llvm-6502/lib/Transforms
Andrew Trick c7b0b7dc8f Add support to indvars for optimizing sadd.with.overflow.
Split sadd.with.overflow into add + sadd.with.overflow to allow
analysis and optimization. This should ideally be done after
InstCombine, which can perform code motion (eventually indvars should
run after all canonical instcombines). We want ISEL to recombine the
add and the check, at least on x86.

This is currently under an option for reducing live induction
variables: -liv-reduce. The next step is reducing liveness of IVs that
are live out of the overflow check paths. Once the related
optimizations are fully developed, reviewed and tested, I do expect
this to become default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197926 91177308-0d34-0410-b5e6-96231b3b80d8
2013-12-23 23:31:49 +00:00
..
Hello First check in. Modified a comment. 2013-09-27 07:36:10 +00:00
InstCombine Stay classy (and legal) LLVM. Remove links to 3rd party SMT solver whose links may not be permanent. 2013-12-19 18:35:54 +00:00
Instrumentation [asan] don't unpoison redzones on function exit in use-after-return mode. 2013-12-23 14:15:08 +00:00
IPO Fix a use-after-free error in GlobalOpt CleanupConstantGlobalUsers 2013-12-12 20:45:24 +00:00
ObjCARC Correct word hyphenations 2013-12-05 05:44:44 +00:00
Scalar Add support to indvars for optimizing sadd.with.overflow. 2013-12-23 23:31:49 +00:00
Utils Add support to indvars for optimizing sadd.with.overflow. 2013-12-23 23:31:49 +00:00
Vectorize LoopVectorizer: Don't if-convert constant expressions that can trap 2013-12-17 01:11:01 +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