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6862956: PhaseIdealLoop should have a CFG verification mode

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Reviewed-by: kvn, twisti
This commit is contained in:
Tom Rodriguez 2009-08-14 00:02:12 -07:00
parent 1a11be46ca
commit c94a076d34
6 changed files with 246 additions and 127 deletions
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21
hotspot/src/share/vm/opto/compile.cpp
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@ -1545,7 +1545,7 @@ void Compile::Optimize() {
if((loop_opts_cnt > 0) && (has_loops() || has_split_ifs())) {
{
TracePhase t2("idealLoop", &_t_idealLoop, true);
PhaseIdealLoop ideal_loop( igvn, NULL, true );
PhaseIdealLoop ideal_loop( igvn, true );
loop_opts_cnt--;
if (major_progress()) print_method("PhaseIdealLoop 1", 2);
if (failing()) return;
@ -1553,7 +1553,7 @@ void Compile::Optimize() {
// Loop opts pass if partial peeling occurred in previous pass
if(PartialPeelLoop && major_progress() && (loop_opts_cnt > 0)) {
TracePhase t3("idealLoop", &_t_idealLoop, true);
PhaseIdealLoop ideal_loop( igvn, NULL, false );
PhaseIdealLoop ideal_loop( igvn, false );
loop_opts_cnt--;
if (major_progress()) print_method("PhaseIdealLoop 2", 2);
if (failing()) return;
@ -1561,10 +1561,15 @@ void Compile::Optimize() {
// Loop opts pass for loop-unrolling before CCP
if(major_progress() && (loop_opts_cnt > 0)) {
TracePhase t4("idealLoop", &_t_idealLoop, true);
PhaseIdealLoop ideal_loop( igvn, NULL, false );
PhaseIdealLoop ideal_loop( igvn, false );
loop_opts_cnt--;
if (major_progress()) print_method("PhaseIdealLoop 3", 2);
}
if (!failing()) {
// Verify that last round of loop opts produced a valid graph
NOT_PRODUCT( TracePhase t2("idealLoopVerify", &_t_idealLoopVerify, TimeCompiler); )
PhaseIdealLoop::verify(igvn);
}
}
if (failing()) return;
@ -1597,12 +1602,20 @@ void Compile::Optimize() {
while(major_progress() && (loop_opts_cnt > 0)) {
TracePhase t2("idealLoop", &_t_idealLoop, true);
assert( cnt++ < 40, "infinite cycle in loop optimization" );
PhaseIdealLoop ideal_loop( igvn, NULL, true );
PhaseIdealLoop ideal_loop( igvn, true );
loop_opts_cnt--;
if (major_progress()) print_method("PhaseIdealLoop iterations", 2);
if (failing()) return;
}
}
{
// Verify that all previous optimizations produced a valid graph
// at least to this point, even if no loop optimizations were done.
NOT_PRODUCT( TracePhase t2("idealLoopVerify", &_t_idealLoopVerify, TimeCompiler); )
PhaseIdealLoop::verify(igvn);
}
{
NOT_PRODUCT( TracePhase t2("macroExpand", &_t_macroExpand, TimeCompiler); )
PhaseMacroExpand mex(igvn);