| ; This test checks to make sure that constant exprs don't fold in some simple |
| ; situations |
| |
| ; RUN: llvm-as < %s | llvm-dis | FileCheck %s |
| ; RUN: verify-uselistorder %s |
| |
| ; Even give it a datalayout, to tempt folding as much as possible. |
| target datalayout = "p:32:32" |
| |
| @A = global i64 0 |
| @B = global i64 0 |
| |
| ; Don't fold this. @A might really be allocated next to @B, in which case the |
| ; icmp should return true. It's not valid to *dereference* in @B from a pointer |
| ; based on @A, but icmp isn't a dereference. |
| |
| ; CHECK: @C = global i1 icmp eq (i64* getelementptr inbounds (i64, i64* @A, i64 1), i64* @B) |
| @C = global i1 icmp eq (i64* getelementptr inbounds (i64, i64* @A, i64 1), i64* @B) |
| |
| ; Don't fold this completely away either. In theory this could be simplified |
| ; to only use a gep on one side of the icmp though. |
| |
| ; CHECK: @D = global i1 icmp eq (i64* getelementptr inbounds (i64, i64* @A, i64 1), i64* getelementptr inbounds (i64, i64* @B, i64 2)) |
| @D = global i1 icmp eq (i64* getelementptr inbounds (i64, i64* @A, i64 1), i64* getelementptr inbounds (i64, i64* @B, i64 2)) |
| |
| ; CHECK: @E = global i64 addrspace(1)* addrspacecast (i64* @A to i64 addrspace(1)*) |
| @E = global i64 addrspace(1)* addrspacecast(i64* @A to i64 addrspace(1)*) |
| |
| ; Don't add an inbounds on @weak.gep, since @weak may be null. |
| ; CHECK: @weak.gep = global i32* getelementptr (i32, i32* @weak, i32 1) |
| @weak.gep = global i32* getelementptr (i32, i32* @weak, i32 1) |
| @weak = extern_weak global i32 |
| |
| ; An object with weak linkage cannot have it's identity determined at compile time. |
| ; CHECK: @F = global i1 icmp eq (i32* @weakany, i32* @glob) |
| @F = global i1 icmp eq (i32* @weakany, i32* @glob) |
| @weakany = weak global i32 0 |
| |
| ; Empty globals might end up anywhere, even on top of another global. |
| ; CHECK: @empty.cmp = global i1 icmp eq ([0 x i8]* @empty.1, [0 x i8]* @empty.2) |
| @empty.1 = external global [0 x i8], align 1 |
| @empty.2 = external global [0 x i8], align 1 |
| @empty.cmp = global i1 icmp eq ([0 x i8]* @empty.1, [0 x i8]* @empty.2) |
| |
| ; Don't add an inbounds on @glob.a3, since it's not inbounds. |
| ; CHECK: @glob.a3 = alias i32, getelementptr (i32, i32* @glob.a2, i32 1) |
| @glob = global i32 0 |
| @glob.a3 = alias i32, getelementptr (i32, i32* @glob.a2, i32 1) |
| @glob.a2 = alias i32, getelementptr (i32, i32* @glob.a1, i32 1) |
| @glob.a1 = alias i32, i32* @glob |