Changes in directory llvm/lib/VMCore:
Constants.cpp updated: 1.198 -> 1.199
---
Log message:
Allow isAllOnesValue testing on packed constants
---
Diffs of the changes: (+16 -0)
Constants.cpp | 16 ++++++++++++++++
1 files changed, 16 insertions(+)
Index: llvm/lib/VMCore/Constants.cpp
diff -u llvm/lib/VMCore/Constants.cpp:1.198 llvm/lib/VMCore/Constants.cpp:1.199
--- llvm/lib/VMCore/Constants.cpp:1.198 Fri Jan 12 01:05:14 2007
+++ llvm/lib/VMCore/Constants.cpp Fri Jan 12 16:39:14 2007
@@ -1166,6 +1166,22 @@
destroyConstantImpl();
}
+/// This function will return true iff every element in this packed constant
+/// is set to all ones.
+/// @returns true iff this constant's emements are all set to all ones.
+/// @brief Determine if the value is all ones.
+bool ConstantPacked::isAllOnesValue() const {
+ // Check out first element.
+ const Constant *Elt = getOperand(0);
+ const ConstantInt *CI = dyn_cast<ConstantInt>(Elt);
+ if (!CI || !CI->isAllOnesValue()) return false;
+ // Then make sure all remaining elements point to the same value.
+ for (unsigned I = 1, E = getNumOperands(); I < E; ++I) {
+ if (getOperand(I) != Elt) return false;
+ }
+ return true;
+}
+
//---- ConstantPointerNull::get() implementation...
//
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