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Mac OS X ABI document lied. The first four XMM registers are used to pass

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vector arguments, not three.

llvm-svn: 28504
This commit is contained in:
Evan Cheng 2006-05-26 19:22:06 +00:00
parent 0043931185
commit 7f468901bb
1 changed files with 12 additions and 10 deletions
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22
lib/Target/X86/X86ISelLowering.cpp
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@ -396,7 +396,7 @@ HowToPassCCCArgument(MVT::ValueType ObjectVT, unsigned NumXMMRegs,
case MVT::v2i64:
case MVT::v4f32:
case MVT::v2f64:
if (NumXMMRegs < 3)
if (NumXMMRegs < 4)
ObjXMMRegs = 1;
else
ObjSize = 16;
@ -421,7 +421,9 @@ SDOperand X86TargetLowering::LowerCCCArguments(SDOperand Op, SelectionDAG &DAG)
//
unsigned ArgOffset = 0; // Frame mechanisms handle retaddr slot
unsigned NumXMMRegs = 0; // XMM regs used for parameter passing.
unsigned XMMArgRegs[] = { X86::XMM0, X86::XMM1, X86::XMM2 };
static const unsigned XMMArgRegs[] = {
X86::XMM0, X86::XMM1, X86::XMM2, X86::XMM3
};
for (unsigned i = 0; i < NumArgs; ++i) {
MVT::ValueType ObjectVT = Op.getValue(i).getValueType();
unsigned ArgIncrement = 4;
@ -486,7 +488,7 @@ SDOperand X86TargetLowering::LowerCCCCallTo(SDOperand Op, SelectionDAG &DAG) {
// Keep track of the number of XMM regs passed so far.
unsigned NumXMMRegs = 0;
static const unsigned XMMArgRegs[] = {
X86::XMM0, X86::XMM1, X86::XMM2
X86::XMM0, X86::XMM1, X86::XMM2, X86::XMM3
};
// Count how many bytes are to be pushed on the stack.
@ -512,7 +514,7 @@ SDOperand X86TargetLowering::LowerCCCCallTo(SDOperand Op, SelectionDAG &DAG) {
case MVT::v2i64:
case MVT::v4f32:
case MVT::v2f64:
if (NumXMMRegs < 3)
if (NumXMMRegs < 4)
++NumXMMRegs;
else
NumBytes += 16;
@ -568,7 +570,7 @@ SDOperand X86TargetLowering::LowerCCCCallTo(SDOperand Op, SelectionDAG &DAG) {
case MVT::v2i64:
case MVT::v4f32:
case MVT::v2f64:
if (NumXMMRegs < 3) {
if (NumXMMRegs < 4) {
RegsToPass.push_back(std::make_pair(XMMArgRegs[NumXMMRegs], Arg));
NumXMMRegs++;
} else {
@ -817,7 +819,7 @@ HowToPassFastCCArgument(MVT::ValueType ObjectVT,
case MVT::v2i64:
case MVT::v4f32:
case MVT::v2f64:
if (NumXMMRegs < 3)
if (NumXMMRegs < 4)
ObjXMMRegs = 1;
else
ObjSize = 16;
@ -849,7 +851,7 @@ X86TargetLowering::LowerFastCCArguments(SDOperand Op, SelectionDAG &DAG) {
unsigned NumXMMRegs = 0; // XMM regs used for parameter passing.
static const unsigned XMMArgRegs[] = {
X86::XMM0, X86::XMM1, X86::XMM2
X86::XMM0, X86::XMM1, X86::XMM2, X86::XMM3
};
for (unsigned i = 0; i < NumArgs; ++i) {
@ -995,7 +997,7 @@ X86TargetLowering::LowerFastCCArguments(SDOperand Op, SelectionDAG &DAG) {
{ X86::EAX, X86::EDX }
};
static const unsigned XMMArgRegs[] = {
X86::XMM0, X86::XMM1, X86::XMM2
X86::XMM0, X86::XMM1, X86::XMM2, X86::XMM3
};
for (unsigned i = 0; i != NumOps; ++i) {
@ -1023,7 +1025,7 @@ X86TargetLowering::LowerFastCCArguments(SDOperand Op, SelectionDAG &DAG) {
case MVT::v2i64:
case MVT::v4f32:
case MVT::v2f64:
if (NumXMMRegs < 3)
if (NumXMMRegs < 4)
NumXMMRegs++;
else
NumBytes += 16;
@ -1082,7 +1084,7 @@ X86TargetLowering::LowerFastCCArguments(SDOperand Op, SelectionDAG &DAG) {
case MVT::v2i64:
case MVT::v4f32:
case MVT::v2f64:
if (NumXMMRegs < 3) {
if (NumXMMRegs < 4) {
RegsToPass.push_back(std::make_pair(XMMArgRegs[NumXMMRegs], Arg));
NumXMMRegs++;
} else {