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fix JIT handling of `unsafe-{fl,f64}vector-set!'

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so that they aren't slower than `{fl,f64}vector-set!'
This commit is contained in:
Matthew Flatt 2010-10-01 07:07:03 -06:00
parent 60d216290d
commit 7f28410353
1 changed files with 35 additions and 37 deletions
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72
src/racket/src/jit.c
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@ -8639,46 +8639,44 @@ static int generate_inlined_nary(mz_jit_state *jitter, Scheme_App_Rec *app, int
} else if (IS_NAMED_PRIM(rator, "unsafe-f64vector-set!")
|| IS_NAMED_PRIM(rator, "unsafe-flvector-set!")) {
int is_f64;
is_f64 = IS_NAMED_PRIM(rator, "unsafe-f64vector-set!");
if (can_unbox_inline(app->args[3], 5, JIT_FPR_NUM-1, 1)) {
int got_two;
if (is_constant_and_avoids_r1(app->args[1])
&& is_constant_and_avoids_r1(app->args[2])) {
mz_runstack_skipped(jitter, 3);
got_two = 0;
} else {
got_two = 1;
mz_runstack_skipped(jitter, 1);
generate_app(app, NULL, 2, jitter, 0, 0, 2);
}
jitter->unbox++;
generate(app->args[3], jitter, 0, 0, 0, JIT_R0, NULL); /* to FP reg */
CHECK_LIMIT();
--jitter->unbox;
--jitter->unbox_depth;
if (!got_two) {
generate(app->args[2], jitter, 0, 0, 0, JIT_R1, NULL);
CHECK_LIMIT();
generate(app->args[1], jitter, 0, 0, 0, JIT_R0, NULL);
mz_runstack_unskipped(jitter, 3);
} else {
mz_rs_ldr(JIT_R0);
mz_rs_ldxi(JIT_R1, 1);
mz_rs_inc(2); /* no sync */
mz_runstack_popped(jitter, 2);
mz_runstack_unskipped(jitter, 1);
}
} else {
generate_app(app, NULL, 3, jitter, 0, 0, 2);
CHECK_LIMIT();
int can_direct, got_two;
mz_rs_ldxi(JIT_R0, 2);
jit_ldxi_d_fppush(JIT_FPR0, JIT_R0, &((Scheme_Double *)0x0)->double_val);
is_f64 = IS_NAMED_PRIM(rator, "unsafe-f64vector-set!");
if (is_constant_and_avoids_r1(app->args[1])
&& is_constant_and_avoids_r1(app->args[2])) {
mz_runstack_skipped(jitter, 3);
got_two = 0;
} else {
got_two = 1;
mz_runstack_skipped(jitter, 1);
generate_app(app, NULL, 2, jitter, 0, 0, 2);
}
if (can_unbox_inline(app->args[3], 5, JIT_FPR_NUM-1, 1))
can_direct = 2;
else if (can_unbox_directly(app->args[3]))
can_direct = 1;
else
can_direct = 0;
jitter->unbox++;
generate_unboxed(app->args[3], jitter, can_direct, 1);
--jitter->unbox;
--jitter->unbox_depth;
CHECK_LIMIT();
if (!got_two) {
generate(app->args[2], jitter, 0, 0, 0, JIT_R1, NULL);
CHECK_LIMIT();
generate(app->args[1], jitter, 0, 0, 0, JIT_R0, NULL);
mz_runstack_unskipped(jitter, 3);
} else {
mz_rs_ldr(JIT_R0);
mz_rs_ldxi(JIT_R1, 1);
mz_rs_inc(3); /* no sync */
mz_runstack_popped(jitter, 3);
mz_rs_inc(2); /* no sync */
mz_runstack_popped(jitter, 2);
mz_runstack_unskipped(jitter, 1);
}
CHECK_LIMIT();