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| author | Hal Finkel <hfinkel@anl.gov> | 2016-05-04 19:37:08 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2016-05-04 19:37:08 +0000 |
| commit | e2b89118bdc13d16d6cf68af3689ecaede279cda (patch) | |
| tree | 56230faf5e8527ff4a3ee6d753d91fb393bd0cb2 /lldb/packages/Python/lldbsuite/test/python_api/module_section | |
| parent | 13d57b94bb128af70924b188f65d7d8f2f715b79 (diff) | |
| download | bcm5719-llvm-e2b89118bdc13d16d6cf68af3689ecaede279cda.tar.gz bcm5719-llvm-e2b89118bdc13d16d6cf68af3689ecaede279cda.zip | |
[ConstantFold] Don't try to strip fp -> int bitcasts to simplify icmps
ConstantFold has logic to take icmp (bitcast x to y), null and strip the
bitcast. This makes sense in general, but not if x has floating-point type. In
this case, we'd need a fcmp, not an icmp, and the code will assert. We normally
don't see this situation because we constant fold fp -> int bitcasts, however,
we'll see it for bitcasts of ppc_fp128 -> i128. This is because that bitcast is
Endian-dependent, and as a result, we don't simplify it in ConstantFold (we
could, but no one has yet added the necessary logic). Regardless, ConstantFold
should not depend on that canonicalization for correctness.
llvm-svn: 268534
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/python_api/module_section')
0 files changed, 0 insertions, 0 deletions
