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Commit Graph

Author	SHA1	Message	Date
Dan Gohman	f5a309e989	Use a sign-extend instead of a zero-extend when promoting a trip count value when the original loop iteration condition is signed and the canonical induction variable won't undergo signed overflow. This isn't required for correctness; it just preserves more information about original loop iteration values. Add a getTruncateOrSignExtend method to ScalarEvolution, following getTruncateOrZeroExtend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64918 91177308-0d34-0410-b5e6-96231b3b80d8	2009-02-18 17:22:41 +00:00
Dan Gohman	74786c0f43	Rename IndVarsSimplify to IndVarSimplify, to be consistent with the name used in the code that these tests are for. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64624 91177308-0d34-0410-b5e6-96231b3b80d8	2009-02-16 00:56:15 +00:00

Author

SHA1

Message

Date

Dan Gohman

f5a309e989

Use a sign-extend instead of a zero-extend when promoting a

trip count value when the original loop iteration condition is
signed and the canonical induction variable won't undergo signed
overflow. This isn't required for correctness; it just preserves
more information about original loop iteration values.

Add a getTruncateOrSignExtend method to ScalarEvolution,
following getTruncateOrZeroExtend.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64918 91177308-0d34-0410-b5e6-96231b3b80d8

2009-02-18 17:22:41 +00:00

Dan Gohman

74786c0f43

Rename IndVarsSimplify to IndVarSimplify, to be consistent with

the name used in the code that these tests are for.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64624 91177308-0d34-0410-b5e6-96231b3b80d8

2009-02-16 00:56:15 +00:00

2 Commits