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PPC/s390: [wasm-c-api] Faster C-to-Wasm entry

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Port e304d80e09

Original Commit Message:

    powered by a new function Execution::CallWasm and a corresponding,
    Turbofan-generated CWasmEntry stub. This entirely sidesteps the
    traditional Execution::Invoke -> JSEntryStub path.

R=jkummerow@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: I87c85f3506c4e4dae12e462dd3c7790bc9ab25d1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1680798
Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#62429}
This commit is contained in:
Milad Farazmand 2019-06-27 12:06:46 -04:00 committed by Commit Bot
parent 1a7b24012b
commit 934f375a75
2 changed files with 21 additions and 9 deletions
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20
src/compiler/backend/ppc/code-generator-ppc.cc
View File

@ -2326,14 +2326,20 @@ void CodeGenerator::AssembleConstructFrame() {
auto call_descriptor = linkage()->GetIncomingDescriptor();
if (frame_access_state()->has_frame()) {
if (call_descriptor->IsCFunctionCall()) {
__ mflr(r0);
if (FLAG_enable_embedded_constant_pool) {
__ Push(r0, fp, kConstantPoolRegister);
// Adjust FP to point to saved FP.
__ subi(fp, sp, Operand(StandardFrameConstants::kConstantPoolOffset));
if (info()->GetOutputStackFrameType() == StackFrame::C_WASM_ENTRY) {
__ StubPrologue(StackFrame::C_WASM_ENTRY);
// Reserve stack space for saving the c_entry_fp later.
__ addi(sp, sp, Operand(-kSystemPointerSize));
} else {
__ Push(r0, fp);
__ mr(fp, sp);
__ mflr(r0);
if (FLAG_enable_embedded_constant_pool) {
__ Push(r0, fp, kConstantPoolRegister);
// Adjust FP to point to saved FP.
__ subi(fp, sp, Operand(StandardFrameConstants::kConstantPoolOffset));
} else {
__ Push(r0, fp);
__ mr(fp, sp);
}
}
} else if (call_descriptor->IsJSFunctionCall()) {
__ Prologue();

10
src/compiler/backend/s390/code-generator-s390.cc
View File

@ -3024,8 +3024,14 @@ void CodeGenerator::AssembleConstructFrame() {
if (frame_access_state()->has_frame()) {
if (call_descriptor->IsCFunctionCall()) {
__ Push(r14, fp);
__ LoadRR(fp, sp);
if (info()->GetOutputStackFrameType() == StackFrame::C_WASM_ENTRY) {
__ StubPrologue(StackFrame::C_WASM_ENTRY);
// Reserve stack space for saving the c_entry_fp later.
__ lay(sp, MemOperand(sp, -kSystemPointerSize));
} else {
__ Push(r14, fp);
__ LoadRR(fp, sp);
}
} else if (call_descriptor->IsJSFunctionCall()) {
__ Prologue(ip);
if (call_descriptor->PushArgumentCount()) {