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8193518: C2: Vector registers sometimes corrupted at safepoint

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Reviewed-by: neliasso, thartmann, kvn
This commit is contained in:
Roland Westrelin 2017-12-15 10:26:45 -08:00
parent 063f19b329
commit d2db163edb
2 changed files with 6 additions and 4 deletions
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6
src/hotspot/share/opto/compile.hpp
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@ -378,7 +378,7 @@ class Compile : public Phase {
bool _has_stringbuilder; // True StringBuffers or StringBuilders are allocated
bool _has_boxed_value; // True if a boxed object is allocated
bool _has_reserved_stack_access; // True if the method or an inlined method is annotated with ReservedStackAccess
int _max_vector_size; // Maximum size of generated vectors
uint _max_vector_size; // Maximum size of generated vectors
uint _trap_hist[trapHistLength]; // Cumulative traps
bool _trap_can_recompile; // Have we emitted a recompiling trap?
uint _decompile_count; // Cumulative decompilation counts.
@ -656,8 +656,8 @@ class Compile : public Phase {
void set_has_boxed_value(bool z) { _has_boxed_value = z; }
bool has_reserved_stack_access() const { return _has_reserved_stack_access; }
void set_has_reserved_stack_access(bool z) { _has_reserved_stack_access = z; }
int max_vector_size() const { return _max_vector_size; }
void set_max_vector_size(int s) { _max_vector_size = s; }
uint max_vector_size() const { return _max_vector_size; }
void set_max_vector_size(uint s) { _max_vector_size = s; }
void set_trap_count(uint r, uint c) { assert(r < trapHistLength, "oob"); _trap_hist[r] = c; }
uint trap_count(uint r) const { assert(r < trapHistLength, "oob"); return _trap_hist[r]; }
bool trap_can_recompile() const { return _trap_can_recompile; }

4
src/hotspot/share/opto/superword.cpp
View File

@ -2442,7 +2442,9 @@ void SuperWord::output() {
}
}//for (int i = 0; i < _block.length(); i++)
C->set_max_vector_size(max_vlen_in_bytes);
if (max_vlen_in_bytes > C->max_vector_size()) {
C->set_max_vector_size(max_vlen_in_bytes);
}
if (max_vlen_in_bytes > 0) {
cl->mark_loop_vectorized();
}