David Majnemer 6578f1beb1 InstSimplify: [al]shr exact undef, %X -> undef ...

Exact shifts always keep the non-zero bits of their input.  This means
it keeps it's undef bits.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223923 91177308-0d34-0410-b5e6-96231b3b80d8

2014-12-10 09:14:52 +00:00

..

2010-12-20-Boolean.ll

…

2011-01-14-Thread.ll

…

2011-02-01-Vector.ll

…

2011-09-05-InsertExtractValue.ll

…

2011-10-27-BinOpCrash.ll

…

2011-11-23-MaskedBitsCrash.ll

…

2013-04-19-ConstantFoldingCrash.ll

…

AndOrXor.ll

InstSimplify: Try to bring back the rest of r223583

2014-12-08 18:30:43 +00:00

apint-or.ll

Move optimization of some cases of (A & C1)|(B & C2) from instcombine to instsimplify. Patch by Rahul Jain, plus some last minute changes by me -- you can blame me for any bugs.

2014-06-19 03:51:46 +00:00

assume.ll

Add @llvm.assume, lowering, and some basic properties

2014-07-25 21:13:35 +00:00

call-callconv.ll

…

call.ll

…

compare.ll

InstSimplify: Handle some simple tautological comparisons

2014-11-25 02:55:48 +00:00

dead-code-removal.ll

…

exact-nsw-nuw.ll

InstCombine, InstSimplify: (%X /s C1) /s C2 isn't always 0 when C1 * C2 overflow

2014-10-11 10:20:01 +00:00

fast-math.ll

…

fdiv.ll

…

floating-point-arithmetic.ll

…

fold-builtin-fma.ll

Revert "r216914 - Revert: [APFloat] Fixed a bug in method 'fusedMultiplyAdd'"

2014-10-14 19:23:07 +00:00

gep.ll

InstSimplify: Don't simplify gep X, (Y-X) to Y if types differ

2014-08-27 20:08:34 +00:00

maxmin.ll

…

noalias-ptr.ll

Revert "r223364 - Revert r223347 which has caused crashes on bootstrap bots."

2014-12-04 17:45:19 +00:00

past-the-end.ll

…

phi.ll

…

ptr_diff.ll

…

reassociate.ll

…

rem.ll

InstSimplify: Don't allow (x srem y) urem y -> x srem y

2014-09-17 04:16:35 +00:00

select.ll

InstSimplify: Restore optimizations lost in r210006

2014-11-27 06:32:46 +00:00

shr-nop.ll

InstSimplify: Exact shifts of X by Y are X if X has the lsb set

2014-11-05 00:59:59 +00:00

undef.ll

InstSimplify: [al]shr exact undef, %X -> undef

2014-12-10 09:14:52 +00:00

vector_gep.ll

…

vector_ptr_bitcast.ll

[InstSimplify] Support constant folding to vector of pointers

2014-10-22 12:18:48 +00:00