[llvm] CodeGen: Fix CGPassBuilderOption::EnableGlobalISelOption for -global-isel=0 (PR #201871)

[Matt Arsenault via llvm-commits]

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@@ -505,7 +505,8 @@ CGPassBuilderOption llvm::getCGPassBuilderOption() {
 
   SET_OPTION(EnableFastISelOption)
   SET_OPTION(EnableGlobalISelAbort)
-  SET_OPTION(EnableGlobalISelOption)
+  if (EnableGlobalISelOption.getNumOccurrences())
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arsenm wrote:

I don't understand why this option is special compared to all of the others 

https://github.com/llvm/llvm-project/pull/201871