[llvm] [BOLT][NFC] Unset UseAssemblerInfoForParsing for emission (PR #94778)

[Amir Ayupov via llvm-commits]

https://github.com/aaupov created https://github.com/llvm/llvm-project/pull/94778

Summary:
Use workaround for quadratic behavior inside
AttemptToFoldSymbolOffsetDifference called from BinaryEmitter::emitLSDA.

https://github.com/llvm/llvm-project/commit/b06e736982a3568fe2bcea8688550f9e393b7450#commitcomment-142836456


>From 84fe490be27fc2e5d338bad88ee734ed9743b2ec Mon Sep 17 00:00:00 2001
From: Amir Ayupov <aaupov at fb.com>
Date: Fri, 7 Jun 2024 09:52:01 -0700
Subject: [PATCH] [BOLT][NFC] Unset UseAssemblerInfoForParsing for emission

Summary:
Use workaround for quadratic behavior inside
AttemptToFoldSymbolOffsetDifference called from BinaryEmitter::emitLSDA.

https://github.com/llvm/llvm-project/commit/b06e736982a3568fe2bcea8688550f9e393b7450#commitcomment-142836456
---
 bolt/lib/Core/BinaryEmitter.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/bolt/lib/Core/BinaryEmitter.cpp b/bolt/lib/Core/BinaryEmitter.cpp
index 0b44acb0816f2..5793963f9b80d 100644
--- a/bolt/lib/Core/BinaryEmitter.cpp
+++ b/bolt/lib/Core/BinaryEmitter.cpp
@@ -194,6 +194,7 @@ class BinaryEmitter {
 
 void BinaryEmitter::emitAll(StringRef OrgSecPrefix) {
   Streamer.initSections(false, *BC.STI);
+  Streamer.setUseAssemblerInfoForParsing(false);
 
   if (opts::UpdateDebugSections && BC.isELF()) {
     // Force the emission of debug line info into allocatable section to ensure
@@ -226,6 +227,7 @@ void BinaryEmitter::emitAll(StringRef OrgSecPrefix) {
   // TODO Enable for Mach-O once BinaryContext::getDataSection supports it.
   if (BC.isELF())
     AddressMap::emit(Streamer, BC);
+  Streamer.setUseAssemblerInfoForParsing(true);
 }
 
 void BinaryEmitter::emitFunctions() {