1 ; RUN: opt < %s -indvars -S > %t 2 ; RUN: not grep trunc %t 3 ; RUN: grep and %t | count 1 4 5 ; Indvars should do the IV arithmetic in the canonical IV type (i64), 6 ; and only use one truncation. 7 8 define void @foo(i64* %A, i64* %B, i64 %n, i64 %a, i64 %s) nounwind { 9 entry: 10 %t0 = icmp sgt i64 %n, 0 ; <i1> [#uses=1] 11 br i1 %t0, label %bb.preheader, label %return 12 13 bb.preheader: ; preds = %entry 14 br label %bb 15 16 bb: ; preds = %bb, %bb.preheader 17 %i.01 = phi i64 [ %t6, %bb ], [ %a, %bb.preheader ] ; <i64> [#uses=3] 18 %t1 = and i64 %i.01, 255 ; <i64> [#uses=1] 19 %t2 = getelementptr i64* %A, i64 %t1 ; <i64*> [#uses=1] 20 store i64 %i.01, i64* %t2, align 8 21 %t6 = add i64 %i.01, %s ; <i64> [#uses=1] 22 br label %bb 23 24 return: ; preds = %entry 25 ret void 26 } 27
