LLVM bump to include upstream verifier performance fix. (#7496)

Bump LLVM [1] to include an upstream verifier performance fix [2].

This required two minor fixes to CIRCT:

  * [HW] Qualify types for safer use in other dialects.
  * [ImportVerilog] Fix ternary with diff types, both become Value.

[1]: llvm/llvm-project@5689ccc...c69b8c4
[2]: llvm/llvm-project@7a98071

include/circt/Dialect/HW/HWTypes.td

@@ -39,7 +39,7 @@ def HWNonInOutType : DialectType<HWDialect,
 
 def InOutType : DialectType<HWDialect,
     CPred<"::circt::hw::type_isa<circt::hw::InOutType>($_self)">,
-          "InOutType", "InOutType">;
+          "InOutType", "::circt::hw::InOutType">;
 
 class InOutTypeOf<list<Type> allowedTypes>
   : ContainerType<AnyTypeOf<allowedTypes>, CPred<"::circt::hw::type_isa<::circt::hw::InOutType>($_self)">,
@@ -62,7 +62,7 @@ def StructType : DialectType<HWDialect,
 // A handle to refer to circt::hw::UnionType in ODS.
 def UnionType : DialectType<HWDialect,
     CPred<"::circt::hw::type_isa<circt::hw::UnionType>($_self)">,
-          "a UnionType", "::circt::hw::TypeAliasOr<hw::UnionType>">;
+          "a UnionType", "::circt::hw::TypeAliasOr<::circt::hw::UnionType>">;
 
 // A handle to refer to circt::hw::EnumType in ODS.
 def EnumType : DialectType<HWDialect,

lib/Conversion/ImportVerilog/Expressions.cpp

@@ -178,7 +178,9 @@ struct RvalueExprVisitor {
         isInc ? builder.create<moore::AddOp>(loc, preValue, one).getResult()
               : builder.create<moore::SubOp>(loc, preValue, one).getResult();
     builder.create<moore::BlockingAssignOp>(loc, arg, postValue);
-    return isPost ? preValue : postValue;
+    if (isPost)
+      return preValue;
+    return postValue;
   }
 
   // Handle unary operators.