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
Eli Friedman