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-rw-r--r--include/llvm/Analysis/ValueTracking.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/llvm/Analysis/ValueTracking.h b/include/llvm/Analysis/ValueTracking.h
index dcc150d..370282d 100644
--- a/include/llvm/Analysis/ValueTracking.h
+++ b/include/llvm/Analysis/ValueTracking.h
@@ -77,7 +77,13 @@ namespace llvm {
///
bool CannotBeNegativeZero(const Value *V, unsigned Depth = 0);
-
+ /// isBytewiseValue - If the specified value can be set by repeating the same
+ /// byte in memory, return the i8 value that it is represented with. This is
+ /// true for all i8 values obviously, but is also true for i32 0, i32 -1,
+ /// i16 0xF0F0, double 0.0 etc. If the value can't be handled with a repeated
+ /// byte store (e.g. i16 0x1234), return null.
+ Value *isBytewiseValue(Value *V);
+
/// FindInsertedValue - Given an aggregrate and an sequence of indices, see if
/// the scalar value indexed is already around as a register, for example if
/// it were inserted directly into the aggregrate.