1; This test checks to make sure that constant exprs don't fold in some simple 2; situations 3 4; RUN: llvm-as < %s | llvm-dis | FileCheck %s 5 6; Even give it a datalayout, to tempt folding as much as possible. 7target datalayout = "p:32:32" 8 9@A = global i64 0 10@B = global i64 0 11 12; Don't fold this. @A might really be allocated next to @B, in which case the 13; icmp should return true. It's not valid to *dereference* in @B from a pointer 14; based on @A, but icmp isn't a dereference. 15 16; CHECK: @C = global i1 icmp eq (i64* getelementptr inbounds (i64* @A, i64 1), i64* @B) 17@C = global i1 icmp eq (i64* getelementptr inbounds (i64* @A, i64 1), i64* @B) 18 19; Don't fold this completely away either. In theory this could be simplified 20; to only use a gep on one side of the icmp though. 21 22; CHECK: @D = global i1 icmp eq (i64* getelementptr inbounds (i64* @A, i64 1), i64* getelementptr inbounds (i64* @B, i64 2)) 23@D = global i1 icmp eq (i64* getelementptr inbounds (i64* @A, i64 1), i64* getelementptr inbounds (i64* @B, i64 2)) 24 25; CHECK: @E = global i64 addrspace(1)* addrspacecast (i64* @A to i64 addrspace(1)*) 26@E = global i64 addrspace(1)* addrspacecast(i64* @A to i64 addrspace(1)*) 27