Tweek gc countdown variable

This pushes performance of recursion04 quite a bit, at fib 30: from 3.25s down to 1.12s.
rootmos · Jul 23, 2017 · 920c5d4 · 920c5d4
1 parent 8234fb9
commit 920c5d4
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Showing 3 changed files with 3 additions and 3 deletions.
diff --git a/examples/recursion04.expected b/examples/recursion04.expected
@@ -1,3 +1,3 @@
 13
 21
-196418
+832040
diff --git a/examples/recursion04.silly-ml b/examples/recursion04.silly-ml
@@ -5,4 +5,4 @@ let rec fib n = match n with
 
 print_int (fib 7); print_newline ();;
 print_int (fib 8); print_newline ();;
-print_int (fib 27); print_newline ();;
+print_int (fib 30); print_newline ();;
diff --git a/src/backend.ml b/src/backend.ml
@@ -465,7 +465,7 @@ let gc = {
     mov (label gc_countdown_label) (reg rax) >>
     test (reg rax) (reg rax) >>
     jnz (label "__gc_done") >>
-    mov (const 20) (label gc_countdown_label) >>
+    mov (const 1000) (label gc_countdown_label) >>
 
     define (reg rdi) >>= fun arg ->
     define (reg rsi) >>= fun closure ->