| ; This testcase tests for a problem where LICM hoists |
| ; potentially trapping instructions when they are not guaranteed to execute. |
| ; |
| ; RUN: llvm-as < %s | opt -licm | llvm-dis | %prcontext "IfUnEqual" 2 | grep div |
| |
| %X = global int 0 |
| declare void %foo() |
| |
| int %test(bool %c) { |
| %A = load int *%X |
| br label %Loop |
| Loop: |
| call void %foo() |
| br bool %c, label %LoopTail, label %IfUnEqual |
| |
| IfUnEqual: |
| %B1 = div int 4, %A ;; Should not hoist this div! |
| br label %LoopTail |
| |
| LoopTail: |
| %B = phi int [ 0, %Loop ], [ %B1, %IfUnEqual] |
| br bool %c, label %Loop, label %Out |
| |
| Out: |
| %C = sub int %A, %B |
| ret int %C |
| } |
