diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-07-04 19:28:31 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-07-04 19:28:31 +0000 |
| commit | b8720787015dc73d8a050b063366be6c3ad01946 (patch) | |
| tree | 3d4a03ae7359619d56d097bf1644726d6735479e /lib/CodeGen/LiveInterval.cpp | |
| parent | f86c00f1f89082c800dbb78870fc5537eb3702f6 (diff) | |
Ensure CopyToReg nodes are always glued to the call instruction.
The CopyToReg nodes that set up the argument registers before a call
must be glued to the call instruction. Otherwise, the scheduler may emit
the physreg copies long before the call, causing long live ranges for
the fixed registers.
Besides disabling good register allocation, that can also expose
problems when EmitInstrWithCustomInserter() splits a basic block during
the live range of a physreg.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159721 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveInterval.cpp')
0 files changed, 0 insertions, 0 deletions