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[Alignment][NFC] Use Align for TargetCallingConv::OrigAlign

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This patch replaces D69249.

This is patch is part of a series to introduce an Alignment type.
See this thread for context: http://lists.llvm.org/pipermail/llvm-dev/2019-July/133851.html
See this patch for the introduction of the type: https://reviews.llvm.org/D64790

Differential Revision: https://reviews.llvm.org/D82307
This commit is contained in:
Guillaume Chatelet 2020-06-25 13:21:07 +00:00
parent 5b9ce07a76
commit 2e7bba693e
8 changed files with 21 additions and 20 deletions
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8
llvm/include/llvm/CodeGen/TargetCallingConv.h
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@ -144,13 +144,17 @@ namespace ISD {
assert(getNonZeroByValAlign() == A && "bitfield overflow");
}
unsigned getOrigAlign() const {
LLVM_ATTRIBUTE_DEPRECATED(unsigned getOrigAlign() const,
"Use getNonZeroOrigAlign() instead") {
MaybeAlign A = decodeMaybeAlign(OrigAlign);
return A ? A->value() : 0;
}
Align getNonZeroOrigAlign() const {
return decodeMaybeAlign(OrigAlign).valueOrOne();
}
void setOrigAlign(Align A) {
OrigAlign = encode(A);
assert(getOrigAlign() == A.value() && "bitfield overflow");
assert(getNonZeroOrigAlign() == A && "bitfield overflow");
}
unsigned getByValSize() const { return ByValSize; }

2
llvm/lib/Target/AArch64/AArch64CallingConvention.cpp
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@ -42,7 +42,7 @@ static bool finishStackBlock(SmallVectorImpl<CCValAssign> &PendingMembers,
unsigned Size = LocVT.getSizeInBits() / 8;
const Align StackAlign =
State.getMachineFunction().getDataLayout().getStackAlignment();
const Align OrigAlign(ArgFlags.getOrigAlign());
const Align OrigAlign = ArgFlags.getNonZeroOrigAlign();
const Align Alignment = std::min(OrigAlign, StackAlign);
for (auto &It : PendingMembers) {

3
llvm/lib/Target/AArch64/AArch64CallingConvention.td
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@ -10,9 +10,6 @@
//
//===----------------------------------------------------------------------===//
/// CCIfAlign - Match of the original alignment of the arg
class CCIfAlign<string Align, CCAction A> :
CCIf<!strconcat("ArgFlags.getOrigAlign() == ", Align), A>;
/// CCIfBigEndian - Match only if we're in big endian mode.
class CCIfBigEndian<CCAction A> :
CCIf<"State.getMachineFunction().getDataLayout().isBigEndian()", A>;

4
llvm/lib/Target/ARM/ARMCallingConv.cpp
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@ -181,8 +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;

4
llvm/lib/Target/ARM/ARMCallingConv.td
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@ -10,7 +10,7 @@
/// CCIfAlign - Match of the original alignment of the arg
class CCIfAlign<string Align, CCAction A>:
CCIf<!strconcat("ArgFlags.getOrigAlign() == ", Align), A>;
CCIf<!strconcat("ArgFlags.getNonZeroOrigAlign() == ", Align), A>;
//===----------------------------------------------------------------------===//
// ARM APCS Calling Convention
@ -134,7 +134,7 @@ def CC_ARM_AAPCS_Common : CallingConv<[
// i64 is 8-aligned i32 here, so we may need to eat R1 as a pad register
// (and the same is true for f64 if VFP is not enabled)
CCIfType<[i32], CCIfAlign<"8", CCAssignToRegWithShadow<[R0, R2], [R0, R1]>>>,
CCIfType<[i32], CCIf<"ArgFlags.getOrigAlign() != 8",
CCIfType<[i32], CCIf<"ArgFlags.getNonZeroOrigAlign() != Align(8)",
CCAssignToReg<[R0, R1, R2, R3]>>>,
CCIfType<[i32], CCIfAlign<"8", CCAssignToStackWithShadow<4, 8, [R0, R1, R2, R3]>>>,

7
llvm/lib/Target/Mips/MipsISelLowering.cpp
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@ -2908,8 +2908,8 @@ static bool CC_MipsO32(unsigned ValNo, MVT ValVT, MVT LocVT,
// argument which is not f32 or f64.
bool AllocateFloatsInIntReg = State.isVarArg() || ValNo > 1 ||
State.getFirstUnallocated(F32Regs) != ValNo;
unsigned OrigAlign = ArgFlags.getOrigAlign();
bool isI64 = (ValVT == MVT::i32 && OrigAlign == 8);
Align OrigAlign = ArgFlags.getNonZeroOrigAlign();
bool isI64 = (ValVT == MVT::i32 && OrigAlign == Align(8));
bool isVectorFloat = MipsState->WasOriginalArgVectorFloat(ValNo);
// The MIPS vector ABI for floats passes them in a pair of registers
@ -2963,8 +2963,7 @@ static bool CC_MipsO32(unsigned ValNo, MVT ValVT, MVT LocVT,
llvm_unreachable("Cannot handle this ValVT.");
if (!Reg) {
unsigned Offset =
State.AllocateStack(ValVT.getStoreSize(), Align(OrigAlign));
unsigned Offset = State.AllocateStack(ValVT.getStoreSize(), OrigAlign);
State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
} else
State.addLoc(CCValAssign::getReg(ValNo, ValVT, Reg, LocVT, LocInfo));

7
llvm/lib/Target/RISCV/RISCVISelLowering.cpp
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@ -1492,10 +1492,11 @@ static bool CC_RISCVAssign2XLen(unsigned XLen, CCState &State, CCValAssign VA1,
VA1.getLocVT(), CCValAssign::Full));
} else {
// Both halves must be passed on the stack, with proper alignment.
unsigned StackAlign = std::max(XLenInBytes, ArgFlags1.getOrigAlign());
Align StackAlign =
std::max(Align(XLenInBytes), ArgFlags1.getNonZeroOrigAlign());
State.addLoc(
CCValAssign::getMem(VA1.getValNo(), VA1.getValVT(),
State.AllocateStack(XLenInBytes, Align(StackAlign)),
State.AllocateStack(XLenInBytes, StackAlign),
VA1.getLocVT(), CCValAssign::Full));
State.addLoc(CCValAssign::getMem(
ValNo2, ValVT2, State.AllocateStack(XLenInBytes, Align(XLenInBytes)),
@ -1579,7 +1580,7 @@ static bool CC_RISCV(const DataLayout &DL, RISCVABI::ABI ABI, unsigned ValNo,
// original type is larger than 2*XLEN, so the register alignment rule does
// not apply.
unsigned TwoXLenInBytes = (2 * XLen) / 8;
if (!IsFixed && ArgFlags.getOrigAlign() == TwoXLenInBytes &&
if (!IsFixed && ArgFlags.getNonZeroOrigAlign() == TwoXLenInBytes &&
DL.getTypeAllocSize(OrigTy) == TwoXLenInBytes) {
unsigned RegIdx = State.getFirstUnallocated(ArgGPRs);
// Skip 'odd' register if necessary.

6
llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
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@ -841,7 +841,7 @@ WebAssemblyTargetLowering::LowerCall(CallLoweringInfo &CLI,
assert(VT != MVT::iPTR && "Legalized args should be concrete");
Type *Ty = VT.getTypeForEVT(*DAG.getContext());
Align Alignment =
std::max(Align(Out.Flags.getOrigAlign()), Layout.getABITypeAlign(Ty));
std::max(Out.Flags.getNonZeroOrigAlign(), Layout.getABITypeAlign(Ty));
unsigned Offset =
CCInfo.AllocateStack(Layout.getTypeAllocSize(Ty), Alignment);
CCInfo.addLoc(CCValAssign::getMem(ArgLocs.size(), VT.getSimpleVT(),
@ -915,7 +915,7 @@ WebAssemblyTargetLowering::LowerCall(CallLoweringInfo &CLI,
if (In.Flags.isInConsecutiveRegsLast())
fail(DL, DAG,
"WebAssembly hasn't implemented cons regs last return values");
// Ignore In.getOrigAlign() because all our arguments are passed in
// Ignore In.getNonZeroOrigAlign() because all our arguments are passed in
// registers.
InTys.push_back(In.VT);
}
@ -1002,7 +1002,7 @@ SDValue WebAssemblyTargetLowering::LowerFormalArguments(
fail(DL, DAG, "WebAssembly hasn't implemented cons regs arguments");
if (In.Flags.isInConsecutiveRegsLast())
fail(DL, DAG, "WebAssembly hasn't implemented cons regs last arguments");
// Ignore In.getOrigAlign() because all our arguments are passed in
// Ignore In.getNonZeroOrigAlign() because all our arguments are passed in
// registers.
InVals.push_back(In.Used ? DAG.getNode(WebAssemblyISD::ARGUMENT, DL, In.VT,
DAG.getTargetConstant(InVals.size(),