[GSB] Don't eagerly minimize the term-rewriting system.

DougGregor · DougGregor · commit 455cb60a9e2e · 2018-03-09T10:42:15.000-08:00
It's not worth the cost in compile times.
diff --git a/lib/AST/GenericSignatureBuilder.cpp b/lib/AST/GenericSignatureBuilder.cpp
@@ -2289,9 +2289,6 @@ Type EquivalenceClass::getAnchor(
     return substAnchor();
   }
 
-  // Always work with a minimized term-rewriting system.
-  builder.Impl->minimizeRewriteTree(builder);
-
   // Form the anchor.
   bool updatedAnchor = false;
   for (auto member : members) {

Original file line number	Diff line number	Diff line change
`@@ -2289,9 +2289,6 @@ Type EquivalenceClass::getAnchor(`
`2289`	`2289`	`return substAnchor();`
`2290`	`2290`	`}`
`2291`	`2291`
`2292`		`- // Always work with a minimized term-rewriting system.`
`2293`		`- builder.Impl->minimizeRewriteTree(builder);`
`2294`		`-`
`2295`	`2292`	`// Form the anchor.`
`2296`	`2293`	`bool updatedAnchor = false;`
`2297`	`2294`	`for (auto member : members) {`