[PowerPC] Add some FIXMEs for fastcc and FPR <-> GPR moves
So we don't forget, once we support FPR <-> GPR moves on the P8, we'll likely
want to re-visit this part of the calling convention.
llvm-svn: 226401
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 58eddd7..2001e42 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -2858,6 +2858,9 @@
ArgVal = DAG.getCopyFromReg(Chain, dl, VReg, ObjectVT);
++FPR_idx;
} else if (GPR_idx != Num_GPR_Regs && CallConv != CallingConv::Fast) {
+ // FIXME: We may want to re-enable this for CallingConv::Fast on the P8
+ // once we support fp <-> gpr moves.
+
// This can only ever happen in the presence of f32 array types,
// since otherwise we never run out of FPRs before running out
// of GPRs.
@@ -4629,6 +4632,9 @@
if (!NeedGPROrStack)
;
else if (GPR_idx != NumGPRs && CallConv != CallingConv::Fast) {
+ // FIXME: We may want to re-enable this for CallingConv::Fast on the P8
+ // once we support fp <-> gpr moves.
+
// In the non-vararg case, this can only ever happen in the
// presence of f32 array types, since otherwise we never run
// out of FPRs before running out of GPRs.