Add support for passing and returning vectors in accordance with the x86 calling convention.
- Add TargetLowering::lowerArguments() as a new stage in TargetLowering.
- Add support for passing arguments/return values in XMM registers in the x86 target.
BUG=none
R=jvoung@chromium.org, stichnot@chromium.org
Review URL: https://codereview.chromium.org/372113005
diff --git a/src/IceInstX8632.cpp b/src/IceInstX8632.cpp
index 63e2cd7..a3f0786 100644
--- a/src/IceInstX8632.cpp
+++ b/src/IceInstX8632.cpp
@@ -734,6 +734,14 @@
Str << "\n";
}
+void InstX8632Movp::dump(const Cfg *Func) const {
+ Ostream &Str = Func->getContext()->getStrDump();
+ Str << "movups." << getDest()->getType() << " ";
+ dumpDest(Func);
+ Str << ", ";
+ dumpSources(Func);
+}
+
void InstX8632Movq::emit(const Cfg *Func) const {
Ostream &Str = Func->getContext()->getStrEmit();
assert(getSrcSize() == 1);
@@ -746,14 +754,6 @@
Str << "\n";
}
-void InstX8632Movp::dump(const Cfg *Func) const {
- Ostream &Str = Func->getContext()->getStrDump();
- Str << "movups." << getDest()->getType() << " ";
- dumpDest(Func);
- Str << ", ";
- dumpSources(Func);
-}
-
void InstX8632Movq::dump(const Cfg *Func) const {
Ostream &Str = Func->getContext()->getStrDump();
Str << "movq." << getDest()->getType() << " ";
@@ -882,14 +882,19 @@
assert(getSrcSize() == 1);
Type Ty = getSrc(0)->getType();
Variable *Var = llvm::dyn_cast<Variable>(getSrc(0));
- if ((Ty == IceType_f32 || Ty == IceType_f64) && Var && Var->hasReg()) {
+ if ((isVectorType(Ty) || Ty == IceType_f32 || Ty == IceType_f64) && Var &&
+ Var->hasReg()) {
// The xmm registers can't be directly pushed, so we fake it by
// decrementing esp and then storing to [esp].
Str << "\tsub\tesp, " << typeWidthInBytes(Ty) << "\n";
if (!SuppressStackAdjustment)
Func->getTarget()->updateStackAdjustment(typeWidthInBytes(Ty));
- Str << "\tmov" << TypeX8632Attributes[Ty].SdSsString << "\t"
- << TypeX8632Attributes[Ty].WidthString << " [esp], ";
+ if (isVectorType(Ty)) {
+ Str << "\tmovups\txmmword ptr [esp], ";
+ } else {
+ Str << "\tmov" << TypeX8632Attributes[Ty].SdSsString << "\t"
+ << TypeX8632Attributes[Ty].WidthString << " [esp], ";
+ }
getSrc(0)->emit(Func);
Str << "\n";
} else if (Ty == IceType_f64 && (!Var || !Var->hasReg())) {
