}
SDValue Addr = LD->getOperand(1);
+ SDValue Vector = N->getOperand(0);
// Search for a use of the address operand that is an increment.
for (SDNode::use_iterator UI = Addr.getNode()->use_begin(), UE =
Addr.getNode()->use_end(); UI != UE; ++UI) {
// would create a cycle.
if (User->isPredecessorOf(LD) || LD->isPredecessorOf(User))
continue;
+ // Also check that add is not used in the vector operand. This would also
+ // create a cycle.
+ if (User->isPredecessorOf(Vector.getNode()))
+ continue;
// If the increment is a constant, it must match the memory ref size.
SDValue Inc = User->getOperand(User->getOperand(0) == Addr ? 1 : 0);
SmallVector<SDValue, 8> Ops;
Ops.push_back(LD->getOperand(0)); // Chain
if (IsLaneOp) {
- Ops.push_back(N->getOperand(0)); // The vector to be inserted
+ Ops.push_back(Vector); // The vector to be inserted
Ops.push_back(N->getOperand(2)); // The lane to be inserted in the vector
}
Ops.push_back(Addr);
--- /dev/null
+; RUN: llc %s
+
+; This used to assert with "Overran sorted position" in AssignTopologicalOrder
+; due to a cycle created in performPostLD1Combine.
+
+target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
+target triple = "arm64-apple-ios7.0.0"
+
+; Function Attrs: nounwind ssp
+define void @f(double* %P1) #0 {
+entry:
+ %arrayidx4 = getelementptr inbounds double* %P1, i64 1
+ %0 = load double* %arrayidx4, align 8, !tbaa !1
+ %1 = load double* %P1, align 8, !tbaa !1
+ %2 = insertelement <2 x double> undef, double %0, i32 0
+ %3 = insertelement <2 x double> %2, double %1, i32 1
+ %4 = fsub <2 x double> zeroinitializer, %3
+ %5 = fmul <2 x double> undef, %4
+ %6 = extractelement <2 x double> %5, i32 0
+ %cmp168 = fcmp olt double %6, undef
+ br i1 %cmp168, label %if.then172, label %return
+
+if.then172: ; preds = %cond.end90
+ %7 = tail call i64 @llvm.objectsize.i64.p0i8(i8* undef, i1 false)
+ br label %return
+
+return: ; preds = %if.then172, %cond.end90, %entry
+ ret void
+}
+
+; Function Attrs: nounwind readnone
+declare i64 @llvm.objectsize.i64.p0i8(i8*, i1) #1
+
+attributes #0 = { nounwind ssp "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nounwind readnone }
+
+!1 = metadata !{metadata !2, metadata !2, i64 0}
+!2 = metadata !{metadata !"double", metadata !3, i64 0}
+!3 = metadata !{metadata !"omnipotent char", metadata !4, i64 0}
+!4 = metadata !{metadata !"Simple C/C++ TBAA"}