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