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8207049: Minor improvements of compiler code

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Reviewed-by: kvn, mdoerr
This commit is contained in:
Goetz Lindenmaier 2018-07-12 16:31:28 +02:00
parent f508eb1370
commit 2e682fa3cd
37 changed files with 158 additions and 115 deletions
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7
src/hotspot/share/c1/c1_LinearScan.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -3954,7 +3954,7 @@ void MoveResolver::resolve_mappings() {
if (!processed_interval) {
// no move could be processed because there is a cycle in the move list
// (e.g. r1 -> r2, r2 -> r1), so one interval must be spilled to memory
assert(spill_candidate != -1, "no interval in register for spilling found");
guarantee(spill_candidate != -1, "no interval in register for spilling found");
// create a new spill interval and assign a stack slot to it
Interval* from_interval = _mapping_from.at(spill_candidate);
@ -6301,7 +6301,8 @@ void ControlFlowOptimizer::delete_unnecessary_jumps(BlockList* code) {
assert(prev_branch->cond() == prev_cmp->condition(), "should be the same");
}
}
assert(prev_cmp != NULL, "should have found comp instruction for branch");
// Guarantee because it is dereferenced below.
guarantee(prev_cmp != NULL, "should have found comp instruction for branch");
if (prev_branch->block() == code->at(i + 1) && prev_branch->info() == NULL) {
TRACE_LINEAR_SCAN(3, tty->print_cr("Negating conditional branch and deleting unconditional branch at end of block B%d", block->block_id()));