[lldb] [flang] [libcxx] [lld] [clang] [compiler-rt] [libcxxabi] [libunwind] [libc] [llvm] [clang-tools-extra] Fix a bug in Smith's algorithm used in complex div/mul. (PR #78330)

[Andy Kaylor via llvm-commits]

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@@ -2780,24 +2781,24 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
     case options::OPT_fcx_limited_range: {
       EmitComplexRangeDiag(D, Range, LangOptions::ComplexRangeKind::CX_Limited);
       Range = LangOptions::ComplexRangeKind::CX_Limited;
-      std::string ComplexRangeStr = RenderComplexRangeOption("limited");
-      if (!ComplexRangeStr.empty())
-        CmdArgs.push_back(Args.MakeArgString(ComplexRangeStr));
+      ComplexRangeStr = RenderComplexRangeOption("limited");
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andykaylor wrote:

I think it would be better to move the rendering of this option to the bottom of this function (around line 3124) to avoid inserting multiple, conflicting options if more than one -f[no-]cx-* option is used.

https://github.com/llvm/llvm-project/pull/78330