00:00
Utils [LPM] A terribly simple fix to a terribly complex bug: PR18773. 2014-02-10 19:39:35 +00:00
Vectorize [Vectorizer] Add a new 'OperandValueKind' in TargetTransformInfo called 2014-02-12 23:43:47 +00:00
CMakeLists.txt Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer. 2013-01-28 01:35:51 +00:00
LLVMBuild.txt Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer. 2013-01-28 01:35:51 +00:00
Makefile Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer. 2013-01-28 01:35:51 +00:00