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ea4ee76d88
Reuse the existing KnownBits multiplication code to handle the 'extend + multiply + extract high bits' pattern for multiply-high ops. Noticed while looking at the codegen for D88785 / D98587 - the patch helps division-by-constant expansion code in particular, which suggests that we might have some further KnownBits div/rem cases we could handle - but this was far easier to implement. Differential Revision: https://reviews.llvm.org/D98857 |
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| .. | ||
| add-with-overflow.ll | ||
| add.ll | ||
| divide-by-constant.ll | ||
| imul-neg.ll | ||
| imul.ll | ||
| lshr.ll | ||
| mul64.ll | ||
| sdiv-exact.ll | ||
| smul-with-overflow.ll | ||
| sub-with-overflow.ll | ||
| sub.ll | ||
| umul-with-overflow.ll | ||