Value *Ptr = Cand.Load->getPointerOperand();
auto *PtrSCEV = cast<SCEVAddRecExpr>(PSE.getSCEV(Ptr));
auto *PH = L->getLoopPreheader();
+ assert(PH && "Preheader should exist!");
Value *InitialPtr = SEE.expandCodeFor(PtrSCEV->getStart(), Ptr->getType(),
PH->getTerminator());
Value *Initial = new LoadInst(
--- /dev/null
+; XFAIL: *
+; RUN: opt -passes=loop-load-elim -S < %s | FileCheck %s
+; This test demonstrates an assertion failure due to missing preheader in new PM.
+; REQUIRES: asserts
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+
+define void @test(i32* noalias nocapture %A, i32* noalias nocapture readonly %B, i64 %N, i1 %C) {
+entry:
+ br i1 %C, label %for.body, label %for.end
+
+; CHECK: test
+for.body:
+ %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
+ %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
+ %load = load i32, i32* %arrayidx, align 4
+ %arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
+ %load_1 = load i32, i32* %arrayidx2, align 4
+ %add = add i32 %load_1, %load
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %arrayidx_next = getelementptr inbounds i32, i32* %A, i64 %indvars.iv.next
+ store i32 %add, i32* %arrayidx_next, align 4
+ %exitcond = icmp eq i64 %indvars.iv.next, %N
+ br i1 %exitcond, label %for.end, label %for.body
+
+for.end:
+ ret void
+}