add support, testcases, and dox for the new GHC calling
convention. Patch by David Terei!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98212 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index cdb579c..3c087bd 100644
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -294,13 +294,20 @@
const unsigned *
X86RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
bool callsEHReturn = false;
+ bool ghcCall = false;
if (MF) {
const MachineFrameInfo *MFI = MF->getFrameInfo();
const MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
callsEHReturn = (MMI ? MMI->callsEHReturn() : false);
+ const Function *F = MF->getFunction();
+ ghcCall = (F ? F->getCallingConv() == CallingConv::GHC : false);
}
+ static const unsigned GhcCalleeSavedRegs[] = {
+ 0
+ };
+
static const unsigned CalleeSavedRegs32Bit[] = {
X86::ESI, X86::EDI, X86::EBX, X86::EBP, 0
};
@@ -326,7 +333,9 @@
X86::XMM14, X86::XMM15, 0
};
- if (Is64Bit) {
+ if (ghcCall) {
+ return GhcCalleeSavedRegs;
+ } else if (Is64Bit) {
if (IsWin64)
return CalleeSavedRegsWin64;
else