| ; RUN: llvm-as < %s | opt -sccp -adce -simplifycfg | llvm-dis | not grep br | |
| ; No matter how hard you try, sqrt(1.0) is always 1.0. This allows the | |
| ; optimizer to delete this loop. | |
| declare double %sqrt(double) | |
| double %test(uint %param) { | |
| entry: | |
| br label %Loop | |
| Loop: | |
| %I2 = phi uint [ 0, %entry ], [ %I3, %Loop ] | |
| %V = phi double [ 1.0, %entry], [ %V2, %Loop ] | |
| %V2 = call double %sqrt(double %V) | |
| %I3 = add uint %I2, 1 | |
| %tmp.7 = setne uint %I3, %param | |
| br bool %tmp.7, label %Loop, label %Exit | |
| Exit: | |
| ret double %V | |
| } |