4 ;; From: test/Programs/SingleSource/richards_benchmark.c
5 ;; Function: struct task *handlerfn(struct packet *pkt)
7 ;; Error: PreSelection puts the arguments of the Phi just before
8 ;; the Phi instead of in predecessor blocks. This later
9 ;; causes llc to produces an invalid register <NULL VALUE>
10 ;; for the phi arguments.
12 %struct..packet = type { ptr, i32, i32, i32, [4 x i8] }
13 %struct..task = type { ptr, i32, i32, ptr, i32, ptr, i32, i32 }
14 @v1 = external global i32 ; <ptr> [#uses=1]
15 @v2 = external global i32 ; <ptr> [#uses=1]
17 define ptr @handlerfn(ptr %pkt.2) {
19 %tmp.1 = icmp ne ptr %pkt.2, null ; <i1> [#uses=1]
20 br i1 %tmp.1, label %cond_false, label %cond_continue
22 cond_false: ; preds = %entry
23 br label %cond_continue
25 cond_continue: ; preds = %cond_false, %entry
26 %mem_tmp.0 = phi ptr [ @v2, %cond_false ], [ @v1, %entry ] ; <ptr> [#uses=1]
27 call void @append( ptr %pkt.2, ptr %mem_tmp.0 )
31 declare void @append(ptr, ptr)