Michael Ilseman 5db40ba98e Added a slew of SimplifyInstruction floating-point optimizations, many of which take advantage of fast-math flags. Test cases included. ...

fsub X, +0 ==> X
  fsub X, -0 ==> X, when we know X is not -0
  fsub +/-0.0, (fsub -0.0, X) ==> X
  fsub nsz +/-0.0, (fsub +/-0.0, X) ==> X
  fsub nnan ninf X, X ==> 0.0
  fadd nsz X, 0 ==> X
  fadd [nnan ninf] X, (fsub [nnan ninf] 0, X) ==> 0
    where nnan and ninf have to occur at least once somewhere in this expression
  fmul X, 1.0 ==> X

llvm-svn: 169940

2012-12-12 00:27:46 +00:00

..

2010-12-20-Boolean.ll

Rename this test.

2011-01-14 14:16:33 +00:00

2010-12-20-Distribute.ll

Simplify (X<<1)-X into X. According to my auto-simplier this is the most common missed

2011-01-18 09:24:58 +00:00

2011-01-14-Thread.ll

Factorize common code out of the InstructionSimplify shift logic. Add in

2011-01-14 14:44:12 +00:00

2011-02-01-Vector.ll

Have m_One also match constant vectors for which every element is 1.

2011-02-01 08:39:12 +00:00

2011-09-05-InsertExtractValue.ll

InstSimplify: Don't try to replace an extractvalue/insertvalue pair with the original value if types don't match.

2011-09-05 18:16:19 +00:00

2011-10-27-BinOpCrash.ll

Reapply commit 143028 with a fix: the problem was casting a ConstantExpr Mul

2011-10-27 19:16:21 +00:00

2011-11-23-MaskedBitsCrash.ll

Fix a crash in which a multiplication was being reported as being both negative

2011-11-23 16:26:47 +00:00

AndOrXor.ll

A shift of a power of two is a power of two or zero.

2011-10-28 18:30:05 +00:00

compare.ll

Add support to ValueTracking for determining that a pointer is non-null

2012-12-07 02:08:58 +00:00

exact-nsw-nuw.ll

Teach instsimplify some tricks about exact/nuw/nsw shifts.

2011-02-09 17:15:04 +00:00

fast-math.ll

Added a slew of SimplifyInstruction floating-point optimizations, many of which take advantage of fast-math flags. Test cases included.

2012-12-12 00:27:46 +00:00

fdiv.ll

Move InstCombine's knowledge of fdiv to SimplifyInstruction().

2011-01-29 15:26:31 +00:00

floating-point-arithmetic.ll

Added a slew of SimplifyInstruction floating-point optimizations, many of which take advantage of fast-math flags. Test cases included.

2012-12-12 00:27:46 +00:00

lit.local.cfg

Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed.

2012-02-16 06:28:33 +00:00

maxmin.ll

The comparision "max(x,y)==x" is equivalent to "x>=y". Since the max is

2011-05-07 16:56:49 +00:00

phi.ll

Make sure we don't return bits outside the mask in ComputeMaskedBits. PR12189.

2012-03-05 23:09:40 +00:00

ptr_diff.ll

Switch the pointer-difference simplification logic to only work with

2012-03-25 20:43:07 +00:00

reassociate.ll

Generalize the "trunc(ptrtoint(x)) - trunc(ptrtoint(y)) ->

2012-03-13 14:07:05 +00:00

rem.ll

Move some rem transforms out of instcombine and into instsimplify.

2011-05-02 16:27:02 +00:00

undef.ll

Add tests for existing InstSimplify features.

2011-11-04 18:39:16 +00:00

vector_gep.ll

Add support for vectors of pointers.

2011-12-05 06:29:09 +00:00