diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCISelLowering.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp index 00dcb0db6b4..38e77bb0192 100644 --- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp @@ -5467,6 +5467,11 @@ SDValue PPCTargetLowering::LowerCall_64SVR4( // arguments that will be in registers. unsigned NumGPRsUsed = 0, NumFPRsUsed = 0, NumVRsUsed = 0; + // Avoid allocating parameter area for fastcc functions if all the arguments + // can be passed in the registers. + if (CallConv == CallingConv::Fast) + HasParameterArea = false; + // Add up all the space actually used. for (unsigned i = 0; i != NumOps; ++i) { ISD::ArgFlagsTy Flags = Outs[i].Flags; @@ -5477,9 +5482,11 @@ SDValue PPCTargetLowering::LowerCall_64SVR4( continue; if (CallConv == CallingConv::Fast) { - if (Flags.isByVal()) + if (Flags.isByVal()) { NumGPRsUsed += (Flags.getByValSize()+7)/8; - else + if (NumGPRsUsed > NumGPRs) + HasParameterArea = true; + } else { switch (ArgVT.getSimpleVT().SimpleTy) { default: llvm_unreachable("Unexpected ValueType for argument!"); case MVT::i1: @@ -5516,6 +5523,8 @@ SDValue PPCTargetLowering::LowerCall_64SVR4( continue; break; } + HasParameterArea = true; + } } /* Respect alignment of argument on the stack. */ |
