Inst->setMetadata("noalias", SecondLevelOtherAliasScopeList);
}
+/// Find the base pointer of an array access.
+///
+/// This should be equivalent to ScalarEvolution::getPointerBase, which we
+/// cannot use here the IR is still under construction which ScalarEvolution
+/// assumes to not be modified.
+static Value *findBasePtr(Value *Val) {
+ while (true) {
+ if (auto *Gep = dyn_cast<GEPOperator>(Val)) {
+ Val = Gep->getPointerOperand();
+ continue;
+ }
+ if (auto *Cast = dyn_cast<BitCastOperator>(Val)) {
+ Val = Cast->getOperand(0);
+ continue;
+ }
+
+ break;
+ }
+
+ return Val;
+}
+
void ScopAnnotator::annotate(Instruction *Inst) {
if (!Inst->mayReadOrWriteMemory())
return;
if (!Ptr)
return;
- auto *PtrSCEV = SE->getSCEV(Ptr);
- auto *BaseSCEV = SE->getPointerBase(PtrSCEV);
- auto *SU = dyn_cast<SCEVUnknown>(BaseSCEV);
-
- if (!SU)
- return;
-
- auto *BasePtr = SU->getValue();
-
+ Value *BasePtr = findBasePtr(Ptr);
if (!BasePtr)
return;
--- /dev/null
+; RUN: opt %loadPolly -polly-codegen -S < %s | FileCheck %s
+;
+; llvm.org/PR48422
+; Use of ScalarEvolution in Codegen not possible because DominatorTree is not updated.
+;
+target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+
+define dso_local void @func(i1 %b, i1 %p3, [14 x i32]* %d) local_unnamed_addr {
+entry:
+ %conv = zext i1 %b to i16
+ %add = select i1 %p3, i32 21, i32 20
+ br label %for.body.us.us
+
+for.body.us.us:
+ %e.062.us.us = phi i16 [ %inc.us.us, %omp.inner.for.cond.simd.if.end.loopexit_crit_edge.us.us ], [ %conv, %entry ]
+ %idxprom.us.us = sext i16 %e.062.us.us to i64
+ br i1 %b, label %omp.inner.for.body.us.us.us.preheader, label %omp.inner.for.body.us63.us.preheader
+
+omp.inner.for.body.us63.us.preheader:
+ %arrayidx25.us.le71.us = getelementptr inbounds [14 x i32], [14 x i32]* %d, i64 %idxprom.us.us, i64 0
+ %0 = load i32, i32* %arrayidx25.us.le71.us, align 4
+ br label %omp.inner.for.cond.simd.if.end.loopexit_crit_edge.us.us
+
+omp.inner.for.body.us.us.us.preheader:
+ %arrayidx25.us.le.us.us = getelementptr inbounds [14 x i32], [14 x i32]* %d, i64 %idxprom.us.us, i64 0
+ %1 = load i32, i32* %arrayidx25.us.le.us.us, align 4
+ %conv27.us.le.us.us = select i1 undef, i16 0, i16 undef
+ br label %omp.inner.for.cond.simd.if.end.loopexit_crit_edge.us.us
+
+omp.inner.for.cond.simd.if.end.loopexit_crit_edge.us.us:
+ %conv27.lcssa.us.us = phi i16 [ undef, %omp.inner.for.body.us63.us.preheader ], [ %conv27.us.le.us.us, %omp.inner.for.body.us.us.us.preheader ]
+ %inc.us.us = add i16 %e.062.us.us, 1
+ %conv2.us.us = sext i16 %inc.us.us to i32
+ %cmp.us.us = icmp sgt i32 %add, %conv2.us.us
+ br i1 %cmp.us.us, label %for.body.us.us, label %for.cond.cleanup.loopexit
+
+for.cond.cleanup.loopexit:
+ ret void
+}
+
+
+; CHECK-LABEL: @func(
+; CHECK: polly.stmt.omp.inner.for.body.us.us.us.preheader5:
+; CHECK: load i32, i32* %scevgep6, align 4, !alias.scope !0, !noalias !2
+
+; CHECK: !0 = distinct !{!0, !1, !"polly.alias.scope.MemRef_d"}
+; CHECK: !1 = distinct !{!1, !"polly.alias.scope.domain"}
+; CHECK: !2 = !{}