Handle llvm.x86.rdtsc

pcc · pcc · commit 9e2ec1312504 · 2025-11-06T15:38:28.000-08:00
diff --git a/filc/tests/rdtsc/manifest b/filc/tests/rdtsc/manifest
@@ -0,0 +1,2 @@
+return:
+  success
diff --git a/filc/tests/rdtsc/rdtsc.c b/filc/tests/rdtsc/rdtsc.c
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main()
+{
+    printf("TSC = %llu\n", __rdtsc());
+}
diff --git a/llvm/lib/Transforms/Instrumentation/FilPizlonator.cpp b/llvm/lib/Transforms/Instrumentation/FilPizlonator.cpp
@@ -6883,6 +6883,7 @@ class Pizlonator {
 
       case Intrinsic::x86_xgetbv:
       case Intrinsic::x86_sse2_pause:
+      case Intrinsic::x86_rdtsc:
         return true;
 
       case Intrinsic::returnaddress:
