[llvm] [DebugInfo] Add a new DI flag to record if the name of a template function/type has been simplified (1/3). (PR #175130)

[Liu Ke via llvm-commits]

https://github.com/Sockke created https://github.com/llvm/llvm-project/pull/175130

This flag is used during debug info generation in the LLVM backend to guide the selective generation of template parameters in the skeleton CU. As described in [this RFC](https://discourse.llvm.org/t/rfc-debuginfo-selectively-generate-template-parameters-in-the-skeleton-cu/89395).


>From 46941077421f2ce0eac79ab1eb51d10d0d138a8a Mon Sep 17 00:00:00 2001
From: "liuke.gehry" <liuke.gehry at bytedance.com>
Date: Fri, 9 Jan 2026 13:42:55 +0800
Subject: [PATCH] [DebugInfo] Add a new DI flag to record if the name of a
 template function/type has been simplified (1/3).

---
 llvm/include/llvm/IR/DebugInfoFlags.def | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/llvm/include/llvm/IR/DebugInfoFlags.def b/llvm/include/llvm/IR/DebugInfoFlags.def
index df375b6c68e81..44946b1fb83b7 100644
--- a/llvm/include/llvm/IR/DebugInfoFlags.def
+++ b/llvm/include/llvm/IR/DebugInfoFlags.def
@@ -58,6 +58,7 @@ HANDLE_DI_FLAG((1 << 26), NonTrivial)
 HANDLE_DI_FLAG((1 << 27), BigEndian)
 HANDLE_DI_FLAG((1 << 28), LittleEndian)
 HANDLE_DI_FLAG((1 << 29), AllCallsDescribed)
+HANDLE_DI_FLAG((1 << 30), NameIsSimplified)
 
 // To avoid needing a dedicated value for IndirectVirtualBase, we use
 // the bitwise or of Virtual and FwdDecl, which does not otherwise
@@ -67,7 +68,7 @@ HANDLE_DI_FLAG((1 << 2) | (1 << 5), IndirectVirtualBase)
 #ifdef DI_FLAG_LARGEST_NEEDED
 // intended to be used with ADT/BitmaskEnum.h
 // NOTE: always must be equal to largest flag, check this when adding new flag
-HANDLE_DI_FLAG((1 << 29), Largest)
+HANDLE_DI_FLAG((1 << 30), Largest)
 #undef DI_FLAG_LARGEST_NEEDED
 #endif