1; RUN: opt -basicaa -gvn -S < %s | FileCheck %s
2
3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-f128:128:128-n8:16:32:64"
4
5; GVN shouldn't PRE the load around the loop backedge because it's
6; not actually redundant around the loop backedge, despite appearances
7; if phi-translation is ignored.
8
9; CHECK: define void @test0(i8* %begin)
10; CHECK: loop:
11; CHECK:   %l0 = load i8, i8* %phi
12; CHECK:   call void @bar(i8 %l0)
13; CHECK:   %l1 = load i8, i8* %phi
14define void @test0(i8* %begin) {
15entry:
16  br label %loop
17
18loop:
19  %phi = phi i8* [ %begin, %entry ], [ %next, %loop ]
20  %l0 = load i8, i8* %phi
21  call void @bar(i8 %l0)
22  %l1 = load i8, i8* %phi
23  %next = getelementptr inbounds i8, i8* %phi, i8 %l1
24  br label %loop
25}
26
27declare void @bar(i8)
28