diff --git a/resources/sksl/shared/Matrices.sksl b/resources/sksl/shared/Matrices.sksl
index 8380c830a7..e8905acb5f 100644
--- a/resources/sksl/shared/Matrices.sksl
+++ b/resources/sksl/shared/Matrices.sksl
@@ -1,4 +1,6 @@
 uniform half4 colorGreen, colorRed;
+uniform half2x2 testMatrix2x2;
+uniform half3x3 testMatrix3x3;
 
 bool test_float() {
     float3 v1 = float3x3(1) * float3(2);
@@ -42,6 +44,15 @@ bool test_half() {
     return true;
 }
 
-half4 main() {
-    return test_float() && test_half() ? colorGreen : colorRed;
+bool test_equality() {
+    bool ok = true;
+    ok = ok && testMatrix2x2 == half2x2(1,2,3,4);
+    ok = ok && testMatrix3x3 == half3x3(1,2,3,4,5,6,7,8,9);
+    ok = ok && testMatrix2x2 != half2x2(100);
+    ok = ok && testMatrix3x3 != half3x3(9,8,7,6,5,4,3,2,1);
+    return ok;
+}
+
+half4 main() {
+    return test_float() && test_half() && test_equality() ? colorGreen : colorRed;
 }
diff --git a/src/sksl/SkSLMetalCodeGenerator.cpp b/src/sksl/SkSLMetalCodeGenerator.cpp
index cd67ac9beb..7c04f7b740 100644
--- a/src/sksl/SkSLMetalCodeGenerator.cpp
+++ b/src/sksl/SkSLMetalCodeGenerator.cpp
@@ -1186,7 +1186,7 @@ void MetalCodeGenerator::writeSwizzle(const Swizzle& swizzle) {
 
 void MetalCodeGenerator::writeMatrixTimesEqualHelper(const Type& left, const Type& right,
                                                      const Type& result) {
-    String key = "TimesEqual" + this->typeName(left) + this->typeName(right);
+    String key = "TimesEqual" + this->typeName(left) + ":" + this->typeName(right);
 
     auto [iter, wasInserted] = fHelpers.insert(key);
     if (wasInserted) {
@@ -1199,6 +1199,50 @@ void MetalCodeGenerator::writeMatrixTimesEqualHelper(const Type& left, const Typ
     }
 }
 
+void MetalCodeGenerator::writeMatrixEqualityHelper(const Type& left, const Type& right) {
+    SkASSERTF(left.rows() == right.rows() && left.columns() == right.columns(), "left=%s, right=%s",
+              left.description().c_str(), right.description().c_str());
+
+    String key = "Equality" + this->typeName(left) + ":" + this->typeName(right);
+
+    auto [iter, wasInserted] = fHelpers.insert(key);
+    if (wasInserted) {
+        fExtraFunctions.printf(
+                "thread bool operator==(const %s left, const %s right) {\n"
+                "    return",
+                this->typeName(left).c_str(), this->typeName(right).c_str());
+
+        for (int index=0; index<left.columns(); ++index) {
+            fExtraFunctions.printf("%s all(left[%d] == right[%d])",
+                                   index == 0 ? "" : " &&", index, index);
+        }
+        fExtraFunctions.printf(";\n"
+                               "}\n");
+    }
+}
+
+void MetalCodeGenerator::writeMatrixInequalityHelper(const Type& left, const Type& right) {
+    SkASSERTF(left.rows() == right.rows() && left.columns() == right.columns(), "left=%s, right=%s",
+              left.description().c_str(), right.description().c_str());
+
+    String key = "Inequality" + this->typeName(left) + ":" + this->typeName(right);
+
+    auto [iter, wasInserted] = fHelpers.insert(key);
+    if (wasInserted) {
+        fExtraFunctions.printf(
+                "thread bool operator!=(const %s left, const %s right) {\n"
+                "    return",
+                this->typeName(left).c_str(), this->typeName(right).c_str());
+
+        for (int index=0; index<left.columns(); ++index) {
+            fExtraFunctions.printf("%s any(left[%d] != right[%d])",
+                                   index == 0 ? "" : " ||", index, index);
+        }
+        fExtraFunctions.printf(";\n"
+                               "}\n");
+    }
+}
+
 void MetalCodeGenerator::writeBinaryExpression(const BinaryExpression& b,
                                                Precedence parentPrecedence) {
     const Expression& left = *b.left();
@@ -1227,8 +1271,14 @@ void MetalCodeGenerator::writeBinaryExpression(const BinaryExpression& b,
     if (needParens) {
         this->write("(");
     }
-    if (op == Token::Kind::TK_STAREQ && leftType.isMatrix() && rightType.isMatrix()) {
-        this->writeMatrixTimesEqualHelper(leftType, rightType, b.type());
+    if (leftType.isMatrix() && rightType.isMatrix()) {
+        if (op == Token::Kind::TK_STAREQ) {
+            this->writeMatrixTimesEqualHelper(leftType, rightType, b.type());
+        } else if (op == Token::Kind::TK_EQEQ) {
+            this->writeMatrixEqualityHelper(leftType, rightType);
+        } else if (op == Token::Kind::TK_NEQ) {
+            this->writeMatrixInequalityHelper(leftType, rightType);
+        }
     }
     this->writeExpression(left, precedence);
     if (op != Token::Kind::TK_EQ && Operators::IsAssignment(op) &&
diff --git a/src/sksl/SkSLMetalCodeGenerator.h b/src/sksl/SkSLMetalCodeGenerator.h
index a8110abd2e..d446807f5b 100644
--- a/src/sksl/SkSLMetalCodeGenerator.h
+++ b/src/sksl/SkSLMetalCodeGenerator.h
@@ -210,8 +210,13 @@ protected:
     void assembleMatrixFromExpressions(const ExpressionArray& args, int rows, int columns);
 
     void writeMatrixCompMult();
+
     void writeMatrixTimesEqualHelper(const Type& left, const Type& right, const Type& result);
 
+    void writeMatrixEqualityHelper(const Type& left, const Type& right);
+
+    void writeMatrixInequalityHelper(const Type& left, const Type& right);
+
     void writeArgumentList(const ExpressionArray& arguments);
 
     void writeSimpleIntrinsic(const FunctionCall& c);
diff --git a/tests/SkSLTest.cpp b/tests/SkSLTest.cpp
index e083fc081c..4c98b499b0 100644
--- a/tests/SkSLTest.cpp
+++ b/tests/SkSLTest.cpp
@@ -59,6 +59,11 @@ static void test_one_permutation(skiatest::Reporter* r,
     set_uniform(&builder, "colorBlue",        SkV4{0, 0, 1, 1});
     set_uniform(&builder, "colorWhite",       SkV4{1, 1, 1, 1});
     set_uniform(&builder, "testInputs",       SkV4{-1.25, 0, 0.75, 2.25});
+    set_uniform(&builder, "testMatrix2x2",    std::array<float,4>{1, 2,
+                                                                  3, 4});
+    set_uniform(&builder, "testMatrix3x3",    std::array<float,9>{1, 2, 3,
+                                                                  4, 5, 6,
+                                                                  7, 8, 9});
     set_uniform(&builder, "unknownInput",     1.0f);
 
     sk_sp<SkShader> shader = builder.makeShader(/*localMatrix=*/nullptr, /*isOpaque=*/true);
diff --git a/tests/sksl/shared/ComplexDelete.metal b/tests/sksl/shared/ComplexDelete.metal
index 83e84d6e57..ac831065d9 100644
--- a/tests/sksl/shared/ComplexDelete.metal
+++ b/tests/sksl/shared/ComplexDelete.metal
@@ -13,6 +13,9 @@ struct Globals {
     texture2d<float> s;
     sampler sSmplr;
 };
+thread bool operator!=(const float4x4 left, const float4x4 right) {
+    return any(left[0] != right[0]) || any(left[1] != right[1]) || any(left[2] != right[2]) || any(left[3] != right[3]);
+}
 
 
 fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], texture2d<float> s[[texture(0)]], sampler sSmplr[[sampler(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
diff --git a/tests/sksl/shared/Matrices.asm.frag b/tests/sksl/shared/Matrices.asm.frag
index 10f4354b96..d8d36c7a3e 100644
--- a/tests/sksl/shared/Matrices.asm.frag
+++ b/tests/sksl/shared/Matrices.asm.frag
@@ -8,6 +8,8 @@ OpName %sk_Clockwise "sk_Clockwise"
 OpName %_UniformBuffer "_UniformBuffer"
 OpMemberName %_UniformBuffer 0 "colorGreen"
 OpMemberName %_UniformBuffer 1 "colorRed"
+OpMemberName %_UniformBuffer 2 "testMatrix2x2"
+OpMemberName %_UniformBuffer 3 "testMatrix3x3"
 OpName %_entrypoint "_entrypoint"
 OpName %main "main"
 OpName %_1_m3 "_1_m3"
@@ -18,6 +20,7 @@ OpName %_6_m3 "_6_m3"
 OpName %_7_m5 "_7_m5"
 OpName %_8_m6 "_8_m6"
 OpName %_9_m11 "_9_m11"
+OpName %_11_ok "_11_ok"
 OpDecorate %sk_FragColor RelaxedPrecision
 OpDecorate %sk_FragColor Location 0
 OpDecorate %sk_FragColor Index 0
@@ -27,44 +30,77 @@ OpMemberDecorate %_UniformBuffer 0 Offset 0
 OpMemberDecorate %_UniformBuffer 0 RelaxedPrecision
 OpMemberDecorate %_UniformBuffer 1 Offset 16
 OpMemberDecorate %_UniformBuffer 1 RelaxedPrecision
+OpMemberDecorate %_UniformBuffer 2 Offset 32
+OpMemberDecorate %_UniformBuffer 2 ColMajor
+OpMemberDecorate %_UniformBuffer 2 MatrixStride 16
+OpMemberDecorate %_UniformBuffer 2 RelaxedPrecision
+OpMemberDecorate %_UniformBuffer 3 Offset 64
+OpMemberDecorate %_UniformBuffer 3 ColMajor
+OpMemberDecorate %_UniformBuffer 3 MatrixStride 16
+OpMemberDecorate %_UniformBuffer 3 RelaxedPrecision
 OpDecorate %_UniformBuffer Block
 OpDecorate %10 Binding 0
 OpDecorate %10 DescriptorSet 0
-OpDecorate %93 RelaxedPrecision
-OpDecorate %94 RelaxedPrecision
-OpDecorate %92 RelaxedPrecision
 OpDecorate %95 RelaxedPrecision
+OpDecorate %96 RelaxedPrecision
+OpDecorate %94 RelaxedPrecision
 OpDecorate %97 RelaxedPrecision
+OpDecorate %99 RelaxedPrecision
+OpDecorate %100 RelaxedPrecision
 OpDecorate %98 RelaxedPrecision
-OpDecorate %96 RelaxedPrecision
-OpDecorate %96 RelaxedPrecision
-OpDecorate %103 RelaxedPrecision
-OpDecorate %104 RelaxedPrecision
-OpDecorate %102 RelaxedPrecision
+OpDecorate %98 RelaxedPrecision
+OpDecorate %105 RelaxedPrecision
 OpDecorate %106 RelaxedPrecision
-OpDecorate %109 RelaxedPrecision
-OpDecorate %110 RelaxedPrecision
+OpDecorate %104 RelaxedPrecision
 OpDecorate %108 RelaxedPrecision
-OpDecorate %108 RelaxedPrecision
-OpDecorate %113 RelaxedPrecision
-OpDecorate %114 RelaxedPrecision
+OpDecorate %111 RelaxedPrecision
 OpDecorate %112 RelaxedPrecision
+OpDecorate %110 RelaxedPrecision
+OpDecorate %110 RelaxedPrecision
 OpDecorate %115 RelaxedPrecision
 OpDecorate %116 RelaxedPrecision
-OpDecorate %126 RelaxedPrecision
-OpDecorate %127 RelaxedPrecision
+OpDecorate %114 RelaxedPrecision
+OpDecorate %117 RelaxedPrecision
+OpDecorate %118 RelaxedPrecision
 OpDecorate %128 RelaxedPrecision
 OpDecorate %129 RelaxedPrecision
-OpDecorate %125 RelaxedPrecision
-OpDecorate %125 RelaxedPrecision
 OpDecorate %130 RelaxedPrecision
+OpDecorate %131 RelaxedPrecision
+OpDecorate %127 RelaxedPrecision
+OpDecorate %127 RelaxedPrecision
 OpDecorate %132 RelaxedPrecision
-OpDecorate %133 RelaxedPrecision
 OpDecorate %134 RelaxedPrecision
 OpDecorate %135 RelaxedPrecision
-OpDecorate %131 RelaxedPrecision
-OpDecorate %131 RelaxedPrecision
-OpDecorate %151 RelaxedPrecision
+OpDecorate %136 RelaxedPrecision
+OpDecorate %137 RelaxedPrecision
+OpDecorate %133 RelaxedPrecision
+OpDecorate %133 RelaxedPrecision
+OpDecorate %157 RelaxedPrecision
+OpDecorate %159 RelaxedPrecision
+OpDecorate %160 RelaxedPrecision
+OpDecorate %158 RelaxedPrecision
+OpDecorate %172 RelaxedPrecision
+OpDecorate %178 RelaxedPrecision
+OpDecorate %185 RelaxedPrecision
+OpDecorate %186 RelaxedPrecision
+OpDecorate %187 RelaxedPrecision
+OpDecorate %184 RelaxedPrecision
+OpDecorate %204 RelaxedPrecision
+OpDecorate %208 RelaxedPrecision
+OpDecorate %211 RelaxedPrecision
+OpDecorate %212 RelaxedPrecision
+OpDecorate %210 RelaxedPrecision
+OpDecorate %210 RelaxedPrecision
+OpDecorate %223 RelaxedPrecision
+OpDecorate %227 RelaxedPrecision
+OpDecorate %229 RelaxedPrecision
+OpDecorate %230 RelaxedPrecision
+OpDecorate %231 RelaxedPrecision
+OpDecorate %228 RelaxedPrecision
+OpDecorate %247 RelaxedPrecision
+OpDecorate %255 RelaxedPrecision
+OpDecorate %258 RelaxedPrecision
+OpDecorate %259 RelaxedPrecision
 %float = OpTypeFloat 32
 %v4float = OpTypeVector %float 4
 %_ptr_Output_v4float = OpTypePointer Output %v4float
@@ -72,14 +108,16 @@ OpDecorate %151 RelaxedPrecision
 %bool = OpTypeBool
 %_ptr_Input_bool = OpTypePointer Input %bool
 %sk_Clockwise = OpVariable %_ptr_Input_bool Input
-%_UniformBuffer = OpTypeStruct %v4float %v4float
+%v2float = OpTypeVector %float 2
+%mat2v2float = OpTypeMatrix %v2float 2
+%v3float = OpTypeVector %float 3
+%mat3v3float = OpTypeMatrix %v3float 3
+%_UniformBuffer = OpTypeStruct %v4float %v4float %mat2v2float %mat3v3float
 %_ptr_Uniform__UniformBuffer = OpTypePointer Uniform %_UniformBuffer
 %10 = OpVariable %_ptr_Uniform__UniformBuffer Uniform
 %void = OpTypeVoid
-%15 = OpTypeFunction %void
-%18 = OpTypeFunction %v4float
-%v2float = OpTypeVector %float 2
-%mat2v2float = OpTypeMatrix %v2float 2
+%19 = OpTypeFunction %void
+%22 = OpTypeFunction %v4float
 %_ptr_Function_mat2v2float = OpTypePointer Function %mat2v2float
 %float_1 = OpConstant %float 1
 %float_2 = OpConstant %float 2
@@ -91,148 +129,274 @@ OpDecorate %151 RelaxedPrecision
 %_ptr_Function_v2float = OpTypePointer Function %v2float
 %mat4v4float = OpTypeMatrix %v4float 4
 %_ptr_Function_mat4v4float = OpTypePointer Function %mat4v4float
+%_ptr_Function_bool = OpTypePointer Function %bool
+%true = OpConstantTrue %bool
+%_ptr_Uniform_mat2v2float = OpTypePointer Uniform %mat2v2float
+%int_2 = OpConstant %int 2
+%v2bool = OpTypeVector %bool 2
+%false = OpConstantFalse %bool
+%_ptr_Uniform_mat3v3float = OpTypePointer Uniform %mat3v3float
+%int_3 = OpConstant %int 3
+%float_5 = OpConstant %float 5
+%float_6 = OpConstant %float 6
+%float_7 = OpConstant %float 7
+%float_8 = OpConstant %float 8
+%float_9 = OpConstant %float 9
+%v3bool = OpTypeVector %bool 3
+%float_100 = OpConstant %float 100
+%_ptr_Function_v4float = OpTypePointer Function %v4float
 %_ptr_Uniform_v4float = OpTypePointer Uniform %v4float
-%_entrypoint = OpFunction %void None %15
-%16 = OpLabel
-%17 = OpFunctionCall %v4float %main
-OpStore %sk_FragColor %17
+%int_1 = OpConstant %int 1
+%_entrypoint = OpFunction %void None %19
+%20 = OpLabel
+%21 = OpFunctionCall %v4float %main
+OpStore %sk_FragColor %21
 OpReturn
 OpFunctionEnd
-%main = OpFunction %v4float None %18
-%19 = OpLabel
+%main = OpFunction %v4float None %22
+%23 = OpLabel
 %_1_m3 = OpVariable %_ptr_Function_mat2v2float Function
 %_2_m5 = OpVariable %_ptr_Function_mat2v2float Function
-%38 = OpVariable %_ptr_Function_mat2v2float Function
+%40 = OpVariable %_ptr_Function_mat2v2float Function
 %_3_m6 = OpVariable %_ptr_Function_mat2v2float Function
 %_4_m11 = OpVariable %_ptr_Function_mat4v4float Function
 %_6_m3 = OpVariable %_ptr_Function_mat2v2float Function
 %_7_m5 = OpVariable %_ptr_Function_mat2v2float Function
-%101 = OpVariable %_ptr_Function_mat2v2float Function
+%103 = OpVariable %_ptr_Function_mat2v2float Function
 %_8_m6 = OpVariable %_ptr_Function_mat2v2float Function
 %_9_m11 = OpVariable %_ptr_Function_mat4v4float Function
-%29 = OpCompositeConstruct %v2float %float_1 %float_2
-%30 = OpCompositeConstruct %v2float %float_3 %float_4
-%28 = OpCompositeConstruct %mat2v2float %29 %30
-OpStore %_1_m3 %28
-%31 = OpLoad %mat2v2float %_1_m3
-%34 = OpCompositeConstruct %v2float %float_1 %float_0
-%35 = OpCompositeConstruct %v2float %float_0 %float_1
-%32 = OpCompositeConstruct %mat2v2float %34 %35
-%36 = OpMatrixTimesMatrix %mat2v2float %31 %32
-OpStore %_1_m3 %36
-%40 = OpCompositeConstruct %v2float %float_1 %float_2
-%41 = OpCompositeConstruct %v2float %float_3 %float_4
-%39 = OpCompositeConstruct %mat2v2float %40 %41
-OpStore %38 %39
-%44 = OpAccessChain %_ptr_Function_v2float %38 %int_0
-%46 = OpLoad %v2float %44
-%47 = OpCompositeExtract %float %46 0
-%49 = OpCompositeConstruct %v2float %47 %float_0
-%50 = OpCompositeConstruct %v2float %float_0 %47
-%48 = OpCompositeConstruct %mat2v2float %49 %50
-OpStore %_2_m5 %48
-%53 = OpCompositeConstruct %v2float %float_1 %float_2
-%54 = OpCompositeConstruct %v2float %float_3 %float_4
-%52 = OpCompositeConstruct %mat2v2float %53 %54
-OpStore %_3_m6 %52
-%55 = OpLoad %mat2v2float %_3_m6
-%56 = OpLoad %mat2v2float %_2_m5
-%57 = OpCompositeExtract %v2float %55 0
-%58 = OpCompositeExtract %v2float %56 0
-%59 = OpFAdd %v2float %57 %58
-%60 = OpCompositeExtract %v2float %55 1
-%61 = OpCompositeExtract %v2float %56 1
-%62 = OpFAdd %v2float %60 %61
-%63 = OpCompositeConstruct %mat2v2float %59 %62
-OpStore %_3_m6 %63
-%68 = OpCompositeConstruct %v4float %float_2 %float_0 %float_0 %float_0
-%69 = OpCompositeConstruct %v4float %float_0 %float_2 %float_0 %float_0
-%70 = OpCompositeConstruct %v4float %float_0 %float_0 %float_2 %float_0
-%71 = OpCompositeConstruct %v4float %float_0 %float_0 %float_0 %float_2
-%67 = OpCompositeConstruct %mat4v4float %68 %69 %70 %71
-OpStore %_4_m11 %67
-%72 = OpLoad %mat4v4float %_4_m11
-%74 = OpCompositeConstruct %v4float %float_1 %float_0 %float_0 %float_0
-%75 = OpCompositeConstruct %v4float %float_0 %float_1 %float_0 %float_0
-%76 = OpCompositeConstruct %v4float %float_0 %float_0 %float_1 %float_0
-%77 = OpCompositeConstruct %v4float %float_0 %float_0 %float_0 %float_1
-%73 = OpCompositeConstruct %mat4v4float %74 %75 %76 %77
-%78 = OpCompositeExtract %v4float %72 0
-%79 = OpCompositeExtract %v4float %73 0
-%80 = OpFSub %v4float %78 %79
-%81 = OpCompositeExtract %v4float %72 1
-%82 = OpCompositeExtract %v4float %73 1
-%83 = OpFSub %v4float %81 %82
-%84 = OpCompositeExtract %v4float %72 2
-%85 = OpCompositeExtract %v4float %73 2
-%86 = OpFSub %v4float %84 %85
-%87 = OpCompositeExtract %v4float %72 3
-%88 = OpCompositeExtract %v4float %73 3
-%89 = OpFSub %v4float %87 %88
-%90 = OpCompositeConstruct %mat4v4float %80 %83 %86 %89
-OpStore %_4_m11 %90
-%93 = OpCompositeConstruct %v2float %float_1 %float_2
-%94 = OpCompositeConstruct %v2float %float_3 %float_4
-%92 = OpCompositeConstruct %mat2v2float %93 %94
-OpStore %_6_m3 %92
-%95 = OpLoad %mat2v2float %_6_m3
-%97 = OpCompositeConstruct %v2float %float_1 %float_0
-%98 = OpCompositeConstruct %v2float %float_0 %float_1
-%96 = OpCompositeConstruct %mat2v2float %97 %98
-%99 = OpMatrixTimesMatrix %mat2v2float %95 %96
-OpStore %_6_m3 %99
-%103 = OpCompositeConstruct %v2float %float_1 %float_2
-%104 = OpCompositeConstruct %v2float %float_3 %float_4
-%102 = OpCompositeConstruct %mat2v2float %103 %104
-OpStore %101 %102
-%105 = OpAccessChain %_ptr_Function_v2float %101 %int_0
-%106 = OpLoad %v2float %105
-%107 = OpCompositeExtract %float %106 0
-%109 = OpCompositeConstruct %v2float %107 %float_0
-%110 = OpCompositeConstruct %v2float %float_0 %107
-%108 = OpCompositeConstruct %mat2v2float %109 %110
-OpStore %_7_m5 %108
-%113 = OpCompositeConstruct %v2float %float_1 %float_2
-%114 = OpCompositeConstruct %v2float %float_3 %float_4
-%112 = OpCompositeConstruct %mat2v2float %113 %114
-OpStore %_8_m6 %112
-%115 = OpLoad %mat2v2float %_8_m6
-%116 = OpLoad %mat2v2float %_7_m5
-%117 = OpCompositeExtract %v2float %115 0
-%118 = OpCompositeExtract %v2float %116 0
-%119 = OpFAdd %v2float %117 %118
-%120 = OpCompositeExtract %v2float %115 1
-%121 = OpCompositeExtract %v2float %116 1
-%122 = OpFAdd %v2float %120 %121
-%123 = OpCompositeConstruct %mat2v2float %119 %122
-OpStore %_8_m6 %123
-%126 = OpCompositeConstruct %v4float %float_2 %float_0 %float_0 %float_0
-%127 = OpCompositeConstruct %v4float %float_0 %float_2 %float_0 %float_0
-%128 = OpCompositeConstruct %v4float %float_0 %float_0 %float_2 %float_0
-%129 = OpCompositeConstruct %v4float %float_0 %float_0 %float_0 %float_2
-%125 = OpCompositeConstruct %mat4v4float %126 %127 %128 %129
-OpStore %_9_m11 %125
-%130 = OpLoad %mat4v4float %_9_m11
-%132 = OpCompositeConstruct %v4float %float_1 %float_0 %float_0 %float_0
-%133 = OpCompositeConstruct %v4float %float_0 %float_1 %float_0 %float_0
-%134 = OpCompositeConstruct %v4float %float_0 %float_0 %float_1 %float_0
-%135 = OpCompositeConstruct %v4float %float_0 %float_0 %float_0 %float_1
-%131 = OpCompositeConstruct %mat4v4float %132 %133 %134 %135
-%136 = OpCompositeExtract %v4float %130 0
-%137 = OpCompositeExtract %v4float %131 0
-%138 = OpFSub %v4float %136 %137
-%139 = OpCompositeExtract %v4float %130 1
-%140 = OpCompositeExtract %v4float %131 1
-%141 = OpFSub %v4float %139 %140
-%142 = OpCompositeExtract %v4float %130 2
-%143 = OpCompositeExtract %v4float %131 2
-%144 = OpFSub %v4float %142 %143
-%145 = OpCompositeExtract %v4float %130 3
-%146 = OpCompositeExtract %v4float %131 3
-%147 = OpFSub %v4float %145 %146
-%148 = OpCompositeConstruct %mat4v4float %138 %141 %144 %147
-OpStore %_9_m11 %148
-%149 = OpAccessChain %_ptr_Uniform_v4float %10 %int_0
-%151 = OpLoad %v4float %149
-OpReturnValue %151
+%_11_ok = OpVariable %_ptr_Function_bool Function
+%248 = OpVariable %_ptr_Function_v4float Function
+%31 = OpCompositeConstruct %v2float %float_1 %float_2
+%32 = OpCompositeConstruct %v2float %float_3 %float_4
+%30 = OpCompositeConstruct %mat2v2float %31 %32
+OpStore %_1_m3 %30
+%33 = OpLoad %mat2v2float %_1_m3
+%36 = OpCompositeConstruct %v2float %float_1 %float_0
+%37 = OpCompositeConstruct %v2float %float_0 %float_1
+%34 = OpCompositeConstruct %mat2v2float %36 %37
+%38 = OpMatrixTimesMatrix %mat2v2float %33 %34
+OpStore %_1_m3 %38
+%42 = OpCompositeConstruct %v2float %float_1 %float_2
+%43 = OpCompositeConstruct %v2float %float_3 %float_4
+%41 = OpCompositeConstruct %mat2v2float %42 %43
+OpStore %40 %41
+%46 = OpAccessChain %_ptr_Function_v2float %40 %int_0
+%48 = OpLoad %v2float %46
+%49 = OpCompositeExtract %float %48 0
+%51 = OpCompositeConstruct %v2float %49 %float_0
+%52 = OpCompositeConstruct %v2float %float_0 %49
+%50 = OpCompositeConstruct %mat2v2float %51 %52
+OpStore %_2_m5 %50
+%55 = OpCompositeConstruct %v2float %float_1 %float_2
+%56 = OpCompositeConstruct %v2float %float_3 %float_4
+%54 = OpCompositeConstruct %mat2v2float %55 %56
+OpStore %_3_m6 %54
+%57 = OpLoad %mat2v2float %_3_m6
+%58 = OpLoad %mat2v2float %_2_m5
+%59 = OpCompositeExtract %v2float %57 0
+%60 = OpCompositeExtract %v2float %58 0
+%61 = OpFAdd %v2float %59 %60
+%62 = OpCompositeExtract %v2float %57 1
+%63 = OpCompositeExtract %v2float %58 1
+%64 = OpFAdd %v2float %62 %63
+%65 = OpCompositeConstruct %mat2v2float %61 %64
+OpStore %_3_m6 %65
+%70 = OpCompositeConstruct %v4float %float_2 %float_0 %float_0 %float_0
+%71 = OpCompositeConstruct %v4float %float_0 %float_2 %float_0 %float_0
+%72 = OpCompositeConstruct %v4float %float_0 %float_0 %float_2 %float_0
+%73 = OpCompositeConstruct %v4float %float_0 %float_0 %float_0 %float_2
+%69 = OpCompositeConstruct %mat4v4float %70 %71 %72 %73
+OpStore %_4_m11 %69
+%74 = OpLoad %mat4v4float %_4_m11
+%76 = OpCompositeConstruct %v4float %float_1 %float_0 %float_0 %float_0
+%77 = OpCompositeConstruct %v4float %float_0 %float_1 %float_0 %float_0
+%78 = OpCompositeConstruct %v4float %float_0 %float_0 %float_1 %float_0
+%79 = OpCompositeConstruct %v4float %float_0 %float_0 %float_0 %float_1
+%75 = OpCompositeConstruct %mat4v4float %76 %77 %78 %79
+%80 = OpCompositeExtract %v4float %74 0
+%81 = OpCompositeExtract %v4float %75 0
+%82 = OpFSub %v4float %80 %81
+%83 = OpCompositeExtract %v4float %74 1
+%84 = OpCompositeExtract %v4float %75 1
+%85 = OpFSub %v4float %83 %84
+%86 = OpCompositeExtract %v4float %74 2
+%87 = OpCompositeExtract %v4float %75 2
+%88 = OpFSub %v4float %86 %87
+%89 = OpCompositeExtract %v4float %74 3
+%90 = OpCompositeExtract %v4float %75 3
+%91 = OpFSub %v4float %89 %90
+%92 = OpCompositeConstruct %mat4v4float %82 %85 %88 %91
+OpStore %_4_m11 %92
+%95 = OpCompositeConstruct %v2float %float_1 %float_2
+%96 = OpCompositeConstruct %v2float %float_3 %float_4
+%94 = OpCompositeConstruct %mat2v2float %95 %96
+OpStore %_6_m3 %94
+%97 = OpLoad %mat2v2float %_6_m3
+%99 = OpCompositeConstruct %v2float %float_1 %float_0
+%100 = OpCompositeConstruct %v2float %float_0 %float_1
+%98 = OpCompositeConstruct %mat2v2float %99 %100
+%101 = OpMatrixTimesMatrix %mat2v2float %97 %98
+OpStore %_6_m3 %101
+%105 = OpCompositeConstruct %v2float %float_1 %float_2
+%106 = OpCompositeConstruct %v2float %float_3 %float_4
+%104 = OpCompositeConstruct %mat2v2float %105 %106
+OpStore %103 %104
+%107 = OpAccessChain %_ptr_Function_v2float %103 %int_0
+%108 = OpLoad %v2float %107
+%109 = OpCompositeExtract %float %108 0
+%111 = OpCompositeConstruct %v2float %109 %float_0
+%112 = OpCompositeConstruct %v2float %float_0 %109
+%110 = OpCompositeConstruct %mat2v2float %111 %112
+OpStore %_7_m5 %110
+%115 = OpCompositeConstruct %v2float %float_1 %float_2
+%116 = OpCompositeConstruct %v2float %float_3 %float_4
+%114 = OpCompositeConstruct %mat2v2float %115 %116
+OpStore %_8_m6 %114
+%117 = OpLoad %mat2v2float %_8_m6
+%118 = OpLoad %mat2v2float %_7_m5
+%119 = OpCompositeExtract %v2float %117 0
+%120 = OpCompositeExtract %v2float %118 0
+%121 = OpFAdd %v2float %119 %120
+%122 = OpCompositeExtract %v2float %117 1
+%123 = OpCompositeExtract %v2float %118 1
+%124 = OpFAdd %v2float %122 %123
+%125 = OpCompositeConstruct %mat2v2float %121 %124
+OpStore %_8_m6 %125
+%128 = OpCompositeConstruct %v4float %float_2 %float_0 %float_0 %float_0
+%129 = OpCompositeConstruct %v4float %float_0 %float_2 %float_0 %float_0
+%130 = OpCompositeConstruct %v4float %float_0 %float_0 %float_2 %float_0
+%131 = OpCompositeConstruct %v4float %float_0 %float_0 %float_0 %float_2
+%127 = OpCompositeConstruct %mat4v4float %128 %129 %130 %131
+OpStore %_9_m11 %127
+%132 = OpLoad %mat4v4float %_9_m11
+%134 = OpCompositeConstruct %v4float %float_1 %float_0 %float_0 %float_0
+%135 = OpCompositeConstruct %v4float %float_0 %float_1 %float_0 %float_0
+%136 = OpCompositeConstruct %v4float %float_0 %float_0 %float_1 %float_0
+%137 = OpCompositeConstruct %v4float %float_0 %float_0 %float_0 %float_1
+%133 = OpCompositeConstruct %mat4v4float %134 %135 %136 %137
+%138 = OpCompositeExtract %v4float %132 0
+%139 = OpCompositeExtract %v4float %133 0
+%140 = OpFSub %v4float %138 %139
+%141 = OpCompositeExtract %v4float %132 1
+%142 = OpCompositeExtract %v4float %133 1
+%143 = OpFSub %v4float %141 %142
+%144 = OpCompositeExtract %v4float %132 2
+%145 = OpCompositeExtract %v4float %133 2
+%146 = OpFSub %v4float %144 %145
+%147 = OpCompositeExtract %v4float %132 3
+%148 = OpCompositeExtract %v4float %133 3
+%149 = OpFSub %v4float %147 %148
+%150 = OpCompositeConstruct %mat4v4float %140 %143 %146 %149
+OpStore %_9_m11 %150
+OpStore %_11_ok %true
+%154 = OpAccessChain %_ptr_Uniform_mat2v2float %10 %int_2
+%157 = OpLoad %mat2v2float %154
+%159 = OpCompositeConstruct %v2float %float_1 %float_2
+%160 = OpCompositeConstruct %v2float %float_3 %float_4
+%158 = OpCompositeConstruct %mat2v2float %159 %160
+%162 = OpCompositeExtract %v2float %157 0
+%163 = OpCompositeExtract %v2float %158 0
+%164 = OpFOrdEqual %v2bool %162 %163
+%165 = OpAll %bool %164
+%166 = OpCompositeExtract %v2float %157 1
+%167 = OpCompositeExtract %v2float %158 1
+%168 = OpFOrdEqual %v2bool %166 %167
+%169 = OpAll %bool %168
+%170 = OpLogicalAnd %bool %165 %169
+OpStore %_11_ok %170
+%172 = OpLoad %bool %_11_ok
+OpSelectionMerge %174 None
+OpBranchConditional %172 %173 %174
+%173 = OpLabel
+%175 = OpAccessChain %_ptr_Uniform_mat3v3float %10 %int_3
+%178 = OpLoad %mat3v3float %175
+%185 = OpCompositeConstruct %v3float %float_1 %float_2 %float_3
+%186 = OpCompositeConstruct %v3float %float_4 %float_5 %float_6
+%187 = OpCompositeConstruct %v3float %float_7 %float_8 %float_9
+%184 = OpCompositeConstruct %mat3v3float %185 %186 %187
+%189 = OpCompositeExtract %v3float %178 0
+%190 = OpCompositeExtract %v3float %184 0
+%191 = OpFOrdEqual %v3bool %189 %190
+%192 = OpAll %bool %191
+%193 = OpCompositeExtract %v3float %178 1
+%194 = OpCompositeExtract %v3float %184 1
+%195 = OpFOrdEqual %v3bool %193 %194
+%196 = OpAll %bool %195
+%197 = OpLogicalAnd %bool %192 %196
+%198 = OpCompositeExtract %v3float %178 2
+%199 = OpCompositeExtract %v3float %184 2
+%200 = OpFOrdEqual %v3bool %198 %199
+%201 = OpAll %bool %200
+%202 = OpLogicalAnd %bool %197 %201
+OpBranch %174
+%174 = OpLabel
+%203 = OpPhi %bool %false %23 %202 %173
+OpStore %_11_ok %203
+%204 = OpLoad %bool %_11_ok
+OpSelectionMerge %206 None
+OpBranchConditional %204 %205 %206
+%205 = OpLabel
+%207 = OpAccessChain %_ptr_Uniform_mat2v2float %10 %int_2
+%208 = OpLoad %mat2v2float %207
+%211 = OpCompositeConstruct %v2float %float_100 %float_0
+%212 = OpCompositeConstruct %v2float %float_0 %float_100
+%210 = OpCompositeConstruct %mat2v2float %211 %212
+%213 = OpCompositeExtract %v2float %208 0
+%214 = OpCompositeExtract %v2float %210 0
+%215 = OpFOrdNotEqual %v2bool %213 %214
+%216 = OpAny %bool %215
+%217 = OpCompositeExtract %v2float %208 1
+%218 = OpCompositeExtract %v2float %210 1
+%219 = OpFOrdNotEqual %v2bool %217 %218
+%220 = OpAny %bool %219
+%221 = OpLogicalOr %bool %216 %220
+OpBranch %206
+%206 = OpLabel
+%222 = OpPhi %bool %false %174 %221 %205
+OpStore %_11_ok %222
+%223 = OpLoad %bool %_11_ok
+OpSelectionMerge %225 None
+OpBranchConditional %223 %224 %225
+%224 = OpLabel
+%226 = OpAccessChain %_ptr_Uniform_mat3v3float %10 %int_3
+%227 = OpLoad %mat3v3float %226
+%229 = OpCompositeConstruct %v3float %float_9 %float_8 %float_7
+%230 = OpCompositeConstruct %v3float %float_6 %float_5 %float_4
+%231 = OpCompositeConstruct %v3float %float_3 %float_2 %float_1
+%228 = OpCompositeConstruct %mat3v3float %229 %230 %231
+%232 = OpCompositeExtract %v3float %227 0
+%233 = OpCompositeExtract %v3float %228 0
+%234 = OpFOrdNotEqual %v3bool %232 %233
+%235 = OpAny %bool %234
+%236 = OpCompositeExtract %v3float %227 1
+%237 = OpCompositeExtract %v3float %228 1
+%238 = OpFOrdNotEqual %v3bool %236 %237
+%239 = OpAny %bool %238
+%240 = OpLogicalOr %bool %235 %239
+%241 = OpCompositeExtract %v3float %227 2
+%242 = OpCompositeExtract %v3float %228 2
+%243 = OpFOrdNotEqual %v3bool %241 %242
+%244 = OpAny %bool %243
+%245 = OpLogicalOr %bool %240 %244
+OpBranch %225
+%225 = OpLabel
+%246 = OpPhi %bool %false %206 %245 %224
+OpStore %_11_ok %246
+%247 = OpLoad %bool %_11_ok
+OpSelectionMerge %252 None
+OpBranchConditional %247 %250 %251
+%250 = OpLabel
+%253 = OpAccessChain %_ptr_Uniform_v4float %10 %int_0
+%255 = OpLoad %v4float %253
+OpStore %248 %255
+OpBranch %252
+%251 = OpLabel
+%256 = OpAccessChain %_ptr_Uniform_v4float %10 %int_1
+%258 = OpLoad %v4float %256
+OpStore %248 %258
+OpBranch %252
+%252 = OpLabel
+%259 = OpLoad %v4float %248
+OpReturnValue %259
 OpFunctionEnd
diff --git a/tests/sksl/shared/Matrices.glsl b/tests/sksl/shared/Matrices.glsl
index 6411de093f..b9fa55901b 100644
--- a/tests/sksl/shared/Matrices.glsl
+++ b/tests/sksl/shared/Matrices.glsl
@@ -2,6 +2,8 @@
 out vec4 sk_FragColor;
 uniform vec4 colorGreen;
 uniform vec4 colorRed;
+uniform mat2 testMatrix2x2;
+uniform mat3 testMatrix3x3;
 vec4 main() {
     mat2 _1_m3 = mat2(1.0, 2.0, 3.0, 4.0);
     _1_m3 *= mat2(1.0);
@@ -17,7 +19,13 @@ vec4 main() {
     _8_m6 += _7_m5;
     mat4 _9_m11 = mat4(2.0);
     _9_m11 -= mat4(1.0);
-    return colorGreen;
+    bool _11_ok = true;
+    _11_ok = testMatrix2x2 == mat2(1.0, 2.0, 3.0, 4.0);
+    _11_ok = _11_ok && testMatrix3x3 == mat3(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0);
+    _11_ok = _11_ok && testMatrix2x2 != mat2(100.0);
+    _11_ok = _11_ok && testMatrix3x3 != mat3(9.0, 8.0, 7.0, 6.0, 5.0, 4.0, 3.0, 2.0, 1.0);
+    return _11_ok ? colorGreen : colorRed;
+
 
 
 }
diff --git a/tests/sksl/shared/Matrices.metal b/tests/sksl/shared/Matrices.metal
index 287a75098d..c1c07318e6 100644
--- a/tests/sksl/shared/Matrices.metal
+++ b/tests/sksl/shared/Matrices.metal
@@ -4,6 +4,8 @@ using namespace metal;
 struct Uniforms {
     float4 colorGreen;
     float4 colorRed;
+    float2x2 testMatrix2x2;
+    float3x3 testMatrix3x3;
 };
 struct Inputs {
 };
@@ -14,6 +16,20 @@ thread float2x2& operator*=(thread float2x2& left, thread const float2x2& right)
     left = left * right;
     return left;
 }
+thread bool operator==(const float2x2 left, const float2x2 right) {
+    return all(left[0] == right[0]) && all(left[1] == right[1]);
+}
+thread bool operator==(const float3x3 left, const float3x3 right) {
+    return all(left[0] == right[0]) && all(left[1] == right[1]) && all(left[2] == right[2]);
+}
+thread bool operator!=(const float2x2 left, const float2x2 right) {
+    return any(left[0] != right[0]) || any(left[1] != right[1]);
+}
+thread bool operator!=(const float3x3 left, const float3x3 right) {
+    return any(left[0] != right[0]) || any(left[1] != right[1]) || any(left[2] != right[2]);
+}
+
+
 
 
 fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
@@ -33,8 +49,14 @@ fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _unifo
     _8_m6 += _7_m5;
     float4x4 _9_m11 = float4x4(2.0);
     _9_m11 -= float4x4(1.0);
-    _out.sk_FragColor = _uniforms.colorGreen;
+    bool _11_ok = true;
+    _11_ok = _uniforms.testMatrix2x2 == float2x2(float2(1.0, 2.0), float2(3.0, 4.0));
+    _11_ok = _11_ok && _uniforms.testMatrix3x3 == float3x3(float3(1.0, 2.0, 3.0), float3(4.0, 5.0, 6.0), float3(7.0, 8.0, 9.0));
+    _11_ok = _11_ok && _uniforms.testMatrix2x2 != float2x2(100.0);
+    _11_ok = _11_ok && _uniforms.testMatrix3x3 != float3x3(float3(9.0, 8.0, 7.0), float3(6.0, 5.0, 4.0), float3(3.0, 2.0, 1.0));
+    _out.sk_FragColor = _11_ok ? _uniforms.colorGreen : _uniforms.colorRed;
     return _out;
 
 
+
 }