[IR] Bump AttributeBitSet width to 16 bytes

[yuxuanchen1997]

As discussed in #106134, we are bumping the width of this set to 16 bytes to accommodate more attributes. This allows us to have a total of 128 attributes instead of 96 as we stand today.

[llvmbot]

@llvm/pr-subscribers-llvm-ir

Author: Yuxuan Chen (yuxuanchen1997)

Changes

As discussed in #106134, we are bumping the width of this set to 16 bytes to accommodate more attributes.

---

Full diff: https://github.com/llvm/llvm-project/pull/106138.diff

1 Files Affected:

• (modified) llvm/lib/IR/AttributeImpl.h (+1-1)

diff --git a/llvm/lib/IR/AttributeImpl.h b/llvm/lib/IR/AttributeImpl.h
index b9441729b48c69..2f1c7b85e66502 100644
--- a/llvm/lib/IR/AttributeImpl.h
+++ b/llvm/lib/IR/AttributeImpl.h
@@ -275,7 +275,7 @@ class ConstantRangeListAttributeImpl final
 
 class AttributeBitSet {
   /// Bitset with a bit for each available attribute Attribute::AttrKind.
-  uint8_t AvailableAttrs[12] = {};
+  uint8_t AvailableAttrs[16] = {};
   static_assert(Attribute::EndAttrKinds <= sizeof(AvailableAttrs) * CHAR_BIT,
                 "Too many attributes");