[GlobalISel] Use the correct calling conv for calls
This commit adds a parameter that lets us pass in the calling convention
of the call to CallLowering::lowerCall. This allows us to handle
situations where the calling convetion of the callee is different from
that of the caller.
Differential Revision: https://reviews.llvm.org/D31039
llvm-svn: 298254
diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index af4747f..e26473d 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -114,11 +114,12 @@
Type *Ty = Size == 64 ? Type::getDoubleTy(Ctx) : Type::getFloatTy(Ctx);
auto &CLI = *MIRBuilder.getMF().getSubtarget().getCallLowering();
auto &TLI = *MIRBuilder.getMF().getSubtarget().getTargetLowering();
- const char *Name = TLI.getLibcallName(getRTLibDesc(MI.getOpcode(), Size));
+ auto Libcall = getRTLibDesc(MI.getOpcode(), Size);
+ const char *Name = TLI.getLibcallName(Libcall);
MIRBuilder.getMF().getFrameInfo().setHasCalls(true);
CLI.lowerCall(
- MIRBuilder, MachineOperand::CreateES(Name),
- {MI.getOperand(0).getReg(), Ty},
+ MIRBuilder, TLI.getLibcallCallingConv(Libcall),
+ MachineOperand::CreateES(Name), {MI.getOperand(0).getReg(), Ty},
{{MI.getOperand(1).getReg(), Ty}, {MI.getOperand(2).getReg(), Ty}});
MI.eraseFromParent();
return Legalized;