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llvm-project/llvm/test/Transforms/InstSimplify
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Noah Goldstein 2622b2f409 [ValueTracking] Use select condition to help determine if select is non-zero 
In `select c, x, y` the condition `c` dominates the resulting `x` or
`y` chosen by the `select`. This adds logic to `isKnownNonZero` to try
and use the `icmp` for the `c` condition to see if it implies the
select `x` or `y` are known non-zero.

For example in:
    ```
    %c = icmp ugt i8 %x, %C
    %r = select i1 %c, i8 %x, i8 %y
    ```
    The true arm of select `%x` is non-zero (when "returned" by the
    `select`) because `%c` being true implies `%x` is non-zero.

Alive2 Links (with `x {pred} C`):
    - EQ  iff `C != 0`:
        - https://alive2.llvm.org/ce/z/umLabn
    - NE  iff `C == 0`:
        - https://alive2.llvm.org/ce/z/DQvy8Y
    - UGT [always]:
        - https://alive2.llvm.org/ce/z/HBkjgQ
    - UGE iff `C != 0`:
        - https://alive2.llvm.org/ce/z/LDNifB
    - SGT iff `C s>= 0`:
        - https://alive2.llvm.org/ce/z/QzWDj3
    - SGE iff `C s> 0`:
        - https://alive2.llvm.org/ce/z/rR4g3D
    - SLT iff `C s<= 0`:
        - https://alive2.llvm.org/ce/z/uysayx
    - SLE iff `C s< 0`:
        - https://alive2.llvm.org/ce/z/2jYc7e

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D147900
2023-05-23 13:52:40 -05:00
..
ConstProp
[NFC][Py Reformat] Reformat lit.local.cfg python files in llvm
2023-05-17 17:03:15 +02:00
X86
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
2010-12-20-Boolean.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
2011-01-14-Thread.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
2011-02-01-Vector.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
2011-09-05-InsertExtractValue.ll
[InstSimplify] Fix poison safety in insertvalue fold
2023-02-16 09:39:44 +01:00
2011-10-27-BinOpCrash.ll
[NFC] Port all InstSimplify tests to -passes= syntax
2022-12-08 02:38:45 +03:00
2011-11-23-MaskedBitsCrash.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
2013-04-19-ConstantFoldingCrash.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
abs_intrinsic.ll
[ValueTracking] Fix i1 abs range (PR62760)
2023-05-17 12:31:13 +02:00
add_vp.ll
[NFC] Port all InstSimplify tests to -passes= syntax
2022-12-08 02:38:45 +03:00
add-mask.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
add.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
addsub.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
and-icmps-same-ops.ll
[InstSimplify] use isImpliedCondition() instead of semi-duplicated code
2022-08-05 10:59:09 -04:00
and-or-icmp-ctpop.ll
[InstSimplify] Fold (ctpop(X) == N) || (X != 0) into X != 0 where N > 0
2022-04-04 23:23:34 +09:00
and-or-icmp-min-max.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
and-or-icmp-nullptr.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
and-or-icmp-zero.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
and-or-implied-cond.ll
[NFC] Port all InstSimplify tests to -passes= syntax
2022-12-08 02:38:45 +03:00
and.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
AndOrXor.ll
[InstSimplify] restrict logic fold with partial undef vector
2022-11-14 12:09:23 -05:00
assume_icmp.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
assume-non-zero.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
bitcast-vector-fold.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
bitreverse-fold.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
bitreverse.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
bswap.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
call.ll
[ValueTracking] Fix i1 abs range (PR62760)
2023-05-17 12:31:13 +02:00
canonicalize.ll
LangRef: Add "dynamic" option to "denormal-fp-math"
2023-04-29 08:44:59 -04:00
cast-unsigned-icmp-cmp-0.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
cast.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
cmp_ext.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
cmp_of_min_max.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
cmp-alloca-offsets.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
cmp-vec-fast-path.ll
[IRBuilder] Use canonical i64 type for insertelement index used by vector splats.
2023-01-11 14:08:06 +00:00
compare.ll
[ValueTracking] Use select condition to help determine if select is non-zero
2023-05-23 13:52:40 -05:00
constant-fold-fp-denormal.ll
LangRef: Add "dynamic" option to "denormal-fp-math"
2023-04-29 08:44:59 -04:00
constantfold-add-nuw-allones-to-allones.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
constantfold-shl-nuw-C-to-C.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
constfold-constrained.ll
[ConstantFolding] Fix folding of constrained compare intrinsics
2022-02-27 10:19:19 +07:00
ctpop-pow2.ll
[ValueTracking] Add KnownBits patterns xor(x, x - 1) and and(x, -x) for knowing upper bits to be zero
2023-02-18 13:31:17 -06:00
dead-code-removal.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
distribute.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
div-by-0-guard-before-smul_ov-not.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
div-by-0-guard-before-smul_ov.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
div-by-0-guard-before-umul_ov-not.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
div-by-0-guard-before-umul_ov.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
div.ll
[InstSimplify] sdiv a (1 srem b) --> a
2023-04-24 14:37:07 +02:00
domcondition.ll
[InstSimplify] Precommit tests for dominate conditions are not single predecessor; NFC
2023-04-15 16:12:31 +08:00
exact-nsw-nuw.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
extract-element.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
extract-vector.ll
[IR] Move vector.insert/vector.extract out of experimental namespace
2022-06-27 10:48:45 +00:00
fast-math-strictfp.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
fast-math.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
fcmp-select.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
fcmp.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
fdiv-strictfp.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
fdiv.ll
InstSimplify: Fold fdiv nnan ninf x, 0 -> poison
2022-11-07 08:43:22 -08:00
floating-point-arithmetic-strictfp.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
floating-point-arithmetic.ll
InstSimplify: Combine computeKnownFPClass calls and pass AssumptionCache
2023-05-18 23:29:47 +01:00
floating-point-compare.ll
Reapply "InstSimplify: Pass AssumptionCache to isKnownNeverInfinity"
2023-05-23 08:48:25 +01:00
fminmax-folds.ll
[InstSimplify] Extend handlng of fp min/max.
2023-04-27 10:45:27 +07:00
fold-intrinsics.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
fold-vscale.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
fp-nan.ll
[InstSimplify] fix/improve folding with an SNaN vector element operand
2023-02-14 19:10:56 -05:00
fp-undef-poison-strictfp.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
fp-undef-poison.ll
[InstSimplify] add test for fsub with inf operand; NFC
2022-11-11 09:17:20 -05:00
fptoi-range.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
fptoi-sat.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
freeze-noundef.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
freeze.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
gc_relocate.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
gep.ll
[IRBuilder] Use canonical i64 type for insertelement index used by vector splats.
2023-01-11 14:08:06 +00:00
icmp-abs-nabs.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
icmp-bool-constant.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
icmp-constant.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
icmp-not-bool-constant.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
icmp-ranges.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
icmp.ll
[InstSimplify] allow poison/undef in constant match for "C - X ==/!= X -> false/true"
2022-09-06 08:19:30 -04:00
implies.ll
[ValueTracking] add UGT/UGE and SGT/SGE in isImpliedCondOperands
2023-05-04 16:59:07 +02:00
insert-vector.ll
[IR] Move vector.insert/vector.extract out of experimental namespace
2022-06-27 10:48:45 +00:00
insertelement.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
insertvalue.ll
[InstSimplify] Fix poison safety in insertvalue fold
2023-02-16 09:39:44 +01:00
invalid-load-operand-infinite-loop.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
invariant.group-load.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
is_fpclass.ll
[Vectorize] Fix vectorization, scalarization and folding of llvm.is.fpclass
2023-04-24 13:42:08 +01:00
known-never-infinity.ll
ValueTracking: Add some regression tests for fabs handling in computeKnownFPClass
2023-05-22 10:33:10 +01:00
known-never-nan.ll
IR: Add nofpclass parameter attribute
2023-02-24 07:41:29 -04:00
known-non-zero-opaque-ptrs.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
known-non-zero.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
load-relative-32.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
load-relative.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
load.ll
[AggressiveInstCombine] Pre-Commit test for D144445 (NFC)
2023-03-23 23:31:22 +09:00
log2-pow2-intrinsic.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
log10-pow10-intrinsic.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
log-exp-intrinsic.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
logic-of-fcmps.ll
InstSimplify: Pass AssumptionCache through more isKnownNeverNaN queries
2023-05-19 00:48:03 +01:00
maxmin_intrinsics.ll
[InstSimplify] don't commute constant expression operand in min/max calls
2022-09-26 16:01:09 -04:00
maxmin.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
mul.ll
[InstSimplify] reduce "mul nsw i1" to "false"
2023-01-18 13:51:40 -05:00
named-vector-shuffle-reverse.ll
[NFC] Port all InstSimplify tests to -passes= syntax
2022-12-08 02:38:45 +03:00
negate.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
noalias-ptr.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
null-ptr-is-valid-attribute.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
null-ptr-is-valid.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
opaque-ptr.ll
[NFC] Port all InstSimplify tests to -passes= syntax
2022-12-08 02:38:45 +03:00
or-icmps-same-ops.ll
[InstSimplify] use isImpliedCondition() instead of semi-duplicated code
2022-08-05 10:59:09 -04:00
or.ll
[InstSimplify] (~A & B) | ~(A | B) --> ~A with logical and
2022-11-07 10:03:18 +00:00
past-the-end.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
phi-cse.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
phi.ll
[InstSimplify] Adjust context instruction when threading phi (PR61312)
2023-03-10 10:34:27 +01:00
pr28725.ll
[ConstExpr] Remove select constant expression
2023-03-16 10:32:08 +01:00
pr33957.ll
[NFC] Port all InstSimplify tests to -passes= syntax
2022-12-08 02:38:45 +03:00
pr49495.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
ptr_diff.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
reassociate.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
redundant-null-check-in-uadd_with_overflow-of-nonnull-ptr.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
rem.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
require-dominator.ll
[Tests] Remove unnecessary bitcasts from opaque pointer tests (NFC)
2022-06-22 14:15:46 +02:00
result-of-add-of-negative-is-non-zero-and-no-underflow.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
result-of-usub-by-nonzero-is-non-zero-and-no-overflow.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
result-of-usub-is-non-zero-and-no-overflow.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
returned.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
round-intrinsics.ll
[InstSimplify] fold FP rounding intrinsic with rounded operand
2022-07-31 10:00:27 -04:00
saturating-add-sub.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
sdiv.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
select_or_and.ll
[InstSimplify] with logical ops: (X & Y) == -1 ? X : -1 --> -1
2023-04-26 15:53:02 +08:00
select-and-cmp.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
select-implied.ll
[InstCombine] Improvement the analytics through the dominating condition
2023-03-01 17:03:34 +08:00
select-inseltpoison.ll
[InstSimplify] with poison-safe logical ops: (X && Y) || X --> X
2023-01-20 17:35:24 -05:00
select-logical.ll
[InstSimplify] !(X && Y) || X --> true (for poison-safe logical ops)
2023-01-29 10:24:52 -05:00
select-maxmin.ll
Reapply [InstSimplify] Support all instructions in simplifyWithOpReplaced()
2023-04-25 15:45:32 +02:00
select-or-cmp.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
select.ll
[Instsimplfy] X == Y ? 0 : X ^ Y --> X ^ Y
2023-05-17 18:36:39 +08:00
shift-128-kb.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
shift-knownbits.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
shift.ll
[InstSimplify] Simplify (shl nsw nuw X, BitWidth - 1) -> 0
2023-03-06 20:29:53 -06:00
shr-nop.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
shr-scalar-vector-consistency.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
shufflevector-inseltpoison.ll
[InstSimplify] Update to handle new shufflevector semantics
2023-05-03 21:31:19 +01:00
shufflevector.ll
[InstSimplify] Update to handle new shufflevector semantics
2023-05-03 21:31:19 +01:00
signed-div-rem.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
simplify-nested-bitcast.ll
[NFC] Port all InstSimplify tests to -passes= syntax
2022-12-08 02:38:45 +03:00
smul_fix.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
srem.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
strictfp-fadd.ll
[InstSimplify] fix/improve folding with an SNaN vector element operand
2023-02-14 19:10:56 -05:00
strictfp-fsub.ll
[FPEnv][InstSimplify] 0.0 - -X ==> X
2022-08-11 11:35:33 -04:00
strictfp-sqrt-nonneg.ll
ValueTracking: Drop rounding mode check for constrained_sqrt in CannotBeNegativeZero
2023-05-22 10:49:10 +01:00
sub.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00
undef.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
vec-cmp.ll
[NFCI] Regenerate instsimplify test checks
2022-04-03 20:55:15 +02:00
vec-icmp-of-cast.ll
[InstSimplify] Extend simplifications for (icmp ({z|s}ext X), C) where C is vector
2023-04-03 11:04:57 -05:00
vector_gep.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
vector_ptr_bitcast.ll
[InstSimplify] Convert tests to opaque pointers (NFC)
2022-06-10 17:16:28 +02:00
vector-inseltextelt.ll
[instsimplify] Move (extelt (inselt Vec, Value, Index), Index) -> Value from InstCombine
2022-10-17 15:22:06 -07:00
vscale-inseltpoison.ll
[LLVM] Remove support for constant scalable vector GEPs.
2023-03-14 16:48:33 +00:00
vscale.ll
[LLVM] Remove support for constant scalable vector GEPs.
2023-03-14 16:48:33 +00:00
xor.ll
[test] Use -passes=instsimplify instead of -instsimplify in a number of tests. NFC
2022-02-07 14:26:58 +01:00