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(parent: 64e6719) | patch
When SimpleRegisterCoalescing is trimming kill flags on a physical register
authorJakob Stoklund Olesen <stoklund@2pi.dk>
Wed, 20 Oct 2010 18:45:55 +0000 (18:45 +0000)
committerJakob Stoklund Olesen <stoklund@2pi.dk>
Wed, 20 Oct 2010 18:45:55 +0000 (18:45 +0000)
commit9b259404740cb48313615d2cfd88a6b1045560bf
treebfcd512a04feffa310a528cadfeea29196948542tree | snapshot
parent64e6719ee870f88db445feac0a1d5f597a7549e3commit | diff
When SimpleRegisterCoalescing is trimming kill flags on a physical register
operand, also check if subregisters are killed.

Add <imp-def> operands for subregisters that remain alive after a super register
is killed.

I don't have a testcase for this that reproduces on trunk. <rdar://problem/8441758>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116940 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/SimpleRegisterCoalescing.cpp diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors