1 ; RUN: opt -basicaa -gvn -S < %s | FileCheck %s 2 3 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" 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* %phi 12 ; CHECK: call void @bar(i8 %l0) 13 ; CHECK: %l1 = load i8* %phi 14 define void @test0(i8* %begin) { 15 entry: 16 br label %loop 17 18 loop: 19 %phi = phi i8* [ %begin, %entry ], [ %next, %loop ] 20 %l0 = load i8* %phi 21 call void @bar(i8 %l0) 22 %l1 = load i8* %phi 23 %next = getelementptr inbounds i8* %phi, i8 %l1 24 br label %loop 25 } 26 27 declare void @bar(i8) 28
