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- ; RUN: opt < %s -indvars -S > %t
- ; RUN: not grep trunc %t
- ; RUN: grep and %t | count 1
- ; Indvars should do the IV arithmetic in the canonical IV type (i64),
- ; and only use one truncation.
- define void @foo(i64* %A, i64* %B, i64 %n, i64 %a, i64 %s) nounwind {
- entry:
- %t0 = icmp sgt i64 %n, 0 ; <i1> [#uses=1]
- br i1 %t0, label %bb.preheader, label %return
- bb.preheader: ; preds = %entry
- br label %bb
- bb: ; preds = %bb, %bb.preheader
- %i.01 = phi i64 [ %t6, %bb ], [ %a, %bb.preheader ] ; <i64> [#uses=3]
- %t1 = and i64 %i.01, 255 ; <i64> [#uses=1]
- %t2 = getelementptr i64, i64* %A, i64 %t1 ; <i64*> [#uses=1]
- store i64 %i.01, i64* %t2, align 8
- %t6 = add i64 %i.01, %s ; <i64> [#uses=1]
- br label %bb
- return: ; preds = %entry
- ret void
- }
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