From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Mon, 27 Mar 2023 10:57:32 +0000 (+0100)
Subject: whitespace (indentation)
X-Git-Tag: opf_rfc_ls001_v3~32
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d789a0d649e01c429c5c93ae486ba8a79117a3de;p=libreriscv.git

whitespace (indentation)
---

diff --git a/openpower/sv/rfc/ls009.mdwn b/openpower/sv/rfc/ls009.mdwn
index 44af23b15..45c176e57 100644
--- a/openpower/sv/rfc/ls009.mdwn
+++ b/openpower/sv/rfc/ls009.mdwn
@@ -522,6 +522,10 @@ SVSHAPE is actively applied or not.
 The "persistence" bit if set will result in all Active REMAPs being applied
 indefinitely.
 
+----------------
+
+\newpage{}
+
 # svremap instruction <a name="svremap"> </a>
 
 SVRM-Form:
@@ -538,6 +542,7 @@ SVRM-Form
 
 Pseudo-code:
 
+```
     # registers RA RB RC RT EA/FRS SVSHAPE0-3 indices
     SVSTATE[32:33] <- mi0
     SVSTATE[34:35] <- mi1
@@ -548,6 +553,7 @@ Pseudo-code:
     SVSTATE[42:46] <- SVme
     # persistence bit (applies to more than one instruction)
     SVSTATE[62] <- pst
+```
 
 Special Registers Altered:
 
@@ -680,8 +686,10 @@ it begins from xdimsz-1 and iterates down to zero. Likewise for y and z.
 
 offset will have the effect of offsetting the result by ```offset``` elements:
 
+```
     for i in 0..VL-1:
         GPR(RT + remap(i) + SVSHAPE.offset) = ....
+```
 
 this appears redundant because the register RT could simply be changed by a compiler, until element width overrides are introduced.  also
 bear in mind that unlike a static compiler SVSHAPE.offset may
@@ -696,7 +704,9 @@ X,Y of dimensionality X=3 and Y=2, set xdimsz=2, ydimsz=1 and zdimsz=0
 
 The format of the array is therefore as follows:
 
+```
     array[xdimsz+1][ydimsz+1][zdimsz+1]
+```
 
 However whilst illustrative of the dimensionality, that does not take the
 "permute" setting into account.  "permute" may be any one of six values
@@ -732,12 +742,12 @@ and includes optional limited 2D reordering.
 In its simplest form (without elwidth overrides or other modes):
 
 ```
-def index_remap(i):
-    return GPR((SVSHAPE.SVGPR<<1)+i) + SVSHAPE.offset
+    def index_remap(i):
+        return GPR((SVSHAPE.SVGPR<<1)+i) + SVSHAPE.offset
 
-for i in 0..VL-1:
-    element_result = ....
-    GPR(RT + indexed_remap(i)) = element_result
+    for i in 0..VL-1:
+        element_result = ....
+        GPR(RT + indexed_remap(i)) = element_result
 ```
 
 With element-width overrides included, and using the pseudocode
@@ -745,16 +755,16 @@ from the SVP64 [[sv/svp64/appendix#elwidth]] elwidth section
 this becomes:
 
 ```
-def index_remap(i):
-    svreg = SVSHAPE.SVGPR << 1
-    srcwid = elwid_to_bitwidth(SVSHAPE.elwid)
-    offs = SVSHAPE.offset
-    return get_polymorphed_reg(svreg, srcwid, i) + offs
-
-for i in 0..VL-1:
-    element_result = ....
-    rt_idx = indexed_remap(i)
-    set_polymorphed_reg(RT, destwid, rt_idx, element_result)
+    def index_remap(i):
+        svreg = SVSHAPE.SVGPR << 1
+        srcwid = elwid_to_bitwidth(SVSHAPE.elwid)
+        offs = SVSHAPE.offset
+        return get_polymorphed_reg(svreg, srcwid, i) + offs
+
+    for i in 0..VL-1:
+        element_result = ....
+        rt_idx = indexed_remap(i)
+        set_polymorphed_reg(RT, destwid, rt_idx, element_result)
 ```
 
 Matrix-style reordering still applies to the indices, except limited
@@ -766,21 +776,21 @@ overrides) may be written in terms of Matrix Mode, specifically
 purposed to ensure that the 3rd dimension (Z) has no effect:
 
 ```
-def index_remap(ISHAPE, i):
-    MSHAPE.skip   = 0b0 || ISHAPE.sk1
-    MSHAPE.invxyz = 0b0 || ISHAPE.invxy
-    MSHAPE.xdimsz = ISHAPE.xdimsz
-    MSHAPE.ydimsz = ISHAPE.ydimsz
-    MSHAPE.zdimsz = 0 # disabled
-    if ISHAPE.permute = 0b110 # 0,1
-       MSHAPE.permute = 0b000 # 0,1,2
-    if ISHAPE.permute = 0b111 # 1,0
-       MSHAPE.permute = 0b010 # 1,0,2
-    el_idx = remap_matrix(MSHAPE, i)
-    svreg = ISHAPE.SVGPR << 1
-    srcwid = elwid_to_bitwidth(ISHAPE.elwid)
-    offs = ISHAPE.offset
-    return get_polymorphed_reg(svreg, srcwid, el_idx) + offs
+    def index_remap(ISHAPE, i):
+        MSHAPE.skip   = 0b0 || ISHAPE.sk1
+        MSHAPE.invxyz = 0b0 || ISHAPE.invxy
+        MSHAPE.xdimsz = ISHAPE.xdimsz
+        MSHAPE.ydimsz = ISHAPE.ydimsz
+        MSHAPE.zdimsz = 0 # disabled
+        if ISHAPE.permute = 0b110 # 0,1
+           MSHAPE.permute = 0b000 # 0,1,2
+        if ISHAPE.permute = 0b111 # 1,0
+           MSHAPE.permute = 0b010 # 1,0,2
+        el_idx = remap_matrix(MSHAPE, i)
+        svreg = ISHAPE.SVGPR << 1
+        srcwid = elwid_to_bitwidth(ISHAPE.elwid)
+        offs = ISHAPE.offset
+        return get_polymorphed_reg(svreg, srcwid, el_idx) + offs
 ```
 
 The most important observation above is that the Matrix-style