diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCFrameLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCFrameLowering.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp b/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp index 201b2d162372..277d708013c7 100644 --- a/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp +++ b/llvm/lib/Target/PowerPC/PPCFrameLowering.cpp @@ -384,7 +384,10 @@ bool PPCFrameLowering::needsFP(const MachineFunction &MF) const { } void PPCFrameLowering::replaceFPWithRealFP(MachineFunction &MF) const { - bool is31 = needsFP(MF); + // When there is dynamic alloca in this function, we can not use the frame + // pointer X31/R31 for the frameaddress lowering. In this case, only X1/R1 + // always points to the backchain. + bool is31 = needsFP(MF) && !MF.getFrameInfo().hasVarSizedObjects(); unsigned FPReg = is31 ? PPC::R31 : PPC::R1; unsigned FP8Reg = is31 ? PPC::X31 : PPC::X1; |