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update unique_mirror search algorithm for Switch Blocks

This commit is contained in:
tangxifan 2019-05-25 19:54:15 -06:00
parent d3eae80e64
commit 2eab0b1c1c
1 changed files with 13 additions and 29 deletions
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42
vpr7_x2p/vpr/SRC/fpga_x2p/base/fpga_x2p_unique_routing.c
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@ -294,42 +294,26 @@ boolean is_two_switch_blocks_mirror(t_sb* src, t_sb* des) {
* If the 1st SB is already a mirror to another, we will trace back to the upstream base and update the 2nd SB
*/
void assign_mirror_switch_blocks() {
/* A vector of coordinators of mirrors */
std::vector<t_sb*> mirror;
/* Walkthrough each column, and find mirrors */
for (int ix = 0; ix < (nx + 1); ++ix) {
for (int iy = 0; iy < (ny + 1); ++iy) {
for (int jy = iy; jy < (ny + 1); ++jy) {
/* bypass the same one */
if (iy == jy) {
continue;
}
bool is_unique_mirror = true;
for (size_t imirror = 0; imirror < mirror.size(); ++imirror) {
/* Do one-to-one comparison */
if (FALSE == is_two_switch_blocks_mirror(&(sb_info[ix][iy]), &(sb_info[ix][jy]))) {
/* Nothing to do if the two switch blocks are not equivalent */
continue;
if (TRUE == is_two_switch_blocks_mirror(mirror[imirror], &(sb_info[ix][iy]))) {
/* Find two equivalent switch blocks */
is_unique_mirror = false;
/* configure the mirror of the second switch block */
assign_switch_block_mirror(mirror[imirror], &(sb_info[ix][iy]));
break;
}
/* configure the mirror of the second switch block */
assign_switch_block_mirror(&(sb_info[ix][iy]), &(sb_info[ix][jy]));
}
}
}
/* Now mirror switch blocks in each column has been annotated */
/* Walkthrough each row, and find mirrors */
for (int iy = 0; iy < (ny + 1); ++iy) {
for (int ix = 0; ix < (nx + 1); ++ix) {
for (int jx = ix; jx < (nx + 1); ++jx) {
/* bypass the same one */
if (ix == jx) {
continue;
}
/* Do one-to-one comparison */
if (FALSE == is_two_switch_blocks_mirror(&(sb_info[ix][iy]), &(sb_info[jx][iy]))) {
/* Nothing to do if the two switch blocks are not equivalent */
continue;
}
/* configure the mirror of the second switch block */
assign_switch_block_mirror(&(sb_info[ix][iy]), &(sb_info[jx][iy]));
if (true == is_unique_mirror) {
/* add to unique mirror list */
mirror.push_back(&(sb_info[ix][iy]));
}
}
}