From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Tue, 29 Jun 2021 10:46:32 +0000 (+0100)
Subject: add remap.py
X-Git-Tag: DRAFT_SVP64_0_1~697
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d8442e6e2f32bac7391b44d7f29c9771bf69625a;p=libreriscv.git

add remap.py
---

diff --git a/openpower/sv/remap.mdwn b/openpower/sv/remap.mdwn
index a63e3c6f2..815c342b3 100644
--- a/openpower/sv/remap.mdwn
+++ b/openpower/sv/remap.mdwn
@@ -27,49 +27,9 @@ which have the same format.
 The algorithm below shows how REMAP works more clearly, and may be
 executed as a python program:
 
-[[!inline quick="yes" raw="yes" pages="/openpower/sv/remap.py" ]]
-
-    xdim = 3 # changeme
-    ydim = 4
-    zdim = 1
-
-    lims = [xdim, ydim, zdim]
-    idxs = [0,0,0] # starting indices
-    order = [0,1,2] # experiment with different permutations, here
-    offset = 2     # experiment with different offset, here
-    VL = xdim * ydim * zdim # multiply (or add) to this to get "cycling"
-    applydim = 0
-    invxyz = [0,0,0]
-
-    # run for offset iterations before actually starting
-    for idx in range(offset):
-        for i in range(3):
-            idxs[order[i]] = idxs[order[i]] + 1
-            if (idxs[order[i]] != lims[order[i]]):
-                break
-            idxs[order[i]] = 0
-
-    break_count = 0
-
-    for idx in range(VL):
-        ix = [0] * 3
-        for i in range(3):
-            if i >= applydim:
-                ix[i] = idxs[i]
-            if invxyz[i]:
-                ix[i] = lims[i] - 1 - ix[i]
-        new_idx = ix[0] + ix[1] * xdim + ix[2] * xdim * ydim
-        print new_idx,
-        break_count += 1
-        if break_count == lims[order[0]]:
-            print
-            break_count = 0
-        for i in range(3):
-            idxs[order[i]] = idxs[order[i]] + 1
-            if (idxs[order[i]] != lims[order[i]]):
-                break
-            idxs[order[i]] = 0
-
+```
+[[!inline quick="yes" raw="yes" pages="openpower/sv/remap.py" ]]
+```
 
 Each element index from the for-loop `0..VL-1`
 is run through the above algorithm to work out the **actual** element
diff --git a/openpower/sv/remap.py b/openpower/sv/remap.py
new file mode 100644
index 000000000..c14b1102a
--- /dev/null
+++ b/openpower/sv/remap.py
@@ -0,0 +1,39 @@
+xdim = 3
+ydim = 2
+zdim = 1
+
+lims = [xdim, ydim, zdim]
+idxs = [0,0,0] # starting indices
+order = [0,1,2] # experiment with different permutations, here
+offs = 2     # experiment with different offset, here
+applydim = 0
+invxyz = [1,0,0]
+
+for idx in range(offs):
+    for i in range(3):
+        idxs[order[i]] = idxs[order[i]] + 1
+        if (idxs[order[i]] != lims[order[i]]):
+            break
+        print
+        idxs[order[i]] = 0
+
+break_count = 0
+
+for idx in range(xdim * ydim * zdim):
+    ix = [0] * 3
+    for i in range(3):
+        if i >= applydim:
+            ix[i] = idxs[i]
+        if invxyz[i]:
+            ix[i] = lims[i] - 1 - ix[i]
+    new_idx = ix[0] + ix[1] * xdim + ix[2] * xdim * ydim
+    print new_idx,
+    break_count += 1
+    if break_count == lims[order[0]]:
+        print
+        break_count = 0
+    for i in range(3):
+        idxs[order[i]] = idxs[order[i]] + 1
+        if (idxs[order[i]] != lims[order[i]]):
+            break
+        idxs[order[i]] = 0