Bill Wendling f0e44c4d7a From Hacker's Delight: ...

"For signed integers, the determination of overflow of x*y is not so simple. If
x and y have the same sign, then overflow occurs iff xy > 2**31 - 1. If they
have opposite signs, then overflow occurs iff xy < -2**31."

In this case, x == -1.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60278 91177308-0d34-0410-b5e6-96231b3b80d8

2008-11-30 05:01:05 +00:00

..

ADCE.cpp

Let instcombiner remove redundant dbg intrinsics.

2008-11-19 18:59:41 +00:00

BasicBlockPlacement.cpp

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CMakeLists.txt

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CodeGenPrepare.cpp

don't call MergeBasicBlockIntoOnlyPred on a block whose only

2008-11-28 19:54:49 +00:00

CondPropagate.cpp

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ConstantProp.cpp

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DCE.cpp

simplify this logic.

2008-11-27 22:46:09 +00:00

DeadStoreElimination.cpp

Fix a thinko that manifested as a crash on clamav last night.

2008-11-29 20:29:04 +00:00

GVN.cpp

Fix a fixme by making memdep's handling of allocations more logical.

2008-11-30 01:39:32 +00:00

GVNPRE.cpp

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IndVarSimplify.cpp

Revert r60042. IndVarSimplify should check if APFloat is PPCDoubleDouble first before trying to convert it to an integer.

2008-11-26 01:11:57 +00:00

InstructionCombining.cpp

From Hacker's Delight:

2008-11-30 05:01:05 +00:00

JumpThreading.cpp

don't call MergeBasicBlockIntoOnlyPred on a block whose only

2008-11-28 19:54:49 +00:00

LICM.cpp

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LoopDeletion.cpp

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LoopIndexSplit.cpp

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LoopRotation.cpp

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LoopStrengthReduce.cpp

Temporarily revert r60195. It's causing an optimized bootstrap of llvm-gcc to fail.

2008-11-29 03:43:04 +00:00

LoopUnroll.cpp

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LoopUnswitch.cpp

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Makefile

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MemCpyOptimizer.cpp

Eliminate the dropInstruction method, which is not needed any more.

2008-11-29 23:30:39 +00:00

PredicateSimplifier.cpp

Silence unused variable warnings.

2008-11-21 20:00:59 +00:00

Reassociate.cpp

Fix build failure.

2008-11-21 21:00:20 +00:00

Reg2Mem.cpp

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Scalar.cpp

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ScalarReplAggregates.cpp

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SCCP.cpp

Fix unused variable warnings.

2008-11-21 01:52:59 +00:00

SimplifyCFGPass.cpp

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SimplifyHalfPowrLibCalls.cpp

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SimplifyLibCalls.cpp

reapply Sanjiv's patch to genericize memcpy/memset/memmove to take an

2008-11-21 16:42:48 +00:00

TailDuplication.cpp

simplify code.

2008-11-27 22:56:14 +00:00

TailRecursionElimination.cpp

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