[wasm][liftoff] Implement write barrier for global.set on arm platforms

R=ulan@chromium.org, thibaudm@chromium.org

Bug: v8:7581
Change-Id: Ie41f09339a1f5c022bd74fb3140ca66f40cc4476
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2412185Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69974}

src/wasm/baseline/arm/liftoff-assembler-arm.h

@@ -5,6 +5,7 @@
 #ifndef V8_WASM_BASELINE_ARM_LIFTOFF_ASSEMBLER_ARM_H_
 #define V8_WASM_BASELINE_ARM_LIFTOFF_ASSEMBLER_ARM_H_
 
+#include "src/heap/memory-chunk.h"
 #include "src/wasm/baseline/liftoff-assembler.h"
 #include "src/wasm/baseline/liftoff-register.h"
 
@@ -663,7 +664,23 @@ void LiftoffAssembler::StoreTaggedPointer(Register dst_addr,
                                           int32_t offset_imm,
                                           LiftoffRegister src,
                                           LiftoffRegList pinned) {
-  bailout(kRefTypes, "GlobalSet");
+  STATIC_ASSERT(kTaggedSize == kInt32Size);
+  // Store the value.
+  MemOperand dst_op(dst_addr, offset_imm);
+  str(src.gp(), dst_op);
+  // The write barrier.
+  Label write_barrier;
+  Label exit;
+  CheckPageFlag(dst_addr, MemoryChunk::kPointersFromHereAreInterestingMask, ne,
+                &write_barrier);
+  b(&exit);
+  bind(&write_barrier);
+  JumpIfSmi(src.gp(), &exit);
+  CheckPageFlag(src.gp(), MemoryChunk::kPointersToHereAreInterestingMask, eq,
+                &exit);
+  CallRecordWriteStub(dst_addr, Operand(offset_imm), EMIT_REMEMBERED_SET,
+                      kSaveFPRegs, wasm::WasmCode::kRecordWrite);
+  bind(&exit);
 }
 
 void LiftoffAssembler::Load(LiftoffRegister dst, Register src_addr,

src/wasm/baseline/arm64/liftoff-assembler-arm64.h

@@ -5,6 +5,7 @@
 #ifndef V8_WASM_BASELINE_ARM64_LIFTOFF_ASSEMBLER_ARM64_H_
 #define V8_WASM_BASELINE_ARM64_LIFTOFF_ASSEMBLER_ARM64_H_
 
+#include "src/heap/memory-chunk.h"
 #include "src/wasm/baseline/liftoff-assembler.h"
 
 namespace v8 {
@@ -342,7 +343,25 @@ void LiftoffAssembler::StoreTaggedPointer(Register dst_addr,
                                           int32_t offset_imm,
                                           LiftoffRegister src,
                                           LiftoffRegList pinned) {
-  bailout(kRefTypes, "GlobalSet");
+  // Store the value.
+  MemOperand dst_op(dst_addr, offset_imm);
+  StoreTaggedField(src.gp(), dst_op);
+  // The write barrier.
+  Label write_barrier;
+  Label exit;
+  CheckPageFlag(dst_addr, MemoryChunk::kPointersFromHereAreInterestingMask, eq,
+                &write_barrier);
+  b(&exit);
+  bind(&write_barrier);
+  JumpIfSmi(src.gp(), &exit);
+  if (COMPRESS_POINTERS_BOOL) {
+    DecompressTaggedPointer(src.gp(), src.gp());
+  }
+  CheckPageFlag(src.gp(), MemoryChunk::kPointersToHereAreInterestingMask, ne,
+                &exit);
+  CallRecordWriteStub(dst_addr, Operand(offset_imm), EMIT_REMEMBERED_SET,
+                      kSaveFPRegs, wasm::WasmCode::kRecordWrite);
+  bind(&exit);
 }
 
 void LiftoffAssembler::Load(LiftoffRegister dst, Register src_addr,