Mercurial > hg > truffle
diff src/share/vm/opto/lcm.cpp @ 1137:97125851f396
6829187: compiler optimizations required for JSR 292
Summary: C2 implementation for invokedynamic support.
Reviewed-by: kvn, never
author | twisti |
---|---|
date | Tue, 05 Jan 2010 13:05:58 +0100 |
parents | f96a1a986f7b |
children | 1271af4ec18c |
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--- a/src/share/vm/opto/lcm.cpp Mon Jan 04 15:21:09 2010 -0800 +++ b/src/share/vm/opto/lcm.cpp Tue Jan 05 13:05:58 2010 +0100 @@ -542,6 +542,16 @@ // pointers as far as the kill mask goes. bool exclude_soe = op == Op_CallRuntime; + // If the call is a MethodHandle invoke, we need to exclude the + // register which is used to save the SP value over MH invokes from + // the mask. Otherwise this register could be used for + // deoptimization information. + if (op == Op_CallStaticJava) { + MachCallStaticJavaNode* mcallstaticjava = (MachCallStaticJavaNode*) mcall; + if (mcallstaticjava->_method_handle_invoke) + proj->_rout.OR(Matcher::method_handle_invoke_SP_save_mask()); + } + // Fill in the kill mask for the call for( OptoReg::Name r = OptoReg::Name(0); r < _last_Mach_Reg; r=OptoReg::add(r,1) ) { if( !regs.Member(r) ) { // Not already defined by the call