[llvm] [NFC][WebAssembly] Add Fast-ISel test for load-ext (PR #181480)

[via llvm-commits]

https://github.com/ParkHanbum updated https://github.com/llvm/llvm-project/pull/181480

>From 2f1555badaffb78e3d27f886eeaab3b63d2c3175 Mon Sep 17 00:00:00 2001
From: hanbeom <kese111 at gmail.com>
Date: Sun, 15 Feb 2026 17:12:50 +0900
Subject: [PATCH 1/2] [WebAssembly] Fix null Subtarget crash for addrspace(1)
 globals

If Subtarget is null during global emission, it is now retrieved
from TargetMachine to prevent crashes caused by empty VTs in
wasmSymbolSetType.

Fixed: #181527
---
 .../Target/WebAssembly/WebAssemblyAsmPrinter.cpp | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
index 1cacdb04fa74d..a088b67a5eedc 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
@@ -197,16 +197,22 @@ void WebAssemblyAsmPrinter::emitGlobalVariable(const GlobalVariable *GV) {
   if (!Sym->getType()) {
     SmallVector<MVT, 1> VTs;
     Type *GlobalVT = GV->getValueType();
-    if (Subtarget) {
+    if (!Subtarget) {
       // Subtarget is only set when a function is defined, because
       // each function can declare a different subtarget. For example,
       // on ARM a compilation unit might have a function on ARM and
       // another on Thumb. Therefore only if Subtarget is non-null we
-      // can actually calculate the legal VTs.
-      const WebAssemblyTargetLowering &TLI = *Subtarget->getTargetLowering();
-      computeLegalValueVTs(TLI, GV->getParent()->getContext(),
-                           GV->getDataLayout(), GlobalVT, VTs);
+      // can actually calculate the legal VTs. Therefore, if Subtarget
+      // is null, we retrieve the default subtarget from TargetMachine
+      // to calculate the legal VTs.
+      auto &WasmTM = static_cast<const WebAssemblyTargetMachine &>(TM);
+      Subtarget = WasmTM.getSubtargetImpl();
     }
+
+    const WebAssemblyTargetLowering &TLI = *Subtarget->getTargetLowering();
+    computeLegalValueVTs(TLI, GV->getParent()->getContext(),
+                         GV->getDataLayout(), GlobalVT, VTs);
+
     WebAssembly::wasmSymbolSetType(Sym, GlobalVT, VTs);
   }
 

>From 2debc6a01f29b6e57650af6eb0a79d5efa24a4fd Mon Sep 17 00:00:00 2001
From: hanbeom <kese111 at gmail.com>
Date: Sun, 15 Feb 2026 17:35:38 +0900
Subject: [PATCH 2/2] [WebAssembly] Emit initializer values for
 globals(addrspace1)

This patch ensures that global variables in WebAssembly-specific
address spaces (addrspace 1) have their initializer values
correctly emitted.
---
 llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
index a088b67a5eedc..007835beb0937 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
@@ -218,12 +218,11 @@ void WebAssemblyAsmPrinter::emitGlobalVariable(const GlobalVariable *GV) {
 
   emitVisibility(Sym, GV->getVisibility(), !GV->isDeclaration());
   emitSymbolType(Sym);
-  if (GV->hasInitializer()) {
+  if (const Constant *Init = GV->getInitializer()) {
     assert(getSymbolPreferLocal(*GV) == Sym);
     emitLinkage(GV, Sym);
     OutStreamer->emitLabel(Sym);
-    // TODO: Actually emit the initializer value.  Otherwise the global has the
-    // default value for its type (0, ref.null, etc).
+    emitGlobalConstant(GV->getDataLayout(), Init);
     OutStreamer->addBlankLine();
   }
 }