add test

Author: Jinjie-Huang

bolt/test/X86/dwarf4-dwp.test

@@ -0,0 +1,41 @@
+# REQUIRES: system-linux
+
+# RUN: rm -rf %t && mkdir -p %t && cd %t
+# RUN: split-file %s %t
+# RUN: %clangxx -g -gdwarf-4 -gsplit-dwarf %t/main.cpp %t/callee.cpp -o main.exe
+# RUN: llvm-dwp -e %t/main.exe -o %t/main.exe.dwp
+# RUN: llvm-bolt %t/main.exe -o %t/main.exe.bolt -update-debug-sections  2>&1 | FileCheck %s
+
+# CHECK-NOT: Assertion
+
+
+#--- main.cpp
+int hotFunction(int x);
+
+int main(int argc, char **argv) {
+    int sum = 0;
+    for (int i = 0; i < 50000000; ++i) { // 让运行时间更久
+        sum += hotFunction(i);
+    }
+    if (sum)
+        return 0;
+    else
+        return 1;
+}
+
+#--- callee.cpp
+int hotFunction(int x) {
+    if ((x & 1) == 0) {
+        x = x * 3 + 1;
+        if (x % 5 == 0) {
+            x += 7;
+        }
+    } else {
+        x = x * x;
+        if (x % 3 == 0) {
+            x -= 4;
+        }
+    }
+    return x;
+}
+