| ; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution | FileCheck %s |
| ; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s |
| |
| ; CHECK: %tmp9 = shl i64 %tmp8, 33 |
| ; CHECK-NEXT: --> {{.*}} Exits: (-8589934592 + (8589934592 * (zext i32 %arg2 to i64))) |
| ; CHECK: %tmp10 = ashr exact i64 %tmp9, 32 |
| ; CHECK-NEXT: --> {{.*}} Exits: (sext i32 (-2 + (2 * %arg2)) to i64) |
| ; CHECK: %tmp11 = getelementptr inbounds i32, i32* %arg, i64 %tmp10 |
| ; CHECK-NEXT: --> {{.*}} Exits: ((4 * (sext i32 (-2 + (2 * %arg2)) to i64))<nsw> + %arg) |
| ; CHECK: %tmp14 = or i64 %tmp10, 1 |
| ; CHECK-NEXT: --> {{.*}} Exits: (1 + (sext i32 (-2 + (2 * %arg2)) to i64))<nuw><nsw> |
| ; CHECK: %tmp15 = getelementptr inbounds i32, i32* %arg, i64 %tmp14 |
| ; CHECK-NEXT: --> {{.*}} Exits: (4 + (4 * (sext i32 (-2 + (2 * %arg2)) to i64))<nsw> + %arg) |
| ; CHECK:Loop %bb7: backedge-taken count is (-1 + (zext i32 %arg2 to i64))<nsw> |
| ; CHECK-NEXT:Loop %bb7: max backedge-taken count is 4294967294 |
| ; CHECK-NEXT:Loop %bb7: Predicated backedge-taken count is (-1 + (zext i32 %arg2 to i64))<nsw> |
| |
| define void @foo(i32* nocapture %arg, i32 %arg1, i32 %arg2) { |
| bb: |
| %tmp = icmp sgt i32 %arg2, 0 |
| br i1 %tmp, label %bb3, label %bb6 |
| |
| bb3: ; preds = %bb |
| %tmp4 = zext i32 %arg2 to i64 |
| br label %bb7 |
| |
| bb5: ; preds = %bb7 |
| br label %bb6 |
| |
| bb6: ; preds = %bb5, %bb |
| ret void |
| |
| bb7: ; preds = %bb7, %bb3 |
| %tmp8 = phi i64 [ %tmp18, %bb7 ], [ 0, %bb3 ] |
| %tmp9 = shl i64 %tmp8, 33 |
| %tmp10 = ashr exact i64 %tmp9, 32 |
| %tmp11 = getelementptr inbounds i32, i32* %arg, i64 %tmp10 |
| %tmp12 = load i32, i32* %tmp11, align 4 |
| %tmp13 = sub nsw i32 %tmp12, %arg1 |
| store i32 %tmp13, i32* %tmp11, align 4 |
| %tmp14 = or i64 %tmp10, 1 |
| %tmp15 = getelementptr inbounds i32, i32* %arg, i64 %tmp14 |
| %tmp16 = load i32, i32* %tmp15, align 4 |
| %tmp17 = mul nsw i32 %tmp16, %arg1 |
| store i32 %tmp17, i32* %tmp15, align 4 |
| %tmp18 = add nuw nsw i64 %tmp8, 1 |
| %tmp19 = icmp eq i64 %tmp18, %tmp4 |
| br i1 %tmp19, label %bb5, label %bb7 |
| } |
| |
| ; CHECK: %t10 = ashr exact i128 %t9, 1 |
| ; CHECK-NEXT: --> {{.*}} Exits: (sext i127 (-633825300114114700748351602688 + (633825300114114700748351602688 * (zext i32 %arg5 to i127))) to i128) |
| ; CHECK: %t14 = or i128 %t10, 1 |
| ; CHECK-NEXT: --> {{.*}} Exits: (1 + (sext i127 (-633825300114114700748351602688 + (633825300114114700748351602688 * (zext i32 %arg5 to i127))) to i128))<nuw><nsw> |
| ; CHECK: Loop %bb7: backedge-taken count is (-1 + (zext i32 %arg5 to i128))<nsw> |
| ; CHECK-NEXT: Loop %bb7: max backedge-taken count is 4294967294 |
| ; CHECK-NEXT: Loop %bb7: Predicated backedge-taken count is (-1 + (zext i32 %arg5 to i128))<nsw> |
| |
| define void @goo(i32* nocapture %arg3, i32 %arg4, i32 %arg5) { |
| bb: |
| %t = icmp sgt i32 %arg5, 0 |
| br i1 %t, label %bb3, label %bb6 |
| |
| bb3: ; preds = %bb |
| %t4 = zext i32 %arg5 to i128 |
| br label %bb7 |
| |
| bb5: ; preds = %bb7 |
| br label %bb6 |
| |
| bb6: ; preds = %bb5, %bb |
| ret void |
| |
| bb7: ; preds = %bb7, %bb3 |
| %t8 = phi i128 [ %t18, %bb7 ], [ 0, %bb3 ] |
| %t9 = shl i128 %t8, 100 |
| %t10 = ashr exact i128 %t9, 1 |
| %t11 = getelementptr inbounds i32, i32* %arg3, i128 %t10 |
| %t12 = load i32, i32* %t11, align 4 |
| %t13 = sub nsw i32 %t12, %arg4 |
| store i32 %t13, i32* %t11, align 4 |
| %t14 = or i128 %t10, 1 |
| %t15 = getelementptr inbounds i32, i32* %arg3, i128 %t14 |
| %t16 = load i32, i32* %t15, align 4 |
| %t17 = mul nsw i32 %t16, %arg4 |
| store i32 %t17, i32* %t15, align 4 |
| %t18 = add nuw nsw i128 %t8, 1 |
| %t19 = icmp eq i128 %t18, %t4 |
| br i1 %t19, label %bb5, label %bb7 |
| } |