diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMCallingConv.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMCallingConv.cpp | 65 |
1 files changed, 47 insertions, 18 deletions
diff --git a/llvm/lib/Target/ARM/ARMCallingConv.cpp b/llvm/lib/Target/ARM/ARMCallingConv.cpp index a47c59512592d..67c822a5b6ef7 100644 --- a/llvm/lib/Target/ARM/ARMCallingConv.cpp +++ b/llvm/lib/Target/ARM/ARMCallingConv.cpp @@ -32,9 +32,8 @@ static bool f64AssignAPCS(unsigned ValNo, MVT ValVT, MVT LocVT, return false; // Put the whole thing on the stack. - State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT, - State.AllocateStack(8, 4), - LocVT, LocInfo)); + State.addLoc(CCValAssign::getCustomMem( + ValNo, ValVT, State.AllocateStack(8, Align(4)), LocVT, LocInfo)); return true; } @@ -42,9 +41,8 @@ static bool f64AssignAPCS(unsigned ValNo, MVT ValVT, MVT LocVT, if (unsigned Reg = State.AllocateReg(RegList)) State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo)); else - State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT, - State.AllocateStack(4, 4), - LocVT, LocInfo)); + State.addLoc(CCValAssign::getCustomMem( + ValNo, ValVT, State.AllocateStack(4, Align(4)), LocVT, LocInfo)); return true; } @@ -81,9 +79,8 @@ static bool f64AssignAAPCS(unsigned ValNo, MVT ValVT, MVT LocVT, return false; // Put the whole thing on the stack. - State.addLoc(CCValAssign::getCustomMem(ValNo, ValVT, - State.AllocateStack(8, 8), - LocVT, LocInfo)); + State.addLoc(CCValAssign::getCustomMem( + ValNo, ValVT, State.AllocateStack(8, Align(8)), LocVT, LocInfo)); return true; } @@ -184,8 +181,8 @@ static bool CC_ARM_AAPCS_Custom_Aggregate(unsigned ValNo, MVT ValVT, // aggregate. Store the type's required alignment as extra info for later: in // the [N x i64] case all trace has been removed by the time we actually get // to do allocation. - PendingMembers.push_back(CCValAssign::getPending(ValNo, ValVT, LocVT, LocInfo, - ArgFlags.getOrigAlign())); + PendingMembers.push_back(CCValAssign::getPending( + ValNo, ValVT, LocVT, LocInfo, ArgFlags.getNonZeroOrigAlign().value())); if (!ArgFlags.isInConsecutiveRegsLast()) return true; @@ -193,8 +190,9 @@ static bool CC_ARM_AAPCS_Custom_Aggregate(unsigned ValNo, MVT ValVT, // Try to allocate a contiguous block of registers, each of the correct // size to hold one member. auto &DL = State.getMachineFunction().getDataLayout(); - unsigned StackAlign = DL.getStackAlignment().value(); - unsigned Align = std::min(PendingMembers[0].getExtraInfo(), StackAlign); + const Align StackAlign = DL.getStackAlignment(); + const Align FirstMemberAlign(PendingMembers[0].getExtraInfo()); + Align Alignment = std::min(FirstMemberAlign, StackAlign); ArrayRef<MCPhysReg> RegList; switch (LocVT.SimpleTy) { @@ -204,21 +202,24 @@ static bool CC_ARM_AAPCS_Custom_Aggregate(unsigned ValNo, MVT ValVT, // First consume all registers that would give an unaligned object. Whether // we go on stack or in regs, no-one will be using them in future. - unsigned RegAlign = alignTo(Align, 4) / 4; + unsigned RegAlign = alignTo(Alignment.value(), 4) / 4; while (RegIdx % RegAlign != 0 && RegIdx < RegList.size()) State.AllocateReg(RegList[RegIdx++]); break; } case MVT::f16: + case MVT::bf16: case MVT::f32: RegList = SRegList; break; case MVT::v4f16: + case MVT::v4bf16: case MVT::f64: RegList = DRegList; break; case MVT::v8f16: + case MVT::v8bf16: case MVT::v2f64: RegList = QRegList; break; @@ -247,7 +248,7 @@ static bool CC_ARM_AAPCS_Custom_Aggregate(unsigned ValNo, MVT ValVT, unsigned RegIdx = State.getFirstUnallocated(RegList); for (auto &It : PendingMembers) { if (RegIdx >= RegList.size()) - It.convertToMem(State.AllocateStack(Size, Size)); + It.convertToMem(State.AllocateStack(Size, Align(Size))); else It.convertToReg(State.AllocateReg(RegList[RegIdx++])); @@ -265,12 +266,12 @@ static bool CC_ARM_AAPCS_Custom_Aggregate(unsigned ValNo, MVT ValVT, // After the first item has been allocated, the rest are packed as tightly as // possible. (E.g. an incoming i64 would have starting Align of 8, but we'll // be allocating a bunch of i32 slots). - unsigned RestAlign = std::min(Align, Size); + const Align RestAlign = std::min(Alignment, Align(Size)); for (auto &It : PendingMembers) { - It.convertToMem(State.AllocateStack(Size, Align)); + It.convertToMem(State.AllocateStack(Size, Alignment)); State.addLoc(It); - Align = RestAlign; + Alignment = RestAlign; } // All pending members have now been allocated @@ -280,5 +281,33 @@ static bool CC_ARM_AAPCS_Custom_Aggregate(unsigned ValNo, MVT ValVT, return true; } +static bool CustomAssignInRegList(unsigned ValNo, MVT ValVT, MVT LocVT, + CCValAssign::LocInfo LocInfo, CCState &State, + ArrayRef<MCPhysReg> RegList) { + unsigned Reg = State.AllocateReg(RegList); + if (Reg) { + State.addLoc(CCValAssign::getCustomReg(ValNo, ValVT, Reg, LocVT, LocInfo)); + return true; + } + return false; +} + +static bool CC_ARM_AAPCS_Custom_f16(unsigned ValNo, MVT ValVT, MVT LocVT, + CCValAssign::LocInfo LocInfo, + ISD::ArgFlagsTy ArgFlags, CCState &State) { + // f16 arguments are extended to i32 and assigned to a register in [r0, r3] + return CustomAssignInRegList(ValNo, ValVT, MVT::i32, LocInfo, State, + RRegList); +} + +static bool CC_ARM_AAPCS_VFP_Custom_f16(unsigned ValNo, MVT ValVT, MVT LocVT, + CCValAssign::LocInfo LocInfo, + ISD::ArgFlagsTy ArgFlags, + CCState &State) { + // f16 arguments are extended to f32 and assigned to a register in [s0, s15] + return CustomAssignInRegList(ValNo, ValVT, MVT::f32, LocInfo, State, + SRegList); +} + // Include the table generated calling convention implementations. #include "ARMGenCallingConv.inc" |