Chris Lattner
9f50341a96
don't turn (A & (C0?-1:0)) | (B & ~(C0?-1:0)) -> C0 ? A : B
...
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
Chris Lattner
85a6f02b94
add one more bitfield optimization, allowing clang to generate
...
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
Chris Lattner
ce3f5f3448
implement an instcombine xform needed by clang's codegen
...
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
Nick Lewycky
cda0109ec5
Fix logic error in previous commit. The != case needs to become an or, not an
...
and.
llvm-svn: 92419
2010-01-02 16:14:56 +00:00
Nick Lewycky
3cc8fe073a
Optimize pointer comparison into the typesafe form, now that the backends will
...
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
Chris Lattner
cf784992da
remove the instcombine transformations that are inserting nasty
...
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
Chris Lattner
d48ff7ea6a
Implement PR5634.
...
llvm-svn: 90046
2009-11-29 00:51:17 +00:00
Chris Lattner
7f9ddaf7e3
reapply r85085 with a bugfix to avoid infinite looping.
...
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
Evan Cheng
7dad155ec7
Revert 85085. It causes infinite looping during llvm-gcc build.
...
llvm-svn: 85090
2009-10-26 03:51:32 +00:00
Chris Lattner
192549ef70
Implement PR3266 & PR5276, folding:
...
not (or (icmp, icmp)) -> and(icmp, icmp)
llvm-svn: 85085
2009-10-26 01:06:31 +00:00
Chris Lattner
c88c01adb6
convert or.ll to filecheck and merge or2 into it.
...
llvm-svn: 85083
2009-10-25 23:47:55 +00:00
Dan Gohman
205b641954
Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
...
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
Dan Gohman
c95df8b6d8
Use opt -S instead of piping bitcode output through llvm-dis.
...
llvm-svn: 81257
2009-09-08 22:34:10 +00:00
Dan Gohman
8d84372836
Change these tests to feed the assembly files to opt directly, instead
...
of using llvm-as, now that opt supports this.
llvm-svn: 81226
2009-09-08 16:50:01 +00:00
Tanya Lattner
c072619922
Remove llvm-upgrade and update test cases.
...
llvm-svn: 47793
2008-03-01 09:15:35 +00:00
Reid Spencer
cdd728cca2
For PR1319:
...
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
Reid Spencer
c49d7dd886
For PR1319:
...
Upgrade tests to work with new llvm.exp version of llvm_runtest.
llvm-svn: 36013
2007-04-14 20:13:02 +00:00
Reid Spencer
4572ce85b0
Regression is gone, don't try to find it on clean target.
...
llvm-svn: 33296
2007-01-17 07:59:14 +00:00
