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S390: Store Floats as 4 bytes and Double as 8 bytes for codegen

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R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com, bjaideep@ca.ibm.com
BUG=

Review-Url: https://codereview.chromium.org/2036523003
Cr-Commit-Position: refs/heads/master@{#36691}
This commit is contained in:
jyan 2016-06-02 15:13:13 -07:00 committed by Commit bot
parent 70e302eedd
commit 4d8bcd1101
1 changed files with 36 additions and 8 deletions
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44
src/compiler/s390/code-generator-s390.cc
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@ -1318,8 +1318,13 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
int num_slots = i.InputInt32(1);
__ lay(sp, MemOperand(sp, -num_slots * kPointerSize));
if (instr->InputAt(0)->IsFPRegister()) {
__ StoreDouble(i.InputDoubleRegister(0),
MemOperand(sp));
LocationOperand* op = LocationOperand::cast(instr->InputAt(0));
if (op->representation() == MachineRepresentation::kFloat64) {
__ StoreDouble(i.InputDoubleRegister(0), MemOperand(sp));
} else {
DCHECK(op->representation() == MachineRepresentation::kFloat32);
__ StoreFloat32(i.InputDoubleRegister(0), MemOperand(sp));
}
} else {
__ StoreP(i.InputRegister(0),
MemOperand(sp));
@ -1329,8 +1334,15 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
case kS390_StoreToStackSlot: {
int slot = i.InputInt32(1);
if (instr->InputAt(0)->IsFPRegister()) {
__ StoreDouble(i.InputDoubleRegister(0),
MemOperand(sp, slot * kPointerSize));
LocationOperand* op = LocationOperand::cast(instr->InputAt(0));
if (op->representation() == MachineRepresentation::kFloat64) {
__ StoreDouble(i.InputDoubleRegister(0),
MemOperand(sp, slot * kPointerSize));
} else {
DCHECK(op->representation() == MachineRepresentation::kFloat32);
__ StoreFloat32(i.InputDoubleRegister(0),
MemOperand(sp, slot * kPointerSize));
}
} else {
__ StoreP(i.InputRegister(0), MemOperand(sp, slot * kPointerSize));
}
@ -2017,17 +2029,33 @@ void CodeGenerator::AssembleMove(InstructionOperand* source,
__ Move(dst, src);
} else {
DCHECK(destination->IsFPStackSlot());
__ StoreDouble(src, g.ToMemOperand(destination));
LocationOperand* op = LocationOperand::cast(source);
if (op->representation() == MachineRepresentation::kFloat64) {
__ StoreDouble(src, g.ToMemOperand(destination));
} else {
__ StoreFloat32(src, g.ToMemOperand(destination));
}
}
} else if (source->IsFPStackSlot()) {
DCHECK(destination->IsFPRegister() || destination->IsFPStackSlot());
MemOperand src = g.ToMemOperand(source);
if (destination->IsFPRegister()) {
__ LoadDouble(g.ToDoubleRegister(destination), src);
LocationOperand* op = LocationOperand::cast(source);
if (op->representation() == MachineRepresentation::kFloat64) {
__ LoadDouble(g.ToDoubleRegister(destination), src);
} else {
__ LoadFloat32(g.ToDoubleRegister(destination), src);
}
} else {
LocationOperand* op = LocationOperand::cast(source);
DoubleRegister temp = kScratchDoubleReg;
__ LoadDouble(temp, src);
__ StoreDouble(temp, g.ToMemOperand(destination));
if (op->representation() == MachineRepresentation::kFloat64) {
__ LoadDouble(temp, src);
__ StoreDouble(temp, g.ToMemOperand(destination));
} else {
__ LoadFloat32(temp, src);
__ StoreFloat32(temp, g.ToMemOperand(destination));
}
}
} else {
UNREACHABLE();