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--- a/deps/v8/src/compiler/backend/instruction-selector.cc
+++ b/deps/v8/src/compiler/backend/instruction-selector.cc
@@ -2808,7 +2808,7 @@
switch (call_descriptor->kind()) {
case CallDescriptor::kCallAddress: {
int misc_field = static_cast<int>(call_descriptor->ParameterCount());
-#if defined(_AIX)
+#if ABI_USES_FUNCTION_DESCRIPTORS
// Highest misc_field bit is used on AIX to indicate if a CFunction call
// has function descriptor or not.
if (!call_descriptor->NoFunctionDescriptor()) {
--- a/deps/v8/src/compiler/backend/ppc/code-generator-ppc.cc
+++ b/deps/v8/src/compiler/backend/ppc/code-generator-ppc.cc
@@ -1039,7 +1039,7 @@
linkage()->GetIncomingDescriptor()->IsWasmCapiFunction();
int offset = (FLAG_enable_embedded_constant_pool ? 20 : 23) * kInstrSize;
-#if defined(_AIX)
+#if ABI_USES_FUNCTION_DESCRIPTORS
// AIX/PPC64BE Linux uses a function descriptor
int kNumParametersMask = kHasFunctionDescriptorBitMask - 1;
num_parameters = kNumParametersMask & misc_field;
--- a/deps/v8/src/execution/simulator.h
+++ b/deps/v8/src/execution/simulator.h
@@ -128,7 +128,7 @@
#if defined(V8_TARGET_OS_WIN) && !defined(V8_OS_WIN)
FATAL("Generated code execution not possible during cross-compilation.");
#endif // defined(V8_TARGET_OS_WIN) && !defined(V8_OS_WIN)
-#if V8_OS_AIX
+#if ABI_USES_FUNCTION_DESCRIPTORS
// AIX ABI requires function descriptors (FD). Artificially create a pseudo
// FD to ensure correct dispatch to generated code. The 'volatile'
// declaration is required to avoid the compiler from not observing the
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