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| author | David Green <david.green@arm.com> | 2018-06-21 08:30:07 +0000 |
|---|---|---|
| committer | David Green <david.green@arm.com> | 2018-06-21 08:30:07 +0000 |
| commit | a465188500672de18918b8c5c36366622429a5ce (patch) | |
| tree | 4f9ccfefc82e390c88ccfefebfaa7229f1aaea91 /llvm/lib/CodeGen/LiveDebugVariables.cpp | |
| parent | aefd73e1b51d11ec92b0ccb69c5cfc8b8d782799 (diff) | |
| download | llvm-a465188500672de18918b8c5c36366622429a5ce.zip llvm-a465188500672de18918b8c5c36366622429a5ce.tar.gz llvm-a465188500672de18918b8c5c36366622429a5ce.tar.bz2 | |
[DAGCombine] Fix alignment for offset loads/stores
The alignment parameter to getExtLoad is treated as a base alignment,
not the alignment of the load (base + offset). When we infer a better
alignment for a Ptr we need to ensure that it applies to the base to
prevent the alignment on the load from being wrong.
This fixes a bug where the alignment could then be used to incorrectly
prove noalias between a load and a store, leading to a miscompile.
Differential Revision: https://reviews.llvm.org/D48029
llvm-svn: 335210
Diffstat (limited to 'llvm/lib/CodeGen/LiveDebugVariables.cpp')
0 files changed, 0 insertions, 0 deletions