diff --git a/tests/in/math-functions.wgsl b/tests/in/math-functions.wgsl
index 38e9acee94..a2e097a04d 100644
--- a/tests/in/math-functions.wgsl
+++ b/tests/in/math-functions.wgsl
@@ -7,4 +7,5 @@ fn main() {
     let c = degrees(v);
     let d = radians(v);
     let const_dot = dot(vec2<i32>(), vec2<i32>());
+    let first_leading_bit_abs = firstLeadingBit(abs(0u));
 }
diff --git a/tests/out/glsl/math-functions.main.Vertex.glsl b/tests/out/glsl/math-functions.main.Vertex.glsl
index 02a94ea69d..8d72868299 100644
--- a/tests/out/glsl/math-functions.main.Vertex.glsl
+++ b/tests/out/glsl/math-functions.main.Vertex.glsl
@@ -11,5 +11,6 @@ void main() {
     vec4 c = degrees(v);
     vec4 d = radians(v);
     int const_dot = ( + ivec2(0, 0).x * ivec2(0, 0).x + ivec2(0, 0).y * ivec2(0, 0).y);
+    uint first_leading_bit_abs = uint(findMSB(uint(abs(int(0u)))));
 }
 
diff --git a/tests/out/hlsl/math-functions.hlsl b/tests/out/hlsl/math-functions.hlsl
index b17a32cf41..179cfee66c 100644
--- a/tests/out/hlsl/math-functions.hlsl
+++ b/tests/out/hlsl/math-functions.hlsl
@@ -7,4 +7,5 @@ void main()
     float4 c = degrees(v);
     float4 d = radians(v);
     int const_dot = dot(int2(0, 0), int2(0, 0));
+    uint first_leading_bit_abs = firstbithigh(abs(0u));
 }
diff --git a/tests/out/msl/math-functions.msl b/tests/out/msl/math-functions.msl
index e08894037e..87de8418ce 100644
--- a/tests/out/msl/math-functions.msl
+++ b/tests/out/msl/math-functions.msl
@@ -14,4 +14,5 @@ vertex void main_(
     metal::float4 c = ((v) * 57.295779513082322865);
     metal::float4 d = ((v) * 0.017453292519943295474);
     int const_dot = ( + const_type.x * const_type.x + const_type.y * const_type.y);
+    uint first_leading_bit_abs = (((metal::clz(metal::abs(0u)) + 1) % 33) - 1);
 }
diff --git a/tests/out/spv/math-functions.spvasm b/tests/out/spv/math-functions.spvasm
index 03b4a04234..07a16f754c 100644
--- a/tests/out/spv/math-functions.spvasm
+++ b/tests/out/spv/math-functions.spvasm
@@ -1,38 +1,42 @@
 ; SPIR-V
 ; Version: 1.1
 ; Generator: rspirv
-; Bound: 29
+; Bound: 33
 OpCapability Shader
 %1 = OpExtInstImport "GLSL.std.450"
 OpMemoryModel Logical GLSL450
-OpEntryPoint Vertex %11 "main"
+OpEntryPoint Vertex %13 "main"
 %2 = OpTypeVoid
 %4 = OpTypeFloat 32
 %3 = OpConstant  %4  1.0
 %5 = OpConstant  %4  0.0
 %7 = OpTypeInt 32 1
 %6 = OpConstant  %7  0
-%8 = OpTypeVector %7 2
-%9 = OpConstantComposite  %8  %6 %6
-%12 = OpTypeFunction %2
-%14 = OpTypeVector %4 4
-%21 = OpConstantNull  %7
-%11 = OpFunction  %2  None %12
-%10 = OpLabel
-OpBranch %13
-%13 = OpLabel
-%15 = OpCompositeConstruct  %14  %5 %5 %5 %5
-%16 = OpExtInst  %4  %1 Degrees %3
-%17 = OpExtInst  %4  %1 Radians %3
-%18 = OpExtInst  %14  %1 Degrees %15
-%19 = OpExtInst  %14  %1 Radians %15
-%22 = OpCompositeExtract  %7  %9 0
-%23 = OpCompositeExtract  %7  %9 0
-%24 = OpIMul  %7  %22 %23
-%25 = OpIAdd  %7  %21 %24
-%26 = OpCompositeExtract  %7  %9 1
-%27 = OpCompositeExtract  %7  %9 1
-%28 = OpIMul  %7  %26 %27
-%20 = OpIAdd  %7  %25 %28
+%9 = OpTypeInt 32 0
+%8 = OpConstant  %9  0
+%10 = OpTypeVector %7 2
+%11 = OpConstantComposite  %10  %6 %6
+%14 = OpTypeFunction %2
+%16 = OpTypeVector %4 4
+%23 = OpConstantNull  %7
+%13 = OpFunction  %2  None %14
+%12 = OpLabel
+OpBranch %15
+%15 = OpLabel
+%17 = OpCompositeConstruct  %16  %5 %5 %5 %5
+%18 = OpExtInst  %4  %1 Degrees %3
+%19 = OpExtInst  %4  %1 Radians %3
+%20 = OpExtInst  %16  %1 Degrees %17
+%21 = OpExtInst  %16  %1 Radians %17
+%24 = OpCompositeExtract  %7  %11 0
+%25 = OpCompositeExtract  %7  %11 0
+%26 = OpIMul  %7  %24 %25
+%27 = OpIAdd  %7  %23 %26
+%28 = OpCompositeExtract  %7  %11 1
+%29 = OpCompositeExtract  %7  %11 1
+%30 = OpIMul  %7  %28 %29
+%22 = OpIAdd  %7  %27 %30
+%31 = OpCopyObject  %9  %8
+%32 = OpExtInst  %9  %1 FindUMsb %31
 OpReturn
 OpFunctionEnd
\ No newline at end of file
diff --git a/tests/out/wgsl/math-functions.wgsl b/tests/out/wgsl/math-functions.wgsl
index 2be33d5647..9543168794 100644
--- a/tests/out/wgsl/math-functions.wgsl
+++ b/tests/out/wgsl/math-functions.wgsl
@@ -6,4 +6,5 @@ fn main() {
     let c = degrees(v);
     let d = radians(v);
     let const_dot = dot(vec2<i32>(0, 0), vec2<i32>(0, 0));
+    let first_leading_bit_abs = firstLeadingBit(abs(0u));
 }