diff --git a/reference/opt/shaders-msl/frag/array-lut-no-loop-variable.frag b/reference/opt/shaders-msl/frag/array-lut-no-loop-variable.frag
index 1b81bce8..60868acd 100644
--- a/reference/opt/shaders-msl/frag/array-lut-no-loop-variable.frag
+++ b/reference/opt/shaders-msl/frag/array-lut-no-loop-variable.frag
@@ -1,5 +1,3 @@
-#pragma clang diagnostic ignored "-Wmissing-prototypes"
-
 #include <metal_stdlib>
 #include <simd/simd.h>
 
@@ -12,20 +10,6 @@ struct main0_out
     float4 FragColor [[color(0)]];
 };
 
-// Implementation of an array copy function to cover GLSL's ability to copy an array via assignment.
-template<typename T, uint N>
-void spvArrayCopy(thread T (&dst)[N], thread const T (&src)[N])
-{
-    for (uint i = 0; i < N; dst[i] = src[i], i++);
-}
-
-// An overload for constant arrays.
-template<typename T, uint N>
-void spvArrayCopyConstant(thread T (&dst)[N], constant T (&src)[N])
-{
-    for (uint i = 0; i < N; dst[i] = src[i], i++);
-}
-
 fragment main0_out main0()
 {
     main0_out out = {};
diff --git a/reference/shaders-msl/asm/frag/op-constant-null.asm.frag b/reference/shaders-msl/asm/frag/op-constant-null.asm.frag
index 9abe5169..670cb5f3 100644
--- a/reference/shaders-msl/asm/frag/op-constant-null.asm.frag
+++ b/reference/shaders-msl/asm/frag/op-constant-null.asm.frag
@@ -1,5 +1,3 @@
-#pragma clang diagnostic ignored "-Wmissing-prototypes"
-
 #include <metal_stdlib>
 #include <simd/simd.h>
 
@@ -18,20 +16,6 @@ struct main0_out
     float FragColor [[color(0)]];
 };
 
-// Implementation of an array copy function to cover GLSL's ability to copy an array via assignment.
-template<typename T, uint N>
-void spvArrayCopy(thread T (&dst)[N], thread const T (&src)[N])
-{
-    for (uint i = 0; i < N; dst[i] = src[i], i++);
-}
-
-// An overload for constant arrays.
-template<typename T, uint N>
-void spvArrayCopyConstant(thread T (&dst)[N], constant T (&src)[N])
-{
-    for (uint i = 0; i < N; dst[i] = src[i], i++);
-}
-
 fragment main0_out main0()
 {
     main0_out out = {};
diff --git a/reference/shaders-msl/frag/array-lut-no-loop-variable.frag b/reference/shaders-msl/frag/array-lut-no-loop-variable.frag
index 48a37902..37f83aae 100644
--- a/reference/shaders-msl/frag/array-lut-no-loop-variable.frag
+++ b/reference/shaders-msl/frag/array-lut-no-loop-variable.frag
@@ -1,5 +1,3 @@
-#pragma clang diagnostic ignored "-Wmissing-prototypes"
-
 #include <metal_stdlib>
 #include <simd/simd.h>
 
@@ -12,20 +10,6 @@ struct main0_out
     float4 FragColor [[color(0)]];
 };
 
-// Implementation of an array copy function to cover GLSL's ability to copy an array via assignment.
-template<typename T, uint N>
-void spvArrayCopy(thread T (&dst)[N], thread const T (&src)[N])
-{
-    for (uint i = 0; i < N; dst[i] = src[i], i++);
-}
-
-// An overload for constant arrays.
-template<typename T, uint N>
-void spvArrayCopyConstant(thread T (&dst)[N], constant T (&src)[N])
-{
-    for (uint i = 0; i < N; dst[i] = src[i], i++);
-}
-
 fragment main0_out main0()
 {
     main0_out out = {};
diff --git a/spirv_msl.cpp b/spirv_msl.cpp
index ae3db4f3..d30f9d77 100644
--- a/spirv_msl.cpp
+++ b/spirv_msl.cpp
@@ -4078,6 +4078,7 @@ CompilerMSL::SPVFuncImpl CompilerMSL::OpCodePreprocessor::get_spv_func_impl(Op o
 	{
 		// Get the result type of the RHS. Since this is run as a pre-processing stage,
 		// we must extract the result type directly from the Instruction, rather than the ID.
+		uint32_t id_lhs = args[0];
 		uint32_t id_rhs = args[1];
 
 		const SPIRType *type = nullptr;
@@ -4094,7 +4095,13 @@ CompilerMSL::SPVFuncImpl CompilerMSL::OpCodePreprocessor::get_spv_func_impl(Op o
 				type = &compiler.get<SPIRType>(tid);
 		}
 
-		if (type && compiler.is_array(*type))
+		auto *var = compiler.maybe_get<SPIRVariable>(id_lhs);
+
+		// Are we simply assigning to a statically assigned variable which takes a constant?
+		// Don't bother emitting this function.
+		bool static_expression_lhs =
+		    var && var->storage == StorageClassFunction && var->statically_assigned && var->remapped_variable;
+		if (type && compiler.is_array(*type) && !static_expression_lhs)
 			return SPVFuncImplArrayCopy;
 
 		break;