Version 3.16.13
Tagged stubs that rely on instance types as MEGAMORPHIC. (Chromium issue 173974)
Fixed clearing of dead dependent codes and verifing of weak embedded maps on full GC. (Chromium issue 172488,172489)
Made the arm port build cleanly with Clang.
Performance and stability improvements on all platforms.
git-svn-id: http://v8.googlecode.com/svn/trunk@13588 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index b0f3f8d..bdedb18 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -899,8 +899,8 @@
// R12 to r15 are callee save on all platforms.
if (fp_mode == kSaveFPRegs) {
CpuFeatures::Scope scope(SSE2);
- subq(rsp, Immediate(kDoubleSize * XMMRegister::kNumRegisters));
- for (int i = 0; i < XMMRegister::kNumRegisters; i++) {
+ subq(rsp, Immediate(kDoubleSize * XMMRegister::kMaxNumRegisters));
+ for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) {
XMMRegister reg = XMMRegister::from_code(i);
movsd(Operand(rsp, i * kDoubleSize), reg);
}
@@ -914,11 +914,11 @@
Register exclusion3) {
if (fp_mode == kSaveFPRegs) {
CpuFeatures::Scope scope(SSE2);
- for (int i = 0; i < XMMRegister::kNumRegisters; i++) {
+ for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) {
XMMRegister reg = XMMRegister::from_code(i);
movsd(reg, Operand(rsp, i * kDoubleSize));
}
- addq(rsp, Immediate(kDoubleSize * XMMRegister::kNumRegisters));
+ addq(rsp, Immediate(kDoubleSize * XMMRegister::kMaxNumRegisters));
}
for (int i = kNumberOfSavedRegs - 1; i >= 0; i--) {
Register reg = saved_regs[i];
@@ -3423,7 +3423,7 @@
#endif
// Optionally save all XMM registers.
if (save_doubles) {
- int space = XMMRegister::kNumRegisters * kDoubleSize +
+ int space = XMMRegister::kMaxNumRegisters * kDoubleSize +
arg_stack_space * kPointerSize;
subq(rsp, Immediate(space));
int offset = -2 * kPointerSize;
@@ -3877,8 +3877,7 @@
Register scratch,
Label* gc_required,
AllocationFlags flags) {
- ASSERT((flags & (DOUBLE_ALIGNMENT | RESULT_CONTAINS_TOP |
- SIZE_IN_WORDS)) == 0);
+ ASSERT((flags & (RESULT_CONTAINS_TOP | SIZE_IN_WORDS)) == 0);
if (!FLAG_inline_new) {
if (emit_debug_code()) {
// Trash the registers to simulate an allocation failure.
@@ -3912,6 +3911,13 @@
// Update allocation top.
UpdateAllocationTopHelper(result_end, scratch);
+ // Align the next allocation. Storing the filler map without checking top is
+ // always safe because the limit of the heap is always aligned.
+ if (((flags & DOUBLE_ALIGNMENT) != 0) && FLAG_debug_code) {
+ testq(result, Immediate(kDoubleAlignmentMask));
+ Check(zero, "Allocation is not double aligned");
+ }
+
// Tag the result if requested.
if ((flags & TAG_OBJECT) != 0) {
addq(result, Immediate(kHeapObjectTag));
@@ -4606,8 +4612,7 @@
void MacroAssembler::TestJSArrayForAllocationSiteInfo(
Register receiver_reg,
- Register scratch_reg,
- Label* allocation_info_present) {
+ Register scratch_reg) {
Label no_info_available;
ExternalReference new_space_start =
ExternalReference::new_space_start(isolate());
@@ -4623,7 +4628,6 @@
j(greater, &no_info_available);
CompareRoot(MemOperand(scratch_reg, -AllocationSiteInfo::kSize),
Heap::kAllocationSiteInfoMapRootIndex);
- j(equal, allocation_info_present);
bind(&no_info_available);
}