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-rw-r--r--include/llvm/ADT/APInt.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/llvm/ADT/APInt.h b/include/llvm/ADT/APInt.h
index 41234da..13b353c 100644
--- a/include/llvm/ADT/APInt.h
+++ b/include/llvm/ADT/APInt.h
@@ -505,6 +505,17 @@ public:
return getAllOnesValue(numBits).lshr(numBits - loBitsSet);
}
+ /// \brief Return a value containing V broadcasted over NewLen bits.
+ static APInt getSplat(unsigned NewLen, const APInt &V) {
+ assert(NewLen >= V.getBitWidth() && "Can't splat to smaller bit width!");
+
+ APInt Val = V.zextOrSelf(NewLen);
+ for (unsigned I = V.getBitWidth(); I < NewLen; I <<= 1)
+ Val |= Val << I;
+
+ return Val;
+ }
+
/// \brief Determine if two APInts have the same value, after zero-extending
/// one of them (if needed!) to ensure that the bit-widths match.
static bool isSameValue(const APInt &I1, const APInt &I2) {