[GlobalISel][CallLowering] Add support for splitting types according to calling conventions.
On AArch64, s128 types have to be split into s64 GPRs when passed as arguments.
This change adds the generic support in call lowering for dealing with multiple
registers, for incoming and outgoing args.
Support for splitting for return types not yet implemented.
Differential Revision: https://reviews.llvm.org/D66180
llvm-svn: 370822
diff --git a/llvm/lib/Target/X86/X86CallLowering.cpp b/llvm/lib/Target/X86/X86CallLowering.cpp
index d559b2e..1dddf78 100644
--- a/llvm/lib/Target/X86/X86CallLowering.cpp
+++ b/llvm/lib/Target/X86/X86CallLowering.cpp
@@ -155,8 +155,9 @@
bool assignArg(unsigned ValNo, MVT ValVT, MVT LocVT,
CCValAssign::LocInfo LocInfo,
- const CallLowering::ArgInfo &Info, CCState &State) override {
- bool Res = AssignFn(ValNo, ValVT, LocVT, LocInfo, Info.Flags, State);
+ const CallLowering::ArgInfo &Info, ISD::ArgFlagsTy Flags,
+ CCState &State) override {
+ bool Res = AssignFn(ValNo, ValVT, LocVT, LocInfo, Flags, State);
StackSize = State.getNextStackOffset();
static const MCPhysReg XMMArgRegs[] = {X86::XMM0, X86::XMM1, X86::XMM2,
@@ -405,7 +406,7 @@
for (const auto &OrigArg : Info.OrigArgs) {
// TODO: handle not simple cases.
- if (OrigArg.Flags.isByVal())
+ if (OrigArg.Flags[0].isByVal())
return false;
if (OrigArg.Regs.size() > 1)