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| author | Matthias Braun <matze@braunis.de> | 2017-06-27 00:58:48 +0000 |
|---|---|---|
| committer | Matthias Braun <matze@braunis.de> | 2017-06-27 00:58:48 +0000 |
| commit | e2ae00198231f8242a73a67ea9579ad2b8d172ca (patch) | |
| tree | 165917e179b9fa803772376bb16a5f10e535b0ef /llvm/lib/CodeGen | |
| parent | 604c003f5ffbc52604a03253fd57b2f3a361f4f9 (diff) | |
| download | bcm5719-llvm-e2ae00198231f8242a73a67ea9579ad2b8d172ca.tar.gz bcm5719-llvm-e2ae00198231f8242a73a67ea9579ad2b8d172ca.zip | |
ScheduleDAGInstrs: Fix fixupKills() adding too many kill flags.
Remove invalid shortcut in fixupKills(): A register needs to be marked
live even when we are not adding a kill flag. This is because a
partially live register must not get a kill flags, but it still needs to
be fully marked live when walking backwards.
llvm-svn: 306352
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/ScheduleDAGInstrs.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp index 7dd66d799be..0f70b0e9ca0 100644 --- a/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp +++ b/llvm/lib/CodeGen/ScheduleDAGInstrs.cpp @@ -1089,7 +1089,7 @@ static void toggleKills(const MachineRegisterInfo &MRI, LivePhysRegs &LiveRegs, // Things that are available after the instruction are killed by it. bool IsKill = LiveRegs.available(MRI, Reg); MO.setIsKill(IsKill); - if (IsKill && addToLiveRegs) + if (addToLiveRegs) LiveRegs.addReg(Reg); } } |
