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7133857: exp() and pow() should use the x87 ISA on x86

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Use x87 instructions to implement exp() and pow() in interpreter/c1/c2.

Reviewed-by: kvn, never, twisti
This commit is contained in:
Roland Westrelin 2012-05-15 10:10:23 +02:00
parent eb4a860bc3
commit b305cf722e
26 changed files with 783 additions and 279 deletions
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7
hotspot/src/share/vm/c1/c1_GraphBuilder.cpp
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@ -2949,6 +2949,8 @@ GraphBuilder::GraphBuilder(Compilation* compilation, IRScope* scope)
case vmIntrinsics::_dtan : // fall through
case vmIntrinsics::_dlog : // fall through
case vmIntrinsics::_dlog10 : // fall through
case vmIntrinsics::_dexp : // fall through
case vmIntrinsics::_dpow : // fall through
{
// Compiles where the root method is an intrinsic need a special
// compilation environment because the bytecodes for the method
@ -2969,6 +2971,9 @@ GraphBuilder::GraphBuilder(Compilation* compilation, IRScope* scope)
_state = start_block->state()->copy_for_parsing();
_last = start_block;
load_local(doubleType, 0);
if (scope->method()->intrinsic_id() == vmIntrinsics::_dpow) {
load_local(doubleType, 2);
}
// Emit the intrinsic node.
bool result = try_inline_intrinsics(scope->method());
@ -3182,6 +3187,8 @@ bool GraphBuilder::try_inline_intrinsics(ciMethod* callee) {
case vmIntrinsics::_dtan : // fall through
case vmIntrinsics::_dlog : // fall through
case vmIntrinsics::_dlog10 : // fall through
case vmIntrinsics::_dexp : // fall through
case vmIntrinsics::_dpow : // fall through
if (!InlineMathNatives) return false;
cantrap = false;
preserves_state = true;