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| author | Vedant Kumar <vsk@apple.com> | 2018-12-18 21:05:03 +0000 |
|---|---|---|
| committer | Vedant Kumar <vsk@apple.com> | 2018-12-18 21:05:03 +0000 |
| commit | d3028ae838e70097df9b8b2a790d844d0668a498 (patch) | |
| tree | 9ac561f1bf4d32b24cc710d5321bb31715ee981c /utils | |
| parent | 2801c2a2b5db82d5dd1833bb3344f8411b42f5d2 (diff) | |
[CodeGen] Handle mixed-width ops in mixed-sign mul-with-overflow lowering
The special lowering for __builtin_mul_overflow introduced in r320902
fixed an ICE seen when passing mixed-sign operands to the builtin.
This patch extends the special lowering to cover mixed-width, mixed-sign
operands. In a few common scenarios, calls to muloti4 will no longer be
emitted.
This should address the latest comments in PR34920 and work around the
link failure seen in:
https://bugzilla.redhat.com/show_bug.cgi?id=1657544
Testing:
- check-clang
- A/B output comparison with: https://gist.github.com/vedantk/3eb9c88f82e5c32f2e590555b4af5081
Differential Revision: https://reviews.llvm.org/D55843
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@349542 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils')
0 files changed, 0 insertions, 0 deletions