Changeset 213753 in webkit for trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h

Timestamp:

Mar 10, 2017, 11:17:48 PM (8 years ago)

Author:

[email protected]

Message:

The JITs should be able to emit fast TLS loads
​https://bugs.webkit.org/show_bug.cgi?id=169483

Reviewed by Keith Miller.

Source/JavaScriptCore:

Added loadFromTLS32/64/Ptr to the MacroAssembler and added a B3 test for this.

• assembler/ARM64Assembler.h:

(JSC::ARM64Assembler::mrs_TPIDRRO_EL0):

• assembler/MacroAssembler.h:

(JSC::MacroAssembler::loadFromTLSPtr):

• assembler/MacroAssemblerARM64.h:

(JSC::MacroAssemblerARM64::loadFromTLS32):
(JSC::MacroAssemblerARM64::loadFromTLS64):

• assembler/MacroAssemblerX86Common.h:

(JSC::MacroAssemblerX86Common::loadFromTLS32):

• assembler/MacroAssemblerX86_64.h:

(JSC::MacroAssemblerX86_64::loadFromTLS64):

• assembler/X86Assembler.h:

(JSC::X86Assembler::adcl_im):
(JSC::X86Assembler::addl_mr):
(JSC::X86Assembler::addl_im):
(JSC::X86Assembler::andl_im):
(JSC::X86Assembler::orl_im):
(JSC::X86Assembler::orl_rm):
(JSC::X86Assembler::subl_im):
(JSC::X86Assembler::cmpb_im):
(JSC::X86Assembler::cmpl_rm):
(JSC::X86Assembler::cmpl_im):
(JSC::X86Assembler::testb_im):
(JSC::X86Assembler::movb_i8m):
(JSC::X86Assembler::movb_rm):
(JSC::X86Assembler::movl_mr):
(JSC::X86Assembler::movq_mr):
(JSC::X86Assembler::movsxd_rr):
(JSC::X86Assembler::gs):
(JSC::X86Assembler::X86InstructionFormatter::SingleInstructionBufferWriter::memoryModRM):

• b3/testb3.cpp:

(JSC::B3::testFastTLS):
(JSC::B3::run):

Source/WTF:

Consolidated what we know about fast TLS in FastTLS.h.

• WTF.xcodeproj/project.pbxproj:
• wtf/CMakeLists.txt:
• wtf/FastTLS.h: Added.

(WTF::loadFastTLS):
(WTF::fastTLSOffsetForKey):

• wtf/Platform.h:
• wtf/WTFThreadData.cpp:

(WTF::WTFThreadData::createAndRegisterForGetspecificDirect):

• wtf/WTFThreadData.h:

(WTF::wtfThreadData):

File:

• trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h (modified) (1 diff)

trunk/Source/JavaScriptCore/assembler/MacroAssemblerX86Common.h

@@ -3858 +3858 @@
     {
     }
+    
+#if ENABLE(FAST_TLS_JIT)
+    void loadFromTLS32(uint32_t offset, RegisterID dst)
+    {
+        m_assembler.gs();
+        m_assembler.movl_mr(offset, dst);
+    }
+#endif
 
     static void replaceWithBreakpoint(CodeLocationLabel instructionStart)