| ; Here we have a case where there are two loops and LICM is hoisting an |
| ; instruction from one loop into the other loop! This is obviously bad and |
| ; happens because preheader insertion doesn't insert a preheader for this |
| ; case... bad. |
| |
| ; RUN: llvm-as < %s | opt -licm -adce -simplifycfg | llvm-dis | not grep 'br ' |
| |
| int %main(int %argc) { |
| br label %bb5 |
| |
| bb5: ; preds = %bb5, %0 |
| %I = phi int [0, %0], [%I2, %bb5] |
| %I2 = add int %I, 1 |
| %c = seteq int %I2, 10 |
| br bool %c, label %bb5, label %bb8 |
| |
| bb8: ; preds = %bb8, %bb5 |
| %cann-indvar = phi uint [ 0, %bb8 ], [ 0, %bb5 ] |
| %X = add int %argc, %argc ; Loop invariant |
| br bool false, label %bb8, label %bb10 |
| |
| bb10: ; preds = %bb8 |
| ret int %X |
| } |
| |
