c93cffb590
New EarlyCSE tests for CSE-ing across commutativity.
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llvm-svn: 165510
2012-10-09 16:58:13 +00:00
c8cbd06947
Fix regression from r151466: an we can't replace uses of an instruction reachable from the entry block with uses of an instruction not reachable from the entry block. PR12231.
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llvm-svn: 152595
2012-03-13 01:06:07 +00:00
924f9a671d
Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed.
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Patch reviewed by Daniel Dunbar. It will be followed by additional cleanup patches.
llvm-svn: 150664
2012-02-16 06:28:33 +00:00
6a144a2227
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic.
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llvm-svn: 145171
2011-11-27 06:54:59 +00:00
02e737b08e
Move "atomic" and "volatile" designations on instructions after the opcode
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of the instruction.
Note that this change affects the existing non-atomic load and store
instructions; the parser now accepts both forms, and the change is noted
in the release notes.
llvm-svn: 137527
2011-08-12 22:50:01 +00:00
bde6ec1db6
Duncan deftly points out that readnone functions aren't
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invalidated by stores, so they can be handled as 'simple'
operations.
llvm-svn: 122785
2011-01-03 23:38:13 +00:00
9e5e9ed79a
earlycse can do trivial with-a-block dead store
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elimination as well. This deletes 60 stores in 176.gcc
that largely come from bitfield code.
llvm-svn: 122736
2011-01-03 04:17:24 +00:00
e0e32a9ef0
now that loads are in their own table, we can implement
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store->load forwarding. This allows EarlyCSE to zap 600 more
loads from 176.gcc.
llvm-svn: 122732
2011-01-03 03:46:34 +00:00
0446bb23f8
add a testcase for readonly call CSE
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llvm-svn: 122730
2011-01-03 03:33:47 +00:00
b9a8efc960
Teach EarlyCSE to do trivial CSE of loads and read-only calls.
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On 176.gcc, this catches 13090 loads and calls, and increases the
number of simple instructions CSE'd from 29658 to 36208.
llvm-svn: 122727
2011-01-03 03:18:43 +00:00
8fac5db251
add DEBUG and -stats output to earlycse.
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Teach it to CSE the rest of the non-side-effecting instructions.
llvm-svn: 122716
2011-01-02 23:19:45 +00:00
18ae5436b1
Enhance earlycse to do CSE of casts, instsimplify and die.
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Add a testcase.
llvm-svn: 122715
2011-01-02 23:04:14 +00:00
Michael Ilseman