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8166562: C2: Suppress relocations in scratch emit

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Reviewed-by: kvn
This commit is contained in:
Goetz Lindenmaier 2016-09-22 18:33:47 +02:00
parent 3c1ab21ffa
commit 969358fbb3
5 changed files with 79 additions and 73 deletions
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6
hotspot/src/share/vm/asm/codeBuffer.hpp
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@ -92,6 +92,7 @@ class CodeSection VALUE_OBJ_CLASS_SPEC {
address _locs_point; // last relocated position (grows upward)
bool _locs_own; // did I allocate the locs myself?
bool _frozen; // no more expansion of this section
bool _scratch_emit; // Buffer is used for scratch emit, don't relocate.
char _index; // my section number (SECT_INST, etc.)
CodeBuffer* _outer; // enclosing CodeBuffer
@ -108,6 +109,7 @@ class CodeSection VALUE_OBJ_CLASS_SPEC {
_locs_point = NULL;
_locs_own = false;
_frozen = false;
_scratch_emit = false;
debug_only(_index = (char)-1);
debug_only(_outer = (CodeBuffer*)badAddress);
}
@ -166,6 +168,10 @@ class CodeSection VALUE_OBJ_CLASS_SPEC {
bool is_frozen() const { return _frozen; }
bool has_locs() const { return _locs_end != NULL; }
// Mark scratch buffer.
void set_scratch_emit() { _scratch_emit = true; }
bool scratch_emit() { return _scratch_emit; }
CodeBuffer* outer() const { return _outer; }
// is a given address in this section? (2nd version is end-inclusive)