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comparison src/share/vm/opto/callnode.cpp @ 20452:f8afcfbdbf1c

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8046698: assert(false) failed: only Initialize or AddP expected macro.cpp:943 Summary: PhiNode inserted between AllocateNode and Initialization node confuses allocation elimination Reviewed-by: kvn
author roland
date Sat, 02 Aug 2014 07:06:08 +0200
parents 411e30e5fbb8
children 7848fc12602b 6e8e0bf87bbe
comparison
equal deleted inserted replaced
20450:fa6c442c59ee 20452:f8afcfbdbf1c
775 } 775 }
776 return false; 776 return false;
777 } 777 }
778 778
779 // Returns the unique CheckCastPP of a call 779 // Returns the unique CheckCastPP of a call
780 // or 'this' if there are several CheckCastPP 780 // or 'this' if there are several CheckCastPP or unexpected uses
781 // or returns NULL if there is no one. 781 // or returns NULL if there is no one.
782 Node *CallNode::result_cast() { 782 Node *CallNode::result_cast() {
783 Node *cast = NULL; 783 Node *cast = NULL;
784 784
785 Node *p = proj_out(TypeFunc::Parms); 785 Node *p = proj_out(TypeFunc::Parms);
791 if (use->is_CheckCastPP()) { 791 if (use->is_CheckCastPP()) {
792 if (cast != NULL) { 792 if (cast != NULL) {
793 return this; // more than 1 CheckCastPP 793 return this; // more than 1 CheckCastPP
794 } 794 }
795 cast = use; 795 cast = use;
796 } else if (!use->is_Initialize() &&
797 !use->is_AddP()) {
798 // Expected uses are restricted to a CheckCastPP, an Initialize
799 // node, and AddP nodes. If we encounter any other use (a Phi
800 // node can be seen in rare cases) return this to prevent
801 // incorrect optimizations.
802 return this;
796 } 803 }
797 } 804 }
798 return cast; 805 return cast;
799 } 806 }
800 807