| ; RUN: opt -basicaa -gvn -S < %s | FileCheck %s |
| |
| target 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" |
| |
| ; GVN shouldn't PRE the load around the loop backedge because it's |
| ; not actually redundant around the loop backedge, despite appearances |
| ; if phi-translation is ignored. |
| |
| ; CHECK: define void @test0(i8* %begin) |
| ; CHECK: loop: |
| ; CHECK: %l0 = load i8* %phi |
| ; CHECK: call void @bar(i8 %l0) |
| ; CHECK: %l1 = load i8* %phi |
| define void @test0(i8* %begin) { |
| entry: |
| br label %loop |
| |
| loop: |
| %phi = phi i8* [ %begin, %entry ], [ %next, %loop ] |
| %l0 = load i8* %phi |
| call void @bar(i8 %l0) |
| %l1 = load i8* %phi |
| %next = getelementptr inbounds i8* %phi, i8 %l1 |
| br label %loop |
| } |
| |
| declare void @bar(i8) |
