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
4 ; Make sure we create a preheader if we don't have one.
6 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
8 define void @f(ptr noalias nocapture %A, ptr noalias nocapture readonly %B, i64 %N, i1 %C) {
10 br i1 %C, label %for.body, label %for.end
12 ; CHECK: for.body.preheader:
13 ; CHECK-NEXT: %load_initial = load i32, ptr %A
14 ; CHECK-NEXT: br label %for.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