Serge Pavlov ea0ea63773 Recognize test for overflow in integer multiplication. ... If multiplication involves zero-extended arguments and the result is compared as in the patterns: %mul32 = trunc i64 %mul64 to i32 %zext = zext i32 %mul32 to i64 %overflow = icmp ne i64 %mul64, %zext or %overflow = icmp ugt i64 %mul64 , 0xffffffff then the multiplication may be replaced by call to umul.with.overflow. This change fixes PR4917 and PR4918. Differential Revision: http://llvm-reviews.chandlerc.com/D2814 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206137 91177308-0d34-0410-b5e6-96231b3b80d8		2014-04-13 18:23:41 +00:00
..
CMakeLists.txt	Tidy up a bit. No functional change.	2013-04-05 21:20:12 +00:00
InstCombine.h	Fix shift by constants for vector.	2014-04-11 17:57:53 +00:00
InstCombineAddSub.cpp	[Modules] Move the LLVM IR pattern match header into the IR library, it	2014-03-04 11:08:18 +00:00
InstCombineAndOrXor.cpp	[Modules] Move the ConstantRange class into the IR library. This is	2014-03-04 12:24:34 +00:00
InstCombineCalls.cpp	ARM64: initial backend import	2014-03-29 10:18:08 +00:00
InstCombineCasts.cpp	[C++11] Add range based accessors for the Use-Def chain of a Value.	2014-03-09 03:16:01 +00:00
InstCombineCompares.cpp	Recognize test for overflow in integer multiplication.	2014-04-13 18:23:41 +00:00
InstCombineLoadStoreAlloca.cpp	[InstCombine] Don't fold bitcast into store if it would need addrspacecast	2014-03-25 17:21:41 +00:00
InstCombineMulDivRem.cpp	[Modules] Move the LLVM IR pattern match header into the IR library, it	2014-03-04 11:08:18 +00:00
InstCombinePHI.cpp	[C++11] Add range based accessors for the Use-Def chain of a Value.	2014-03-09 03:16:01 +00:00
InstCombineSelect.cpp	[Modules] Move the LLVM IR pattern match header into the IR library, it	2014-03-04 11:08:18 +00:00
InstCombineShifts.cpp	Fix shift by constants for vector.	2014-04-11 17:57:53 +00:00
InstCombineSimplifyDemanded.cpp	[Modules] Move the LLVM IR pattern match header into the IR library, it	2014-03-04 11:08:18 +00:00
InstCombineVectorOps.cpp	[C++11] Add range based accessors for the Use-Def chain of a Value.	2014-03-09 03:16:01 +00:00
InstCombineWorklist.h	[C++11] Add range based accessors for the Use-Def chain of a Value.	2014-03-09 03:16:01 +00:00
InstructionCombining.cpp	Fix PR19270 - type mismatch caused by invalid optimization.	2014-04-03 17:51:58 +00:00
LLVMBuild.txt	LLVMBuild: Remove trailing newline, which irked me.	2011-12-12 19:48:00 +00:00
Makefile