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8031321: Support Intel bit manipulation instructions

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Add support for BMI1 instructions

Reviewed-by: kvn, roland
This commit is contained in:
Igor Veresov 2014-03-12 11:24:26 -07:00
parent 1a1f9f0871
commit 768beb9a23
11 changed files with 1280 additions and 13 deletions
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12
hotspot/src/share/vm/adlc/formssel.cpp
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@ -660,6 +660,7 @@ int InstructForm::memory_operand(FormDict &globals) const {
int USE_of_memory = 0;
int DEF_of_memory = 0;
const char* last_memory_DEF = NULL; // to test DEF/USE pairing in asserts
const char* last_memory_USE = NULL;
Component *unique = NULL;
Component *comp = NULL;
ComponentList &components = (ComponentList &)_components;
@ -681,7 +682,16 @@ int InstructForm::memory_operand(FormDict &globals) const {
assert(0 == strcmp(last_memory_DEF, comp->_name), "every memory DEF is followed by a USE of the same name");
last_memory_DEF = NULL;
}
USE_of_memory++;
// Handles same memory being used multiple times in the case of BMI1 instructions.
if (last_memory_USE != NULL) {
if (strcmp(comp->_name, last_memory_USE) != 0) {
USE_of_memory++;
}
} else {
USE_of_memory++;
}
last_memory_USE = comp->_name;
if (DEF_of_memory == 0) // defs take precedence
unique = comp;
} else {