| Dan Gohman | 6a61fcc | 2013-01-31 00:01:45 +0000 | [diff] [blame] | 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. |
| 7 | target 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)) |
| Matt Arsenault | b03bd4d | 2013-11-15 01:34:59 +0000 | [diff] [blame^] | 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)*) |