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Author SHA1 Message Date
Jakob Stoklund Olesen 71d3b895ba Also add <imp-def> operands for defined and dead super-registers when rewriting. 
We cannot rely on the <imp-def> operands added by LiveIntervals in all cases as
demonstrated by the test case.

llvm-svn: 130313
 2011-04-27 17:42:31 +00:00
Benjamin Kramer ba446cc12a Make tests more useful. 
lit needs a linter ...

llvm-svn: 130126
 2011-04-25 10:12:01 +00:00
Jakob Stoklund Olesen ae044c06bf Pick a conservative register class when creating a small live range for remat. 
The rematerialized instruction may require a more constrained register class
than the register being spilled. In the test case, the spilled register has been
inflated to the DPR register class, but we are rematerializing a load of the
ssub_0 sub-register which only exists for DPR_VFP2 registers.

The register class is reinflated after spilling, so the conservative choice is
only temporary.

llvm-svn: 128610
 2011-03-31 03:54:44 +00:00