Commit Graph

138 Commits

Author SHA1 Message Date
Chris Lattner
ffba5821ee Fix PR2256, yet another miscompilation in simplifycfg of i
multiple return values.

Bill, please pull this into Tak.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50332 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-28 00:19:07 +00:00
Nick Lewycky
280a6e607d Remove 'unwinds to' support from mainline. This patch undoes r47802 r47989
r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50265 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-25 16:53:59 +00:00
Chris Lattner
c9e495c534 Split some code out of the main SimplifyCFG loop into its own function.
Fix said code to handle merging return instructions together correctly
when handling multiple return values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50199 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-24 00:01:19 +00:00
Gabor Greif
051a950000 API changes for class Use size reduction, wave 1.
Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49277 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-06 20:25:17 +00:00
Dan Gohman
882d87d168 Check to see if a two-entry PHI block can be simplified
before trying to merge the block into its predecessors.
This allows two-entry-phi-return.ll to be simplified
into a single basic block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48252 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-11 21:53:06 +00:00
Nick Lewycky
9be3c97183 Turn unwind_to into "unwinds to".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48123 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-10 02:20:00 +00:00
Nick Lewycky
3f4cc3101e Firstly, having a BranchInst isn't exclusive with having an unwind_to.
Secondly, we have to check whether the branch is actually pointing to the block
with the unwind in it. We could have gotten here because of the unwind_to alone.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48099 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-09 07:50:37 +00:00
Nick Lewycky
db96ae9607 A BB that unwind_to an "unwind" inst is that same as one that doesn't unwind_to
at all.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48096 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-09 07:36:38 +00:00
Nick Lewycky
6af31aab63 Update the inliner and simplifycfg to handle unwind_to.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48086 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-09 05:10:13 +00:00
Anton Korobeynikov
07e6e56f57 Make Transforms to be 4.3 warnings-clean
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47371 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 11:26:25 +00:00
Chris Lattner
8244243a31 switch simplifycfg from using vectors for most things to smallvectors,
this speeds it up 2.3% on eon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47261 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-18 07:42:56 +00:00
Chris Lattner
3d73bce2d0 don't hoist FP additions into unconditional adds + selects. This
could theoretically introduce a trap, but is also a performance issue.
This speeds up ptrdist/ks by 8%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45533 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-03 07:25:26 +00:00
Chris Lattner
4ee451de36 Remove attribution from file headers, per discussion on llvmdev.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 20:36:04 +00:00
Devang Patel
01666bf74b If succ has succ itself as one of the predecessors then do
not merge current bb and succ even if bb's terminator is
unconditional branch to succ.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45305 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 01:32:53 +00:00
Duncan Sands
dc024674ff Fix PR1146: parameter attributes are longer part of
the function type, instead they belong to functions
and function calls.  This is an updated and slightly
corrected version of Reid Spencer's original patch.
The only known problem is that auto-upgrading of
bitcode files doesn't seem to work properly (see
test/Bitcode/AutoUpgradeIntrinsics.ll).  Hopefully
a bitcode guru (who might that be? :) ) will fix it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44359 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 13:23:08 +00:00
David Greene
52eec54820 New CallInst interface to address GLIBCXX_DEBUG errors caused by
indexing an empty std::vector.

Updates to all clients.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40660 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-01 03:43:44 +00:00
Dan Gohman
fa73ea2d9f Minor comment cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37321 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-24 14:36:04 +00:00
Chris Lattner
decb0ca18b remove use of Instruction::getNext
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36199 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-17 17:47:54 +00:00
Chris Lattner
c995123182 reduce use of std::set
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35576 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-02 01:44:59 +00:00
Dan Gohman
ecb7a77885 Change uses of Function::front to Function::getEntryBlock for readability.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35265 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-22 16:38:57 +00:00
Reid Spencer
e1c99d4c69 Make sorting of ConstantInt be APInt clean through use of ult function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34853 91177308-0d34-0410-b5e6-96231b3b80d8
2007-03-02 23:01:14 +00:00
Chris Lattner
93e985f1b1 Eliminate use of ctors that take vectors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34219 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-13 02:10:56 +00:00
Chris Lattner
86cc423555 simplify code by using Value::takeName
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34177 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-11 01:37:51 +00:00
Chris Lattner
79066fa6ac Adjust #includes to match movement of constant folding code from transformutils to libanalysis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33680 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-30 23:46:24 +00:00
Reid Spencer
c10305743c For PR1043:
This is the final patch for this PR. It implements some minor cleanup
in the use of IntegerType, to wit:
1. Type::getIntegerTypeMask -> IntegerType::getBitMask
2. Type::Int*Ty changed to IntegerType* from Type*
3. ConstantInt::getType() returns IntegerType* now, not Type*

This also fixes PR1120.

Patch by Sheng Zhou.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33370 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-19 21:13:56 +00:00
Chris Lattner
42a7551725 rename Type::isIntegral to Type::isInteger, eliminating the old Type::isInteger.
rename Type::getIntegralTypeMask to Type::getIntegerTypeMask.

This makes naming much more consistent.  For example, there are now no longer any
instances of IntegerType that are not considered isInteger! :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33225 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-15 02:27:26 +00:00
Chris Lattner
4d5f508318 Eliminate calls to isInteger, generalizing code and tightening checks as needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33218 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-15 01:55:30 +00:00
Reid Spencer
579dca12c2 Implement review feedback for the ConstantBool->ConstantInt merge. Chris
recommended that getBoolValue be replaced with getZExtValue and that
get(bool) be replaced by get(const Type*, uint64_t). This implements
those changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33110 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-12 04:24:46 +00:00
Reid Spencer
4fe16d607d Rename BoolTy as Int1Ty. Patch by Sheng Zhou.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33076 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-11 18:21:29 +00:00
Zhou Sheng
6b6b6ef167 For PR1043:
Merge ConstantIntegral and ConstantBool into ConstantInt.
Remove ConstantIntegral and ConstantBool from LLVM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33073 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-11 12:24:14 +00:00
Reid Spencer
e4d87aa2de For PR950:
This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32751 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-23 06:05:41 +00:00
Reid Spencer
3da59db637 For PR950:
The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31931 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-27 01:05:10 +00:00
Bill Wendling
0d45a096cf Remove #include <iostream> and use llvm_* streams instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31925 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-26 10:17:54 +00:00
Chris Lattner
822a879983 Do not convert massive blocks on phi nodes into select statements. Instead
only do these transformations if there are a small number of phi's.
This speeds up Ptrdist/ks from 2.35s to 2.19s on my mac pro.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31853 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-18 19:19:36 +00:00
Reid Spencer
3822ff5c71 For PR950:
This patch converts the old SHR instruction into two instructions,
AShr (Arithmetic) and LShr (Logical). The Shr instructions now are not
dependent on the sign of their operands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31542 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-08 06:47:33 +00:00
Reid Spencer
3ed469ccd7 For PR786:
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-02 20:25:50 +00:00
Chris Lattner
120bc21576 Fix SimplifyCFG/2006-10-29-InvokeCrash.ll, a crash compiling QT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31284 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-29 21:21:20 +00:00
Reid Spencer
b83eb6447b For PR950:
This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31063 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20 07:07:24 +00:00
Chris Lattner
b74b181630 Fix SimplifyCFG/2006-10-19-UncondDiv.ll by disabling a bad xform.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31061 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20 00:42:07 +00:00
Chris Lattner
8cfe6335e4 Fix PR867 (and maybe 868) and testcsae:
Transforms/SimplifyCFG/2006-08-03-Crash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29515 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-03 21:40:24 +00:00
Chris Lattner
7f2e1dd5d4 Fix an infinite loop on Transforms/SimplifyCFG/2006-06-12-InfLoop.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28758 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-12 20:18:01 +00:00
Chris Lattner
a0fcc3ee3f remove some dead code identified by coverity
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28289 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-14 18:45:44 +00:00
Chris Lattner
36a169e1a3 remove dead variables
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28286 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-14 18:33:57 +00:00
Chris Lattner
299520de7c Fix Transforms/SimplifyCFG/2006-02-17-InfiniteUnroll.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26275 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-18 00:33:17 +00:00
Chris Lattner
86a5484079 Add explicit #includes of <iostream>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25509 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-22 22:53:01 +00:00
Chris Lattner
8e75ee212f Fix SimplifyCFG/2005-12-03-IncorrectPHIFold.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24581 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-03 18:25:58 +00:00
Chris Lattner
7a66e686fe Clean up the code a bit. Use isInstructionTriviallyDead to be more aggressive
and more correct than use_empty().  This fixes PR635 and
SimplifyCFG/2005-10-02-InvokeSimplify.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23616 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-03 23:43:43 +00:00
Chris Lattner
b60e0815df remove some debugging code
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23411 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-23 18:49:09 +00:00
Chris Lattner
263d1e469d Fold two consequtive branches that share a common destination between them.
This implements SimplifyCFG/branch-fold.ll, and is useful on ?:/min/max heavy
code


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23410 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-23 18:47:20 +00:00
Chris Lattner
055dc102e9 simplify some logic further
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23408 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-23 07:23:18 +00:00