1 ; RUN: opt < %s -indvars -S | FileCheck %s 2 3 ; Indvars should do the IV arithmetic in the canonical IV type (i64), 4 ; and only use one truncation. 5 6 define void @foo(i64* %A, i64* %B, i64 %n, i64 %a, i64 %s) nounwind { 7 ; CHECK-LABEL: @foo( 8 ; CHECK-NOT: trunc 9 ; CHECK: and 10 ; CHECK-NOT: and 11 entry: 12 %t0 = icmp sgt i64 %n, 0 ; <i1> [#uses=1] 13 br i1 %t0, label %bb.preheader, label %return 14 15 bb.preheader: ; preds = %entry 16 br label %bb 17 18 bb: ; preds = %bb, %bb.preheader 19 %i.01 = phi i64 [ %t6, %bb ], [ %a, %bb.preheader ] ; <i64> [#uses=3] 20 %t1 = and i64 %i.01, 255 ; <i64> [#uses=1] 21 %t2 = getelementptr i64, i64* %A, i64 %t1 ; <i64*> [#uses=1] 22 store i64 %i.01, i64* %t2, align 8 23 %t6 = add i64 %i.01, %s ; <i64> [#uses=1] 24 br label %bb 25 26 return: ; preds = %entry 27 ret void 28 } 29
