| ; RUN: opt < %s -indvars -S | FileCheck %s | |
| ; 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 { | |
| ; CHECK-LABEL: @foo( | |
| ; CHECK-NOT: trunc | |
| ; CHECK: and | |
| ; CHECK-NOT: and | |
| 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 | |
| } |