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Reset CFG edge tracking on re-run.

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This commit is contained in:
Ben Vanik
2014-08-06 11:38:36 -07:00
parent b6046b1860
commit 9efd372d92
2 changed files with 12 additions and 3 deletions
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12
src/alloy/compiler/passes/control_flow_analysis_pass.cc
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@@ -30,10 +30,18 @@ ControlFlowAnalysisPass::~ControlFlowAnalysisPass() {}
int ControlFlowAnalysisPass::Run(HIRBuilder* builder) {
SCOPE_profile_cpu_f("alloy");
// TODO(benvanik): reset edges for all blocks? Needed to be re-runnable.
// Reset edges for all blocks. Needed to be re-runnable.
// Note that this wastes a bunch of arena memory, so we shouldn't
// re-run too often.
auto block = builder->first_block();
while (block) {
block->incoming_edge_head = nullptr;
block->outgoing_edge_head = nullptr;
block = block->next;
}
// Add edges.
auto block = builder->first_block();
block = builder->first_block();
while (block) {
auto instr = block->instr_tail;
while (instr) {