Add builtin rules

Author: lucic71

rules/builtin/ir_unsafe.json

@@ -170,5 +170,69 @@
     "return_type": {
       "type": "u64"
     }
+  },
+  "f7": {
+    "body": [
+      {
+        "method_call": {
+          "receiver": [
+            {
+              "placeholder": {
+                "arg": 0,
+                "access": "read"
+              }
+            }
+          ],
+          "body": [
+            {
+              "text": ".trailing_zeros()"
+            }
+          ]
+        }
+      },
+      {
+        "text": " as i32"
+      }
+    ],
+    "params": {
+      "a0": {
+        "type": "u64"
+      }
+    },
+    "return_type": {
+      "type": "i32"
+    }
+  },
+  "f8": {
+    "body": [
+      {
+        "method_call": {
+          "receiver": [
+            {
+              "placeholder": {
+                "arg": 0,
+                "access": "read"
+              }
+            }
+          ],
+          "body": [
+            {
+              "text": ".count_ones()"
+            }
+          ]
+        }
+      },
+      {
+        "text": " as i32"
+      }
+    ],
+    "params": {
+      "a0": {
+        "type": "u64"
+      }
+    },
+    "return_type": {
+      "type": "i32"
+    }
   }
 }

rules/builtin/src.cpp

@@ -19,3 +19,5 @@ unsigned short f4(unsigned short x) { return __builtin_bswap16(x); }
 unsigned int f5(unsigned int x) { return __builtin_bswap32(x); }
 unsigned long long f6(unsigned long long x) { return __builtin_bswap64(x); }
 #endif
+int f7(unsigned long x) { return __builtin_ctzl(x); }
+int f8(unsigned long x) { return __builtin_popcountl(x); }

rules/builtin/tgt_unsafe.rs

@@ -19,3 +19,9 @@ unsafe fn f5(a0: u32) -> u32 {
 unsafe fn f6(a0: u64) -> u64 {
     a0.swap_bytes()
 }
+unsafe fn f7(a0: u64) -> i32 {
+    a0.trailing_zeros() as i32
+}
+unsafe fn f8(a0: u64) -> i32 {
+    a0.count_ones() as i32
+}