[llvm] 3d76a13 - Revert "[InstCombine] Lower infinite combine loop detection thresholds"

[Roman Lebedev via llvm-commits]

Author: Roman Lebedev
Date: 2020-08-19T16:53:30+03:00
New Revision: 3d76a133c7e0d4056c1a0657b0b186c381bf7b74

URL: https://github.com/llvm/llvm-project/commit/3d76a133c7e0d4056c1a0657b0b186c381bf7b74
DIFF: https://github.com/llvm/llvm-project/commit/3d76a133c7e0d4056c1a0657b0b186c381bf7b74.diff

LOG: Revert "[InstCombine] Lower infinite combine loop detection thresholds"

And as being reported by Florian Hahn, there's a hit
in MultiSource/Benchmarks/mafft from the test-suite on X86 with -O3 -flto,
so reverting until addressed.

This reverts commit 71e0b82c9f5039cb3987c91075e78733ef044c07.

Added: 
    

Modified: 
    llvm/lib/Transforms/InstCombine/InstructionCombining.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
index 9033e084eb75..cb6e77aa029c 100644
--- a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
@@ -127,7 +127,7 @@ DEBUG_COUNTER(VisitCounter, "instcombine-visit",
 // FIXME: these limits eventually should be as low as 2.
 static constexpr unsigned InstCombineDefaultMaxIterations = 1000;
 #ifndef NDEBUG
-static constexpr unsigned InstCombineDefaultInfiniteLoopThreshold = 10;
+static constexpr unsigned InstCombineDefaultInfiniteLoopThreshold = 100;
 #else
 static constexpr unsigned InstCombineDefaultInfiniteLoopThreshold = 1000;
 #endif