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| author | Guillaume Chatelet <gchatelet@google.com> | 2023-06-26 13:58:30 +0000 |
|---|---|---|
| committer | Guillaume Chatelet <gchatelet@google.com> | 2023-06-27 09:27:47 +0000 |
| commit | b745c123857e0153d75f8793df79497c41f39bf5 (patch) | |
| tree | cd7f89346801339e19e85960c81557bf3f4bc317 /llvm/lib/Support/APInt.cpp | |
| parent | 956f5c5f6de88af7d0c9844ab40979bb45a51ad4 (diff) | |
| download | llvm-b745c123857e0153d75f8793df79497c41f39bf5.zip llvm-b745c123857e0153d75f8793df79497c41f39bf5.tar.gz llvm-b745c123857e0153d75f8793df79497c41f39bf5.tar.bz2 | |
[Align] Add isAligned taking an APInt
This showed up in https://reviews.llvm.org/D153308
Reviewed By: courbet, nikic
Differential Revision: https://reviews.llvm.org/D153356
Diffstat (limited to 'llvm/lib/Support/APInt.cpp')
| -rw-r--r-- | llvm/lib/Support/APInt.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/llvm/lib/Support/APInt.cpp b/llvm/lib/Support/APInt.cpp index bd8358c..05b1526 100644 --- a/llvm/lib/Support/APInt.cpp +++ b/llvm/lib/Support/APInt.cpp @@ -19,6 +19,7 @@ #include "llvm/ADT/StringRef.h" #include "llvm/ADT/bit.h" #include "llvm/Config/llvm-config.h" +#include "llvm/Support/Alignment.h" #include "llvm/Support/Debug.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/MathExtras.h" @@ -164,6 +165,14 @@ void APInt::Profile(FoldingSetNodeID& ID) const { ID.AddInteger(U.pVal[i]); } +bool APInt::isAligned(Align A) const { + if (isZero()) + return true; + const unsigned TrailingZeroes = countr_zero(); + const unsigned MinimumTrailingZeroes = Log2(A); + return TrailingZeroes >= MinimumTrailingZeroes; +} + /// Prefix increment operator. Increments the APInt by one. APInt& APInt::operator++() { if (isSingleWord()) |