Turn off FMA contraction by default (#4545)

Signed-off-by: Anatoly Myachev <[email protected]>

Author: whitneywhtsang

third_party/intel/triton_xpu.cc

@@ -295,8 +295,8 @@ void init_triton_intel(py::module &&m) {
       for (Instruction &inst : instructions(func)) {
         if (auto *op = dyn_cast<FPMathOperator>(&inst)) {
           FastMathFlags FMF;
-          // Default to allow contract when default fp fusion is not disabled.
-          if ((!enableFpFusion.has_value() || enableFpFusion.value()) &&
+          // Allow contract when default fp fusion is enabled.
+          if ((enableFpFusion.has_value() && enableFpFusion.value()) &&
               !fastMath.has_value()) {
             if (op->getOpcode() == Instruction::FAdd ||
                 op->getOpcode() == Instruction::FMul)