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132 lines
3.5 KiB
132 lines
3.5 KiB
public class LongArithTests { |
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private static final long IIMM12_0 = 0x1; // first imm value |
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private static final long IIMM12_1 = 0xfff; // last 12bit imm value |
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private static final long IIMM12_2 = 0x1001; // Should not encode as imm |
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private static final long IIMM24_3 = 0x1000; // first 12 bit shifted imm |
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private static final long IIMM24_4 = 0xfff000; // Last 12 bit shifted imm |
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private static final long IIMM24_5 = 0x1001000; // Should not encode as imm |
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private static long test_neg(long a) { |
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return -a; |
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} |
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private static long test_add(long a, long b) { |
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return a + b; |
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} |
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private static long test_addc0(long a) { |
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return a + IIMM12_0; |
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} |
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private static long test_addc1(long a) { |
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return a + IIMM12_1; |
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} |
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private static long test_addc2(long a) { |
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return a + IIMM12_2; |
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} |
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private static long test_addc3(long a) { |
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return a + IIMM24_3; |
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} |
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private static long test_addc4(long a) { |
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return a + IIMM24_4; |
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} |
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private static long test_addc5(long a) { |
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return a + IIMM24_5; |
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} |
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private static long test_sub(long a, long b) { |
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return a - b; |
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} |
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private static long test_subc1(long a) { |
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return a - 11; |
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} |
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private static long test_mulc1(long a) { |
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// Generates shl. |
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return a * 8; |
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} |
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private static long test_mulc2(long a) { |
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// Generates shl followed by add. |
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return a * 9; |
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} |
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private static long test_mulc3(long a) { |
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// Generates shl followed by sub. |
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return a * 7; |
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} |
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private static long test_mulc4(long a) { |
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// Generates normal mul. |
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return a * 10; |
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} |
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private static long test_mul(long a, long b) { |
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// Generates normal mul. |
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return a * b; |
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} |
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private static long test_div(long a, long b) { |
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return a / b; |
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} |
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private static long test_rem(long a, long b) { |
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return a % b; |
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} |
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private static void assertThat(boolean assertion) { |
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if (! assertion) { |
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throw new AssertionError(); |
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} |
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} |
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public static void main(String[] args) { |
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assertThat(test_neg(10) == -10); |
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assertThat(test_add(3, 2) == 5); |
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assertThat(test_add(Long.MAX_VALUE, 1) == Long.MIN_VALUE); |
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assertThat(test_addc0(3) == 4); |
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assertThat(test_addc1(3) == 0x1002); |
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assertThat(test_addc2(3) == 0x1004); |
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assertThat(test_addc3(3) == 0x1003); |
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assertThat(test_addc4(3) == 0xfff003); |
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assertThat(test_addc5(3) == 0x1001003); |
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assertThat(test_sub(40, 13) == 27); |
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assertThat(test_sub(Long.MIN_VALUE, 1) == Long.MAX_VALUE); |
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assertThat(test_subc1(40) == 29); |
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assertThat(test_mulc1(5) == 40); |
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assertThat(test_mulc2(5) == 45); |
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assertThat(test_mulc3(5) == 35); |
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assertThat(test_mulc4(5) == 50); |
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assertThat(test_mul(5, 200) == 1000); |
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assertThat(test_div(30, 3) == 10); |
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assertThat(test_div(29, 3) == 9); |
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assertThat(test_div(Long.MIN_VALUE, -1) == Long.MIN_VALUE); |
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try { |
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test_div(30, 0); |
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throw new AssertionError(); |
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} catch (ArithmeticException ex) { |
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// Pass. |
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} |
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assertThat(test_rem(30, 3) == 0); |
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assertThat(test_rem(29, 3) == 2); |
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assertThat(test_rem(Long.MIN_VALUE, -1) == 0); |
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try { |
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test_rem(30, 0); |
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throw new AssertionError(); |
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} catch (ArithmeticException ex) { |
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// Pass. |
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} |
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} |
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}
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