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Backed out changeset 61b3f3d9bffe (bug 1079826) for jit-test failures.

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--HG--
extra : rebase_source : e55e7c6fcf2f1f116175d33b0fe0f12f266b5f0d
This commit is contained in:
Ryan VanderMeulen 2014-10-09 12:17:12 -04:00
parent 7b80880b2e
commit 76f67de106
4 changed files with 18 additions and 51 deletions
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17
js/src/asmjs/AsmJSModule.cpp
View File

@ -81,7 +81,6 @@ AsmJSModule::AsmJSModule(ScriptSource *scriptSource, uint32_t srcStart, uint32_t
dynamicallyLinked_(false),
loadedFromCache_(false),
profilingEnabled_(false),
interrupted_(false),
codeIsProtected_(false)
{
mozilla::PodZero(&pod);
@ -96,8 +95,6 @@ AsmJSModule::AsmJSModule(ScriptSource *scriptSource, uint32_t srcStart, uint32_t
AsmJSModule::~AsmJSModule()
{
MOZ_ASSERT(!interrupted_);
scriptSource_->decref();
if (code_) {
@ -449,11 +446,8 @@ AsmJSReportOverRecursed()
static bool
AsmJSHandleExecutionInterrupt()
{
AsmJSActivation *act = PerThreadData::innermostAsmJSActivation();
act->module().setInterrupted(true);
bool ret = HandleExecutionInterrupt(act->cx());
act->module().setInterrupted(false);
return ret;
JSContext *cx = PerThreadData::innermostAsmJSActivation()->cx();
return HandleExecutionInterrupt(cx);
}
static int32_t
@ -1552,13 +1546,6 @@ AsmJSModule::clone(JSContext *cx, ScopedJSDeletePtr<AsmJSModule> *moduleOut) con
bool
AsmJSModule::changeHeap(Handle<ArrayBufferObject*> newBuffer, JSContext *cx)
{
// Content JS should not be able to run (and change heap) from within an
// interrupt callback, but in case it does, fail to change heap. Otherwise,
// the heap can change at every single instruction which would prevent
// future optimizations like heap-base hoisting.
if (interrupted_)
return false;
uint32_t heapLength = newBuffer->byteLength();
if (heapLength & pod.heapLengthMask_ || heapLength < pod.minHeapLength_)
return false;

5
js/src/asmjs/AsmJSModule.h
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@ -821,7 +821,6 @@ class AsmJSModule
bool dynamicallyLinked_;
bool loadedFromCache_;
bool profilingEnabled_;
bool interrupted_;
// This field is accessed concurrently when requesting an interrupt.
// Access must be synchronized via the runtime's interrupt lock.
@ -1479,10 +1478,6 @@ class AsmJSModule
return profilingEnabled_;
}
void setProfilingEnabled(bool enabled, JSContext *cx);
void setInterrupted(bool interrupted) {
MOZ_ASSERT(isDynamicallyLinked());
interrupted_ = interrupted;
}
// Additionally, these functions may only be called while holding the
// runtime's interrupt lock.

29
js/src/jit-test/tests/asm.js/testTimeout7-nosignals.js
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@ -1,29 +0,0 @@
// |jit-test| exitstatus: 6;
load(libdir + "asm.js");
// This test may iloop for valid reasons if not compiled with asm.js (namely,
// inlining may allow the heap load to be hoisted out of the loop).
if (!isAsmJSCompilationAvailable())
quit();
setJitCompilerOption("signals.enable", 0);
var byteLength =
Function.prototype.call.bind(Object.getOwnPropertyDescriptor(ArrayBuffer.prototype, 'byteLength').get);
var buf1 = new ArrayBuffer(BUF_CHANGE_MIN);
new Int32Array(buf1)[0] = 13;
var buf2 = new ArrayBuffer(BUF_CHANGE_MIN);
new Int32Array(buf2)[0] = 42;
// Test changeHeap from interrupt (as if that could ever happen...)
var m = asmCompile('glob', 'ffis', 'b', USE_ASM +
`var I32=glob.Int32Array; var i32=new I32(b);
var len=glob.byteLength;
function changeHeap(b2) { if(len(b2) & 0xffffff || len(b2) <= 0xffffff) return false; i32=new I32(b2); b=b2; return true }
function f() {}
function loop(i) { i=i|0; while((i32[i>>2]|0) == 13) { f() } }
return {loop:loop, changeHeap:changeHeap}`);
var { loop, changeHeap } = asmLink(m, this, null, buf1);
timeout(1, function() { assertEq(changeHeap(buf2), false); return false });
loop(0);

18
js/src/jit-test/tests/asm.js/testTimeout7.js
View File

@ -1,4 +1,3 @@
// |jit-test| exitstatus: 6;
load(libdir + "asm.js");
// This test may iloop for valid reasons if not compiled with asm.js (namely,
@ -23,5 +22,20 @@ var m = asmCompile('glob', 'ffis', 'b', USE_ASM +
function loop(i) { i=i|0; while((i32[i>>2]|0) == 13) { f() } }
return {loop:loop, changeHeap:changeHeap}`);
var { loop, changeHeap } = asmLink(m, this, null, buf1);
timeout(1, function() { assertEq(changeHeap(buf2), false); return false });
timeout(1, function() { changeHeap(buf2); return true });
loop(0);
timeout(-1);
// Try again, but this time with signals disabled
setJitCompilerOption("signals.enable", 0);
var m = asmCompile('glob', 'ffis', 'b', USE_ASM +
`var I32=glob.Int32Array; var i32=new I32(b);
var len=glob.byteLength;
function changeHeap(b2) { if(len(b2) & 0xffffff || len(b2) <= 0xffffff) return false; i32=new I32(b2); b=b2; return true }
function f() {}
function loop(i) { i=i|0; while((i32[i>>2]|0) == 13) { f() } }
return {loop:loop, changeHeap:changeHeap}`);
var { loop, changeHeap } = asmLink(m, this, null, buf1);
timeout(1, function() { changeHeap(buf2); return true });
loop(0);
timeout(-1);