| ; If the result of an instruction is only used outside of the loop, sink |
| ; the instruction to the exit blocks instead of executing it on every |
| ; iteration of the loop. |
| ; |
| ; RUN: llvm-as < %s | opt -licm | llvm-dis | %prcontext mul 1 | grep Out: |
| |
| define i32 @test(i32 %N) { |
| Entry: |
| br label %Loop |
| Loop: ; preds = %Loop, %Entry |
| %N_addr.0.pn = phi i32 [ %dec, %Loop ], [ %N, %Entry ] ; <i32> [#uses=3] |
| %tmp.6 = mul i32 %N, %N_addr.0.pn ; <i32> [#uses=1] |
| %tmp.7 = sub i32 %tmp.6, %N ; <i32> [#uses=1] |
| %dec = add i32 %N_addr.0.pn, -1 ; <i32> [#uses=1] |
| %tmp.1 = icmp ne i32 %N_addr.0.pn, 1 ; <i1> [#uses=1] |
| br i1 %tmp.1, label %Loop, label %Out |
| Out: ; preds = %Loop |
| ret i32 %tmp.7 |
| } |
| |