[clang] [analyzer] Add option assume-one-iteration (PR #125494)

[Donát Nagy via cfe-commits]

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@@ -294,6 +294,16 @@ ANALYZER_OPTION(
     bool, ShouldUnrollLoops, "unroll-loops",
     "Whether the analysis should try to unroll loops with known bounds.", false)
 
+ANALYZER_OPTION(
+    bool, ShouldAssumeOneIteration, "assume-one-iteration",
+    "Whether the analyzer should always assume at least one iteration in "
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NagyDonat wrote:

> How about the naive "assume-at-least-one-iteration"?

I felt that it's a bit too long, but if you prefer it (and other reviewers aren't opposed), then I can accept it.

https://github.com/llvm/llvm-project/pull/125494