Reviewers: Jarin,
Description:
[turbofan] Propagate representation information from call descriptors in
SimplifiedLowering.
[email protected]
BUG=
Please review this at https://codereview.chromium.org/1292033002/
Base URL: https://chromium.googlesource.com/v8/v8.git@master
Affected files (+21, -0 lines):
M src/compiler/simplified-lowering.cc
Index: src/compiler/simplified-lowering.cc
diff --git a/src/compiler/simplified-lowering.cc
b/src/compiler/simplified-lowering.cc
index
5ecd30c761a55318d68c83dfc3d84ac2908ba0d7..119c6f0a94bb61b98ae568e4ad6bb4e5c70b32e2
100644
--- a/src/compiler/simplified-lowering.cc
+++ b/src/compiler/simplified-lowering.cc
@@ -414,6 +414,25 @@ class RepresentationSelector {
}
}
+ void VisitCall(Node* node, SimplifiedLowering* lowering) {
+ const CallDescriptor* desc = OpParameter<const
CallDescriptor*>(node->op());
+ const MachineSignature* sig = desc->GetMachineSignature();
+ int params = static_cast<int>(sig->parameter_count());
+ // Propagate representation information from call descriptor.
+ for (int i = 0; i < node->InputCount(); i++) {
+ if (i == 0) {
+ // The target of the call.
+ ProcessInput(node, i, 0);
+ } else if ((i - 1) < params) {
+ ProcessInput(node, i, sig->GetParam(i - 1));
+ } else {
+ ProcessInput(node, i, 0);
+ }
+ }
+
+ SetOutput(node, desc->GetMachineSignature()->GetReturn());
+ }
+
void VisitStateValues(Node* node) {
if (phase_ == PROPAGATE) {
for (int i = 0; i < node->InputCount(); i++) {
@@ -533,6 +552,8 @@ class RepresentationSelector {
return VisitSelect(node, use, lowering);
case IrOpcode::kPhi:
return VisitPhi(node, use, lowering);
+ case IrOpcode::kCall:
+ return VisitCall(node, lowering);
//------------------------------------------------------------------
// JavaScript operators.
--
--
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