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authorDuncan Sands <baldrick@free.fr>2012-06-13 09:42:13 +0000
committerDuncan Sands <baldrick@free.fr>2012-06-13 09:42:13 +0000
commitee5a094ccf1f04d3fcc92ac4d2fc8a2926cbb232 (patch)
treee4bba8613607c38aa947509b4cf6f9e501af678a /tools
parentcc95b57d42a4af1cbb0a0e4a4efc2133116dd21c (diff)
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When linearizing a multiplication, return at once if we see a factor of zero,
since then the entire expression must equal zero (similarly for other operations with an absorbing element). With this in place a bunch of reassociate code for handling constants is dead since it is all taken care of when linearizing. No intended functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158398 91177308-0d34-0410-b5e6-96231b3b80d8
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