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Internals: Add isRanged, more debug. No functional change.

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This commit is contained in:
Wilson Snyder
2012-03-04 16:18:41 -05:00
parent 03dfbdb7b1
commit 8687dcbce1
8 changed files with 35 additions and 18 deletions
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src/V3WidthSel.cpp
+4 -3
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@@ -144,12 +144,13 @@ private:
// Don't report WIDTH warnings etc here, as may be inside a generate branch that will be deleted
AstVar* varp = varFromBasefrom(basefromp);
// SUB #'s Not needed when LSB==0 and MSB>=0 (ie [0:-13] must still get added!)
if (!varp->basicp()->rangep()) {
if (!varp->basicp()->isRanged()) {
// vector without range, or 0 lsb is ok, for example a INTEGER x; y = x[21:0];
return underp;
} else {
if (!varp->basicp()->rangep()->msbp()->castConst()
|| !varp->basicp()->rangep()->lsbp()->castConst())
if (varp->basicp()->rangep()
&& (!varp->basicp()->rangep()->msbp()->castConst()
|| !varp->basicp()->rangep()->lsbp()->castConst()))
varp->v3fatalSrc("Non-constant variable range; errored earlier"); // in constifyParam(varp)
if (varp->basicp()->littleEndian()) {
// reg [1:3] was swapped to [3:1] (lsbEndianedp==3) and needs a SUB(3,under)