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| author | Quentin Colombet <qcolombet@apple.com> | 2014-08-20 23:13:02 +0000 |
|---|---|---|
| committer | Quentin Colombet <qcolombet@apple.com> | 2014-08-20 23:13:02 +0000 |
| commit | 67639df1462c0b4d686ac83aca23d20d8b2ca214 (patch) | |
| tree | e91cc4bd7106dfc08de16e3d20c35fe2869b99a2 /llvm/lib/Support/StringRef.cpp | |
| parent | 1a4e73d7bfa4e9612d31ffd3f366a0857ac288c0 (diff) | |
| download | llvm-67639df1462c0b4d686ac83aca23d20d8b2ca214.zip llvm-67639df1462c0b4d686ac83aca23d20d8b2ca214.tar.gz llvm-67639df1462c0b4d686ac83aca23d20d8b2ca214.tar.bz2 | |
[PeepholeOptimizer] Take advantage of the isExtractSubreg property in the
advanced copy optimization.
This patch is a step toward transforming:
udiv r0, r0, r2
udiv r1, r1, r3
vmov.32 d16[0], r0
vmov.32 d16[1], r1
vmov r0, r1, d16
bx lr
into:
udiv r0, r0, r2
udiv r1, r1, r3
bx lr
Indeed, thanks to this patch, this optimization is able to look through
vmov r0, r1, d16
but it does not understand yet
vmov.32 d16[0], r0
vmov.32 d16[1], r1
Comming patches will fix that and update the related test case.
<rdar://problem/12702965>
llvm-svn: 216136
Diffstat (limited to 'llvm/lib/Support/StringRef.cpp')
0 files changed, 0 insertions, 0 deletions