98 lines
2 KiB
Text
98 lines
2 KiB
Text
external printf
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def fact ( )
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local x:
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f1: jumpif lte %rdi, 1 -> f2, f4;
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f2: %rax <- copy 1;
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f3: ret;
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f4: x <- copy %rdi;
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f5: %rdi <- sub %rdi, 1;
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f6: fact();
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f7: %rax <- mul %rax, x;
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f8: ret;
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end
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def fact_tailrec_body ( )
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ft1: jumpif lte %rdi, 1 -> ft2, ft4;
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ft2: %rax <- copy %rsi;
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ft3: ret;
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ft4: %rsi <- mul %rsi, %rdi;
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ft5: %rdi <- sub %rdi, 1;
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ft6: fact_tailrec_body ( ) tail;
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end
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def fact_tailrec ( )
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ftr1: %rsi <- copy 1;
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ftr2: fact_tailrec_body ( ) tail;
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end
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def fact_iter ( )
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y1: %rax <- copy 1;
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y2: jumpif lte %rdi, 1 -> y6, y3;
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y3: %rax <- mul %rax, %rdi;
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y4: %rdi <- sub %rdi, 1;
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y5: jump y2;
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y6: ret;
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end
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def fact_adapt ( )
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o1: switch %rdi -> o11, o11, o13, o15, o17, o19 orelse oE;
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o11: %rax <- copy 1;
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o12: ret;
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o13: %rax <- copy 2;
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o14: ret;
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o15: %rax <- copy 6;
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o16: ret;
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o17: %rax <- copy 24;
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o18: ret;
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o19: fact ( ) tail;
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oE: fact_iter ( ) tail;
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end
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def test_fact_impl ( )
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local saved_r12:
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tf0: saved_r12 <- copy %r12;
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tf1: %rax <- copy %rdi;
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tf2: %rdi <- copy %rsi;
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tf3: %rbx <- copy %rdx;
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tf4: %r12 <- copy %rsi;
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tf5: call %rax ();
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tf6: %rdi <- copy "%s(%d) = %d\n";
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tf7: %rsi <- copy %rbx;
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tf8: %rdx <- copy %r12;
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tf9: %rcx <- copy %rax;
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tf10: %rax <- copy 0;
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tf11: printf ();
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tf12: %r12 <- copy saved_r12;
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tf13: ret;
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end
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globals ( )
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local saved_r12, saved_r13:
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xx: saved_r12 <- copy %r12;
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xy: saved_r13 <- copy %r13;
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x0: %r12 <- copy 30;
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x1: %r13 <- copy 1;
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x2: jumpif lte %r13, %r12 -> x3, xEND;
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x3: %rdi <- copy &fact;
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x4: %rsi <- copy %r13;
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x5: %rdx <- copy "fact";
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x6: test_fact_impl ( );
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x7: %rdi <- copy &fact_iter;
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x8: %rsi <- copy %r13;
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x9: %rdx <- copy "fact_iter";
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x10: test_fact_impl ( );
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x11: %rdi <- copy &fact_adapt;
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x12: %rsi <- copy %r13;
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x13: %rdx <- copy "fact_adapt";
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x14: test_fact_impl ( );
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x15: %rdi <- copy &fact_tailrec;
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x16: %rsi <- copy %r13;
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x17: %rdx <- copy "fact_tailrec";
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x18: test_fact_impl ( );
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x19: %r13 <- add %r13, 1;
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x20: jump x2;
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xEND: %r12 <- copy saved_r12;
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xEND0: %r13 <- copy saved_r13;
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xEND1: exit;
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end
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