Add default calling convention support for regcall.
Added support for regcall as default calling convention. Also added code to
exclude main when applying default calling conventions.
Patch-By: eandrews
Differential Revision: https://reviews.llvm.org/D39210
llvm-svn: 317268
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 2c0d99b..692b20b 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2310,12 +2310,12 @@
// Check for MS default calling conventions being specified.
if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) {
LangOptions::DefaultCallingConvention DefaultCC =
- llvm::StringSwitch<LangOptions::DefaultCallingConvention>(
- A->getValue())
+ llvm::StringSwitch<LangOptions::DefaultCallingConvention>(A->getValue())
.Case("cdecl", LangOptions::DCC_CDecl)
.Case("fastcall", LangOptions::DCC_FastCall)
.Case("stdcall", LangOptions::DCC_StdCall)
.Case("vectorcall", LangOptions::DCC_VectorCall)
+ .Case("regcall", LangOptions::DCC_RegCall)
.Default(LangOptions::DCC_None);
if (DefaultCC == LangOptions::DCC_None)
Diags.Report(diag::err_drv_invalid_value)
@@ -2326,7 +2326,8 @@
bool emitError = (DefaultCC == LangOptions::DCC_FastCall ||
DefaultCC == LangOptions::DCC_StdCall) &&
Arch != llvm::Triple::x86;
- emitError |= DefaultCC == LangOptions::DCC_VectorCall &&
+ emitError |= (DefaultCC == LangOptions::DCC_VectorCall ||
+ DefaultCC == LangOptions::DCC_RegCall) &&
!(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64);
if (emitError)
Diags.Report(diag::err_drv_argument_not_allowed_with)