8f36402ac2
Nope, still breaks the release selfhost bots :(
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llvm-svn: 108153
2010-07-12 16:38:48 +00:00
07b695e052
Reapply the "or" half of r108136, which seems to be less problematic.
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llvm-svn: 108152
2010-07-12 16:15:48 +00:00
c719e8ae9e
Revert r108141 again, sigh.
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llvm-svn: 108148
2010-07-12 14:42:04 +00:00
f578c36035
Reapply 108136 with an ugly pasto fixed.
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llvm-svn: 108141
2010-07-12 13:44:00 +00:00
9675e759cf
Revert r108136 until I figure out why it broke selfhost.
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llvm-svn: 108139
2010-07-12 12:35:49 +00:00
35473faa50
instcombine: fold (x & y) | (~x & z) and (x & y) ^ (~x & z) into ((y ^ z) & x) ^ z which is one instruction shorter. (PR6773)
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before:
%and = and i32 %y, %x
%neg = xor i32 %x, -1
%and4 = and i32 %z, %neg
%xor = xor i32 %and4, %and
after:
%xor1 = xor i32 %z, %y
%and2 = and i32 %xor1, %x
%xor = xor i32 %and2, %z
llvm-svn: 108136
2010-07-12 11:54:45 +00:00
fc13a0343c
make these less sensitive to temporary naming.
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llvm-svn: 97799
2010-03-05 08:43:33 +00:00
8e2c471614
don't turn (A & (C0?-1:0)) | (B & ~(C0?-1:0)) -> C0 ? A : B
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for vectors. Codegen is generating awful code or segfaulting
in various cases (e.g. PR6204).
llvm-svn: 95058
2010-02-02 02:43:51 +00:00
9518869423
add one more bitfield optimization, allowing clang to generate
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good code on PR4216:
_test_bitfield: ## @test_bitfield
orl $32962, %edi
movl $4294941946, %eax
andq %rdi, %rax
ret
instead of:
_test_bitfield:
movl $4294941696, %ecx
movl %edi, %eax
orl $194, %edi
orl $32768, %eax
andq $250, %rdi
andq %rax, %rcx
movq %rdi, %rax
orq %rcx, %rax
ret
Evan is looking into the remaining andq+imm -> andl optimization.
llvm-svn: 93147
2010-01-11 06:55:24 +00:00
2d91231d82
implement an instcombine xform needed by clang's codegen
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on the example in PR4216. This doesn't trigger in the testsuite,
so I'd really appreciate someone scrutinizing the logic for
correctness.
llvm-svn: 92458
2010-01-04 06:03:59 +00:00
a67519be12
Fix logic error in previous commit. The != case needs to become an or, not an
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and.
llvm-svn: 92419
2010-01-02 16:14:56 +00:00
357d41b3c1
Optimize pointer comparison into the typesafe form, now that the backends will
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handle them efficiently. This is the opposite direction of the transformation
we used to have here.
llvm-svn: 92418
2010-01-02 15:25:44 +00:00
2e4be2c340
remove the instcombine transformations that are inserting nasty
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pointer to int casts that confuse later optimizations. See PR3351
for details.
This improves but doesn't complete fix 483.xalancbmk because llvm-gcc
does this xform in GCC's "fold" routine as well. Clang++ will do
better I guess.
llvm-svn: 92408
2010-01-02 00:31:05 +00:00
cd261c9c26
Implement PR5634.
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llvm-svn: 90046
2009-11-29 00:51:17 +00:00
683eed3286
reapply r85085 with a bugfix to avoid infinite looping.
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All of the 'demorgan' related xforms need to use
dyn_castNotVal, not m_Not.
llvm-svn: 85119
2009-10-26 15:40:07 +00:00
8014a728b9
Revert 85085. It causes infinite looping during llvm-gcc build.
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llvm-svn: 85090
2009-10-26 03:51:32 +00:00
2e6564d6ff
Implement PR3266 & PR5276, folding:
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not (or (icmp, icmp)) -> and(icmp, icmp)
llvm-svn: 85085
2009-10-26 01:06:31 +00:00
52880b29d2
convert or.ll to filecheck and merge or2 into it.
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llvm-svn: 85083
2009-10-25 23:47:55 +00:00
1880092722
Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
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input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.
llvm-svn: 81537
2009-09-11 18:01:28 +00:00
72a13d2476
Use opt -S instead of piping bitcode output through llvm-dis.
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llvm-svn: 81257
2009-09-08 22:34:10 +00:00
9737a63ed8
Change these tests to feed the assembly files to opt directly, instead
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of using llvm-as, now that opt supports this.
llvm-svn: 81226
2009-09-08 16:50:01 +00:00
5640bd186a
Remove llvm-upgrade and update test cases.
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llvm-svn: 47793
2008-03-01 09:15:35 +00:00
ede8c3b92c
For PR1319:
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Make use of the END. facility on all files > 1K so that we aren't wasting CPU
cycles searching for RUN: lines that we'll never find.
llvm-svn: 36059
2007-04-15 07:38:21 +00:00
91948d4cad
For PR1319:
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Upgrade tests to work with new llvm.exp version of llvm_runtest.
llvm-svn: 36013
2007-04-14 20:13:02 +00:00
83b3d82672
Regression is gone, don't try to find it on clean target.
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llvm-svn: 33296
2007-01-17 07:59:14 +00:00
Benjamin Kramer