llvm-6502

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Commit Graph

Author	SHA1	Message	Date
Nick Lewycky	6977e79526	Support pointer comparisons against constants, when looking at the inline-cost savings from a pointer argument becoming an alloca. Sometimes callees will even compare a pointer to null and then branch to an otherwise unreachable block! Detect these cases and compute the number of saved instructions, instead of bailing out and reporting no savings. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148941 91177308-0d34-0410-b5e6-96231b3b80d8	2012-01-25 08:27:40 +00:00
Nick Lewycky	38b6d9dd22	Fix CountCodeReductionForAlloca to more accurately represent what SROA can and can't handle. Also don't produce non-zero results for things which won't be transformed by SROA at all just because we saw the loads/stores before we saw the use of the address. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148536 91177308-0d34-0410-b5e6-96231b3b80d8	2012-01-20 08:35:20 +00:00

Author

SHA1

Message

Date

Nick Lewycky

6977e79526

Support pointer comparisons against constants, when looking at the inline-cost

savings from a pointer argument becoming an alloca. Sometimes callees will even
compare a pointer to null and then branch to an otherwise unreachable block!
Detect these cases and compute the number of saved instructions, instead of
bailing out and reporting no savings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148941 91177308-0d34-0410-b5e6-96231b3b80d8

2012-01-25 08:27:40 +00:00

Nick Lewycky

38b6d9dd22

Fix CountCodeReductionForAlloca to more accurately represent what SROA can and

can't handle. Also don't produce non-zero results for things which won't be
transformed by SROA at all just because we saw the loads/stores before we saw
the use of the address.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148536 91177308-0d34-0410-b5e6-96231b3b80d8

2012-01-20 08:35:20 +00:00

2 Commits