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| author | Tim Renouf <tpr.llvm@botech.co.uk> | 2019-07-04 17:38:24 +0000 |
|---|---|---|
| committer | Tim Renouf <tpr.llvm@botech.co.uk> | 2019-07-04 17:38:24 +0000 |
| commit | 5816889c748b37e1c3f48e8799a3478cf5931f60 (patch) | |
| tree | 5c693a172c14089403cf5f3f29d1dcb821f39975 /llvm/lib/ToolDrivers/llvm-lib/LibDriver.cpp | |
| parent | 75b5edf6a1df09d466a9c4f5669121add1632067 (diff) | |
| download | llvm-5816889c748b37e1c3f48e8799a3478cf5931f60.zip llvm-5816889c748b37e1c3f48e8799a3478cf5931f60.tar.gz llvm-5816889c748b37e1c3f48e8799a3478cf5931f60.tar.bz2 | |
[AMDGPU] Custom lower INSERT_SUBVECTOR v3, v4, v5, v8
Summary:
Since the changes to introduce vec3 and vec5, INSERT_VECTOR for these
sizes has been marked "expand", which made LegalizeDAG lower it to loads
and stores via a stack slot. The code got optimized a bit later, but the
now-unused stack slot was never deleted.
This commit avoids that problem by custom lowering INSERT_SUBVECTOR into
an EXTRACT_VECTOR_ELT and INSERT_VECTOR_ELT for each element in the
subvector to insert.
V2: Addressed review comments re test.
Differential Revision: https://reviews.llvm.org/D63160
Change-Id: I9e3c13e36f68cfa3431bb9814851cc1f673274e1
llvm-svn: 365148
Diffstat (limited to 'llvm/lib/ToolDrivers/llvm-lib/LibDriver.cpp')
0 files changed, 0 insertions, 0 deletions