Chris Lattner
77a2a9d9da
Implement test/Regression/Transforms/GlobalConstifier/phi-select.llx
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This allows more globals to be marked constant, particularly global arrays.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15735 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-14 20:57:17 +00:00
Chris Lattner
a670c684a6
If we are extracting a block that has multiple successors that are the same
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block (common in a switch), make sure to remove extra edges in successor
blocks. This fixes CodeExtractor/2004-08-12-BlockExtractPHI.ll and should
be pulled into LLVM 1.3 (though the regression test need not be, as that
would require pulling in the LoopExtract.cpp changes).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15717 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-13 03:27:07 +00:00
Chris Lattner
337772832b
When we code extract some stuff, leave the codeRepl block in the place where
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the extracted code was, instead of putting it at the end of the function
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15716 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-13 03:17:39 +00:00
Chris Lattner
8528672e7e
"extract" the block extractor pass from bugpoint (haha)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15714 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-13 03:05:17 +00:00
Chris Lattner
eb6f18fe7c
Add value mapper support for select constant exprs. This should fix a bug
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Nate ran into when bugpointing siod. This fix should go into LLVM 1.3
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15712 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-13 02:43:19 +00:00
Chris Lattner
ee45f4cbe4
This patch makes the inliner refuse to inline functions that have alloca
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instructions in the body of the function (not the entry block). This fixes
test/Programs/SingleSource/Regression/C/2004-08-12-InlinerAndAllocas.c
and test/Programs/External/SPEC/CINT2000/176.gcc on zion.
This should obviously be pulled into 1.3.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15684 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-12 05:45:09 +00:00
Chris Lattner
b519efbafe
Fix code extraction of unwind blocks. This fixed bugs that bugpoint can
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run into. This should go into 1.3
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15679 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-12 03:17:02 +00:00
Chris Lattner
a5de823844
Hrm, this pass didn't compile. This bugfix should go into 1.3!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15676 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-12 02:44:23 +00:00
Chris Lattner
5dbef2207e
Fix InstCombine/2004-08-10-BoolSetCC.ll, a bug that is miscompiling
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176.gcc. Note that this is apparently not the only bug miscompiling gcc
though. :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15639 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-11 00:50:51 +00:00
Chris Lattner
b49f306bdf
Fix InstCombine/2004-08-09-RemInfLoop.llx
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This should go into the 1.3 branch
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15593 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-09 21:05:48 +00:00
Chris Lattner
54970c0328
Fix another really nasty regression that Anshu pointed out. In cases where
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dangling constant users were removed from a function, causing it to be dead,
we never removed the call graph edge from the external node to the function.
In most cases, this didn't cause a problem (by luck). This should definitely
go into 1.3
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15570 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-08 03:29:50 +00:00
Chris Lattner
68392422e6
Two fixes:
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1. Fix a REALLY nasty cyclic replacement issue that Anshu discovered, causing
nondeterminstic crashes and memory corruption.
2. For performance, don't go inserting constantexpr casts of GV pointers.
This should definitely go into 1.3
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15568 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-08 01:30:07 +00:00
Chris Lattner
5e2e27284b
This DEBUG is buggy. comment it out because it's not worth fixing. This
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should go into 1.3
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15567 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-08 01:27:56 +00:00
Alkis Evlogimenos
15876bb28c
Stop using getValues().
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15487 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-04 08:44:43 +00:00
Chris Lattner
1484089bbf
Fix a regression in InstCombine/xor.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15410 91177308-0d34-0410-b5e6-96231b3b80d8
2004-08-01 19:42:59 +00:00
Chris Lattner
1e5fdf8ba0
Expose this as a functionpass
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15369 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-31 10:01:58 +00:00
Misha Brukman
cb6267bc60
Fix De Morgan's name.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15343 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-30 12:50:08 +00:00
Chris Lattner
acd1f0fcb3
Start using the PatternMatcher a bit.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15342 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-30 07:50:03 +00:00
Misha Brukman
78c038d0cc
Fix #includes of i*.h => Instructions.h as per PR403.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15337 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-29 17:30:57 +00:00
Misha Brukman
47b14a4a6a
Fix #includes of i*.h => Instructions.h as per PR403.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15334 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-29 17:30:56 +00:00
Misha Brukman
d8e1eea678
Fix #includes of i*.h => Instructions.h as per PR403.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15328 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-29 17:05:13 +00:00
Alkis Evlogimenos
eb62bc77b6
Merge i*.h headers into Instructions.h as part of bug403.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15325 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-29 12:17:34 +00:00
Robert Bocchino
71698285e8
This change fixed a bug in the function visitMul. The prior version
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assumed that a constant on the RHS of a multiplication was either an
IntConstant or an FPConstant. It checked for an IntConstant and then,
if it did not find one, did a hard cast to an FPConstant. That code
would crash if the RHS were a ConstantExpr that was neither an
IntConstant nor an FPConstant. This version replaces the hard cast
with a dyn_cast. It performs the same way for IntConstants and
FPConstants but does nothing, instead of crashing, for constant
expressions.
The regression test for this change is 2004-07-27-ConstantExprMul.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15291 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-27 21:02:21 +00:00
Brian Gaeke
96d4bf7aee
Make the create...() functions for some of these passes return a FunctionPass *.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15276 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-27 17:43:21 +00:00
Chris Lattner
eaa243039b
Fix hoisting of void typed values, e.g. calls
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15263 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-27 07:38:32 +00:00
Chris Lattner
a000279a7d
Implement DeadStoreElim/alloca.llx by observing that allocas are dead at the
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end of the function (either return or unwind)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15232 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-26 06:14:11 +00:00
Chris Lattner
595ee7ec26
Throttle back indvar substitution from creating multiplies in loops. This is bad bad bad.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15227 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-26 02:47:12 +00:00
Chris Lattner
70e9b59b0e
* Substantially simplify how free instructions are handled (potentially fixing
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a bug in DSE).
* Delete dead operand uses iteratively instead of recursively, using a
SetVector.
* Defer deletion of dead operand uses until the end of processing, which means
we don't have to bother with updating the AliasSetTracker. This speeds up
DSE substantially.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15204 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-25 11:09:56 +00:00
Chris Lattner
a9e2f3d0ab
Free instructions kill values too. This implements DeadStoreElim/free.llx
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15199 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-25 07:58:38 +00:00
Chris Lattner
c47b6677ae
obvious fix
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15162 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-24 07:51:27 +00:00
Chris Lattner
0fb56afab1
This is a trivial dead store elimination pass. It very very simple and
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can be improved in many ways. But: stop laughing, even with -basicaa it
deletes 15% of the stores in 252.eon :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15101 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 08:00:28 +00:00
Chris Lattner
93c9587fbb
Update GC intrinsics to take a pointer to the object as well as a pointer
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to the field being updated. Patch contributed by Tobias Nurmiranta
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15097 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-22 05:51:13 +00:00
Brian Gaeke
7848e68c16
These files don't need to include <iostream> since they include "Support/Debug.h".
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15089 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 20:50:33 +00:00
Chris Lattner
f0cacc0ae7
* Further cleanup.
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* Test for whether bits are shifted out during the optzn.
If so, the fold is illegal, though it can be handled explicitly for setne/seteq
This fixes the miscompilation of 254.gap last night, which was a latent bug
exposed by other optimizer improvements.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15085 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 20:14:10 +00:00
Chris Lattner
5eb919405c
Make cast-cast code a bit more defensive
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"simplify" a bit of code for comparison/and folding
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15082 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 19:50:44 +00:00
Chris Lattner
e8a7e593e6
Remove special casing of pointers and treat them generically as integers of
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the appopriate size. This gives us the ability to eliminate int -> ptr -> int
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15063 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-21 04:27:24 +00:00
Chris Lattner
adfd32f8ee
Fix a serious code pessimization problem. If an inlined function has a single
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return, clone the 'ret' BB code into the block AFTER the inlined call, not the
other way around.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15030 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 05:45:24 +00:00
Chris Lattner
59a20773f8
Implement Transforms/InstCombine/IntPtrCast.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15029 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 05:21:00 +00:00
Chris Lattner
9ce300013d
Ignore instructions that are in trivially dead functions. This allows us
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to constify 14 globals instead of 4 in a trivial C++ testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15027 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 03:58:07 +00:00
Chris Lattner
67769e5efa
Implement InstCombine/GEPIdxCanon.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15024 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 01:48:15 +00:00
Chris Lattner
af17b1df84
Implement SimplifyCFG/BrUnwind.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15022 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 01:17:38 +00:00
Chris Lattner
bee7e7644b
Rewrite cast->cast elimination code completely based on the information we
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actually care about. Someday when the cast instruction is gone, we can do
better here, but this will do for now. This implements
instcombine/cast.ll:test17/18 as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15018 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-20 00:59:32 +00:00
Chris Lattner
8919cccc3d
Fix a performance regression from the CPR patch, simplify code
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14974 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-18 21:34:16 +00:00
Chris Lattner
96940cb522
Strip out and simplify some code. This also fixes the regression last
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night compiling cfrac. It did not realize that code like this:
int G; int *H = &G;
takes the address of G.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14973 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-18 19:56:20 +00:00
Chris Lattner
9db07b9307
Minor cleanup, no functionality change
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14972 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-18 18:59:44 +00:00
Reid Spencer
e95ff9afa0
Remove an if statement that would never be reached.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14968 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-18 08:41:47 +00:00
Reid Spencer
c88920df66
Delete a redundant if branch.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14967 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-18 08:34:52 +00:00
Reid Spencer
c3c2fdf5a8
Expand the coercion of constants to include the newly constant Globals.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14966 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-18 08:34:19 +00:00
Reid Spencer
5f0eb64079
Delete a no-op loop.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14965 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-18 08:32:43 +00:00
Reid Spencer
c3c92d834a
Expand the scope to include global values because they are now constants
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too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14964 91177308-0d34-0410-b5e6-96231b3b80d8
2004-07-18 08:32:10 +00:00