diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-06-03 00:07:47 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-06-03 00:07:47 +0000 |
| commit | 20e4cc9761f93188b3466fe87c2ff832eb05087e (patch) | |
| tree | e5d50ff62a4d61d3718f95aeb23ffb752f0d6da1 /lib/CodeGen/AsmPrinter/AsmPrinter.cpp | |
| parent | c3e90d71d0f3a6eacd5e8ff69f6821e3ea666648 (diff) | |
| download | external_llvm-20e4cc9761f93188b3466fe87c2ff832eb05087e.zip external_llvm-20e4cc9761f93188b3466fe87c2ff832eb05087e.tar.gz external_llvm-20e4cc9761f93188b3466fe87c2ff832eb05087e.tar.bz2 | |
Use readsWritesVirtualRegister instead of counting uses and defs when inserting
spills and reloads.
This means that a partial define of a register causes a reload so the other
parts of the register are preserved.
The reload can be prevented by adding an <imp-def> operand for the full
register. This is already done by the coalescer and live interval analysis where
relevant.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105369 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/AsmPrinter/AsmPrinter.cpp')
0 files changed, 0 insertions, 0 deletions