1 ; RUN: opt -S -loop-rotate < %s | FileCheck %s 2 3 @e = global i32 10 4 5 declare void @f1(i32) convergent 6 declare void @f2(i32) 7 8 ; The call to f1 in the loop header shouldn't be duplicated (meaning, loop 9 ; rotation shouldn't occur), because f1 is convergent. 10 11 ; CHECK: call void @f1 12 ; CHECK-NOT: call void @f1 13 14 define void @test(i32 %x) { 15 entry: 16 br label %loop 17 18 loop: 19 %n.phi = phi i32 [ %n, %loop.fin ], [ 0, %entry ] 20 call void @f1(i32 %n.phi) 21 %cond = icmp eq i32 %n.phi, %x 22 br i1 %cond, label %exit, label %loop.fin 23 24 loop.fin: 25 %n = add i32 %n.phi, 1 26 call void @f2(i32 %n) 27 br label %loop 28 29 exit: 30 ret void 31 } 32
