[lld] [lld][WebAssembly] do not relocate ABOSULTE symbols (PR #153763)

YAMAMOTO Takashi via llvm-commits llvm-commits at lists.llvm.org
Fri Aug 15 01:17:32 PDT 2025


https://github.com/yamt created https://github.com/llvm/llvm-project/pull/153763

Fixes https://github.com/llvm/llvm-project/pull/153537

>From 0196c11b0de9d0e52454c359b263b7b60d829f2f Mon Sep 17 00:00:00 2001
From: YAMAMOTO Takashi <yamamoto at midokura.com>
Date: Fri, 15 Aug 2025 17:15:22 +0900
Subject: [PATCH] [lld][WebAssembly] do not relocate ABOSULTE symbols

Fixes https://github.com/llvm/llvm-project/pull/153537
---
 lld/wasm/SyntheticSections.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lld/wasm/SyntheticSections.cpp b/lld/wasm/SyntheticSections.cpp
index e1192706ea913..6c1c4391ea0d7 100644
--- a/lld/wasm/SyntheticSections.cpp
+++ b/lld/wasm/SyntheticSections.cpp
@@ -442,6 +442,8 @@ void GlobalSection::generateRelocationCode(raw_ostream &os, bool TLS) const {
   for (const Symbol *sym : internalGotSymbols) {
     if (TLS != sym->isTLS())
       continue;
+    if (sym->flags & WASM_SYMBOL_ABSOLUTE)
+      continue;
 
     if (auto *d = dyn_cast<DefinedData>(sym)) {
       // Get __memory_base
@@ -503,7 +505,8 @@ void GlobalSection::writeBody() {
     bool useExtendedConst = false;
     uint32_t globalIdx;
     int64_t offset;
-    if (ctx.arg.extendedConst && ctx.isPic) {
+    if (ctx.arg.extendedConst && ctx.isPic &&
+        (sym->flags & WASM_SYMBOL_ABSOLUTE) == 0) {
       if (auto *d = dyn_cast<DefinedData>(sym)) {
         if (!sym->isTLS()) {
           globalIdx = ctx.sym.memoryBase->getGlobalIndex();



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