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4 Commits

Author SHA1 Message Date
Jingyue Wu 2b353a9522 [ReassociateGEP] Update tests to allow missing "inbounds" on certain GEPs. 
With r275532 fixing miscompilation of GVN, "inbounds" on certain GEPs in these
tests cannot be preserved any more. Left a TODO in the tests for future
reference.

llvm-svn: 275596
 2016-07-15 18:47:17 +00:00
David Majnemer 959a6623b5 XFAIL two SeparateConstOffsetFromGEP tests 
They appear to have relied on bugs hidden in copyIRFlags/andIRFlags.

This has been filed as PR28564.

llvm-svn: 275533
 2016-07-15 05:37:22 +00:00
Jingyue Wu 13a80eaceb [SeparateConstOffsetFromGEP] strengthen the inbounds attribute 
We used to be over-conservative about preserving inbounds. Actually, the second
GEP (which applies the constant offset) can inherit the inbounds attribute of
the original GEP, because the resultant pointer is equivalent to that of the
original GEP. For example,

  x  = GEP inbounds a, i+5
    =>
  y = GEP a, i               // inbounds removed
  x = GEP inbounds y, 5      // inbounds preserved

llvm-svn: 244937
 2015-08-13 18:48:49 +00:00
Matt Arsenault 5eb5eb59fc AMDGPU: Fix some places missed in rename 
llvm-svn: 240143
 2015-06-19 17:39:03 +00:00