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llvm-6502/lib/Transforms/InstCombine
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Erik Eckstein 10e28ca6b1 InstCombine: simplify signed range checks 
Try to convert two compares of a signed range check into a single unsigned compare.
Examples:
(icmp sge x, 0) & (icmp slt x, n) --> icmp ult x, n
(icmp slt x, 0) | (icmp sgt x, n) --> icmp ugt x, n




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223224 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-03 10:39:15 +00:00
..
CMakeLists.txt Tidy up a bit. No functional change. 2013-04-05 21:20:12 +00:00
InstCombine.h InstCombine: simplify signed range checks 2014-12-03 10:39:15 +00:00
InstCombineAddSub.cpp InstCombine: Combine (X | Y) - X to (~X & Y) 2014-11-03 05:53:55 +00:00
InstCombineAndOrXor.cpp InstCombine: simplify signed range checks 2014-12-03 10:39:15 +00:00
InstCombineCalls.cpp [Statepoints 3/4] Statepoint infrastructure for garbage collection: SelectionDAGBuilder 2014-12-02 18:50:36 +00:00
InstCombineCasts.cpp InstCombine: Fix another infinite loop caused by visitFPTrunc 2014-11-18 22:06:45 +00:00
InstCombineCompares.cpp Removed extra line from a comment to test first commit. NFC. 2014-11-28 10:38:18 +00:00
InstCombineLoadStoreAlloca.cpp [InstCombine] Change LLVM To canonicalize toward the value type being 2014-11-25 10:09:51 +00:00
InstCombineMulDivRem.cpp InstCombine: Don't create an unused instruction 2014-11-24 16:41:13 +00:00
InstCombinePHI.cpp Update SetVector to rely on the underlying set's insert to return a pair<iterator, bool> 2014-11-19 07:49:26 +00:00
InstCombineSelect.cpp InstCombine: Restore optimizations lost in r210006 2014-11-27 07:25:21 +00:00
InstCombineShifts.cpp Make use of @llvm.assume in ValueTracking (computeKnownBits, etc.) 2014-09-07 18:57:58 +00:00
InstCombineSimplifyDemanded.cpp Add additional patterns for @llvm.assume in ValueTracking 2014-09-07 19:21:07 +00:00
InstCombineVectorOps.cpp fixed some typos 2014-07-07 22:13:58 +00:00
InstCombineWorklist.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
InstructionCombining.cpp InstCombine: Don't assume DataLayout is always available 2014-11-24 07:26:20 +00:00
LLVMBuild.txt
Makefile