1 ; RUN: opt < %s -indvars -S > %t
2 ; RUN: not grep trunc %t
3 ; RUN: grep and %t | count 1
5 ; Indvars should do the IV arithmetic in the canonical IV type (i64),
6 ; and only use one truncation.
8 define void @foo(i64* %A, i64* %B, i64 %n, i64 %a, i64 %s) nounwind {
10 %t0 = icmp sgt i64 %n, 0 ; <i1> [#uses=1]
11 br i1 %t0, label %bb.preheader, label %return
13 bb.preheader: ; preds = %entry
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]
24 return: ; preds = %entry