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| author | Sam Parker <sam.parker@arm.com> | 2018-11-01 15:23:42 +0000 |
|---|---|---|
| committer | Sam Parker <sam.parker@arm.com> | 2018-11-01 15:23:42 +0000 |
| commit | 84a2f8b364eda5359f108915c2a2967f368e934a (patch) | |
| tree | 22a71065b46253808f36bbd04e4368ad7d43ec49 /llvm/lib/Object/ModuleSymbolTable.cpp | |
| parent | f1005012c26809b81374df80bd67deaaf9bd04a5 (diff) | |
| download | bcm5719-llvm-84a2f8b364eda5359f108915c2a2967f368e934a.tar.gz bcm5719-llvm-84a2f8b364eda5359f108915c2a2967f368e934a.zip | |
[ARM][CGP] Negative constant operand handling
While mutating instructions, we sign extended negative constant
operands for binary operators that can safely overflow. This was to
allow instructions, such as add nuw i8 %a, -2, to still be able to
perform a subtraction. However, the code to handle constants doesn't
take into consideration that instructions, such as sub nuw i8 -2, %a,
require the i8 -2 to be converted into i32 254.
This is a relatively simple fix, but I've taken the time to
reorganise the code a bit - mainly that instructions that can be
promoted are cached and splitting up the Mutate function.
Differential Revision: https://reviews.llvm.org/D53972
llvm-svn: 345840
Diffstat (limited to 'llvm/lib/Object/ModuleSymbolTable.cpp')
0 files changed, 0 insertions, 0 deletions
