diff options
| author | Matthias Braun <matze@braunis.de> | 2017-02-17 23:15:03 +0000 |
|---|---|---|
| committer | Matthias Braun <matze@braunis.de> | 2017-02-17 23:15:03 +0000 |
| commit | 92e3dc4c5015296b28f73df9a8908e687fd71068 (patch) | |
| tree | cd77668537a5543829720e74f658240cac0ad64b /lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp | |
| parent | 6bd44f2375ea7bcd643378be895df50763e9f3c1 (diff) | |
AArch64LoadStoreOptimizer: Correctly clear kill flags
When promoting the Load of a Store-Load pair to a COPY all kill flags
between the store and the load need to be cleared.
rdar://30402435
Differential Revision: https://reviews.llvm.org/D30110
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295512 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp')
| -rw-r--r-- | lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp b/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp index 443a14f7068..8ec726267e8 100644 --- a/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp +++ b/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp @@ -866,9 +866,11 @@ AArch64LoadStoreOpt::promoteLoadFromStore(MachineBasicBlock::iterator LoadI, .addImm(Imms); } } - StoreI->clearRegisterKills(StRt, TRI); - (void)BitExtMI; + // Clear kill flags between store and load. + for (MachineInstr &MI : make_range(StoreI->getIterator(), + BitExtMI->getIterator())) + MI.clearRegisterKills(StRt, TRI); DEBUG(dbgs() << "Promoting load by replacing :\n "); DEBUG(StoreI->print(dbgs())); |