[llvm] [NewPM] Set diagnostic handler in `MachineModuleAnalysis` (PR #88229)

[via llvm-commits]

https://github.com/paperchalice created https://github.com/llvm/llvm-project/pull/88229

`setDiagnosticHandler` is idempotent.

>From e04abe8c23793b9a75ea81546dd65eb553e13f72 Mon Sep 17 00:00:00 2001
From: PaperChalice <liujunchang97 at outlook.com>
Date: Wed, 10 Apr 2024 10:32:54 +0800
Subject: [PATCH] [NewPM] Set diagnostic handler in `MachineModuleAnalysis`
 `setDiagnosticHandler` is idempotent.

---
 llvm/lib/CodeGen/MachineModuleInfo.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/CodeGen/MachineModuleInfo.cpp b/llvm/lib/CodeGen/MachineModuleInfo.cpp
index f24288bb69de00..1dba591d02b6c2 100644
--- a/llvm/lib/CodeGen/MachineModuleInfo.cpp
+++ b/llvm/lib/CodeGen/MachineModuleInfo.cpp
@@ -213,7 +213,6 @@ static unsigned getLocCookie(const SMDiagnostic &SMD, const SourceMgr &SrcMgr,
 bool MachineModuleInfoWrapperPass::doInitialization(Module &M) {
   MMI.initialize();
   MMI.TheModule = &M;
-  // FIXME: Do this for new pass manager.
   LLVMContext &Ctx = M.getContext();
   MMI.getContext().setDiagnosticHandler(
       [&Ctx, &M](const SMDiagnostic &SMD, bool IsInlineAsm,
@@ -240,6 +239,17 @@ AnalysisKey MachineModuleAnalysis::Key;
 MachineModuleAnalysis::Result
 MachineModuleAnalysis::run(Module &M, ModuleAnalysisManager &) {
   MMI.TheModule = &M;
+  LLVMContext &Ctx = M.getContext();
+  MMI.getContext().setDiagnosticHandler(
+      [&Ctx, &M](const SMDiagnostic &SMD, bool IsInlineAsm,
+                 const SourceMgr &SrcMgr,
+                 std::vector<const MDNode *> &LocInfos) {
+        unsigned LocCookie = 0;
+        if (IsInlineAsm)
+          LocCookie = getLocCookie(SMD, SrcMgr, LocInfos);
+        Ctx.diagnose(
+            DiagnosticInfoSrcMgr(SMD, M.getName(), IsInlineAsm, LocCookie));
+      });
   MMI.DbgInfoAvailable =
       !DisableDebugInfoPrinting && !M.debug_compile_units().empty();
   return Result(MMI);