From: Anton Korobeynikov <asl@math.spbu.ru>
Date: Tue, 11 Nov 2008 20:21:14 +0000 (+0000)
Subject: Codegen support for fastcall & stdcall CC.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=f1c9c09e2e2220e4bbfb7e9d8adf9bf2c2406b80;p=clang

Codegen support for fastcall & stdcall CC.
Patch by Ilya Okonsky!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59080 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 3555ccd53a..c4877a6745 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -252,7 +252,10 @@ void CodeGenModule::SetFunctionAttributes(const Decl *D,
 
   // Set the appropriate calling convention for the Function.
   if (D->getAttr<FastCallAttr>())
-    F->setCallingConv(llvm::CallingConv::Fast);
+    F->setCallingConv(llvm::CallingConv::X86_FastCall);
+
+  if (D->getAttr<StdCallAttr>())
+    F->setCallingConv(llvm::CallingConv::X86_StdCall);
 }
 
 /// SetFunctionAttributesForDefinition - Set function attributes
diff --git a/test/CodeGen/stdcall-fastcall.c b/test/CodeGen/stdcall-fastcall.c
new file mode 100644
index 0000000000..a599405d27
--- /dev/null
+++ b/test/CodeGen/stdcall-fastcall.c
@@ -0,0 +1,17 @@
+// RUN: clang -emit-llvm < %s | grep 'fastcallcc' | count 4
+// RUN: clang -emit-llvm < %s | grep 'stdcallcc' | count 4
+
+void __attribute__((fastcall)) f1(void);
+void __attribute__((stdcall)) f2(void);
+void __attribute__((fastcall)) f3(void) {
+  f1();
+}
+void __attribute__((stdcall)) f4(void) {
+  f2();
+}
+
+int main(void) {
+    f3(); f4();
+    return 0;
+}
+