Sanjay Patel 6fe2359aa7 [ConstantFold] fold fsub -0.0, undef to undef rather than NaN ... A question about this behavior came up on llvm-dev: http://lists.llvm.org/pipermail/llvm-dev/2020-February/139003.html ...and as part of backend improvements in D73978, but this is an IR change first because we already have fairly thorough tests in place here. We decided not to implement a more general change that would have folded any FP binop with nearly arbitrary constant + undef operand to undef because that is not theoretically correct (even if it is practically correct). Differential Revision: https://reviews.llvm.org/D74713		2020-02-21 08:03:19 -05:00
..
AMDGPU	[AMDGPU][ConstantFolding] Fold llvm.amdgcn.fmul.legacy intrinsic	2020-02-19 16:01:30 +00:00
binop-identity-undef.ll	[ConstantFold] Handle identity folds at top of ConstantFoldBinaryInst	2019-11-17 21:30:14 +00:00
bitcount.ll	[ConstantFolding] Fold undef for integer intrinsics	2019-01-11 21:18:00 +00:00
cast-vector.ll
copysign.ll	[ConstFolding] move tests for copysign; NFC	2019-11-26 16:54:46 -05:00
fneg.ll	Add FNeg support to InstructionSimplify	2019-05-06 16:05:10 +00:00
fp-undef.ll	[ConstantFold] fold fsub -0.0, undef to undef rather than NaN	2020-02-21 08:03:19 -05:00
funnel-shift.ll	[ConstantFolding] Fold undef for integer intrinsics	2019-01-11 21:18:00 +00:00
gep-alias.ll	Fix pointer width in test from r366754.	2019-07-22 23:32:41 +00:00
gep-constanfolding-error.ll
gep-zeroinit-vector.ll	[ConstantFold] Fold extractelement of getelementptr	2019-10-28 18:32:39 +00:00
gep.ll	Prevent Constant Folding From Optimizing inrange GEP	2018-09-11 01:53:36 +00:00
math-1.ll	[ConstantFolding] Fold constant calls to log2()	2019-09-30 20:53:23 +00:00
math-2.ll	[ConstantFolding] Fold calls to FP remainder function	2020-02-12 13:21:18 +02:00
min-max.ll	[ConstantFolding] Constant fold minimum and maximum intrinsics	2018-10-19 18:15:32 +00:00
rint.ll	[ConstantFolding] Expand folding of some library functions	2019-09-12 21:23:22 +00:00
round.ll	[ConstantFolding] Expand folding of some library functions	2019-09-12 21:23:22 +00:00
saturating-add-sub.ll	[ConstantFolding] Fold undef for integer intrinsics	2019-01-11 21:18:00 +00:00
smul-fix-sat.ll	[ConstantFolding] Add constant folding for smul.fix and smul.fix.sat	2019-06-19 14:28:03 +00:00
smul-fix.ll	[ConstantFolding] Add constant folding for smul.fix and smul.fix.sat	2019-06-19 14:28:03 +00:00
timeout.ll
trunc.ll	[ConstantFolding] Expand folding of some library functions	2019-09-12 21:23:22 +00:00
vector-undef-elts.ll
vectorgep-crash.ll
vscale-getelementptr.ll	Reapply: [SVE] Fix bug in simplification of scalable vector instructions	2020-02-05 10:00:09 -08:00
vscale-shufflevector.ll	Reapply: [SVE] Fix bug in simplification of scalable vector instructions	2020-02-05 10:00:09 -08:00
vscale.ll	[ConstantFold][SVE] Fix constant fold for FoldReinterpretLoadFromConstPtr.	2020-02-12 10:24:50 -08:00