[lld] [lld] Use range-based for loops (NFC) (PR #144251)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/144251

None

>From b778addd982654500fea4075403b67615f05f5e8 Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sun, 15 Jun 2025 00:31:05 -0700
Subject: [PATCH] [lld] Use range-based for loops (NFC)

---
 lld/ELF/Arch/ARM.cpp            | 6 +++---
 lld/ELF/SyntheticSections.cpp   | 7 +++----
 lld/MachO/SyntheticSections.cpp | 4 +---
 lld/wasm/Driver.cpp             | 6 +++---
 4 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/lld/ELF/Arch/ARM.cpp b/lld/ELF/Arch/ARM.cpp
index aa90fecc533e3..91a673f13d68e 100644
--- a/lld/ELF/Arch/ARM.cpp
+++ b/lld/ELF/Arch/ARM.cpp
@@ -1317,11 +1317,11 @@ void elf::processArmCmseSymbols(Ctx &ctx) {
   // with its corresponding special symbol __acle_se_<sym>.
   parallelForEach(ctx.objectFiles, [&](InputFile *file) {
     MutableArrayRef<Symbol *> syms = file->getMutableSymbols();
-    for (size_t i = 0, e = syms.size(); i != e; ++i) {
-      StringRef symName = syms[i]->getName();
+    for (Symbol *&sym : syms) {
+      StringRef symName = sym->getName();
       auto it = ctx.symtab->cmseSymMap.find(symName);
       if (it != ctx.symtab->cmseSymMap.end())
-        syms[i] = it->second.acleSeSym;
+        sym = it->second.acleSeSym;
     }
   });
 }
diff --git a/lld/ELF/SyntheticSections.cpp b/lld/ELF/SyntheticSections.cpp
index 051e5cd04ef50..efec41a737b62 100644
--- a/lld/ELF/SyntheticSections.cpp
+++ b/lld/ELF/SyntheticSections.cpp
@@ -4026,10 +4026,9 @@ void MergeNoTailSection::finalizeContents() {
   // So far, section pieces have offsets from beginning of shards, but
   // we want offsets from beginning of the whole section. Fix them.
   parallelForEach(sections, [&](MergeInputSection *sec) {
-    for (size_t i = 0, e = sec->pieces.size(); i != e; ++i)
-      if (sec->pieces[i].live)
-        sec->pieces[i].outputOff +=
-            shardOffsets[getShardId(sec->pieces[i].hash)];
+    for (SectionPiece &piece : sec->pieces)
+      if (piece.live)
+        piece.outputOff += shardOffsets[getShardId(piece.hash)];
   });
 }
 
diff --git a/lld/MachO/SyntheticSections.cpp b/lld/MachO/SyntheticSections.cpp
index 0b7f233042487..979a4ee6d8133 100644
--- a/lld/MachO/SyntheticSections.cpp
+++ b/lld/MachO/SyntheticSections.cpp
@@ -947,9 +947,7 @@ uint64_t ObjCStubsSection::getSize() const {
 
 void ObjCStubsSection::writeTo(uint8_t *buf) const {
   uint64_t stubOffset = 0;
-  for (size_t i = 0, n = symbols.size(); i < n; ++i) {
-    Defined *sym = symbols[i];
-
+  for (Defined *sym : symbols) {
     auto methname = getMethname(sym);
     InputSection *selRef = ObjCSelRefsHelper::getSelRef(methname);
     assert(selRef != nullptr && "no selref for methname");
diff --git a/lld/wasm/Driver.cpp b/lld/wasm/Driver.cpp
index 2b1fb945f41c8..1c5d21c06f5af 100644
--- a/lld/wasm/Driver.cpp
+++ b/lld/wasm/Driver.cpp
@@ -1226,9 +1226,9 @@ static void wrapSymbols(ArrayRef<WrappedSymbol> wrapped) {
   // Update pointers in input files.
   parallelForEach(ctx.objectFiles, [&](InputFile *file) {
     MutableArrayRef<Symbol *> syms = file->getMutableSymbols();
-    for (size_t i = 0, e = syms.size(); i != e; ++i)
-      if (Symbol *s = map.lookup(syms[i]))
-        syms[i] = s;
+    for (Symbol *&sym : syms)
+      if (Symbol *s = map.lookup(sym))
+        sym = s;
   });
 
   // Update pointers in the symbol table.