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Author SHA1 Message Date
Dan Gohman
4ce9627e97 Fix a shufflevector instcombine that was emitting invalid masks indices 
when it meant to be emitting undef indices.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54417 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 18:17:32 +00:00
Evan Cheng
d756f8820a PR2535, not PR2355. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54416 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 18:06:48 +00:00
Evan Cheng
f5e25f32c7 Fix PR2355: bug in ChangeCompareStride. When the loop termination compare is the only use of its iv stride, the stride can be eliminated by moving it to another stride. If the scale is negative, swap the predicate instead of using a inverse predicate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54415 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 18:04:43 +00:00
Dan Gohman
165660e417 xchg does not modify FLAGS. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54411 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 15:52:50 +00:00
Dan Gohman
6da38a05f6 Clarify "node" vs. "value" in some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54409 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 15:18:10 +00:00
Chris Lattner
46bbad217b optimize a common idiom generated by clang for bitfield access, PR2638. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54408 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 07:35:52 +00:00
Bruno Cardoso Lopes
bbe51362d5 Added support for fp callee saved registers. 
Added fp register clobbering during calls.
Added AsmPrinter support for "fmask", a bitmask that indicates where on the 
stack the fp callee saved registers are.

Fixed the stack frame layout for Mips, now the callee saved regs 
are in the right stack location (a little documentation about how this
stack frame must look like is present in MipsRegisterInfo.cpp).
This was done using the method MipsRegisterInfo::adjustMipsStackFrame
To be more clear, these are examples of what is solves :  

1) FP and RA are also callee saved, and despite they aren't in CSI they 
   must be saved before the fp callee saved registers. 
2) The ABI requires that local varibles are allocated before the callee 
   saved register area, the opposite behavior from the default allocation.
3) CPU and FPU saved register area must be aligned independent of each
   other.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54403 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 06:14:43 +00:00
Chris Lattner
01924d00c7 stacker is really gone. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54400 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 05:57:58 +00:00
Chris Lattner
2a3cea1a6d remove stacker 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54398 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 05:56:52 +00:00
Chris Lattner
5af5f463e1 Zap sitofp/fptoui pairs. In all cases when the sign difference 
matters, the result is undefined anyway.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54396 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 05:13:06 +00:00
Nick Lewycky
b30591ec64 Reinstate this optimization, but without the miscompile. Thanks to Bill for 
tracking down that this was breaking llvm-gcc bootstrap on Linux.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54394 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 04:54:03 +00:00
Bill Wendling
5226698f67 Just grep for through the LL code instead of the ASM code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54389 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-06 00:10:32 +00:00
Bill Wendling
a37599bc7a Add ARM to the targets to build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54386 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 23:52:28 +00:00
Dan Gohman
1eac4e0844 Use strcpy instead of sprintf here. This avoids a GCC 4.3 format-string 
warning. There wasn't actually a problem here, because the contents of
the string are known.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54385 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 23:36:35 +00:00
Bill Wendling
201bf25f83 Add default architecture. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54384 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 23:36:00 +00:00
Dan Gohman
5a6c448a7e Pass the computed iteration count value to RewriteLoopExitValues 
instead of having it call getIterationCount again.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54380 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 22:34:21 +00:00
Bill Wendling
837f39b839 It's "a static", not "an static" 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54379 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 22:29:16 +00:00
Owen Anderson
24d79ba2ef Fix breakage on ARM/2008-04-10-ScavengerAssert.ll. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54378 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 22:24:40 +00:00
Bill Wendling
0b101b0399 Testcase for PR2629. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54377 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 22:23:59 +00:00
Evan Cheng
e9d5035838 Fix PR2620: Fix X86cmppd selection code so it expects operands to be v2f64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54376 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 22:19:15 +00:00
Evan Cheng
e3b8a48d32 Fix PR2596: out of bound reference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54375 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 21:51:46 +00:00
Owen Anderson
5d2f8072d4 Correctly handle replacement and removal of PHIs with one incoming register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54374 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 21:40:45 +00:00
Bill Wendling
021507be82 Revert r53282. This was causing a miscompile on Linux. Also, the transformation 
looks bogus. Please see PR2629 for details on why this is breaking things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54372 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 21:23:45 +00:00
Owen Anderson
71ac0be6bb Oops, we were already checking for dead phis. Handle this the proper way, then. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54371 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 21:18:51 +00:00
Owen Anderson
e7b8205e6e We don't need to update live intervals for dead PHIs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54369 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 20:51:26 +00:00
Chris Lattner
d3eda89f4c Expand acronyms, suggested by Walter Pawley 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54362 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 18:29:16 +00:00
Owen Anderson
3bc9c6f3e7 Remove the -disable-correct-folding option, which was ugly and is no longer needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54361 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 18:27:54 +00:00
Chris Lattner
ebec678055 Capitalize LLVM, suggested by Walt Pawley 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54360 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 18:21:08 +00:00
Owen Anderson
b6634e9e27 Update the remaining tests not to use -disable-correct-folding, and remove two 
that couldn't be updated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54359 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 18:19:14 +00:00
Owen Anderson
551ddf718c One more -disable-correct-folding case removed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54358 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 18:08:56 +00:00
Owen Anderson
2a1f07ea6a Remove another -disable-correct-folding use. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54357 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 18:05:58 +00:00
Owen Anderson
d6db225800 Eliminate another use of -disable-correct-folding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54356 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 18:03:01 +00:00
Owen Anderson
287b7b7ed7 This check is unnecessary, and getting rid of it removes a use of -disable-correct-folding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54355 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 17:52:54 +00:00
Owen Anderson
3888aa0b7d Remove the need for -disable-correct-folding from this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54354 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 17:49:52 +00:00
Dan Gohman
c3be0fd8c3 Fix the AsmWriter to not print extra spaces after parameter attributes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54351 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 15:51:44 +00:00
Dan Gohman
8f613f30a7 Trim #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54350 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 15:32:23 +00:00
Dan Gohman
430b8a22e2 Fix several const-correctness issues, resolving some -Wcast-qual warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54349 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 14:45:15 +00:00
Dan Gohman
ec89a364b8 Correct an assertion string. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54348 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 14:42:28 +00:00
Evan Cheng
4fa393aae1 Remove #if 0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54347 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 07:20:57 +00:00
Evan Cheng
068b4ff553 Fix PR2568: Fix bug that cause redudant kill marker after its live interval has been extended due to coalescing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54346 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 07:10:38 +00:00
Owen Anderson
59c0d4fcde Remove unneeded iteration. Thanks to Dan for the feedback. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54337 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 00:30:10 +00:00
Owen Anderson
6ac8df7f61 This option doesn't need to be a target option. It can be in SDISel instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54336 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-05 00:27:28 +00:00
Owen Anderson
2b85dc3544 Update these tests to work by disabling the new correct CFG generation. This flag should ONLY be used to for tests like these. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54334 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-04 23:55:29 +00:00
Owen Anderson
bd3ba461eb - Fix SelectionDAG to generate correct CFGs. 
- Add a basic machine-level dead block eliminator.

These two have to go together, since many other parts of the code generator are unable to handle the unreachable blocks otherwise created.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54333 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-04 23:54:43 +00:00
Eli Friedman
b42a626122 PR2621: Improvements to the SCEV AddRec binomial expansion. This 
version uses a new algorithm for evaluating the binomial coefficients 
which is significantly more efficient for AddRecs of more than 2 terms 
(see the comments in the code for details on how the algorithm works).  
It also fixes some bugs: it removes the arbitrary length restriction for 
AddRecs, it fixes the silent generation of incorrect code for AddRecs 
which require a wide calculation width, and it fixes an issue where we 
were incorrectly truncating the iteration count too far when evaluating 
an AddRec expression narrower than the induction variable.

There are still a few related issues I know of: I think there's 
still an issue with the SCEVExpander expansion of AddRec in terms of
the width of the induction variable used.  The hack to avoid generating 
too-wide integers shouldn't be necessary; instead, the callers should be 
considering the cost of the expansion before expanding it (in addition 
to not expanding too-wide integers, we might not want to expand 
expressions that are really expensive, especially when optimizing for 
size; calculating an length-17 32-bit AddRec currently generates about 250 
instructions of straight-line code on X86).  Also, for long 32-bit 
AddRecs on X86, CodeGen really sucks at scheduling the code.  I'm planning on 
filing follow-up PRs for these issues.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54332 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-04 23:49:06 +00:00
Dan Gohman
6f498b0a8e Fix SDISel lowering of PHI nodes to use ComputeValueVTs. 
This allows it to work correctly on aggregate values.
This fixes PR2623.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54331 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-04 23:42:46 +00:00
Dan Gohman
1f565bcff6 Fix SDISel lowering of zeroinitializer and undef to use ComputeValueVTs. 
This allows it to work correctly on nested aggregate values.
This fixes PR2625.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54330 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-04 23:30:41 +00:00
Dan Gohman
d0859943ac Add an assert to catch invalid VECTOR_SHUFFLE mask indices. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54329 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-04 23:09:15 +00:00
Bruno Cardoso Lopes
f7f3b50cd8 Mips ISelLowering cleanup : Removed old LowerCALL and FORMAL_ARGS helpers, they 
aren't used anyway, they also used to broke compiling when fastcc was specified for a
function, but not anymore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54316 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-04 07:12:52 +00:00
Bruno Cardoso Lopes
ea9d4d6ab0 Handle i32->f32 bitconvert results. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54315 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-08-04 06:44:31 +00:00