[clang] [WebKit checkers] Treat asm brk as trivial (PR #155046)

[Ryosuke Niwa via cfe-commits]

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@@ -666,6 +666,10 @@ class TrivialFunctionAnalysisVisitor
     return IsFunctionTrivial(Callee);
   }
 
+  bool VisitGCCAsmStmt(const GCCAsmStmt *AS) {
+    return AS->getAsmString() == "brk #0xc471";
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rniwa wrote:

We could consider stripping whitespace but it's probably not necessary for a WebKit specific checker since we would never add random whitespace around `brk`. Having said that, in long term, a better solution would be to provide a way to annotate that a function causes the program to terminate.

https://github.com/llvm/llvm-project/pull/155046