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8290964: C2 compilation fails with assert "non-reduction loop contains reduction nodes"

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Backport-of: 4bdd1c914859e221c64208d47ef309d463609953
This commit is contained in:
Tobias Hartmann 2022-11-23 14:12:13 +00:00
parent 3f3bbdfa26
commit 6c7378a33f
3 changed files with 0 additions and 21 deletions
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11
src/hotspot/share/opto/loopnode.cpp
View File

@ -3896,17 +3896,6 @@ uint IdealLoopTree::est_loop_flow_merge_sz() const {
return 0;
}
#ifdef ASSERT
bool IdealLoopTree::has_reduction_nodes() const {
for (uint i = 0; i < _body.size(); i++) {
if (_body[i]->is_reduction()) {
return true;
}
}
return false;
}
#endif // ASSERT
#ifndef PRODUCT
//------------------------------dump_head--------------------------------------
// Dump 1 liner for loop header info

5
src/hotspot/share/opto/loopnode.hpp
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@ -778,11 +778,6 @@ public:
void remove_main_post_loops(CountedLoopNode *cl, PhaseIdealLoop *phase);
#ifdef ASSERT
// Tell whether the body contains nodes marked as reductions.
bool has_reduction_nodes() const;
#endif // ASSERT
#ifndef PRODUCT
void dump_head() const; // Dump loop head only
void dump() const; // Dump this loop recursively

5
src/hotspot/share/opto/superword.cpp
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@ -2416,11 +2416,6 @@ bool SuperWord::output() {
return false;
}
// Check that the loop to be vectorized does not have inconsistent reduction
// information, which would likely lead to a miscompilation.
assert(!lpt()->has_reduction_nodes() || cl->is_reduction_loop(),
"non-reduction loop contains reduction nodes");
#ifndef PRODUCT
if (TraceLoopOpts) {
tty->print("SuperWord::output ");