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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/194556">194556</a></dd>
<dt>Author</dt> <dd>fpizlo@apple.com</dd>
<dt>Date</dt> <dd>2016-01-04 14:31:45 -0800 (Mon, 04 Jan 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>FTL B3 should do BitAnd binary snippets
https://bugs.webkit.org/show_bug.cgi?id=152713
Reviewed by Mark Lam.
Getting ready to finish up the binary bitop snippets.
* ftl/FTLLowerDFGToLLVM.cpp:
(JSC::FTL::DFG::LowerDFGToLLVM::compileBitAnd):
(JSC::FTL::DFG::LowerDFGToLLVM::emitBinarySnippet):
(JSC::FTL::DFG::LowerDFGToLLVM::emitBinaryBitOpSnippet):
(JSC::FTL::DFG::LowerDFGToLLVM::allocateCell):
* tests/stress/object-bit-and.js: Added.
(foo):
(things.valueOf):
* tests/stress/untyped-bit-and.js: Added.
(foo):
(valueOf):</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#trunkSourceJavaScriptCoreftlFTLLowerDFGToLLVMcpp">trunk/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkSourceJavaScriptCoretestsstressobjectbitandjs">trunk/Source/JavaScriptCore/tests/stress/object-bit-and.js</a></li>
<li><a href="#trunkSourceJavaScriptCoretestsstressuntypedbitandjs">trunk/Source/JavaScriptCore/tests/stress/untyped-bit-and.js</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (194555 => 194556)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog 2016-01-04 22:04:41 UTC (rev 194555)
+++ trunk/Source/JavaScriptCore/ChangeLog 2016-01-04 22:31:45 UTC (rev 194556)
</span><span class="lines">@@ -1,5 +1,26 @@
</span><span class="cx"> 2016-01-04 Filip Pizlo <fpizlo@apple.com>
</span><span class="cx">
</span><ins>+ FTL B3 should do BitAnd binary snippets
+ https://bugs.webkit.org/show_bug.cgi?id=152713
+
+ Reviewed by Mark Lam.
+
+ Getting ready to finish up the binary bitop snippets.
+
+ * ftl/FTLLowerDFGToLLVM.cpp:
+ (JSC::FTL::DFG::LowerDFGToLLVM::compileBitAnd):
+ (JSC::FTL::DFG::LowerDFGToLLVM::emitBinarySnippet):
+ (JSC::FTL::DFG::LowerDFGToLLVM::emitBinaryBitOpSnippet):
+ (JSC::FTL::DFG::LowerDFGToLLVM::allocateCell):
+ * tests/stress/object-bit-and.js: Added.
+ (foo):
+ (things.valueOf):
+ * tests/stress/untyped-bit-and.js: Added.
+ (foo):
+ (valueOf):
+
+2016-01-04 Filip Pizlo <fpizlo@apple.com>
+
</ins><span class="cx"> FTL B3 should do all of the non-bitop binary snippets
</span><span class="cx"> https://bugs.webkit.org/show_bug.cgi?id=152709
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoreftlFTLLowerDFGToLLVMcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp (194555 => 194556)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp 2016-01-04 22:04:41 UTC (rev 194555)
+++ trunk/Source/JavaScriptCore/ftl/FTLLowerDFGToLLVM.cpp 2016-01-04 22:31:45 UTC (rev 194556)
</span><span class="lines">@@ -52,6 +52,7 @@
</span><span class="cx"> #include "FTLThunks.h"
</span><span class="cx"> #include "FTLWeightedTarget.h"
</span><span class="cx"> #include "JITAddGenerator.h"
</span><ins>+#include "JITBitAndGenerator.h"
</ins><span class="cx"> #include "JITDivGenerator.h"
</span><span class="cx"> #include "JITMulGenerator.h"
</span><span class="cx"> #include "JITSubGenerator.h"
</span><span class="lines">@@ -2289,8 +2290,12 @@
</span><span class="cx">
</span><span class="cx"> void compileBitAnd()
</span><span class="cx"> {
</span><del>- if (m_node->child1().useKind() == UntypedUse || m_node->child2().useKind() == UntypedUse) {
</del><ins>+ if (m_node->isBinaryUseKind(UntypedUse)) {
+#if FTL_USES_B3
+ emitBinaryBitOpSnippet<JITBitAndGenerator>(operationValueBitAnd);
+#else // FTL_USES_B3
</ins><span class="cx"> compileUntypedBinaryOp<BitAndDescriptor>();
</span><ins>+#endif // FTL_USES_B3
</ins><span class="cx"> return;
</span><span class="cx"> }
</span><span class="cx"> setInt32(m_out.bitAnd(lowInt32(m_node->child1()), lowInt32(m_node->child2())));
</span><span class="lines">@@ -7453,6 +7458,59 @@
</span><span class="cx">
</span><span class="cx"> setJSValue(patchpoint);
</span><span class="cx"> }
</span><ins>+
+ template<typename BinaryBitOpGenerator>
+ void emitBinaryBitOpSnippet(J_JITOperation_EJJ slowPathFunction)
+ {
+ Node* node = m_node;
+
+ // FIXME: Make this do exceptions.
+ // https://bugs.webkit.org/show_bug.cgi?id=151686
+
+ LValue left = lowJSValue(node->child1());
+ LValue right = lowJSValue(node->child2());
+
+ SnippetOperand leftOperand(m_state.forNode(node->child1()).resultType());
+ SnippetOperand rightOperand(m_state.forNode(node->child2()).resultType());
+
+ PatchpointValue* patchpoint = m_out.patchpoint(Int64);
+ patchpoint->append(left, ValueRep::SomeRegister);
+ patchpoint->append(right, ValueRep::SomeRegister);
+ patchpoint->append(m_tagMask, ValueRep::reg(GPRInfo::tagMaskRegister));
+ patchpoint->append(m_tagTypeNumber, ValueRep::reg(GPRInfo::tagTypeNumberRegister));
+ patchpoint->numGPScratchRegisters = 1;
+ patchpoint->clobber(RegisterSet::macroScratchRegisters());
+ State* state = &m_ftlState;
+ patchpoint->setGenerator(
+ [=] (CCallHelpers& jit, const StackmapGenerationParams& params) {
+ AllowMacroScratchRegisterUsage allowScratch(jit);
+
+ auto generator = Box<BinaryBitOpGenerator>::create(
+ leftOperand, rightOperand, JSValueRegs(params[0].gpr()),
+ JSValueRegs(params[1].gpr()), JSValueRegs(params[2].gpr()), params.gpScratch(0));
+
+ generator->generateFastPath(jit);
+ generator->endJumpList().link(&jit);
+ CCallHelpers::Label done = jit.label();
+
+ params.addLatePath(
+ [=] (CCallHelpers& jit) {
+ AllowMacroScratchRegisterUsage allowScratch(jit);
+
+ // FIXME: Make this do something.
+ CCallHelpers::JumpList exceptions;
+
+ generator->slowPathJumpList().link(&jit);
+ callOperation(
+ *state, params.unavailableRegisters(), jit, node->origin.semantic,
+ &exceptions, slowPathFunction, params[0].gpr(), params[1].gpr(),
+ params[2].gpr());
+ jit.jump().linkTo(done, &jit);
+ });
+ });
+
+ setJSValue(patchpoint);
+ }
</ins><span class="cx"> #endif // FTL_USES_B3
</span><span class="cx">
</span><span class="cx"> LValue allocateCell(LValue allocator, LBasicBlock slowPath)
</span></span></pre></div>
<a id="trunkSourceJavaScriptCoretestsstressobjectbitandjs"></a>
<div class="addfile"><h4>Added: trunk/Source/JavaScriptCore/tests/stress/object-bit-and.js (0 => 194556)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/tests/stress/object-bit-and.js (rev 0)
+++ trunk/Source/JavaScriptCore/tests/stress/object-bit-and.js 2016-01-04 22:31:45 UTC (rev 194556)
</span><span class="lines">@@ -0,0 +1,16 @@
</span><ins>+function foo(a, b) {
+ return a & b;
+}
+
+noInline(foo);
+
+var things = [{valueOf: function() { return 6; }}];
+var results = [2];
+
+for (var i = 0; i < 100000; ++i) {
+ var result = foo(things[i % things.length], 10);
+ var expected = results[i % results.length];
+ if (result != expected)
+ throw "Error: bad result for i = " + i + ": " + result;
+}
+
</ins></span></pre></div>
<a id="trunkSourceJavaScriptCoretestsstressuntypedbitandjs"></a>
<div class="addfile"><h4>Added: trunk/Source/JavaScriptCore/tests/stress/untyped-bit-and.js (0 => 194556)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/JavaScriptCore/tests/stress/untyped-bit-and.js (rev 0)
+++ trunk/Source/JavaScriptCore/tests/stress/untyped-bit-and.js 2016-01-04 22:31:45 UTC (rev 194556)
</span><span class="lines">@@ -0,0 +1,16 @@
</span><ins>+function foo(a, b) {
+ return a & b;
+}
+
+noInline(foo);
+
+var things = [1, 2.5, "3", {valueOf: function() { return 4; }}];
+var results = [0, 2, 2, 0];
+
+for (var i = 0; i < 100000; ++i) {
+ var result = foo(things[i % things.length], 2);
+ var expected = results[i % results.length];
+ if (result != expected)
+ throw "Error: bad result for i = " + i + ": " + result;
+}
+
</ins></span></pre>
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