[llvm] 23b8a19 - [DwarfDebug] Add forward declarations of "<" operators [NFC]

[Mikael Holmen via llvm-commits]

Author: Mikael Holmen
Date: 2023-09-29T09:17:56+02:00
New Revision: 23b8a19a1bce39d1e491e63d37b21ca8f6d2158f

URL: https://github.com/llvm/llvm-project/commit/23b8a19a1bce39d1e491e63d37b21ca8f6d2158f
DIFF: https://github.com/llvm/llvm-project/commit/23b8a19a1bce39d1e491e63d37b21ca8f6d2158f.diff

LOG: [DwarfDebug] Add forward declarations of "<" operators [NFC]

The operators are defined in DwarfDebug.cpp but are
referenced in the struct definitions of FrameIndexExpr and
EntryValueInfo in DwarfDebug.h, and since they weren't
declared before, gcc warned with

 [694/5646] Building CXX object lib/CodeGen/AsmPrinter/CMakeFiles/LLVMAsmPrinter.dir/DwarfDebug.cpp.o
 ../lib/CodeGen/AsmPrinter/DwarfDebug.cpp:273:6: warning: 'bool llvm::operator<(const llvm::FrameIndexExpr&, const llvm::FrameIndexExpr&)' has not been declared within 'llvm'
   273 | bool llvm::operator<(const FrameIndexExpr &LHS, const FrameIndexExpr &RHS) {
       |      ^~~~
 In file included from ../lib/CodeGen/AsmPrinter/DwarfDebug.cpp:13:
 ../lib/CodeGen/AsmPrinter/DwarfDebug.h:112:15: note: only here as a 'friend'
   112 |   friend bool operator<(const FrameIndexExpr &LHS, const FrameIndexExpr &RHS);
       |               ^~~~~~~~
 ../lib/CodeGen/AsmPrinter/DwarfDebug.cpp:278:6: warning: 'bool llvm::operator<(const llvm::EntryValueInfo&, const llvm::EntryValueInfo&)' has not been declared within 'llvm'
   278 | bool llvm::operator<(const EntryValueInfo &LHS, const EntryValueInfo &RHS) {
       |      ^~~~
 In file included from ../lib/CodeGen/AsmPrinter/DwarfDebug.cpp:13:
 ../lib/CodeGen/AsmPrinter/DwarfDebug.h:121:15: note: only here as a 'friend'
   121 |   friend bool operator<(const EntryValueInfo &LHS, const EntryValueInfo &RHS);
       |               ^~~~~~~~

Added: 
    

Modified: 
    llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h

Removed: 
    


################################################################################
diff  --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 52b342fe150fa57..75649a747602ef5 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -103,6 +103,11 @@ class DbgEntity {
 
 class DbgVariable;
 
+bool operator<(const struct FrameIndexExpr &LHS,
+               const struct FrameIndexExpr &RHS);
+bool operator<(const struct EntryValueInfo &LHS,
+               const struct EntryValueInfo &RHS);
+
 /// Proxy for one MMI entry.
 struct FrameIndexExpr {
   int FI;