[llvm] [BOLT] Fix enumeration of secondary entry points (PR #86848)

[Amir Ayupov via llvm-commits]

https://github.com/aaupov created https://github.com/llvm/llvm-project/pull/86848

Make them start with 1 instead of 0 (reserved for primary entry point).

Test Plan: TBD


>From b4357d14ba7c40e7ffde4036600b351964a23f9e Mon Sep 17 00:00:00 2001
From: Amir Ayupov <aaupov at fb.com>
Date: Wed, 27 Mar 2024 11:25:34 -0700
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20initia?=
 =?UTF-8?q?l=20version?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Created using spr 1.3.4
---
 bolt/lib/Core/BinaryFunction.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/bolt/lib/Core/BinaryFunction.cpp b/bolt/lib/Core/BinaryFunction.cpp
index fdadef9dcd3848..c9e037c225dd41 100644
--- a/bolt/lib/Core/BinaryFunction.cpp
+++ b/bolt/lib/Core/BinaryFunction.cpp
@@ -3547,7 +3547,7 @@ MCSymbol *BinaryFunction::getSymbolForEntryID(uint64_t EntryID) {
   if (!isMultiEntry())
     return nullptr;
 
-  uint64_t NumEntries = 0;
+  uint64_t NumEntries = 1;
   if (hasCFG()) {
     for (BinaryBasicBlock *BB : BasicBlocks) {
       MCSymbol *EntrySymbol = getSecondaryEntryPointSymbol(*BB);
@@ -3580,7 +3580,7 @@ uint64_t BinaryFunction::getEntryIDForSymbol(const MCSymbol *Symbol) const {
       return 0;
 
   // Check all secondary entries available as either basic blocks or lables.
-  uint64_t NumEntries = 0;
+  uint64_t NumEntries = 1;
   for (const BinaryBasicBlock *BB : BasicBlocks) {
     MCSymbol *EntrySymbol = getSecondaryEntryPointSymbol(*BB);
     if (!EntrySymbol)
@@ -3589,7 +3589,7 @@ uint64_t BinaryFunction::getEntryIDForSymbol(const MCSymbol *Symbol) const {
       return NumEntries;
     ++NumEntries;
   }
-  NumEntries = 0;
+  NumEntries = 1;
   for (const std::pair<const uint32_t, MCSymbol *> &KV : Labels) {
     MCSymbol *EntrySymbol = getSecondaryEntryPointSymbol(KV.second);
     if (!EntrySymbol)