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llvm-6502/test/Transforms/InstCombine
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Dinesh Dwivedi 2c3e3b491e Added select flavour for ABS and NEG(ABS) 
This patch can identify 
  ABS(X) ==> (X >s 0) ? X : -X and (X >s -1) ? X : -X
  ABS(X) ==> (X <s 0) ? -X : X and (X <s 1) ? -X : X
  NABS(X) ==> (X >s 0) ? -X : X and (X >s -1) ? -X : X
  NABS(X) ==> (X <s 0) ? X : -X and (X <s 1) ? X : -X
  
and can transform
  ABS(ABS(X)) -> ABS(X)
  NABS(NABS(X)) -> NABS(X)
  
Differential Revision: http://reviews.llvm.org/D3658



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210312 91177308-0d34-0410-b5e6-96231b3b80d8
2014-06-06 06:54:45 +00:00
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2006-12-15-Range-Test.ll
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2007-01-13-ExtCompareMiscompile.ll
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2007-02-07-PointerCast.ll
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2007-02-23-PhiFoldInfLoop.ll
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2007-03-13-CompareMerge.ll
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2007-03-19-BadTruncChangePR1261.ll
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2007-03-21-SignedRangeTest.ll
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2007-03-25-BadShiftMask.ll
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2007-04-08-SingleEltVectorCrash.ll
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2007-05-14-Crash.ll
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2007-05-18-CastFoldBug.ll
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2007-06-06-AshrSignBit.ll
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2007-06-21-DivCompareMiscomp.ll
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2007-08-02-InfiniteLoop.ll
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2007-09-10-AliasConstFold.ll
Reject alias to undefined symbols in the verifier.
2014-03-12 20:15:49 +00:00
2007-09-17-AliasConstFold2.ll
Reject alias to undefined symbols in the verifier.
2014-03-12 20:15:49 +00:00
2007-10-10-EliminateMemCpy.ll
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2007-10-12-Crash.ll
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2007-11-07-OpaqueAlignCrash.ll
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2007-11-15-CompareMiscomp.ll
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2007-11-22-IcmpCrash.ll
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2007-11-25-CompatibleAttributes.ll
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2007-12-10-ConstFoldCompare.ll
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2007-12-12-GEPScale.ll
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2007-12-16-AsmNoUnwind.ll
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2007-12-18-AddSelCmpSub.ll
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2007-12-28-IcmpSub2.ll
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2008-01-06-BitCastAttributes.ll
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2008-01-06-CastCrash.ll
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2008-01-06-VoidCast.ll
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2008-01-13-AndCmpCmp.ll
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2008-01-14-VarArgTrampoline.ll
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2008-01-21-MismatchedCastAndCompare.ll
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2008-01-27-FloatSelect.ll
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2008-01-29-AddICmp.ll
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2008-02-16-SDivOverflow2.ll
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2008-04-29-VolatileLoadMerge.ll
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2008-06-19-UncondLoad.ll
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2008-06-21-CompareMiscomp.ll
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2008-06-24-StackRestore.ll
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2008-07-10-CastSextBool.ll
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2008-07-10-ICmpBinOp.ll
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2008-07-13-DivZero.ll
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2008-07-16-fsub.ll
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2008-07-16-sse2_storel_dq.ll
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2008-08-05-And.ll
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2008-09-02-VectorCrash.ll
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2008-11-20-DivMulRem.ll
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2008-11-27-IDivVector.ll
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2008-11-27-MultiplyIntVec.ll
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2008-11-27-UDivNegative.ll
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2008-12-17-SRemNegConstVec.ll
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2009-01-05-i128-crash.ll
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2009-01-08-AlignAlloca.ll
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2011-10-07-AlignPromotion.ll
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2012-3-15-or-xor-constant.ll
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2012-02-28-ICmp.ll
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2012-03-10-InstCombine.ll
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2012-04-23-Neon-Intrinsics.ll
AArch64/ARM64: move ARM64 into AArch64's place
2014-05-24 12:50:23 +00:00
2012-04-24-vselect.ll
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2012-04-30-SRem.ll
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2012-05-27-Negative-Shift-Crash.ll
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2012-05-28-select-hang.ll
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2012-06-06-LoadOfPHIs.ll
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2012-07-25-LoadPart.ll
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2012-07-30-addrsp-bitcast.ll
Allow aliases to be unnamed_addr.
2014-06-06 01:20:28 +00:00
2012-08-28-udiv_ashl.ll
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2012-09-17-ZeroSizedAlloca.ll
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2012-09-24-MemcpyFromGlobalCrash.ll
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2012-10-25-vector-of-pointers.ll
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2012-12-14-simp-vgep.ll
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2013-03-05-Combine-BitcastTy-Into-Alloca.ll
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abs_abs.ll
Added select flavour for ABS and NEG(ABS)
2014-06-06 06:54:45 +00:00
abs-1.ll
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add2.ll
Add a testcase where there is an overflow when combining two constants.
2014-06-05 21:29:49 +00:00
add3.ll
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add4.ll
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add-shrink.ll
Convert test to FileCheck.
2014-06-02 21:23:54 +00:00
add-sitofp.ll
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add.ll
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addnegneg.ll
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AddOverFlow.ll
InstCombine: Improvement to check if signed addition overflows.
2014-06-04 15:39:14 +00:00
addrspacecast.ll
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adjust-for-sminmax.ll
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align-2d-gep.ll
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align-addr.ll
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align-external.ll
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alloca.ll
InstCombine: don't drop 'inalloca' in PromoteCastOfAllocation (PR19569)
2014-04-28 17:40:03 +00:00
and2.ll
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and-compare.ll
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and-fcmp.ll
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and-or-not.ll
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and-or.ll
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and.ll
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atomic.ll
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badmalloc.ll
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binop-cast.ll
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bit-checks.ll
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bit-tracking.ll
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bitcast-alias-function.ll
Allow alias to point to an arbitrary ConstantExpr.
2014-06-03 02:41:57 +00:00
bitcast-bigendian.ll
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bitcast-sext-vector.ll
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bitcast-store.ll
[InstCombine] Don't fold bitcast into store if it would need addrspacecast
2014-03-25 17:21:41 +00:00
bitcast-vec-canon.ll
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bitcast-vec-uniform.ll
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bitcast-vector-fold.ll
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bitcount.ll
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bittest.ll
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blend_x86.ll
Post-commit fixes for r209643
2014-05-27 16:54:33 +00:00
bswap-fold.ll
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bswap.ll
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call2.ll
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call-cast-target-inalloca.ll
IR: Conservatively verify inalloca arguments
2014-04-30 17:22:00 +00:00
call-cast-target.ll
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call-intrinsics.ll
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call.ll
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canonicalize_branch.ll
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cast_ptr.ll
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cast-set.ll
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cast.ll
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2014-06-02 22:01:04 +00:00
ceil.ll
Allow constant folding of ceil function whenever feasible
2014-03-24 04:36:06 +00:00
compare-signs.ll
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constant-expr-datalayout.ll
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constant-fold-address-space-pointer.ll
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constant-fold-compare.ll
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constant-fold-gep.ll
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constant-fold-math.ll
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copysign.ll
Allow constant folding of copysign
2014-03-06 05:32:52 +00:00
cos-1.ll
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cos-2.ll
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crash.ll
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deadcode.ll
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debuginfo.ll
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devirt.ll
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disable-simplify-libcalls.ll
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div-shift-crash.ll
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div-shift.ll
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div.ll
Optimize integral reciprocal (udiv 1, x and sdiv 1, x) to not use division. This fires exactly once in a clang bootstrap, but covers a few different results from http://www.cs.utah.edu/~regehr/souper/
2014-05-14 03:03:05 +00:00
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err-rep-cold.ll
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exact.ll
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exp2-1.ll
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exp2-2.ll
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extractvalue.ll
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fast-math.ll
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fcmp-special.ll
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fcmp.ll
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fdiv.ll
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ffs-1.ll
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2014-06-02 22:01:04 +00:00
float-shrink-compare.ll
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fmul.ll
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fneg-ext.ll
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fold-bin-operand.ll
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fold-calls.ll
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fold-fops-into-selects.ll
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fold-phi.ll
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fold-sqrt-sqrtf.ll
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fold-vector-select.ll
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fp-ret-bitcast.ll
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fpcast.ll
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fpextend.ll
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fprintf-1.ll
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fputs-1.ll
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fsub.ll
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fwrite-1.ll
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gep-addrspace.ll
Fix PR19270 - type mismatch caused by invalid optimization.
2014-04-03 17:51:58 +00:00
gepgep.ll
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gepphigep.ll
Add support for combining GEPs across PHI nodes
2014-05-29 20:29:47 +00:00
getelementptr.ll
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hoist_instr.ll
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icmp-logical.ll
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icmp.ll
Added support to optimize comparisons with "lshr exact" of a constant.
2014-06-02 19:19:04 +00:00
idioms.ll
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insert-extract-shuffle.ll
InstCombine: form shuffles from wider range of insert/extractelements
2014-03-07 10:24:44 +00:00
IntPtrCast.ll
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intrinsics.ll
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invariant.ll
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invoke.ll
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isascii-1.ll
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isdigit-1.ll
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JavaCompare.ll
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known_align.ll
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LandingPadClauses.ll
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load3.ll
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load-addrspace-cast.ll
Fix a bug in InstCombine where we would incorrectly attempt to construct a
2014-03-13 22:51:43 +00:00
load-cmp.ll
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load-select.ll
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load.ll
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loadstore-alignment.ll
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logical-select.ll
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malloc-free-delete.ll
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memcpy_chk-1.ll
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memcpy-1.ll
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memcpy-2.ll
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memcpy-from-global.ll
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2014-04-24 00:01:09 +00:00
memcpy-to-load.ll
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memcpy.ll
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merge-icmp.ll
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mul-masked-bits.ll
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mul.ll
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multi-size-address-space-pointer.ll
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multi-use-or.ll
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narrow.ll
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neon-intrinsics.ll
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no-negzero.ll
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not.ll
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nothrow.ll
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objsize-64.ll
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or-fcmp.ll
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or-to-xor.ll
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or.ll
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osx-names.ll
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overflow-mul.ll
Recognize test for overflow in integer multiplication.
2014-04-13 18:23:41 +00:00
overflow.ll
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OverlappingInsertvalues.ll
[InstCombine] Some cleanup in optimization of redundant insertvalue instructions.
2014-05-08 19:50:24 +00:00
phi-merge-gep.ll
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phi-select-constexpr.ll
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phi.ll
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pow-1.ll
Change math intrinsic attributes from readonly to readnone. These
2014-03-06 00:18:15 +00:00
pow-2.ll
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pow-3.ll
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pr2645-0.ll
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pr2645-1.ll
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pr2996.ll
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pr8547.ll
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pr12251.ll
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pr12338.ll
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pr17827.ll
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pr19420.ll
Revert "Revert r206045, "Fix shift by constants for vector.""
2014-04-14 21:50:37 +00:00
PR7357.ll
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preserve-sminmax.ll
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printf-1.ll
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ptr-int-cast.ll
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puts-1.ll
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README.txt
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rem.ll
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2014-06-02 22:01:04 +00:00
round.ll
Allow constant folding of round function whenever feasible
2014-03-07 04:36:21 +00:00
sdiv-1.ll
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select-2.ll
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select-crash.ll
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select-extractelement.ll
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select.ll
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2014-06-02 22:01:04 +00:00
set.ll
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setcc-strength-reduce.ll
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sext.ll
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2014-06-02 22:01:04 +00:00
shift-sra.ll
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shift.ll
Revert "Revert r206045, "Fix shift by constants for vector.""
2014-04-14 21:50:37 +00:00
shufflemask-undef.ll
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shufflevec-constant.ll
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sign-test-and-or.ll
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signed-comparison.ll
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signext.ll
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simplify-demanded-bits-pointer.ll
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simplify-libcalls.ll
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sincospi.ll
ARM64: initial backend import
2014-03-29 10:18:08 +00:00
sink_instruction.ll
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sitofp.ll
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sprintf-1.ll
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sqrt.ll
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srem1.ll
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srem-simplify-bug.ll
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srem.ll
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stack-overalign.ll
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stacksaverestore.ll
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store.ll
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strcspn-1.ll
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strlen-1.ll
Fold strlen(expr ? "str1" : "str2") to x ? len1 : len2. This fires about 330 times in a bootstrap of clang.
2014-05-02 04:11:45 +00:00
strlen-2.ll
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strrchr-2.ll
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strspn-1.ll
…
strstr-1.ll
…
strstr-2.ll
…
strto-1.ll
…
struct-assign-tbaa.ll
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sub-xor.ll
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sub.ll
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toascii-1.ll
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trunc.ll
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udiv_select_to_select_shift.ll
…
udiv-simplify-bug-0.ll
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udiv-simplify-bug-1.ll
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udivrem-change-width.ll
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urem-simplify-bug.ll
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urem.ll
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vec_demanded_elts.ll
Also handle ConstantAggregateZero when optimizing vpermilvar*.
2014-04-29 22:20:40 +00:00
vec_extract_2elts.ll
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vec_extract_elt.ll
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vec_extract_var_elt.ll
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vec_insertelt.ll
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vec_narrow.ll
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vec_phi_extract.ll
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vec_sext.ll
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vec_shuffle.ll
Fix the case when reordering shuffle and binop produces a constant.
2014-05-14 09:05:09 +00:00
vector_gep1.ll
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vector_gep2.ll
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vector-casts.ll
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vector-mul.ll
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vector-srem.ll
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vector-type.ll
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volatile_store.ll
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weak-symbols.ll
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win-math.ll
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x86-crc32-demanded.ll
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xor2.ll
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xor-undef.ll
…
xor.ll
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zero-point-zero-add.ll
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zeroext-and-reduce.ll
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zext-bool-add-sub.ll
Add back commit r210029.
2014-06-02 22:01:04 +00:00
zext-fold.ll
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zext-or-icmp.ll
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zext.ll
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README.txt 

This directory contains test cases for the instcombine transformation.  The
dated tests are actual bug tests, whereas the named tests are used to test
for features that the this pass should be capable of performing.