[llvm] [RISCV][GISel] Add support for G_IS_FPCLASS in F and D extensions (PR #72000)

[Craig Topper via llvm-commits]

================
@@ -21,9 +22,8 @@
 using namespace llvm;
 using namespace LegalityPredicates;
 
-RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &ST) {
-  const unsigned XLen = ST.getXLen();
-  const LLT sXLen = LLT::scalar(XLen);
+RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &ST)
+    : STI(ST), XLen(STI.getXLen()), sXLen(LLT::scalar(XLen)) {
----------------
topperc wrote:

Where are XLen and sXLen used?

https://github.com/llvm/llvm-project/pull/72000