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| author | Usman Nadeem <mnadeem@quicinc.com> | 2022-08-24 16:23:19 -0700 |
|---|---|---|
| committer | Usman Nadeem <mnadeem@quicinc.com> | 2022-08-24 16:24:19 -0700 |
| commit | 46768052e0c9e21a7fcaa2881e29e6b4237b200f (patch) | |
| tree | d48bc9c5ef98bb6b918bb465a7126df1a8df7547 /clang/lib/Frontend/InitPreprocessor.cpp | |
| parent | 5ce4c9aa0405bb28dbe374aa741044025d63f05c (diff) | |
| download | llvm-46768052e0c9e21a7fcaa2881e29e6b4237b200f.zip llvm-46768052e0c9e21a7fcaa2881e29e6b4237b200f.tar.gz llvm-46768052e0c9e21a7fcaa2881e29e6b4237b200f.tar.bz2 | |
[AArch64][DAGCombine] Fix a bug in performBuildVectorCombine where it could produce an invalid EXTRACT_SUBVECTOR
EXTRACT_SUBVECTOR requires that Idx be a constant multiple of ResultType's
known minimum vector length.
Something like this will produce an invalid extract_subvector:
t1: v4i16 = .....
t2: i32 = extract_vector_elt t1, Constant:i64<1>
t3: i32 = extract_vector_elt t1, Constant:i64<2>
t4: v2i32 = BUILD_VECTOR t2, t3
// produces
t5: v2i32 = extract_subvector t...., Constant:i64<1>
Differential Revision: https://reviews.llvm.org/D132517
Change-Id: I7a5acf054edee3e89c0f85a28d8869256403ce08
Diffstat (limited to 'clang/lib/Frontend/InitPreprocessor.cpp')
0 files changed, 0 insertions, 0 deletions