llvm/test/Transforms/JumpThreading, branch release_27http://llvm.orghttps://git.amat.us/llvm/atom/test/Transforms/JumpThreading?h=release_272010-02-15T20:47:49Zfix PR6305 by handling BlockAddress in a helper function2010-02-15T20:47:49ZChris Lattnersabre@nondot.org2010-02-15T20:47:49Zurn:sha1:37914c8e83c43d710925263b66014159f03fa355
called by jump threading.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96263 91177308-0d34-0410-b5e6-96231b3b80d8
Make jump threading honor x|undef -> true and x&undef -> false,2010-02-11T04:40:44ZChris Lattnersabre@nondot.org2010-02-11T04:40:44Zurn:sha1:1e452650c6044735b6aa922d41736bda5721adcc
instead of considering x|undef -> x, which may not be true.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95850 91177308-0d34-0410-b5e6-96231b3b80d8
third bug from PR6119: the xor dupe extension allows2010-01-23T19:21:31ZChris Lattnersabre@nondot.org2010-01-23T19:21:31Zurn:sha1:d668839cb9b5db6865fd98e5e7dfccd64abf3e95
for arbitrary terminators in predecessors, don't assume
it is a conditional or uncond branch. The testcase shows
an example where they can happen with switches.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94323 91177308-0d34-0410-b5e6-96231b3b80d8
add an early out to ProcessBranchOnXOR to speed it up,2010-01-23T19:16:25ZChris Lattnersabre@nondot.org2010-01-23T19:16:25Zurn:sha1:2dd7657a5b063e6f77c34f418b7e23654b6fe4a0
handle the case when we can infer an input to the xor
from all inputs that agree, instead of going into an
infinite loop. Another part of PR6199
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94321 91177308-0d34-0410-b5e6-96231b3b80d8
fix a crash in jump threading, PR61192010-01-23T18:56:07ZChris Lattnersabre@nondot.org2010-01-23T18:56:07Zurn:sha1:8231fd1e6ca940511843381ea5f0dbfbc740b1e6
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94319 91177308-0d34-0410-b5e6-96231b3b80d8
1) Use the new SimplifyInstructionsInBlock routine instead of the copy2010-01-12T20:41:47ZChris Lattnersabre@nondot.org2010-01-12T20:41:47Zurn:sha1:972a46c96a06ecb0e8ce73c796c313175abe76bb
in JT.
2) When cloning blocks for PHI or xor conditions, use
instsimplify to simplify the code as we go. This allows us to
squish common cases early in JT which opens up opportunities for
subsequent iterations, and allows it to completely simplify the
testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93253 91177308-0d34-0410-b5e6-96231b3b80d8
Teach jump threading to duplicate small blocks when the branch2010-01-12T02:07:17ZChris Lattnersabre@nondot.org2010-01-12T02:07:17Zurn:sha1:2249a0b1bd0941e61c0b87f2f64a5c8cab45f14c
condition is a xor with a phi node. This eliminates nonsense
like this from 176.gcc in several places:
LBB166_84:
testl %eax, %eax
- setne %al
- xorb %cl, %al
- notb %al
- testb $1, %al
- je LBB166_85
+ je LBB166_69
+ jmp LBB166_85
This is rdar://7391699
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93221 91177308-0d34-0410-b5e6-96231b3b80d8
fix PR56982009-12-06T17:17:23ZChris Lattnersabre@nondot.org2009-12-06T17:17:23Zurn:sha1:08bc2701a22cae61d202c0960a390d8410434e5c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90708 91177308-0d34-0410-b5e6-96231b3b80d8
fix PR5640 by tracking whether a block is the header of a loop more2009-12-01T06:04:43ZChris Lattnersabre@nondot.org2009-12-01T06:04:43Zurn:sha1:46875c0bfb77880ba4120eeed7caca7f1f7c1f69
precisely, which prevents us from infinitely peeling the loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90211 91177308-0d34-0410-b5e6-96231b3b80d8
typo2009-11-12T09:44:17ZGabor Greifggreif@gmail.com2009-11-12T09:44:17Zurn:sha1:8bedf029f05e2fa9b1c4e92f4ea3a4d9af961c83
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86980 91177308-0d34-0410-b5e6-96231b3b80d8