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Chris Lattner 94fbdf3814 Fix PR8728, a miscompilation I recently introduced. When optimizing

memcpy's like:
  memcpy(A, B)
  memcpy(A, C)

we cannot delete the first memcpy as dead if A and C might be aliases.
If so, we actually get:

  memcpy(A, B)
  memcpy(A, A)

which is not correct to transform into:

  memcpy(A, A)

This patch was heavily influenced by Jakub Staszak's patch in PR8728, thanks
Jakub!

llvm-svn: 120974

2010-12-06 01:48:06 +00:00

const-pointers.ll

Make BasicAliasAnalysis a normal AliasAnalysis implementation which

2010-10-18 18:04:47 +00:00

crash.ll

clean up DSE tests, removing some poorly reduced and useless old test,

2010-11-30 01:00:34 +00:00

dg.exp

…

free.ll

Enhance DSE to handle the case where a free call makes more than

2010-11-12 02:19:17 +00:00