David Majnemer cd237ed585 InstSimplify: Optimize signed icmp of -(zext V) ...

Summary:
We know that -(zext V) will always be <= zero, simplify signed icmps
that have these.

Uncovered using http://www.cs.utah.edu/~regehr/souper/

Reviewers: nicholas

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D3754

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208809 91177308-0d34-0410-b5e6-96231b3b80d8

2014-05-14 20:16:28 +00:00

..

2010-12-20-Boolean.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

2010-12-20-Distribute.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

2011-01-14-Thread.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

2011-02-01-Vector.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

2011-09-05-InsertExtractValue.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

2011-10-27-BinOpCrash.ll

…

2011-11-23-MaskedBitsCrash.ll

…

2013-04-19-ConstantFoldingCrash.ll

ConstantFolding: ComputeMaskedBits wants the scalar size for vectors.

2013-04-19 16:56:24 +00:00

AndOrXor.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

call-callconv.ll

[SimplifyLibCalls] Library call simplification doen't work if the call site

2013-02-08 18:00:14 +00:00

call.ll

Verify that we don't optimize null return checks to the nothrow_t version of operator new.

2013-09-24 18:37:49 +00:00

compare.ll

InstSimplify: Optimize signed icmp of -(zext V)

2014-05-14 20:16:28 +00:00

dead-code-removal.ll

RecursivelyDeleteTriviallyDeadInstructions() could remove

2014-04-26 05:58:11 +00:00

exact-nsw-nuw.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

fast-math.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

fdiv.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

floating-point-arithmetic.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

maxmin.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

past-the-end.ll

…

phi.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

ptr_diff.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

reassociate.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

rem.ll

Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change.

2013-07-14 01:42:54 +00:00

undef.ll

InstSimplify: Make shift, select and GEP simplifications vector-aware.

2014-01-24 17:09:53 +00:00

vector_gep.ll

InstSimplify: Make shift, select and GEP simplifications vector-aware.

2014-01-24 17:09:53 +00:00