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* Revert "Temporarily Revert "Add basic loop fusion pass.""Eric Christopher2019-04-171-0/+47
| | | | | | | | The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
* Temporarily Revert "Add basic loop fusion pass."Eric Christopher2019-04-171-47/+0
| | | | | | | | As it's causing some bot failures (and per request from kbarton). This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda. llvm-svn: 358546
* [SimplifyIndVar] Do not fail when we constant fold an IV user to ↵Hongbin Zheng2017-09-291-1/+1
| | | | | | | | | | ConstantPointerNull The type of a SCEVConstant may not match the corresponding LLVM Value. In this case, we skip the constant folding for now. TODO: Replace ConstantInt Zero by ConstantPointerNull llvm-svn: 314531
* [SimplifyIndVar] Constant fold IV usersHongbin Zheng2017-09-271-0/+47
This patch tries to transform cases like: for (unsigned i = 0; i < N; i += 2) { bool c0 = (i & 0x1) == 0; bool c1 = ((i + 1) & 0x1) == 1; } To for (unsigned i = 0; i < N; i += 2) { bool c0 = true; bool c1 = true; } This commit also update test/Transforms/IndVarSimplify/replace-srem-by-urem.ll to prevent constant folding. Differential Revision: https://reviews.llvm.org/D38272 llvm-svn: 314266
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