Changeset 240432 in webkit for trunk/Source/JavaScriptCore/offlineasm/mips.rb

Timestamp:

Jan 24, 2019, 4:04:36 AM (6 years ago)

Author:

[email protected]

Message:

[JSC] Reenable baseline JIT on mips
​https://bugs.webkit.org/show_bug.cgi?id=192983

Reviewed by Mark Lam.

.:

Use baseline JIT by default on MIPS.

• Source/cmake/WebKitFeatures.cmake:

JSTests:

Added a new test for a case that was triggering a RELEASE_ASSERT when
testing.
Disable some slow tests that were already disabled for arm and x86.

• stress/json-parse-big-object.js: Added.
• stress/new-largeish-contiguous-array-with-size.js:
• stress/op_add.js:
• stress/op_bitand.js:
• stress/op_bitor.js:
• stress/op_bitxor.js:
• stress/op_lshift-ConstVar.js:
• stress/op_lshift-VarConst.js:
• stress/op_lshift-VarVar.js:
• stress/op_mod-ConstVar.js:
• stress/op_mod-VarConst.js:
• stress/op_mod-VarVar.js:
• stress/op_mul-ConstVar.js:
• stress/op_mul-VarConst.js:
• stress/op_mul-VarVar.js:
• stress/op_rshift-ConstVar.js:
• stress/op_rshift-VarConst.js:
• stress/op_rshift-VarVar.js:
• stress/op_sub-ConstVar.js:
• stress/op_sub-VarConst.js:
• stress/op_sub-VarVar.js:
• stress/op_urshift-ConstVar.js:
• stress/op_urshift-VarConst.js:
• stress/op_urshift-VarVar.js:
• stress/sampling-profiler-richards.js:
• stress/spread-forward-call-varargs-stack-overflow.js:

Source/JavaScriptCore:

Use $s0 as metadata register and make sure it's properly saved and
restored.

• jit/GPRInfo.h:
• jit/RegisterSet.cpp:

(JSC::RegisterSet::vmCalleeSaveRegisters):
(JSC::RegisterSet::llintBaselineCalleeSaveRegisters):

• llint/LowLevelInterpreter.asm:
• offlineasm/mips.rb:

Source/WTF:

Use baseline JIT by default on MIPS.

• wtf/Platform.h:

File:

• trunk/Source/JavaScriptCore/offlineasm/mips.rb (modified) (3 diffs)

trunk/Source/JavaScriptCore/offlineasm/mips.rb

@@ -136 +136 @@
         when "cfr"
             "$fp"
+        when "csr0"
+            "$s0"
         when "lr"
             "$ra"
@@ -879 +881 @@
         when "loadb"
             $asm.puts "lbu #{mipsFlippedOperands(operands)}"
-        when "loadbs"
+        when "loadbs", "loadbsp"
             $asm.puts "lb #{mipsFlippedOperands(operands)}"
         when "storeb"
@@ -1036 +1038 @@
             $asm.puts "bne #{operands[0].mipsOperand}, #{operands[1].mipsOperand}, #{operands[2].asmLabel}"
         when "leai", "leap"
-            operands[0].mipsEmitLea(operands[1])
+            if operands[0].is_a? LabelReference
+                labelRef = operands[0]
+                raise unless labelRef.offset == 0
+                $asm.puts "lw #{operands[1].mipsOperand}, %got(#{labelRef.asmLabel})($gp)"
+            else
+                operands[0].mipsEmitLea(operands[1])
+            end
+
         when "smulli"
             raise "Wrong number of arguments to smull in #{self.inspect} at #{codeOriginString}" unless operands.length == 4