| ; RUN: opt -scalar-evolution-max-arith-depth=0 -scalar-evolution-max-cast-depth=0 -analyze -enable-new-pm=0 -scalar-evolution < %s | FileCheck %s |
| ; RUN: opt -scalar-evolution-max-arith-depth=0 -scalar-evolution-max-cast-depth=0 -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s |
| |
| ; Check that depth set to 0 prevents getAddExpr and getMulExpr from making |
| ; transformations in SCEV. We expect the result to be very straightforward. |
| |
| define void @test_add(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f) { |
| ; CHECK-LABEL: @test_add |
| ; CHECK: %s2 = add i32 %s1, %p3 |
| ; CHECK-NEXT: --> (%a + %a + %b + %b + %c + %c + %d + %d + %e + %e + %f + %f) |
| %tmp0 = add i32 %a, %b |
| %tmp1 = add i32 %b, %c |
| %tmp2 = add i32 %c, %d |
| %tmp3 = add i32 %d, %e |
| %tmp4 = add i32 %e, %f |
| %tmp5 = add i32 %f, %a |
| |
| %p1 = add i32 %tmp0, %tmp3 |
| %p2 = add i32 %tmp1, %tmp4 |
| %p3 = add i32 %tmp2, %tmp5 |
| |
| %s1 = add i32 %p1, %p2 |
| %s2 = add i32 %s1, %p3 |
| ret void |
| } |
| |
| ; Constant factors still get folded together. |
| define void @test_mul_consts(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f) { |
| ; CHECK-LABEL: @test_mul_consts |
| ; CHECK: %s2 = mul i32 %s1, %p3 |
| ; CHECK-NEXT: --> (5040 * %a * %b * %c * %d * %e * %f) |
| %tmp0 = mul i32 %a, 2 |
| %tmp1 = mul i32 %b, 3 |
| %tmp2 = mul i32 %c, 4 |
| %tmp3 = mul i32 %d, 5 |
| %tmp4 = mul i32 %e, 6 |
| %tmp5 = mul i32 %f, 7 |
| |
| %p1 = mul i32 %tmp0, %tmp3 |
| %p2 = mul i32 %tmp1, %tmp4 |
| %p3 = mul i32 %tmp2, %tmp5 |
| |
| %s1 = mul i32 %p1, %p2 |
| %s2 = mul i32 %s1, %p3 |
| ret void |
| } |
| |
| ; The outer *5 gets distributed because it is at depth=0, but the resulting |
| ; nested multiply doesn't get flattened, because it is at depth=1. |
| define void @test_mul(i32 %a, i32 %b) { |
| ; CHECK-LABEL: @test_mul |
| ; CHECK: %tmp2 = mul i32 %tmp1, 5 |
| ; CHECK-NEXT: --> (20 + (5 * (3 * %a))) |
| %tmp0 = mul i32 %a, 3 |
| %tmp1 = add i32 %tmp0, 4 |
| %tmp2 = mul i32 %tmp1, 5 |
| ret void |
| } |
| |
| define void @test_sext(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f) { |
| ; CHECK-LABEL: @test_sext |
| ; CHECK: %se2 = sext i64 %iv2.inc to i128 |
| ; CHECK-NEXT: --> {(1 + (sext i64 {(sext i32 (1 + %a) to i64),+,1}<nsw><%loop> to i128))<nsw>,+,1}<nsw><%loop2> |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i32 [ %a, %entry ], [ %iv.inc, %loop ] |
| %iv.inc = add nsw i32 %iv, 1 |
| %cond = icmp sle i32 %iv.inc, 50 |
| br i1 %cond, label %loop, label %between |
| |
| between: |
| %se = sext i32 %iv.inc to i64 |
| br label %loop2 |
| |
| loop2: |
| %iv2 = phi i64 [ %se, %between ], [ %iv2.inc, %loop2 ] |
| %iv2.inc = add nsw i64 %iv2, 1 |
| %cond2 = icmp sle i64 %iv2.inc, 50 |
| br i1 %cond2, label %loop2, label %exit |
| |
| exit: |
| %se2 = sext i64 %iv2.inc to i128 |
| ret void |
| } |
| |
| define void @test_zext(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f) { |
| ; CHECK-LABEL: @test_zext |
| ; CHECK: %ze2 = zext i64 %iv2.inc to i128 |
| ; CHECK-NEXT: --> {(1 + (zext i64 {7,+,1}<nuw><nsw><%loop> to i128))<nuw><nsw>,+,1}<nuw><%loop2> |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i32 [ 6, %entry ], [ %iv.inc, %loop ] |
| %iv.inc = add nsw i32 %iv, 1 |
| %cond = icmp sle i32 %iv.inc, 50 |
| br i1 %cond, label %loop, label %between |
| |
| between: |
| %ze = zext i32 %iv.inc to i64 |
| br label %loop2 |
| |
| loop2: |
| %iv2 = phi i64 [ %ze, %between ], [ %iv2.inc, %loop2 ] |
| %iv2.inc = add nuw i64 %iv2, 1 |
| %cond2 = icmp sle i64 %iv2.inc, 50 |
| br i1 %cond2, label %loop2, label %exit |
| |
| exit: |
| %ze2 = zext i64 %iv2.inc to i128 |
| ret void |
| } |
| |
| define void @test_trunc(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f) { |
| ; CHECK-LABEL: @test_trunc |
| ; CHECK: %trunc2 = trunc i64 %iv2.inc to i32 |
| ; CHECK-NEXT: --> {(trunc i64 (1 + {7,+,1}<%loop>) to i32),+,1}<%loop2> |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i128 [ 6, %entry ], [ %iv.inc, %loop ] |
| %iv.inc = add nsw i128 %iv, 1 |
| %cond = icmp sle i128 %iv.inc, 50 |
| br i1 %cond, label %loop, label %between |
| |
| between: |
| %trunc = trunc i128 %iv.inc to i64 |
| br label %loop2 |
| |
| loop2: |
| %iv2 = phi i64 [ %trunc, %between ], [ %iv2.inc, %loop2 ] |
| %iv2.inc = add nuw i64 %iv2, 1 |
| %cond2 = icmp sle i64 %iv2.inc, 50 |
| br i1 %cond2, label %loop2, label %exit |
| |
| exit: |
| %trunc2 = trunc i64 %iv2.inc to i32 |
| ret void |
| } |
| |
| ; Check that all constant SCEVs are folded regardless depth limit. |
| define void @test_mul_const(i32 %a) { |
| ; CHECK-LABEL: @test_mul_const |
| ; CHECK: %test3 = mul i32 %test2, 3 |
| ; CHECK-NEXT: --> (9 + (3 * (3 * %a))) |
| ; CHECK: %test4 = mul i32 3, 3 |
| ; CHECK-NEXT: --> 9 U: [9,10) S: [9,10) |
| %test = mul i32 3, %a |
| %test2 = add i32 3, %test |
| %test3 = mul i32 %test2, 3 |
| %test4 = mul i32 3, 3 |
| ret void |
| } |