[llvm] [PPC] Set minimum of largest number of comparisons to use bit test for switch lowering (PR #155910)

[Shimin Cui via llvm-commits]

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@@ -2120,6 +2126,14 @@ bool TargetLoweringBase::isJumpTableRelative() const {
   return getTargetMachine().isPositionIndependent();
 }
 
+unsigned TargetLoweringBase::getMinimumBitTestCmps() const {
+  return MinimumBitTestCmps;
+}
+
+void TargetLoweringBase::setMinimumBitTestCmps(unsigned Val) {
+  MinimumBitTestCmps = Val;
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scui-ibm wrote:

Thanks for the comments. I changed to use a member variable to avoid the thread-safe issue. There are some existing code pattern like this, we can change in other PR. 

https://github.com/llvm/llvm-project/pull/155910