1; New PM does not allow a pass to require another pass to have been run 2; RUN: opt -passes=loop-simplify,loop-load-elim -S < %s | FileCheck %s 3 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.end 11 12; CHECK: for.body.preheader: 13; CHECK-NEXT: %load_initial = load i32, ptr %A 14; CHECK-NEXT: br label %for.body 15 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.iv 21 %load = load i32, ptr %arrayidx, align 4 22 %arrayidx2 = getelementptr inbounds i32, ptr %B, i64 %indvars.iv 23 %load_1 = load i32, ptr %arrayidx2, align 4 24; CHECK: %add = add i32 %load_1, %store_forwarded 25 %add = add i32 %load_1, %load 26 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 27 %arrayidx_next = getelementptr inbounds i32, ptr %A, i64 %indvars.iv.next 28 store i32 %add, ptr %arrayidx_next, align 4 29 %exitcond = icmp eq i64 %indvars.iv.next, %N 30 br i1 %exitcond, label %for.end, label %for.body 31 32for.end: 33 ret void 34} 35