SmallVectorImpl<SDValue> &InVals) const {
// TODO: add description of PPC stack frame format, or at least some docs.
//
+ bool isLittleEndian = Subtarget.isLittleEndian();
MachineFunction &MF = DAG.getMachineFunction();
MachineFrameInfo *MFI = MF.getFrameInfo();
PPCFunctionInfo *FuncInfo = MF.getInfo<PPCFunctionInfo>();
}
// All aggregates smaller than 8 bytes must be passed right-justified.
- if (ObjSize < PtrByteSize)
+ if (ObjSize < PtrByteSize && !isLittleEndian)
CurArgOffset = CurArgOffset + (PtrByteSize - ObjSize);
// The value of the object is its address.
int FI = MFI->CreateFixedObject(ObjSize, CurArgOffset, true);
// We need to load the argument to a virtual register if we determined
// above that we ran out of physical registers of the appropriate type.
if (needsLoad) {
- int FI = MFI->CreateFixedObject(ObjSize,
- CurArgOffset + (ArgSize - ObjSize),
- isImmutable);
+ if (ObjSize < ArgSize && !isLittleEndian)
+ CurArgOffset += ArgSize - ObjSize;
+ int FI = MFI->CreateFixedObject(ObjSize, CurArgOffset, isImmutable);
SDValue FIN = DAG.getFrameIndex(FI, PtrVT);
ArgVal = DAG.getLoad(ObjectVT, dl, Chain, FIN, MachinePointerInfo(),
false, false, false, 0);
SDLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const {
+ bool isLittleEndian = Subtarget.isLittleEndian();
unsigned NumOps = Outs.size();
EVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
}
if (GPR_idx == NumGPRs && Size < 8) {
- SDValue Const = DAG.getConstant(PtrByteSize - Size,
- PtrOff.getValueType());
- SDValue AddPtr = DAG.getNode(ISD::ADD, dl, PtrVT, PtrOff, Const);
+ SDValue AddPtr = PtrOff;
+ if (!isLittleEndian) {
+ SDValue Const = DAG.getConstant(PtrByteSize - Size,
+ PtrOff.getValueType());
+ AddPtr = DAG.getNode(ISD::ADD, dl, PtrVT, PtrOff, Const);
+ }
Chain = CallSeqStart = createMemcpyOutsideCallSeq(Arg, AddPtr,
CallSeqStart,
Flags, DAG, dl);
// small aggregates, particularly for packed ones.
// FIXME: It would be preferable to use the slot in the
// parameter save area instead of a new local variable.
- SDValue Const = DAG.getConstant(8 - Size, PtrOff.getValueType());
- SDValue AddPtr = DAG.getNode(ISD::ADD, dl, PtrVT, PtrOff, Const);
+ SDValue AddPtr = PtrOff;
+ if (!isLittleEndian) {
+ SDValue Const = DAG.getConstant(8 - Size, PtrOff.getValueType());
+ AddPtr = DAG.getNode(ISD::ADD, dl, PtrVT, PtrOff, Const);
+ }
Chain = CallSeqStart = createMemcpyOutsideCallSeq(Arg, AddPtr,
CallSeqStart,
Flags, DAG, dl);
// must be passed right-justified in the stack doubleword, and
// in the GPR, if one is available.
SDValue StoreOff;
- if (Arg.getSimpleValueType().SimpleTy == MVT::f32) {
+ if (Arg.getSimpleValueType().SimpleTy == MVT::f32 &&
+ !isLittleEndian) {
SDValue ConstFour = DAG.getConstant(4, PtrOff.getValueType());
StoreOff = DAG.getNode(ISD::ADD, dl, PtrVT, PtrOff, ConstFour);
} else
} else {
// Single-precision floating-point values are mapped to the
// second (rightmost) word of the stack doubleword.
- if (Arg.getValueType() == MVT::f32) {
+ if (Arg.getValueType() == MVT::f32 && !isLittleEndian) {
SDValue ConstFour = DAG.getConstant(4, PtrOff.getValueType());
PtrOff = DAG.getNode(ISD::ADD, dl, PtrVT, PtrOff, ConstFour);
}
--- /dev/null
+; Verify that small structures and float arguments are passed in the
+; least significant part of a stack slot doubleword.
+
+; RUN: llc < %s | FileCheck %s
+
+target datalayout = "E-m:e-i64:64-n32:64"
+target triple = "powerpc64-unknown-linux-gnu"
+
+%struct.large_arg = type { [8 x i64] }
+%struct.small_arg = type { i16, i8 }
+
+@gl = common global %struct.large_arg zeroinitializer, align 8
+@gs = common global %struct.small_arg zeroinitializer, align 2
+@gf = common global float 0.000000e+00, align 4
+
+define void @callee1(%struct.small_arg* noalias nocapture sret %agg.result, %struct.large_arg* byval nocapture readnone %pad, %struct.small_arg* byval nocapture readonly %x) {
+entry:
+ %0 = bitcast %struct.small_arg* %x to i32*
+ %1 = bitcast %struct.small_arg* %agg.result to i32*
+ %2 = load i32* %0, align 2
+ store i32 %2, i32* %1, align 2
+ ret void
+}
+; CHECK: @callee1
+; CHECK: lwz {{[0-9]+}}, 124(1)
+; CHECK: blr
+
+define void @caller1() {
+entry:
+ %tmp = alloca %struct.small_arg, align 2
+ call void @test1(%struct.small_arg* sret %tmp, %struct.large_arg* byval @gl, %struct.small_arg* byval @gs)
+ ret void
+}
+; CHECK: @caller1
+; CHECK: stw {{[0-9]+}}, 124(1)
+; CHECK: bl test1
+
+declare void @test1(%struct.small_arg* sret, %struct.large_arg* byval, %struct.small_arg* byval)
+
+define float @callee2(float %pad1, float %pad2, float %pad3, float %pad4, float %pad5, float %pad6, float %pad7, float %pad8, float %pad9, float %pad10, float %pad11, float %pad12, float %pad13, float %x) {
+entry:
+ ret float %x
+}
+; CHECK: @callee2
+; CHECK: lfs {{[0-9]+}}, 156(1)
+; CHECK: blr
+
+define void @caller2() {
+entry:
+ %0 = load float* @gf, align 4
+ %call = tail call float @test2(float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float %0)
+ ret void
+}
+; CHECK: @caller2
+; CHECK: stfs {{[0-9]+}}, 156(1)
+; CHECK: bl test2
+
+declare float @test2(float, float, float, float, float, float, float, float, float, float, float, float, float, float)
+
--- /dev/null
+; Verify that small structures and float arguments are passed in the
+; least significant part of a stack slot doubleword.
+
+; RUN: llc < %s | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-n32:64"
+target triple = "powerpc64le-unknown-linux-gnu"
+
+%struct.large_arg = type { [8 x i64] }
+%struct.small_arg = type { i16, i8 }
+
+@gl = common global %struct.large_arg zeroinitializer, align 8
+@gs = common global %struct.small_arg zeroinitializer, align 2
+@gf = common global float 0.000000e+00, align 4
+
+define void @callee1(%struct.small_arg* noalias nocapture sret %agg.result, %struct.large_arg* byval nocapture readnone %pad, %struct.small_arg* byval nocapture readonly %x) {
+entry:
+ %0 = bitcast %struct.small_arg* %x to i32*
+ %1 = bitcast %struct.small_arg* %agg.result to i32*
+ %2 = load i32* %0, align 2
+ store i32 %2, i32* %1, align 2
+ ret void
+}
+; CHECK: @callee1
+; CHECK: lwz {{[0-9]+}}, 120(1)
+; CHECK: blr
+
+define void @caller1() {
+entry:
+ %tmp = alloca %struct.small_arg, align 2
+ call void @test1(%struct.small_arg* sret %tmp, %struct.large_arg* byval @gl, %struct.small_arg* byval @gs)
+ ret void
+}
+; CHECK: @caller1
+; CHECK: stw {{[0-9]+}}, 120(1)
+; CHECK: bl test1
+
+declare void @test1(%struct.small_arg* sret, %struct.large_arg* byval, %struct.small_arg* byval)
+
+define float @callee2(float %pad1, float %pad2, float %pad3, float %pad4, float %pad5, float %pad6, float %pad7, float %pad8, float %pad9, float %pad10, float %pad11, float %pad12, float %pad13, float %x) {
+entry:
+ ret float %x
+}
+; CHECK: @callee2
+; CHECK: lfs {{[0-9]+}}, 152(1)
+; CHECK: blr
+
+define void @caller2() {
+entry:
+ %0 = load float* @gf, align 4
+ %call = tail call float @test2(float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float %0)
+ ret void
+}
+; CHECK: @caller2
+; CHECK: stfs {{[0-9]+}}, 152(1)
+; CHECK: bl test2
+
+declare float @test2(float, float, float, float, float, float, float, float, float, float, float, float, float, float)
+