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clang-p2996/llvm/test/Transforms/SCCP
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luxufan b0f7876917 [SCCP] Propagate equality of a not-constant 
The equality state of a not-constant can be used to do constant
propagation. For example,
```
define i32 @equal_not_constant(ptr noundef %p, ptr noundef %q) {
entry:
  %cmp = icmp ne ptr %p, null
  br i1 %cmp, label %if.then, label %if.end

if.then:                                          ; preds = %entry
  %cmp.then = icmp eq ptr %p, %q
  br i1 %cmp.then, label %if.then1, label %if.end

if.then1:                                         ; preds = %if.then
  %cmp.then1 = icmp ne ptr %q, null
  call void @use(i1 %cmp.then1)
  br label %if.end

if.end:
  ret i32 0
}

```
In this case, we can fold `%cmp.then1` as `true`.

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D139289
2022-12-05 19:54:13 +08:00
..
2002-05-02-MissSecondInst.ll
…
2002-05-20-MissedIncomingValue.ll
…
2002-05-21-InvalidSimplify.ll
…
2002-08-30-GetElementPtrTest.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
2003-06-24-OverdefinedPHIValue.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
2003-08-26-InvokeHandling.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
2004-11-16-DeadInvoke.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
2004-12-10-UndefBranchBug.ll
[SCCP] Simplify CFG in SCCP as well
2022-06-30 09:25:03 +02:00
2006-10-23-IPSCCP-Crash.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
2006-12-04-PackedType.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
2006-12-19-UndefBug.ll
…
2007-05-16-InvokeCrash.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
2008-01-27-UndefCorrelate.ll
[SCCP] Simplify CFG in SCCP as well
2022-06-30 09:25:03 +02:00
2008-04-22-multiple-ret-sccp.ll
…
2008-05-23-UndefCallFold.ll
…
2008-06-09-WeakProp.ll
…
2009-01-14-IPSCCP-Invoke.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
2009-05-27-VectorOperandZero.ll
…
2009-09-24-byval-ptr.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
apfloat-basictest.ll
…
apint-array.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
apint-basictest2.ll
…
apint-basictest3.ll
…
apint-basictest4.ll
…
apint-basictest.ll
…
apint-bigarray.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
apint-bigint2.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
apint-bigint.ll
…
apint-ipsccp1.ll
…
apint-ipsccp2.ll
…
apint-ipsccp3.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
apint-ipsccp4.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
apint-load.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
apint-phi.ll
…
apint-select.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
apint-xor.ll
…
arg-count-mismatch.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
arg-type-mismatch.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ashr.ll
[SCCP] convert ashr to lshr for non-negative shift value
2022-09-15 13:54:52 -04:00
assume.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
atomic-load-store.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
atomic.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
binaryops-constexprs.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
binaryops-range-special-cases.ll
[SCCP] convert signed div/rem to unsigned for non-negative operands, 2nd try
2022-09-07 11:56:29 -04:00
bitcast.ll
…
calltest.ll
…
clang-arc-rv.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
comdat-ipo.ll
…
conditions-iter-order.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
conditions-ranges-with-undef.ll
…
conditions-ranges.ll
[SCCP] Propagate equality of a not-constant
2022-12-05 19:54:13 +08:00
constant-range-struct.ll
…
constant-struct.ll
…
crash.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
dangling-block-address.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
deadarg.ll
…
definite-initializer.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
divrem-crash.ll
[SCCP] convert signed div/rem to unsigned for non-negative operands, 2nd try
2022-09-07 11:56:29 -04:00
divrem.ll
[SCCP] convert signed div/rem to unsigned for non-negative operands, 2nd try
2022-09-07 11:56:29 -04:00
domtree-update.ll
…
dont-zap-return.ll
…
float-nan-simplification.ll
…
float-phis.ll
…
fp-bc-icmp-const-fold.ll
…
freeze.ll
…
global-alias-constprop.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
global.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
indirectbr.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
int-phis.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
intrinsics.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ip-add-range-to-call.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ip-constant-ranges.ll
…
ip-ranges-binaryops.ll
…
ip-ranges-casts.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ip-ranges-phis.ll
…
ip-ranges-select.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ip-ranges-sext.ll
[SCCP] Don't mark ranges from branch conditions as potentially undef
2022-06-07 10:20:24 +02:00
ipsccp-addr-taken.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ipsccp-basic.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ipsccp-branch-unresolved-undef.ll
[SCCP] Don't mark edges feasible when resolving undefs
2022-06-22 10:28:27 +02:00
ipsccp-clear-returned.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ipsccp-cycles.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ipsccp-phi-one-pred-dead.ll
[SCCP] Only handle unknown lattice values in resolvedUndefsIn()
2022-07-01 09:14:37 +02:00
ipsccp-predinfo-order.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ipsccp-preserve-analysis.ll
…
ipsccp-range-crashes.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ipsccp-ssa-copy-nested-conds.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ipscp-drop-argmemonly.ll
[IR] Switch everything to use memory attribute
2022-11-04 10:21:38 +01:00
landingpad.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
latticeval-invalidate.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
load-store-range.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
loadtest2.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
loadtest.ll
…
logical-nuke.ll
…
metadata.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
multiple_callbacks.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
musttail-call.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
naked-return.ll
…
opaque-ptr.ll
…
openmp_parallel_for.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
overdefined-div.ll
…
overdefined-ext.ll
…
phi-cycle.ll
…
phis.ll
…
pr27712.ll
…
pr35357.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
pr45185-range-predinfo.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
pr49582-iterator-invalidation.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
pr52253.ll
…
PR16052.ll
…
PR26044.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
PR43857.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
predicateinfo-cond.ll
…
preserve-analysis.ll
[SCCP] Simplify CFG in SCCP as well
2022-06-30 09:25:03 +02:00
pthreads.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
range-and-ip.ll
…
range-and.ll
…
ranges-sext.ll
…
recursion.ll
…
remove-call-inst.ll
[IR] Switch everything to use memory attribute
2022-11-04 10:21:38 +01:00
replace-dereferenceable-ptr-with-undereferenceable.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
report-changed.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
resolvedundefsin-tracked-fn.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
return-argument.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
return-constant.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
return-constants.ll
…
return-zapped.ll
[SCCP] Don't mark edges feasible when resolving undefs
2022-06-22 10:28:27 +02:00
retvalue-undef.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
sccptest.ll
[SCCP] Simplify CFG in SCCP as well
2022-06-30 09:25:03 +02:00
select.ll
…
sitofp.ll
[SCCP] add tests for sitofp; NFC
2022-09-30 09:28:57 -04:00
solve-after-each-resolving-undefs-for-function.ll
…
strictfp-phis-fcmp.ll
[StrictFP][IPSCCP] Constant fold intrinsics with metadata arguments
2022-10-24 11:43:20 -04:00
strictfp-phis-fcmps.ll
[StrictFP][IPSCCP] Constant fold intrinsics with metadata arguments
2022-10-24 11:43:20 -04:00
struct-arg-resolve-undefs.ll
…
switch-constantfold-crash.ll
[SCCP] Don't mark edges feasible when resolving undefs
2022-06-22 10:28:27 +02:00
switch-multiple-undef.ll
…
switch-undef-constantfoldterminator.ll
[SCCP] Don't mark edges feasible when resolving undefs
2022-06-22 10:28:27 +02:00
switch.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
thread_local_acs.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ub-shift.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
ubsan_overflow.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
undef-resolve.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
user-with-multiple-uses.ll
…
vector-bitcast.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
widening.ll
[SCCP] Convert tests to opaque pointers (NFC)
2022-11-01 17:13:31 +01:00
with.overflow.ll
[SCCP] Add support for with.overflow intrinsics
2022-12-05 12:00:22 +01:00