Changes in directory llvm/include/llvm/ADT:
APInt.h updated: 1.40 -> 1.41
---
Log message:
Add getSignBit() and operator<<= into APInt for convenience.
---
Diffs of the changes: (+23 -0)
APInt.h | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+)
Index: llvm/include/llvm/ADT/APInt.h
diff -u llvm/include/llvm/ADT/APInt.h:1.40 llvm/include/llvm/ADT/APInt.h:1.41
--- llvm/include/llvm/ADT/APInt.h:1.40 Mon Mar 5 10:42:58 2007
+++ llvm/include/llvm/ADT/APInt.h Sun Mar 11 01:16:10 2007
@@ -386,6 +386,14 @@
/// @brief Left-shift function.
APInt shl(uint32_t shiftAmt) const;
+ /// Left-shift this APInt by shiftAmt and
+ /// assigns the result to this APInt.
+ /// @brief Lef-shift assignment function.
+ inline APInt& operator<<=(uint32_t shiftAmt) {
+ *this = shl(shiftAmt);
+ return *this;
+ }
+
/// Signed divide this APInt by APInt RHS.
/// @brief Signed division function for APInt.
inline APInt sdiv(const APInt& RHS) const {
@@ -464,6 +472,14 @@
/// @brief Toggles a given bit to its opposite value.
APInt& flip(uint32_t bitPosition);
+ inline void setWordToValue(uint32_t idx, uint64_t Val) {
+ assert(idx < getNumWords() && "Invalid word array index");
+ if (isSingleWord())
+ VAL = Val;
+ else
+ pVal[idx] = Val;
+ }
+
/// This function returns the number of active bits which is defined as the
/// bit width minus the number of leading zeros. This is used in several
/// computations to see how "wide" the value is.
@@ -551,6 +567,13 @@
return APInt(numBits, 0).set(numBits - 1);
}
+ /// getSignBit - This is just a wrapper function of getSignedMinValue(), and
+ /// it helps code readability when we want to get a SignBit.
+ /// @brief Get the SignBit for a specific bit width.
+ inline static APInt getSignBit(uint32_t BitWidth) {
+ return getSignedMinValue(BitWidth);
+ }
+
/// @returns the all-ones value for an APInt of the specified bit-width.
/// @brief Get the all-ones value.
static APInt getAllOnesValue(uint32_t numBits) {
_______________________________________________
llvm-commits mailing list
llvm-commits@cs.uiuc.edu
http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
