[clang] [CIR] Add math and builtin intrinsics support (PR #175233)

[Hendrik Hübner via cfe-commits]

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@@ -677,6 +753,35 @@ RValue CIRGenFunction::emitBuiltinExpr(const GlobalDecl &gd, unsigned builtinID,
     cir::VACopyOp::create(builder, dstPtr.getLoc(), dstPtr, srcPtr);
     return {};
   }
+
+  case Builtin::BIabs:
+  case Builtin::BIlabs:
+  case Builtin::BIllabs:
+  case Builtin::BI__builtin_abs:
+  case Builtin::BI__builtin_labs:
+  case Builtin::BI__builtin_llabs: {
+    bool sanitizeOverflow = sanOpts.has(SanitizerKind::SignedIntegerOverflow);
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HendrikHuebner wrote:

Can you move this case to a separate helper function?

https://github.com/llvm/llvm-project/pull/175233