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| author | Yi-Hong Lyu <Yi-Hong.Lyu@ibm.com> | 2019-09-12 06:49:02 +0000 |
|---|---|---|
| committer | Yi-Hong Lyu <Yi-Hong.Lyu@ibm.com> | 2019-11-08 15:32:31 +0000 |
| commit | a3db9c08ebdf1f39ed89f4a7afa09fc153cf98c5 (patch) | |
| tree | 285bb4f1cfea51ba911e3e18d5aa370a6dae62e9 /lldb/packages/Python/lldbsuite/test/python_api | |
| parent | 9ee76ab37f1efa91432ec4efcba05819ccaeb2b1 (diff) | |
| download | bcm5719-llvm-a3db9c08ebdf1f39ed89f4a7afa09fc153cf98c5.tar.gz bcm5719-llvm-a3db9c08ebdf1f39ed89f4a7afa09fc153cf98c5.zip | |
[PowerPC] Remove redundant CRSET/CRUNSET in custom lowering of known CR bit spills
We lower known CR bit spills (CRSET/CRUNSET) to load and spill the known value
but forgot to remove the redundant spills.
e.g., This sequence was used to spill a CRUNSET:
crclr 4*cr5+lt
mfocrf r3,4
rlwinm r3,r3,20,0,0
stw r3,132(r1)
Custom lowering of known CR bit spills lower it to:
crxor 4*cr5+lt, 4*cr5+lt, 4*cr5+lt
li r3,0
stw r3,132(r1)
crxor is redundant if there is no use of 4*cr5+lt so we should remove it
Differential revision: https://reviews.llvm.org/D67722
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/python_api')
0 files changed, 0 insertions, 0 deletions
