[PATCH] D83160: [InstCombine] Lower infinite combine loop detection thresholds
Roman Lebedev via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Sun Jul 5 15:28:36 PDT 2020
lebedev.ri updated this revision to Diff 275580.
lebedev.ri marked an inline comment as done.
lebedev.ri added a comment.
Addressing review notes.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D83160/new/
https://reviews.llvm.org/D83160
Files:
llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
Index: llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
===================================================================
--- llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
+++ llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
@@ -123,8 +123,13 @@
DEBUG_COUNTER(VisitCounter, "instcombine-visit",
"Controls which instructions are visited");
+// FIXME: these limits eventually should be as low as 2.
static constexpr unsigned InstCombineDefaultMaxIterations = 1000;
+#ifndef NDEBUG
+static constexpr unsigned InstCombineDefaultInfiniteLoopThreshold = 100;
+#else
static constexpr unsigned InstCombineDefaultInfiniteLoopThreshold = 1000;
+#endif
static cl::opt<bool>
EnableCodeSinking("instcombine-code-sinking", cl::desc("Enable code sinking"),
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