Update V8 to version 4.1.0.21
This is a cherry-pick of all commits up to and including the
4.1.0.21 cherry-pick in Chromium.
Original commit message:
Version 4.1.0.21 (cherry-pick)
Merged 206e9136bde0f2b5ae8cb77afbb1e7833e5bd412
Unlink pages from the space page list after evacuation.
BUG=430201
LOG=N
R=jkummerow@chromium.org
Review URL: https://codereview.chromium.org/953813002
Cr-Commit-Position: refs/branch-heads/4.1@{#22}
Cr-Branched-From: 2e08d2a7aa9d65d269d8c57aba82eb38a8cb0a18-refs/heads/candidates@{#25353}
---
FPIIM-449
Change-Id: I8c23c7bbb70772b4858fe8a47b64fa97ee0d1f8c
diff --git a/src/arm/codegen-arm.cc b/src/arm/codegen-arm.cc
index d050399..fd1b0ef 100644
--- a/src/arm/codegen-arm.cc
+++ b/src/arm/codegen-arm.cc
@@ -288,8 +288,8 @@
__ bind(&loop);
__ ldr(temp1, MemOperand(src, 4, PostIndex));
- __ uxtb16(temp3, Operand(temp1, ROR, 0));
- __ uxtb16(temp4, Operand(temp1, ROR, 8));
+ __ uxtb16(temp3, temp1);
+ __ uxtb16(temp4, temp1, 8);
__ pkhbt(temp1, temp3, Operand(temp4, LSL, 16));
__ str(temp1, MemOperand(dest));
__ pkhtb(temp1, temp4, Operand(temp3, ASR, 16));
@@ -301,9 +301,9 @@
__ mov(chars, Operand(chars, LSL, 31), SetCC); // bit0 => ne, bit1 => cs
__ b(¬_two, cc);
__ ldrh(temp1, MemOperand(src, 2, PostIndex));
- __ uxtb(temp3, Operand(temp1, ROR, 8));
+ __ uxtb(temp3, temp1, 8);
__ mov(temp3, Operand(temp3, LSL, 16));
- __ uxtab(temp3, temp3, Operand(temp1, ROR, 0));
+ __ uxtab(temp3, temp3, temp1);
__ str(temp3, MemOperand(dest, 4, PostIndex));
__ bind(¬_two);
__ ldrb(temp1, MemOperand(src), ne);
@@ -604,8 +604,22 @@
__ add(src_elements, elements,
Operand(FixedDoubleArray::kHeaderSize - kHeapObjectTag + 4));
__ add(dst_elements, array, Operand(FixedArray::kHeaderSize));
- __ add(array, array, Operand(kHeapObjectTag));
__ add(dst_end, dst_elements, Operand(length, LSL, 1));
+
+ // Allocating heap numbers in the loop below can fail and cause a jump to
+ // gc_required. We can't leave a partly initialized FixedArray behind,
+ // so pessimistically fill it with holes now.
+ Label initialization_loop, initialization_loop_entry;
+ __ LoadRoot(scratch, Heap::kTheHoleValueRootIndex);
+ __ b(&initialization_loop_entry);
+ __ bind(&initialization_loop);
+ __ str(scratch, MemOperand(dst_elements, kPointerSize, PostIndex));
+ __ bind(&initialization_loop_entry);
+ __ cmp(dst_elements, dst_end);
+ __ b(lt, &initialization_loop);
+
+ __ add(dst_elements, array, Operand(FixedArray::kHeaderSize));
+ __ add(array, array, Operand(kHeapObjectTag));
__ LoadRoot(heap_number_map, Heap::kHeapNumberMapRootIndex);
// Using offsetted addresses in src_elements to fully take advantage of
// post-indexing.