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diff src/share/vm/c1/c1_LIRAssembler.cpp @ 17980:0bf37f737702

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8032410: compiler/uncommontrap/TestStackBangRbp.java times out on Solaris-Sparc V9 Summary: make compiled code bang the stack by the worst case size of the interpreter frame at deoptimization points. Reviewed-by: twisti, kvn
author roland
date Tue, 01 Apr 2014 09:36:49 +0200
parents 15766b73dc1d
children 52b4284cb496
line wrap: on
line diff
--- a/src/share/vm/c1/c1_LIRAssembler.cpp	Mon Jun 09 15:42:31 2014 -0700
+++ b/src/share/vm/c1/c1_LIRAssembler.cpp	Tue Apr 01 09:36:49 2014 +0200
@@ -185,6 +185,13 @@
   return _masm->pc();
 }
 
+// To bang the stack of this compiled method we use the stack size
+// that the interpreter would need in case of a deoptimization. This
+// removes the need to bang the stack in the deoptimization blob which
+// in turn simplifies stack overflow handling.
+int LIR_Assembler::bang_size_in_bytes() const {
+  return MAX2(initial_frame_size_in_bytes(), _compilation->interpreter_frame_size());
+}
 
 void LIR_Assembler::emit_exception_entries(ExceptionInfoList* info_list) {
   for (int i = 0; i < info_list->length(); i++) {
@@ -792,7 +799,7 @@
 
 
 void LIR_Assembler::build_frame() {
-  _masm->build_frame(initial_frame_size_in_bytes());
+  _masm->build_frame(initial_frame_size_in_bytes(), bang_size_in_bytes());
 }