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Add static assertions for unnecessary VN_IS/VN_AS/VN_CAST

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Fail at compile time if the result of these macros can be statically
determined (i.e.: they aways succeed or always fail). Remove unnecessary
casts discovered. No functional change.
This commit is contained in:
Geza Lore
2021-10-22 19:39:24 +01:00
parent 7cb6dc664e
commit 70603bb752
18 changed files with 83 additions and 59 deletions
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src/V3Active.cpp
+1 -2
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@@ -489,8 +489,7 @@ private:
// METHODS
void visitAlways(AstNode* nodep, AstSenTree* oldsensesp, VAlwaysKwd kwd) {
// Move always to appropriate ACTIVE based on its sense list
if (oldsensesp && oldsensesp->sensesp() && VN_IS(oldsensesp->sensesp(), SenItem)
&& VN_AS(oldsensesp->sensesp(), SenItem)->isNever()) {
if (oldsensesp && oldsensesp->sensesp() && oldsensesp->sensesp()->isNever()) {
// Never executing. Kill it.
UASSERT_OBJ(!oldsensesp->sensesp()->nextp(), nodep,
"Never senitem should be alone, else the never should be eliminated.");