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76e8d46c1b
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1795 Commits

Author SHA1 Message Date
Owen Anderson
76e8d46c1b Remove an unused method. 
llvm-svn: 37402
 2007-06-03 05:58:25 +00:00
Owen Anderson
d7388dc4ce There's no need to have an Expression class... Value works just as well! This simplifies a lot of code. 
llvm-svn: 37401
 2007-06-03 05:55:58 +00:00
Devang Patel
bdacf6c9c9 Insert new instructions in AliasSet. 
llvm-svn: 37390
 2007-06-01 22:15:31 +00:00
Owen Anderson
fadd9e4a7a clean() needs to process things in topological order. 
llvm-svn: 37389
 2007-06-01 22:00:37 +00:00
Owen Anderson
da27462cea Fix Expression comparison, which in turn fixes a value numbering error. 
llvm-svn: 37386
 2007-06-01 17:34:47 +00:00
Owen Anderson
6e39e65e7f Add a topological sort function. 
llvm-svn: 37376
 2007-05-31 22:44:11 +00:00
Owen Anderson
919ee81e51 Attempt to fix up phi_translate. 
llvm-svn: 37366
 2007-05-31 00:42:15 +00:00
Devang Patel
044601033f Fix typo. 
llvm-svn: 37360
 2007-05-30 15:29:37 +00:00
Chris Lattner
fd963f9138 Fix Transforms/ScalarRepl/2007-05-29-MemcpyPreserve.ll and the second 
half of PR1421, by not decimating structs with holes that are the source and
destination of a memcpy.

llvm-svn: 37358
 2007-05-30 06:11:23 +00:00
Owen Anderson
328c980fad Fix a typo 
llvm-svn: 37350
 2007-05-29 23:34:14 +00:00
Owen Anderson
0f46c29ffd Re-fix a bug, where I was now being too aggressive. 
llvm-svn: 37348
 2007-05-29 23:26:30 +00:00
Owen Anderson
cfeeaac401 Use proper debugging facilities so other people don't have to look at my commented-out 
debugging lines.

llvm-svn: 37347
 2007-05-29 23:15:21 +00:00
Owen Anderson
1e1d693893 Comment debug code out that I accidentally uncommented last time. 
llvm-svn: 37346
 2007-05-29 22:43:03 +00:00
Owen Anderson
707e37c6a6 Add a place where I missed using the maximal set. Note that using the maximal 
set this way is _SLOW_.  Somewhere down the line, I'll look at speeding it up.

llvm-svn: 37345
 2007-05-29 22:35:41 +00:00
Owen Anderson
83bd7bcf6c Very first part of a GVN-PRE implementation. It currently performs a bunch of analysis, and nothing more. It is also quite slow for the moment. However, 
it should give a sense of what's going on.

llvm-svn: 37343
 2007-05-29 21:53:49 +00:00
Chris Lattner
8d43dc619d Fix PR1446 by not scalarrepl'ing giant structures. 
llvm-svn: 37326
 2007-05-24 18:43:04 +00:00
Chris Lattner
4cc07421ee fix a miscompilation when passing a float through varargs 
llvm-svn: 37297
 2007-05-23 01:17:04 +00:00
Chris Lattner
dda5066a5e Fix Transforms/InstCombine/2007-05-18-CastFoldBug.ll, a bug that devastates 
objc code due to the way the FE lowers objc message sends.

llvm-svn: 37256
 2007-05-19 06:51:32 +00:00
Chris Lattner
a13d75f270 Handle negative strides much more optimally. This compiles X86/lsr-negative-stride.ll 
into:

_t:
        movl 8(%esp), %ecx
        movl 4(%esp), %eax
        cmpl %ecx, %eax
        je LBB1_3       #bb17
LBB1_1: #bb
        cmpl %ecx, %eax
        jg LBB1_4       #cond_true
LBB1_2: #cond_false
        subl %eax, %ecx
        cmpl %ecx, %eax
        jne LBB1_1      #bb
LBB1_3: #bb17
        ret
LBB1_4: #cond_true
        subl %ecx, %eax
        cmpl %ecx, %eax
        jne LBB1_1      #bb
        jmp LBB1_3      #bb17

instead of:

_t:
        subl $4, %esp
        movl %esi, (%esp)
        movl 12(%esp), %ecx
        movl 8(%esp), %eax
        cmpl %ecx, %eax
        je LBB1_4       #bb17
LBB1_1: #bb.outer
        movl %ecx, %edx
        negl %edx
LBB1_2: #bb
        cmpl %ecx, %eax
        jle LBB1_5      #cond_false
LBB1_3: #cond_true
        addl %edx, %eax
        cmpl %ecx, %eax
        jne LBB1_2      #bb
LBB1_4: #bb17
        movl (%esp), %esi
        addl $4, %esp
        ret
LBB1_5: #cond_false
        movl %ecx, %edx
        subl %eax, %edx
        movl %eax, %esi
        addl %esi, %esi
        cmpl %ecx, %esi
        je LBB1_4       #bb17
LBB1_6: #cond_false.bb.outer_crit_edge
        movl %edx, %ecx
        jmp LBB1_1      #bb.outer

llvm-svn: 37252
 2007-05-19 01:22:21 +00:00
Devang Patel
6e8f1aa332 Fix PR1431 
Test case at Transformations/SCCP/2007-05-16-InvokeCrash.ll

llvm-svn: 37185
 2007-05-17 22:10:15 +00:00
Chris Lattner
dfc6f4a06c Fix Transforms/InstCombine/2007-05-14-Crash.ll 
llvm-svn: 37057
 2007-05-15 00:16:00 +00:00
Dan Gohman
7616b6f30c Correct a few comments. 
llvm-svn: 37034
 2007-05-14 14:31:17 +00:00
Chris Lattner
119ece07be significantly improve debug output of lsr 
llvm-svn: 36996
 2007-05-11 22:40:34 +00:00
Dan Gohman
167379e73a Fix typos. 
llvm-svn: 36994
 2007-05-11 21:10:54 +00:00
Dan Gohman
2e4ac0dea5 This patch extends the LoopUnroll pass to be able to unroll loops 
with unknown trip counts. This is left off by default, and a
command-line option enables it. It also begins to separate loop
unrolling into a utility routine; eventually it might be made usable
from other passes.

It currently works by inserting conditional branches between each
unrolled iteration, unless it proves that the trip count is a
multiple of a constant integer > 1, which it currently only does in
the rare case that the trip count expression is a Mul operator with
a ConstantInt operand. Eventually this information might be provided
by other sources, for example by a pass that peels/splits the loop
for this purpose.

llvm-svn: 36990
 2007-05-11 20:53:41 +00:00
Chris Lattner
3936efb43b fix regressions from my previous checking, including 
Transforms/InstCombine/2006-12-08-ICmp-Combining.ll

llvm-svn: 36989
 2007-05-11 16:58:45 +00:00
Chris Lattner
f7adc33cbd fix Transforms/InstCombine/2007-05-10-icmp-or.ll 
llvm-svn: 36984
 2007-05-11 05:55:56 +00:00
Devang Patel
1f12d0b50c Fix PR1333 
Testcases :
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049451.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049452.html

llvm-svn: 36955
 2007-05-09 08:24:12 +00:00
Dan Gohman
7459c19c81 Fix various whitespace inconsistencies. 
llvm-svn: 36936
 2007-05-08 15:19:19 +00:00
Dan Gohman
e9789171b0 Correct the comment for ApproximateLoopSize to reflect what it actually does. 
llvm-svn: 36935
 2007-05-08 15:14:19 +00:00
Dale Johannesen
842aef302e Don't generate branch to entry block. 
llvm-svn: 36917
 2007-05-08 01:01:04 +00:00
Nick Lewycky
c2306ff5b4 Fix typo in comment. 
llvm-svn: 36873
 2007-05-06 13:37:16 +00:00
Chris Lattner
619ffa3881 Fix a bug in my previous patch 
llvm-svn: 36857
 2007-05-06 07:24:03 +00:00
Chris Lattner
26c55e2dda Implement Transforms/InstCombine/cast_ptr.ll 
llvm-svn: 36809
 2007-05-05 22:41:33 +00:00
Chris Lattner
46b06d19d4 wrap long lines 
llvm-svn: 36807
 2007-05-05 22:32:24 +00:00
Chris Lattner
abff2ede40 Fix Transforms/LoopUnroll/2007-05-05-UnrollMiscomp.ll and PR1385. 
If we have a LCSSA, only modify the input value if the inval was defined
by an instruction in the loop.  If defined by something before the loop,
it is still valid.

llvm-svn: 36784
 2007-05-05 18:49:57 +00:00
Chris Lattner
fba294126e make a temporary for *SI, no functionality change. 
llvm-svn: 36782
 2007-05-05 18:36:36 +00:00
Chris Lattner
750321383f Fix InstCombine/2007-05-04-Crash.ll and PR1384 
llvm-svn: 36775
 2007-05-05 01:59:31 +00:00
Dan Gohman
a97484da91 Use IntrinsicInst to test for prefetch instructions, which is ever so 
slightly nicer than using CallInst with an extra check; thanks Chris.

llvm-svn: 36743
 2007-05-04 14:59:09 +00:00
Dan Gohman
e4d5ae9fcd Allow strength reduction to make use of addressing modes for the 
address operand in a prefetch intrinsic.

llvm-svn: 36713
 2007-05-03 23:20:33 +00:00
Devang Patel
cd45427a87 Drop 'const' 
llvm-svn: 36662
 2007-05-03 01:11:54 +00:00
Devang Patel
8ee9065162 Use 'static const char' instead of 'static const int'. 
Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.

llvm-svn: 36652
 2007-05-02 21:39:20 +00:00
Devang Patel
38a66bc82e Do not use typeinfo to identify pass in pass manager. 
llvm-svn: 36632
 2007-05-01 21:15:47 +00:00
Chris Lattner
5cb586acf5 fix a bug triggered by 403.gcc 
llvm-svn: 36527
 2007-04-28 05:27:36 +00:00
Chris Lattner
13b1e24f41 Fix several latent bugs in EmitGEPOffset that didn't manifest with its 
previous clients.  This fixes MallocBench/gs

llvm-svn: 36525
 2007-04-28 04:52:43 +00:00
Chris Lattner
22d3205e80 uhn zap cvs 
llvm-svn: 36523
 2007-04-28 03:50:56 +00:00
Chris Lattner
56ac7ba950 Implement PR1345 and Transforms/InstCombine/bitcast-gep.ll 
llvm-svn: 36521
 2007-04-28 00:57:34 +00:00
Chris Lattner
e0fe3b5c35 refactor some code relating to pointer cast xforms, pulling it out of the codepath 
for unrelated casts.

llvm-svn: 36511
 2007-04-27 17:44:50 +00:00
Zhou Sheng
8c150f133c Using APInt more efficiently. 
llvm-svn: 36475
 2007-04-26 16:42:07 +00:00
Devang Patel
e5765bd115 Mem2Reg does not need TargetData. 
llvm-svn: 36444
 2007-04-25 18:32:35 +00:00