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1; New PM does not allow a pass to require another pass to have been run2; RUN: opt -passes=loop-simplify,loop-load-elim -S < %s | FileCheck %s3 4; Make sure we create a preheader if we don't have one.5 6target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"7 8define void @f(ptr noalias nocapture %A, ptr noalias nocapture readonly %B, i64 %N, i1 %C) {9entry:10 br i1 %C, label %for.body, label %for.end11 12; CHECK: for.body.preheader:13; CHECK-NEXT: %load_initial = load i32, ptr %A14; CHECK-NEXT: br label %for.body15 16; CHECK: for.body:17for.body:18; CHECK-NEXT: %store_forwarded = phi i32 [ %load_initial, %for.body.preheader ], [ %add, %for.body ]19 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]20 %arrayidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv21 %load = load i32, ptr %arrayidx, align 422 %arrayidx2 = getelementptr inbounds i32, ptr %B, i64 %indvars.iv23 %load_1 = load i32, ptr %arrayidx2, align 424; CHECK: %add = add i32 %load_1, %store_forwarded25 %add = add i32 %load_1, %load26 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 127 %arrayidx_next = getelementptr inbounds i32, ptr %A, i64 %indvars.iv.next28 store i32 %add, ptr %arrayidx_next, align 429 %exitcond = icmp eq i64 %indvars.iv.next, %N30 br i1 %exitcond, label %for.end, label %for.body31 32for.end:33 ret void34}35