[clang] [llvm] Non constant size and offset in DWARF (PR #141106)

[Tom Tromey via cfe-commits]

================
@@ -966,20 +992,42 @@ class DIFixedPointType : public DIBasicType {
           uint64_t SizeInBits, uint32_t AlignInBits, unsigned Encoding,
           DIFlags Flags, unsigned Kind, int Factor, APInt Numerator,
           APInt Denominator, StorageType Storage, bool ShouldCreate = true) {
+    auto *SizeInBitsNode = ConstantAsMetadata::get(
+        ConstantInt::get(Type::getInt64Ty(Context), SizeInBits));
+    return getImpl(Context, Tag, getCanonicalMDString(Context, Name),
+                   SizeInBitsNode, AlignInBits, Encoding, Flags, Kind, Factor,
+                   Numerator, Denominator, Storage, ShouldCreate);
+  }
+  static DIFixedPointType *
+  getImpl(LLVMContext &Context, unsigned Tag, StringRef Name,
+          Metadata *SizeInBits, uint32_t AlignInBits, unsigned Encoding,
+          DIFlags Flags, unsigned Kind, int Factor, APInt Numerator,
+          APInt Denominator, StorageType Storage, bool ShouldCreate = true) {
     return getImpl(Context, Tag, getCanonicalMDString(Context, Name),
                    SizeInBits, AlignInBits, Encoding, Flags, Kind, Factor,
                    Numerator, Denominator, Storage, ShouldCreate);
   }
   LLVM_ABI static DIFixedPointType *
   getImpl(LLVMContext &Context, unsigned Tag, MDString *Name,
-          uint64_t SizeInBits, uint32_t AlignInBits, unsigned Encoding,
+          uint32_t SizeInBits, uint32_t AlignInBits, unsigned Encoding,
----------------
tromey wrote:

I didn't mean to change the type of `SizeInBits` here.  I don't think it is 
harmful as is, but I'll fix it and upload a new patch shortly.

https://github.com/llvm/llvm-project/pull/141106
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