diff --git a/unittests/InstructionCountCI/FlagM/HotBlocks.json b/unittests/InstructionCountCI/FlagM/HotBlocks.json
new file mode 100644
index 000000000..eda773d42
--- /dev/null
+++ b/unittests/InstructionCountCI/FlagM/HotBlocks.json
@@ -0,0 +1,40 @@
+{
+  "Features": {
+    "Bitness": 64,
+    "EnabledHostFeatures": [
+      "FLAGM",
+      "FLAGM2"
+    ],
+    "DisabledHostFeatures": [
+      "SVE128",
+      "SVE256"
+    ]
+  },
+  "Instructions": {
+    "The Witcher 3": {
+      "ExpectedInstructionCount": 11,
+      "x86Insts": [
+        "mov eax, 0x1",
+        "lock xadd qword [rcx], rax",
+        "mov rdx, rax",
+        "and edx, 0x1f",
+        "inc rdx",
+        "shl rdx, 0x6",
+        "add rdx, rcx"
+      ],
+      "ExpectedArm64ASM": [
+        "mov w4, #0x1",
+        "ldaddal x4, x4, [x5]",
+        "mov x6, x4",
+        "and w6, w4, #0x1f",
+        "add x6, x6, #0x1 (1)",
+        "lsl x20, x6, #6",
+        "mov x6, x20",
+        "add x6, x20, x5",
+        "eor x27, x20, x5",
+        "mov x26, x6",
+        "cmn x20, x5"
+      ]
+    }
+  }
+}