From 180f89537ac8a53025b528540746debde034bf62 Mon Sep 17 00:00:00 2001 From: Hal Finkel Date: Sun, 18 Jan 2015 14:31:10 +0000 Subject: [PATCH] [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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226401 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/PowerPC/PPCISelLowering.cpp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp index 58eddd7e910..2001e427705 100644 --- a/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/lib/Target/PowerPC/PPCISelLowering.cpp @@ -2858,6 +2858,9 @@ PPCTargetLowering::LowerFormalArguments_64SVR4( 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 @@ PPCTargetLowering::LowerCall_64SVR4(SDValue Chain, SDValue Callee, 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.