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| author | Shuxin Yang <shuxin.llvm@gmail.com> | 2012-11-12 19:34:11 +0000 |
|---|---|---|
| committer | Shuxin Yang <shuxin.llvm@gmail.com> | 2012-11-12 19:34:11 +0000 |
| commit | 0a46bf13a3b6c412749b874b52c8234b027b7134 (patch) | |
| tree | 9f5167c84dd2188798cfc9ac5f136037969991b8 /include/llvm/CodeGen/MachineScheduler.h | |
| parent | ae692f2baedf53504af2715993b166950e185a55 (diff) | |
This change is to fix rdar://12571717 which is about assertion in Reassociate pass.
The assertion is trigged when the Reassociater tries to transform expression
... + 2 * n * 3 + 2 * m + ...
into:
... + 2 * (n*3 + m).
In the process of the transformation, a helper routine folds the constant 2*3 into 6,
confusing optimizer which is trying the to eliminate the common factor 2, and cannot
find 2 any more.
Review is pending. But I'd like commit first in order to help those who are waiting
for this fix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167740 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen/MachineScheduler.h')
0 files changed, 0 insertions, 0 deletions