[CodeGen] Add MIR function and block attributes

1 files changed, 9 insertions, 0 deletions

diff --git a/backend/lib/CodeGen/MachineIRTypes.cpp b/backend/lib/CodeGen/MachineIRTypes.cpp
index 7f97e98..b5348b3 100644
--- a/backend/lib/CodeGen/MachineIRTypes.cpp
+++ b/backend/lib/CodeGen/MachineIRTypes.cpp
@@ -2,8 +2,17 @@
 
 #include "rcc/CodeGen/MachineIRTypes.h"
 
+#include <bit>
+
 namespace rcc {
 
+Expected<Alignment> Alignment::create(std::uint64_t Bytes) {
+  if (!std::has_single_bit(Bytes)) {
+    return makeUnexpected(ErrorCode::InvalidArgument, "alignment must be a nonzero power of two");
+  }
+  return Alignment(Bytes);
+}
+
 Expected<BranchProbability> BranchProbability::fromFraction(std::uint32_t Numerator,
                                                             std::uint32_t Denominator) {
   if (Denominator == 0) {