; RUN: opt -loop-load-elim -S < %s | FileCheck %s ; No loop-carried forwarding: The intervening store to A[i] kills the stored ; value from the previous iteration. ; ; for (unsigned i = 0; i < 100; i++) { ; A[i] = 1; ; A[i+1] = A[i] + B[i]; ; } target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" define void @f(i32* noalias nocapture %A, i32* noalias nocapture readonly %B, i64 %N) { entry: br label %for.body for.body: ; preds = %for.body, %entry ; CHECK-NOT: %store_forwarded %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv store i32 1, i32* %arrayidx, align 4 %a = load i32, i32* %arrayidx, align 4 %arrayidxB = getelementptr inbounds i32, i32* %B, i64 %indvars.iv %b = load i32, i32* %arrayidxB, align 4 ; CHECK: %add = add i32 %b, %a %add = add i32 %b, %a %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: ; preds = %for.body ret void }