Sanjay Patel 9dada83d6c [InstSimplify] remove zero-shift-guard fold for general funnel shift ... As discussed on llvm-dev: http://lists.llvm.org/pipermail/llvm-dev/2019-February/130491.html We can't remove the compare+select in the general case because we are treating funnel shift like a standard instruction (as opposed to a special instruction like select/phi). That means that if one of the operands of the funnel shift is poison, the result is poison regardless of whether we know that the operand is actually unused based on the instruction's particular semantics. The motivating case for this transform is the more specific rotate op (rather than funnel shift), and we are preserving the fold for that case because there is no chance of introducing extra poison when there is no anonymous extra operand to the funnel shift. llvm-svn: 354905		2019-02-26 18:26:56 +00:00
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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] fold extracting from std::pair (2/2)	2018-08-03 05:39:48 +00:00
add-mask.ll	…
add.ll	[InstSimplify] simplify add instruction if two operands are negative	2018-07-12 03:06:04 +00:00
addsub.ll	…
and-icmps-same-ops.ll	…
and-or-icmp-zero.ll	…
assume.ll	[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.	2018-05-09 02:40:45 +00:00
bitcast-vector-fold.ll	…
bitreverse-fold.ll	…
bitreverse.ll	…
bswap.ll	…
call.ll	[InstSimplify] remove zero-shift-guard fold for general funnel shift	2019-02-26 18:26:56 +00:00
cast-unsigned-icmp-cmp-0.ll	[PatternMatch] allow undef elements when matching a vector zero	2018-04-22 17:07:44 +00:00
cast.ll	…
compare.ll	llvm: Add support for "-fno-delete-null-pointer-checks"	2018-07-09 22:27:23 +00:00
constantfold-add-nuw-allones-to-allones.ll	[InstSimplify] add nuw %x, -1 -> -1 fold.	2018-06-08 15:44:47 +00:00
constantfold-shl-nuw-C-to-C.ll	[NFC][InstSimplify] One more negative test for shl nuw C, %x -> C fold.	2018-06-07 21:19:45 +00:00
dead-code-removal.ll	…
div.ll	[InstSimplify] fold div/rem of zexted bool	2018-06-25 18:51:21 +00:00
exact-nsw-nuw.ll	…
extract-element.ll	[InstCombine] remove dead code from visitExtractElement	2018-12-05 23:09:33 +00:00
fast-math.ll	[FPEnv] PatternMatcher support for checking FNEG ignoring signed zeros	2018-10-09 21:48:00 +00:00
fcmp-select.ll	[InstSimplify] fold select (fcmp X, Y), X, Y	2018-11-05 21:51:39 +00:00
fdiv.ll	[InstSimplify] add tests for FP with undef operand; NFC	2018-02-27 20:17:18 +00:00
floating-point-arithmetic.ll	[InstCombine] InstCombine and InstSimplify for minimum and maximum	2018-10-19 19:01:26 +00:00
floating-point-compare.ll	[InstSimplify] use any-zero matcher for fcmp folds	2019-02-20 14:34:00 +00:00
fold-builtin-fma.ll	…
fold-intrinsics.ll	…
fp-nan.ll	[InstSimplify] fp_binop X, NaN --> NaN	2018-03-21 19:31:53 +00:00
fp-undef.ll	[InstSimplify] add tests for undef + partial undef constant folding; NFC	2018-11-30 22:51:34 +00:00
gep.ll	[InstSimplify] regenerate checks, move tests; NFC	2018-03-23 15:31:31 +00:00
icmp-abs-nabs.ll	[InstSimplify] fold icmp based on range of abs/nabs (2nd try)	2018-11-01 14:07:39 +00:00
icmp-bool-constant.ll	[PatternMatch] enhance m_One() to ignore undef elements in vectors	2018-02-17 16:00:42 +00:00
icmp-constant.ll	…
icmp-ranges.ll	…
implies.ll	…
insertelement.ll	…
known-never-nan.ll	[InstSimplify] use isKnownNeverNaN to fold more fcmp ord/uno	2018-08-21 14:45:13 +00:00
load-relative-32.ll	…
load-relative.ll	…
load.ll	…
log-exp-intrinsic.ll	[InstSimplify] allow exp/log simplifications with only 'reassoc' FMF	2018-02-12 23:51:23 +00:00
log2-pow2-intrinsic.ll	[InstSimplify] Missed optimization in math expression: log10(pow(10.0,x)) == x, log2(pow(2.0,x)) == x	2019-02-03 03:48:30 +00:00
log10-pow10-intrinsic.ll	[InstSimplify] Missed optimization in math expression: log10(pow(10.0,x)) == x, log2(pow(2.0,x)) == x	2019-02-03 03:48:30 +00:00
logic-of-fcmps.ll	…
maxmin.ll	…
mul.ll	[PatternMatch] allow undef elements when matching a vector zero	2018-04-22 17:07:44 +00:00
negate.ll	[PatternMatch] allow undef elements when matching a vector zero	2018-04-22 17:07:44 +00:00
noalias-ptr.ll	…
or-icmps-same-ops.ll	…
or.ll	[PatternMatch, InstSimplify] enhance m_AllOnes() to ignore undef elements in vectors	2018-02-18 18:05:08 +00:00
past-the-end.ll	…
phi.ll	…
pr28725.ll	…
pr33957.ll	…
ptr_diff.ll	…
reassociate.ll	…
rem.ll	[InstSimplify] fold srem with sext bool divisor	2018-06-26 15:32:54 +00:00
require-dominator.ll	…
returned.ll	…
saturating-add-sub.ll	[InstSimplify] Simplify saturating add/sub + icmp	2018-12-17 17:45:18 +00:00
sdiv.ll	[InstrSimplify] fold sdiv if two operands are negated and non-overflow	2018-07-21 12:27:54 +00:00
select-and-cmp.ll	[InstSimplify] Fold another Select with And/Or pattern	2018-07-31 14:17:15 +00:00
select-implied.ll	[InstSimplify] fold select with implied condition	2018-11-29 18:44:39 +00:00
select-or-cmp.ll	[InstSimplify] Fold another Select with And/Or pattern	2018-07-31 14:17:15 +00:00
select.ll	Reland r301880(!): "[InstSimplify] Handle selects of GEPs with 0 offset"	2018-04-24 00:25:01 +00:00
shift-128-kb.ll	…
shift-knownbits.ll	…
shift.ll	[InstSimplify] fold extracting from std::pair (1/2)	2018-08-01 04:40:32 +00:00
shr-nop.ll	[InstSimplify] move tests for shifts; NFC	2018-04-21 16:58:00 +00:00
shr-scalar-vector-consistency.ll	[PatternMatch] Handle undef vectors consistently	2018-11-20 16:08:19 +00:00
shufflevector.ll	…
signed-div-rem.ll	…
simplify-nested-bitcast.ll	…
srem.ll	[InstSimplify] fold srem instruction if its two operands are negated.	2018-07-20 13:00:47 +00:00
sub.ll	[InstCombine] move/add tests for sub/neg; NFC	2018-10-19 17:26:22 +00:00
undef.ll	…
vec-cmp.ll	…
vector_gep.ll	[ConstantFolding, InstSimplify] Handle more vector GEPs	2018-03-15 16:00:29 +00:00
vector_ptr_bitcast.ll	…