Changeset 151031 in webkit for trunk/Source/JavaScriptCore/assembler/SH4Assembler.h

Timestamp:

May 31, 2013, 11:21:23 AM (12 years ago)

Author:

[email protected]

Message:

[sh4] Fix double floating point transfer in baseline JIT.
​https://bugs.webkit.org/show_bug.cgi?id=117054

Patch by Julien Brianceau <​[email protected]> on 2013-05-31
Reviewed by Oliver Hunt.

In current implementation, dmovRegReg function transfers only one single
FPRegister as PR=1 and SZ=0 in floating point status/control register.
Double transfers must be performed with two fmov.s opcodes.

• assembler/MacroAssemblerSH4.h:

(JSC::MacroAssemblerSH4::moveDouble):
(JSC::MacroAssemblerSH4::addDouble): Handle (op2==dest) case properly.
(JSC::MacroAssemblerSH4::sqrtDouble):

• assembler/SH4Assembler.h:

(JSC::SH4Assembler::fmovsRegReg):

File:

• trunk/Source/JavaScriptCore/assembler/SH4Assembler.h (modified) (1 diff)

trunk/Source/JavaScriptCore/assembler/SH4Assembler.h

@@ -830 +830 @@
     }
 
+    void fmovsRegReg(FPRegisterID src, FPRegisterID dst)
+    {
+        uint16_t opc = getOpcodeGroup1(FMOV_OPCODE, dst, src);
+        oneShortOp(opc, true, false);
+    }
+
     void fmovsReadrm(RegisterID src, FPRegisterID dst)
     {