summaryrefslogtreecommitdiff
path: root/lib
diff options
context:
space:
mode:
authorBill Wendling <isanbard@gmail.com>2013-04-17 20:02:32 +0000
committerBill Wendling <isanbard@gmail.com>2013-04-17 20:02:32 +0000
commitd58b50b99b04bcb8199c2b0273618b6a37d61015 (patch)
tree32bda6b554c24291aed735d54c1afc2523726ce9 /lib
parent7c4cf030a898b5b4e0d2c66adf8dc068b1f1f070 (diff)
A limit of 500 was still a bit too high for some tests.
PR15000 has a testcase where the time to compile was bordering on 30s. When I dropped the limit value to 100, it became a much more managable 6s. The compile time seems to increase in a roughly linear fashion based on increasing the limit value. (See the runtimes below.) So, let's lower the limit to 100 so that they can get a more reasonable compile time. Limit Value Time ----------- ---- 10 0.9744s 20 1.8035s 30 2.3618s 40 2.9814s 50 3.6988s 60 4.5486s 70 4.9314s 80 5.8012s 90 6.4246s 100 7.0852s 110 7.6634s 120 8.3553s 130 9.0552s 140 9.6820s 150 9.8804s 160 10.8901s 170 10.9855s 180 12.0114s 190 12.6816s 200 13.2754s 210 13.9942s 220 13.8097s 230 14.3272s 240 15.7753s 250 15.6673s 260 16.0541s 270 16.7625s 280 17.3823s 290 18.8213s 300 18.6120s 310 20.0333s 320 19.5165s 330 20.2505s 340 20.7068s 350 21.1833s 360 22.9216s 370 22.2152s 380 23.9390s 390 23.4609s 400 24.0426s 410 24.6410s 420 26.5208s 430 27.7155s 440 26.4142s 450 28.5646s 460 27.3494s 470 29.7255s 480 29.4646s 490 30.5001s git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179713 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r--lib/Analysis/MemoryDependenceAnalysis.cpp4
1 files changed, 1 insertions, 3 deletions
diff --git a/lib/Analysis/MemoryDependenceAnalysis.cpp b/lib/Analysis/MemoryDependenceAnalysis.cpp
index 2240e9de33e..0e8529a4b07 100644
--- a/lib/Analysis/MemoryDependenceAnalysis.cpp
+++ b/lib/Analysis/MemoryDependenceAnalysis.cpp
@@ -47,9 +47,7 @@ STATISTIC(NumCacheCompleteNonLocalPtr,
"Number of block queries that were completely cached");
// Limit for the number of instructions to scan in a block.
-// FIXME: Figure out what a sane value is for this.
-// (500 is relatively insane.)
-static const int BlockScanLimit = 500;
+static const int BlockScanLimit = 100;
char MemoryDependenceAnalysis::ID = 0;