[PATCH] D38272: [SimplifyIndVar] Constant fold IV users
Hongbin Zheng via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Sep 26 15:30:48 PDT 2017
etherzhhb created this revision.
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;
}
Repository:
rL LLVM
https://reviews.llvm.org/D38272
Files:
lib/Transforms/Utils/SimplifyIndVar.cpp
test/Transforms/IndVarSimplify/constant-fold.ll
test/Transforms/IndVarSimplify/replace-srem-by-urem.ll
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