[clang] [llvm] Remove -bounds-checking-unique-traps (replace with -fno-sanitize-merge=local-bounds) (PR #120682)

[Thurston Dang via cfe-commits]

================
@@ -1281,31 +1281,43 @@ parseRegAllocFastPassOptions(PassBuilder &PB, StringRef 
Params) {
   return Opts;
 }
 
-Expected<BoundsCheckingPass::ReportingMode>
+Expected<BoundsCheckingPass::BoundsCheckingOptions>
 parseBoundsCheckingOptions(StringRef Params) {
-  BoundsCheckingPass::ReportingMode Mode =
-      BoundsCheckingPass::ReportingMode::Trap;
+  BoundsCheckingPass::BoundsCheckingOptions Options(
+      BoundsCheckingPass::ReportingMode::Trap, true);
   while (!Params.empty()) {
     StringRef ParamName;
     std::tie(ParamName, Params) = Params.split(';');
     if (ParamName == "trap") {
-      Mode = BoundsCheckingPass::ReportingMode::Trap;
+      Options.Mode = BoundsCheckingPass::ReportingMode::Trap;
     } else if (ParamName == "rt") {
-      Mode = BoundsCheckingPass::ReportingMode::FullRuntime;
+      Options.Mode = BoundsCheckingPass::ReportingMode::FullRuntime;
     } else if (ParamName == "rt-abort") {
-      Mode = BoundsCheckingPass::ReportingMode::FullRuntimeAbort;
+      Options.Mode = BoundsCheckingPass::ReportingMode::FullRuntimeAbort;
     } else if (ParamName == "min-rt") {
-      Mode = BoundsCheckingPass::ReportingMode::MinRuntime;
+      Options.Mode = BoundsCheckingPass::ReportingMode::MinRuntime;
     } else if (ParamName == "min-rt-abort") {
-      Mode = BoundsCheckingPass::ReportingMode::MinRuntimeAbort;
+      Options.Mode = BoundsCheckingPass::ReportingMode::MinRuntimeAbort;
+    } else if (ParamName.consume_front("merge=")) {
+      if (ParamName == "true")
----------------
thurstond wrote:

Changed to simple match of 'merge'

https://github.com/llvm/llvm-project/pull/120682
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