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| author | Evan Cheng <evan.cheng@apple.com> | 2008-10-27 23:21:01 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-10-27 23:21:01 +0000 |
| commit | c00c2a29f47ae0597f156a486238f64a8888a498 (patch) | |
| tree | 576c709653e9a0f2655487d66bc267a007660b8d /lib/CodeGen/SimpleRegisterCoalescing.h | |
| parent | b2b229296a53bc439b39e83e77038e6e1d3e7309 (diff) | |
| download | external_llvm-c00c2a29f47ae0597f156a486238f64a8888a498.tar.gz external_llvm-c00c2a29f47ae0597f156a486238f64a8888a498.tar.bz2 external_llvm-c00c2a29f47ae0597f156a486238f64a8888a498.zip | |
Remove val# defined by a remat'ed def that is now dead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58294 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SimpleRegisterCoalescing.h')
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.h b/lib/CodeGen/SimpleRegisterCoalescing.h index 330c476dbf..abe392990d 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.h +++ b/lib/CodeGen/SimpleRegisterCoalescing.h @@ -269,6 +269,11 @@ namespace llvm { /// live range is dead. Return true if live interval is removed. bool ShortenDeadCopySrcLiveRange(LiveInterval &li, MachineInstr *CopyMI); + /// RemoveDeadDef - If a def of a live interval is now determined dead, + /// remove the val# it defines. If the live interval becomes empty, remove + /// it as well. + bool RemoveDeadDef(LiveInterval &li, MachineInstr *DefMI); + /// lastRegisterUse - Returns the last use of the specific register between /// cycles Start and End or NULL if there are no uses. MachineOperand *lastRegisterUse(unsigned Start, unsigned End, unsigned Reg, |