1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/lib/Support/APInt.cpp b/llvm/lib/Support/APInt.cpp
index 0c0e1d0..f6fd5f9 100644
--- a/llvm/lib/Support/APInt.cpp
+++ b/llvm/lib/Support/APInt.cpp
@@ -3169,3 +3169,21 @@ APInt APIntOps::pow(const APInt &X, int64_t N) {
   }
   return Acc;
 }
+
+APInt llvm::APIntOps::fshl(const APInt &Hi, const APInt &Lo,
+                           const APInt &Shift) {
+  assert(Hi.getBitWidth() == Lo.getBitWidth());
+  unsigned ShiftAmt = rotateModulo(Hi.getBitWidth(), Shift);
+  if (ShiftAmt == 0)
+    return Hi;
+  return Hi.shl(ShiftAmt) | Lo.lshr(Hi.getBitWidth() - ShiftAmt);
+}
+
+APInt llvm::APIntOps::fshr(const APInt &Hi, const APInt &Lo,
+                           const APInt &Shift) {
+  assert(Hi.getBitWidth() == Lo.getBitWidth());
+  unsigned ShiftAmt = rotateModulo(Hi.getBitWidth(), Shift);
+  if (ShiftAmt == 0)
+    return Lo;
+  return Hi.shl(Hi.getBitWidth() - ShiftAmt) | Lo.lshr(ShiftAmt);
+}