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Author SHA1 Message Date
Chris Lattner
833f25d79e move CannotBeNegativeZero to ValueTracking. Simplify some signbit comparisons. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51864 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-02 01:29:46 +00:00
Chris Lattner
173234a68f move ComputeMaskedBits, MaskedValueIsZero, and ComputeNumSignBits 
out of instcombine into a new file in libanalysis.  This also teaches
ComputeNumSignBits about the number of sign bits in a constantint.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51863 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-02 01:18:21 +00:00
Owen Anderson
009e4f7609 Fix two issues that Eli Friedman pointed out, where would misoptimized code like: 
char a[200];
init(a, a+200);

OR

int a[200];
char* b = (char*)a;
char* c = (char*)a;
foo(b, c);


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51850 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-01 22:26:26 +00:00
Owen Anderson
19d4d12ee0 Test for PR2401 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51849 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-01 21:55:55 +00:00
Owen Anderson
12cb36c115 Don't remove the memcpy when call slot substitution fails. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51848 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-01 21:52:16 +00:00
Owen Anderson
6bd15ce03f Remember to update the reverse non-local cache when cleaning up dirty entries. This fixes PR2397. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51846 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-01 21:03:52 +00:00
Owen Anderson
d8f34fa3d6 Make ping more aggressive in finding nonlocal caching errors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51845 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-01 20:51:41 +00:00
Anton Korobeynikov
80b74b4348 Prune empty dirs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51844 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-01 20:11:03 +00:00
Chris Lattner
b8d0b807fc add a predicate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51842 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-01 18:09:04 +00:00
Anton Korobeynikov
12a3f8302a Initialize members properly during construction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51841 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-01 16:22:49 +00:00
Duncan Sands
f413cdfb0b When simplifying a call to a bitcast function, tighten up 
the conditions for performing the transform when only the
function declaration is available: no longer allow turning
i32 into i64 for example.  Only allow changing between
pointer types, and between pointer types and integers of
the same size.  For return values ptr -> intptr was already
allowed; I added ptr -> ptr and intptr -> ptr while there.
As shown by a recent objc testcase, changing the way
parameters/return values are passed can be fatal when calling
code written in assembler that directly manipulates call
arguments and return values unless the transform has no
impact on the way they are passed at the codegen level.
While it is possible to imagine an ABI that treats integers
of pointer size differently to pointers, I don't think LLVM
supports any so the transform should now be safe while still
being useful.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51834 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-01 07:38:42 +00:00
Bruno Cardoso Lopes
bdbb750afe Fixed flag issue that was generating infinite loop while in list scheduling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51833 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-01 03:49:39 +00:00
Nick Lewycky
f4408e8c3e Add a standard for control-flow unreachable assertions in functions that return 
values, so as to avoid warnings on some platforms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51831 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 23:54:55 +00:00
Gabor Greif
48fb19a270 updates to some svn:ignore properties 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51829 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 22:59:42 +00:00
Chris Lattner
76931954f8 update this patch to handle an extraneous &1. This should be pulled 
into the 2.3 release branch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51824 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 19:50:53 +00:00
Dan Gohman
995be7d07a AsmWriter support for insertvalue/extractvalue. These instructions can 
now round-trip through assembly and bitcode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51823 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 19:12:39 +00:00
Dan Gohman
0aab28bf4c Improved bitcode support for insertvalue/extractvalue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51822 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 19:11:15 +00:00
Dan Gohman
8e6404180c Fix a copy+paste error in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51821 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 19:09:47 +00:00
Dan Gohman
35651cdf0b Fix some bugs with the handling of indices in insertvalue/extractvalue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51820 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 19:09:08 +00:00
Nick Lewycky
517e1f5cd7 Peer through sext/zext when looking for not(cmp). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51819 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 19:01:33 +00:00
Nick Lewycky
4914db09a5 Yay us! Every one of these examples turns into icmp/zext/ret. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51818 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 18:20:26 +00:00
Nick Lewycky
9419ddb289 Add more i1 optimizations. add, sub, mul, s/udiv on i1 are now simplified away. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51817 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 17:59:52 +00:00
Nick Lewycky
fd12a0b20b Adding i1 is always Xor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51816 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 17:10:28 +00:00
Mikhail Glushenkov
310d2eb202 Callback was not executed on OS X when it was a function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51814 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 13:43:21 +00:00
Chris Lattner
e56d946a38 Fix the CBE's handling of instructions whose result is an i1. Previously, 
we did not truncate the value down to i1 with (x&1).  This caused a problem
when the computation of x was nontrivial, for example, "add i1 1, 1" would 
return 2 instead of 0.

This makes the testcase compile into:

...
  llvm_cbe_t = (((llvm_cbe_r == 0u) + (llvm_cbe_r == 0u))&1);
  llvm_cbe_u = (((unsigned int )(bool )llvm_cbe_t));
...

instead of:

...
  llvm_cbe_t = ((llvm_cbe_r == 0u) + (llvm_cbe_r == 0u));
  llvm_cbe_u = (((unsigned int )(bool )llvm_cbe_t));
...

This fixes a miscompilation of mediabench/adpcm/rawdaudio/rawdaudio and
403.gcc with the CBE, regressions from LLVM 2.2. Tanya, please pull 
this into the release branch.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51813 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 09:23:55 +00:00
Dan Gohman
7e2dd6628e Factor several methods, including getInversePredicate and 
getSwappedPredicate, from ICmpInst and FCmpInst into common
methods in CmpInst. This allows CmpInsts to be manipulated
generically.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51810 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 02:47:54 +00:00
Dan Gohman
e4c67cdab4 Teach the DAGISelEmitter to not compute the variable_ops operand 
index for the input pattern in terms of the output pattern. Instead
keep track of how many fixed operands the input pattern actually
has, and have the input matching code pass the output-emitting
function that index value. This simplifies the code, disentangles
variables_ops from the support for predication operations, and
makes variable_ops more robust.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51808 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 02:11:25 +00:00
Dan Gohman
2830741866 Remove an unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51807 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 01:44:25 +00:00
Dan Gohman
81a0c0b44e IR, bitcode reader, bitcode writer, and asmparser changes to 
insertvalue and extractvalue to use constant indices instead of
Value* indices. And begin updating LangRef.html.

There's definately more to come here, but I'm checking this 
basic support in now to make it available to people who are
interested.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51806 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-31 00:58:22 +00:00
Evan Cheng
652f7ea955 Revert 51775. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51795 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 22:47:19 +00:00
Dan Gohman
8666cc3b99 Add an isAggregateType predicate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51794 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 22:40:06 +00:00
Evan Cheng
7645e574d2 Fix indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51793 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 22:39:32 +00:00
Evan Cheng
89df08c8a0 Fix indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51792 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 22:39:18 +00:00
Dan Gohman
11bf2ace55 Add an operator< for SmallVector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51791 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 22:37:47 +00:00
Owen Anderson
dbb8137c11 The coalescer doesn't need LiveVariables now that we have register use iterators. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51790 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 22:37:27 +00:00
Gabor Greif
ba2c487424 rewrite operand loops to use iterators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51789 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 21:24:22 +00:00
Mikhail Glushenkov
856e106d20 Make all help strings start in upper case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51788 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 21:14:10 +00:00
Owen Anderson
15a17f5481 Forgot to commit this file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51786 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 20:14:04 +00:00
Mikhail Glushenkov
74a0c28fba Fix the -opt switch and add a test case for it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51784 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 19:56:27 +00:00
Mikhail Glushenkov
18aac1c622 Fix indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51782 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 18:53:09 +00:00
Mikhail Glushenkov
7ef36069c8 Add a --dry-run option to llvmc2. Patch by Holger Schurig. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51781 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 18:48:52 +00:00
Owen Anderson
3947e4d142 Preserve the register coallescer, and update live intervals more correctly by triggering a renumbering after phi elimination. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51780 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 18:38:26 +00:00
Owen Anderson
427de86ada Since LCSSA switched over to DenseMap, we have to be more careful to avoid iterator invalidation. Fixes PR2385. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51777 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 17:31:01 +00:00
Evan Cheng
babf11f249 Patches for building llvm on Solaris x86. Contributed by Nathan Keynes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51775 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 17:16:20 +00:00
Matthijs Kooijman
33540adca5 Give a proper error message when a command line option is defined more than 
once (ie, at two different places in the source, not two times on the
commandline).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51771 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 13:26:11 +00:00
Matthijs Kooijman
494661c623 Use eraseFromParent() instead of doing that manually in two places. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51770 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 12:35:46 +00:00
Matthijs Kooijman
74b5e07cc4 Let Instruction::getOpcodeName() return something useful for the new 
insertvalue / extractvalue instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51766 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 10:31:54 +00:00
Bill Wendling
37a6134165 Add the "AsCheapAsAMove" flag to some 64-bit xor instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51761 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 06:47:04 +00:00
Mikhail Glushenkov
7329610dfa Add a --save-temps option. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51760 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 06:29:17 +00:00
Mikhail Glushenkov
a7d0ae34fb Add a check for side effect-free options (specified only in the OptionList). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51759 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-05-30 06:28:37 +00:00