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Tiny opt changes to avoid 4K aliasing and loop bound recalc.

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Geoff Langdale
2018-05-07 20:45:51 +10:00
parent 8733686fc0
commit 1df475a5ea
1 changed files with 3 additions and 2 deletions
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main.cpp
+3 -2
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@@ -379,7 +379,7 @@ const u32 char_control[256] = {
CDF,CDF,CDF,CDF, CDF,CDF,CDF,CDF, CDF,CDF,CDF,CDF, CDF,CDF,CDF,CDF
};
const size_t MAX_TAPE_ENTRIES = 1024*1024;
const size_t MAX_TAPE_ENTRIES = 127*1024;
const size_t MAX_TAPE = MAX_DEPTH * MAX_TAPE_ENTRIES;
u32 tape[MAX_TAPE];
u32 tape_locs[MAX_DEPTH];
@@ -576,7 +576,8 @@ never_inline bool shovel_machine(UNUSED const u8 * buf, UNUSED size_t len, UNUSE
// walk over each tape
for (u32 i = 0; i < MAX_DEPTH; i++) {
u32 start_loc = i*MAX_TAPE_ENTRIES;
for (u32 j = start_loc; j < tape_locs[i]; j++) {
u32 end_loc = tape_locs[i];
for (u32 j = start_loc; j < end_loc; j++) {
count_tapes++;
switch (tape[j]>>24) {
case '{': case '[': {