[clang] Alias cc modifier to c (#127719)
https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html#GenericOperandmodifiers
provides the `c` and `cc` modifiers. GCC 15 introduces the `cc` modifier
which does the same as `c`. This patch lets Clang handle this for
compatibility.
diff --git a/clang/test/AST/cc-modifier.cpp b/clang/test/AST/cc-modifier.cpp
new file mode 100644
index 0000000..24eb105
--- /dev/null
+++ b/clang/test/AST/cc-modifier.cpp
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu %s -verify
+// expected-no-diagnostics
+
+void func();
+void func2();
+
+bool func3() {
+ __asm__("%cc0 = %c1" : : "X"(func), "X"(func2));
+ return func2 == func;
+}
