1 ; RUN: llc < %s -march=x86-64 | grep cvtsi2sd 2 3 ; LSR previously eliminated the sitofp by introducing an induction 4 ; variable which stepped by a bogus ((double)UINT32_C(-1)). It's theoretically 5 ; possible to eliminate the sitofp using a proper -1.0 step though; this 6 ; test should be changed if that is done. 7 8 define void @foo(i32 %N) nounwind { 9 entry: 10 %0 = icmp slt i32 %N, 0 ; <i1> [#uses=1] 11 br i1 %0, label %bb, label %return 12 13 bb: ; preds = %bb, %entry 14 %i.03 = phi i32 [ 0, %entry ], [ %2, %bb ] ; <i32> [#uses=2] 15 %1 = sitofp i32 %i.03 to double ; <double> [#uses=1] 16 tail call void @bar(double %1) nounwind 17 %2 = add nsw i32 %i.03, -1 ; <i32> [#uses=2] 18 %exitcond = icmp eq i32 %2, %N ; <i1> [#uses=1] 19 br i1 %exitcond, label %return, label %bb 20 21 return: ; preds = %bb, %entry 22 ret void 23 } 24 25 declare void @bar(double) 26
