c13c7b9376
Move the ConstantFoldLoadThroughGEPConstantExpr function out of the InstCombine
...
pass.
llvm-svn: 23444
2005-09-26 05:27:10 +00:00
499e33646e
remove some debugging code
...
llvm-svn: 23411
2005-09-23 18:49:09 +00:00
c59a371d45
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
llvm-svn: 23410
2005-09-23 18:47:20 +00:00
3a978bf66d
simplify some logic further
...
llvm-svn: 23408
2005-09-23 07:23:18 +00:00
cc14ebc17b
pull a bunch of logic out of SimplifyCFG into a helper fn
...
llvm-svn: 23407
2005-09-23 06:39:30 +00:00
6c70106053
Start threading across blocks with code in them, so long as the code does
...
not define a value that is used outside of it's block. This catches many
more simplifications, e.g. 854 in 176.gcc, 137 in vpr, etc.
This implements branch-phi-thread.ll:test3.ll
llvm-svn: 23397
2005-09-20 01:48:40 +00:00
f0bd8d0107
Implement merging of blocks with the same condition if the block has multiple
...
predecessors. This implements branch-phi-thread.ll::test1
llvm-svn: 23395
2005-09-20 00:43:16 +00:00
049cb4482f
Reject a case we don't handle yet
...
llvm-svn: 23393
2005-09-19 23:57:04 +00:00
a160924d57
remove debugging code :-/
...
llvm-svn: 23392
2005-09-19 23:50:15 +00:00
748f903046
Implement SimplifyCFG/branch-phi-thread.ll, the most trivial case of threading
...
control across branches with determined outcomes. More generality to follow.
This triggers a couple thousand times in specint.
llvm-svn: 23391
2005-09-19 23:49:37 +00:00
89c1dfc733
Teach SplitCriticalEdge to update LoopInfo if it is alive. This fixes
...
a problem in LoopStrengthReduction, where it would split critical edges
then confused itself with outdated loop information.
llvm-svn: 22776
2005-08-13 01:38:43 +00:00
b7ebe65c56
Change break critical edges to not remove, then insert, PHI node entries.
...
Instead, just update the BB in-place. This is both faster, and it prevents
split-critical-edges from shuffling the PHI argument list unneccesarily.
llvm-svn: 22765
2005-08-12 21:58:07 +00:00
257efb2ad3
This code can handle non-dominating instructions
...
llvm-svn: 22667
2005-08-05 00:57:45 +00:00
b392321cae
Fix a fixme in CondPropagate.cpp by moving a PhiNode optimization into
...
BasicBlock's removePredecessor routine. This requires shuffling around
the definition and implementation of hasContantValue from Utils.h,cpp into
Instructions.h,cpp
llvm-svn: 22664
2005-08-04 23:24:19 +00:00
d683bdd0f8
Fix Transforms/SimplifyCFG/2005-08-03-PHIFactorCrash.ll, a problem that
...
occurred while bugpointing another testcase
llvm-svn: 22621
2005-08-03 17:59:45 +00:00
2dbf1960ff
Finally, add the required constraint checks to fix Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll
...
the right way
llvm-svn: 22615
2005-08-03 00:59:12 +00:00
908036942c
Simplify some code, add the correct pred checks
...
llvm-svn: 22613
2005-08-03 00:38:27 +00:00
982b75c061
Refactor code out of PropagatePredecessorsForPHIs, turning it into a pure function with no side-effects
...
llvm-svn: 22612
2005-08-03 00:29:26 +00:00
1f047fd513
use splice instead of remove/insert to avoid some symtab operations
...
llvm-svn: 22611
2005-08-03 00:23:42 +00:00
76dc204488
move two functions up in the file, use SafeToMergeTerminators to eliminate
...
some duplicated code
llvm-svn: 22610
2005-08-03 00:19:45 +00:00
733d6704ce
Rip some code out of the main SimplifyCFG function into a subfunction and
...
call it from the only place it is live. No functionality changes.
llvm-svn: 22609
2005-08-03 00:11:16 +00:00
ac594de8dc
Disable this patch:
...
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050801/027345.html
This breaks real programs and only fixes an obscure regression testcase. A
real fix is in development.
llvm-svn: 22606
2005-08-02 23:31:38 +00:00
eee90f7eb4
Change a place to use an arbitrary value instead of null, when possible
...
llvm-svn: 22605
2005-08-02 23:29:23 +00:00
4fd3e16cbd
This code was very close, but not quite right. It did not take into
...
consideration the case where a reference in an unreachable block could
occur. This fixes Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll,
something I ran into while bugpoint'ing another pass.
llvm-svn: 22584
2005-08-02 03:24:05 +00:00
5f4ef3c5a8
Eliminate all remaining tabs and trailing spaces.
...
llvm-svn: 22523
2005-07-27 06:12:32 +00:00
937c71f2b3
Fix PR590 and Transforms/Mem2Reg/2005-06-30-ReadBeforeWrite.ll.
...
The optimization for locally used allocas was not safe for allocas that
were read before they were written. This change disables that optimization
in that case.
llvm-svn: 22318
2005-06-30 07:29:44 +00:00
d4b103107e
prevent DCE of vaarg intrinsics. This should take care of most regressions
...
llvm-svn: 22263
2005-06-19 14:41:20 +00:00
5e735294bf
Don't crash on: X = phi (X, X).
...
This fixes PR584 and Transforms/SimplifyCFG/2005-06-16-PHICrash.ll
llvm-svn: 22232
2005-06-17 01:45:53 +00:00
19f9f32a5c
Fix Transforms/SimplifyCFG/switch-simplify-crash.ll
...
llvm-svn: 22158
2005-05-20 22:19:54 +00:00
bcefcf8552
Make sure to preserve the calling convention when changing an invoke into
...
a call. This fixes Prolangs-C++/deriv2, kimwitu++, and Misc-C++/bigfib
on X86 with -enable-x86-fastcc.
llvm-svn: 22023
2005-05-14 12:21:56 +00:00
21d1dde72a
wrap long lines, preserve calling conventions when cloning functions and
...
turning calls into invokes
llvm-svn: 21797
2005-05-09 01:04:34 +00:00
7effa0ed06
BAD typeo which caused many testsuite failures last night. Note to self, do
...
not change code after testing it without retesting!
llvm-svn: 21741
2005-05-06 17:13:16 +00:00
9f3dced2c7
Implement Transforms/Inline/inline-tail.ll
...
llvm-svn: 21736
2005-05-06 06:47:52 +00:00
a36d525741
DCE intrinsic instructions without side effects.
...
llvm-svn: 21719
2005-05-06 05:27:34 +00:00
c968ea0495
Remove optimizations that don't require both operands to be constant. These
...
are moved to simplify-libcalls pass.
llvm-svn: 21614
2005-04-29 05:55:35 +00:00
ed55a6b5e0
* Add constant folding for additional floating point library calls such as
...
sinh, cosh, etc.
* Make the name comparisons for the fp libcalls a little more efficient by
switching on the first character of the name before doing comparisons.
llvm-svn: 21611
2005-04-28 23:01:59 +00:00
82639853c0
Eliminate tabs and trailing spaces
...
llvm-svn: 21480
2005-04-23 21:38:35 +00:00
b1c9317bb4
Remove trailing whitespace
...
llvm-svn: 21427
2005-04-21 23:48:37 +00:00
7ceb081f3f
Improve doxygen documentation, patch contributed by Evan Jones!
...
llvm-svn: 21393
2005-04-21 16:04:49 +00:00
b38b443b15
Teach simplifycfg that setcc is cheap and non-trapping, so that it can
...
convert this:
%tmp.1 = seteq int %i, 0 ; <bool> [#uses=1]
br bool %tmp.1, label %shortcirc_done, label %shortcirc_next
shortcirc_next: ; preds = %entry
%tmp.4 = seteq int %j, 0 ; <bool> [#uses=1]
br label %shortcirc_done
shortcirc_done: ; preds = %shortcirc_next, %entry
%shortcirc_val = phi bool [ %tmp.4, %shortcirc_next ], [ true, %entry ] ; <bool> [#uses=1]
to this:
%tmp.1 = seteq int %i, 0 ; <bool> [#uses=1]
%tmp.4 = seteq int %j, 0 ; <bool> [#uses=1]
%shortcirc_val = select bool %tmp.1, bool true, bool %tmp.4 ; <bool> [#uses=1]
... which is later simplified by instcombine into an or.
llvm-svn: 21388
2005-04-21 05:31:13 +00:00
95f16a3ac4
Get rid of this for_each loop
...
llvm-svn: 21253
2005-04-12 18:51:33 +00:00
7b9020a059
Fix the missing symbols problem Bill was hitting. Patch contributed by
...
Bill Wendling!!
llvm-svn: 20649
2005-03-17 15:38:16 +00:00
531f9e92d4
This mega patch converts us from using Function::a{iterator|begin|end} to
...
using Function::arg_{iterator|begin|end}. Likewise Module::g* -> Module::global_*.
This patch is contributed by Gabor Greif, thanks!
llvm-svn: 20597
2005-03-15 04:54:21 +00:00
6d0a24c608
second argument to Value::setName is now gone.
...
llvm-svn: 20463
2005-03-05 19:05:20 +00:00
0ce80cd542
Fix spelling, patch contributed by Gabor Greif!
...
llvm-svn: 20343
2005-02-27 06:18:25 +00:00
cc6d75fddf
remove extraneous cast
...
llvm-svn: 20334
2005-02-26 18:33:28 +00:00
1cca959e5d
Implement Transforms/SimplifyCFG/switch_thread.ll
...
This does a simple form of "jump threading", which eliminates CFG edges that
are provably dead. This triggers 90 times in the external tests, and
eliminating CFG edges is always always a good thing! :)
llvm-svn: 20300
2005-02-24 06:17:52 +00:00
a35dfcedd3
switchinst ctor now takes a hint for the number of cases that it will have.
...
llvm-svn: 19898
2005-01-29 00:38:26 +00:00
3215bb6049
Implement SimplifyCFG/DeadSetCC.ll
...
SimplifyCFG is one of those passes that we use for final cleanup: it should
not rely on other passes to clean up its garbage. This fixes the "why are
trivially dead setcc's in the output of gccas" problem.
llvm-svn: 19212
2005-01-01 16:02:12 +00:00
ffefea0772
The split bb is really the exit of the old function
...
llvm-svn: 18799
2004-12-11 16:59:54 +00:00
4fc998da2e
Fix Regression/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll,
...
and the failure on make_dparser last night.
llvm-svn: 18766
2004-12-10 17:42:31 +00:00
019445715e
Squelch warning
...
llvm-svn: 18381
2004-11-30 07:47:34 +00:00
868ae13dc0
Fix test/Regression/Transforms/LICM/2004-09-14-AliasAnalysisInvalidate.llx
...
This only fails on darwin or on X86 under valgrind.
llvm-svn: 18377
2004-11-30 07:01:15 +00:00
fd8cbc257e
Alkis noticed that this variable is dead. Thanks!
...
llvm-svn: 18369
2004-11-30 04:01:44 +00:00
389cfac0d1
If we have something like this:
...
if (x) {
code
...
} else {
code
...
}
Turn it into:
code
if (x) {
...
} else {
...
}
This reduces code size and in some common cases allows us to completely
eliminate the conditional. This turns several if/then/else blocks in loops
into straightline code in 179.art, turning the loops into single basic blocks
(good for modsched even!).
Maybe now brg will leave me alone ;-)
llvm-svn: 18366
2004-11-30 00:29:14 +00:00
72a57c3259
Allow constructor parameter to override aggregating args; fix spacing
...
llvm-svn: 18028
2004-11-20 02:20:27 +00:00
9b0291b18d
Fix: CodeExtractor/2004-11-12-InvokeExtract.ll
...
llvm-svn: 17699
2004-11-13 00:06:45 +00:00
5bcca6058a
Fix a bug where the code extractor would get a bit confused handling invoke
...
instructions, setting DefBlock to a block it did not have dom info for.
llvm-svn: 17697
2004-11-12 23:50:44 +00:00
93d1e39f3e
Do not compute the predecessor list for a block unless we need it.
...
This speeds up simplifycfg on this program, from 44.87s to 0.29s (with
a profiled build):
#define CL0(a) case a: goto c;
#define CL1(a) CL0(a##0) CL0(a##1) CL0(a##2) CL0(a##3) CL0(a##4) CL0(a##5) \
CL0(a##6) CL0(a##7) CL0(a##8) CL0(a##9)
#define CL2(a) CL1(a##0) CL1(a##1) CL1(a##2) CL1(a##3) CL1(a##4) CL1(a##5) \
CL1(a##6) CL1(a##7) CL1(a##8) CL1(a##9)
#define CL3(a) CL2(a##0) CL2(a##1) CL2(a##2) CL2(a##3) CL2(a##4) CL2(a##5) \
CL2(a##6) CL2(a##7) CL2(a##8) CL2(a##9)
#define CL4(a) CL3(a##0) CL3(a##1) CL3(a##2) CL3(a##3) CL3(a##4) CL3(a##5) \
CL3(a##6) CL3(a##7) CL3(a##8) CL3(a##9)
void f();
void a() {
int b;
c: switch (b) {
CL4(1)
}
}
This testcase is contrived to expose N^2 behavior, but this patch should speedup
simplifycfg on any programs that use large switch statements. This testcase
comes from GCC PR17895.
llvm-svn: 17389
2004-11-01 06:53:58 +00:00
57cbe39d1e
Change Library Names Not To Conflict With Others When Installed
...
llvm-svn: 17286
2004-10-27 23:18:45 +00:00
fad217c847
Eliminate compilation warning on uninitialized variable.
...
llvm-svn: 17163
2004-10-22 16:10:39 +00:00
c1c320c335
We won't use automake
...
llvm-svn: 17155
2004-10-22 03:35:04 +00:00
6a11a75f31
Initial automake generated Makefile template
...
llvm-svn: 17136
2004-10-18 23:55:41 +00:00
ce0783318b
Correction to allow compilation with Visual C++.
...
Patch contributed by Morten Ofstad. Thanks Morten!
llvm-svn: 17123
2004-10-18 14:38:48 +00:00
5edb2f32d0
Simplify code by deleting instructions that preceed unreachable instructions.
...
Simplify code by simplifying terminators that branch to blocks that start
with an unreachable instruction.
llvm-svn: 17116
2004-10-18 04:07:22 +00:00
34ae670706
Fix a bug that occurs when the constant value is the result of an invoke. In
...
particular, invoke ret values are only live in the normal dest of the invoke
not in the unwind dest.
llvm-svn: 17108
2004-10-18 01:21:17 +00:00
6e79e55aea
Fix Regression/Transforms/Inline/2004-10-17-InlineFunctionWithoutReturn.ll
...
If a function had no return instruction in it, and the result of the inlined
call instruction was used, we would crash.
llvm-svn: 17104
2004-10-17 23:21:07 +00:00
215c7ebaa6
When inserting PHI nodes, don't insert any phi nodes that are obviously
...
unneccesary. This allows us to delete several hundred phi nodes of the
form PHI(x,x,x,undef) from 253.perlbmk and probably other programs as well.
This implements Mem2Reg/UndefValuesMerge.ll
llvm-svn: 17098
2004-10-17 21:25:56 +00:00
96db59e48a
Enhance hasConstantValue to ignore undef values in phi nodes. This allows it
...
to think that PHI[4, undef] == 4.
llvm-svn: 17096
2004-10-17 21:23:26 +00:00
98e541457b
Add support for unreachable
...
llvm-svn: 17056
2004-10-16 18:21:33 +00:00
7e6d4a12b5
Add support for UndefValue
...
llvm-svn: 17046
2004-10-16 18:10:31 +00:00
c0e2e82477
When promoting mem2reg, make uninitialized values become undef isntead of 0.
...
llvm-svn: 17045
2004-10-16 18:10:06 +00:00
45c35b1d1f
When converting phi nodes into select instructions, we shouldn't promote PHI
...
nodes unless we KNOW that we are able to promote all of them.
This fixes: test/Regression/Transforms/SimplifyCFG/PhiNoEliminate.ll
llvm-svn: 16973
2004-10-14 05:13:36 +00:00
ace94df71f
Update to reflect changes in Makefile rules.
...
llvm-svn: 16950
2004-10-13 11:46:52 +00:00
97327f05fc
Initial version of automake Makefile.am file.
...
llvm-svn: 16893
2004-10-10 22:20:40 +00:00
879ce7894c
Do not insert trivially dead select instructions, which allows us to
...
potentially fold more in one pass.
llvm-svn: 16583
2004-09-29 05:43:32 +00:00
855a4ff4dd
Remove a whole bunch of horrible hacky code that was used to promote allocas
...
whose addresses where used by trivial phi nodes and select instructions. This
is now performed by the instcombine pass, which is more powerful, is much
simpler, and is faster. This allows the deletion of a bunch of code, two
FIXME's and two gotos.
llvm-svn: 16406
2004-09-19 18:51:51 +00:00
475dc2c93d
Make sure to remove the Select instruction as well
...
llvm-svn: 16389
2004-09-18 00:32:40 +00:00
6614946443
Convert code to compile with vc7.1.
...
Patch contributed by Paolo Invernizzi. Thanks Paolo!
llvm-svn: 16368
2004-09-15 17:06:42 +00:00
9b9932bd94
If given an AliasSetTracker object to update, update it.
...
llvm-svn: 16347
2004-09-15 01:02:54 +00:00
a5c04ee50f
Fixes to make LLVM compile with vc7.1.
...
Patch contributed by Paolo Invernizzi!
llvm-svn: 16152
2004-09-03 18:19:51 +00:00
7c16caa336
Changes For Bug 352
...
Move include/Config and include/Support into include/llvm/Config,
include/llvm/ADT and include/llvm/Support. From here on out, all LLVM
public header files must be under include/llvm/.
llvm-svn: 16137
2004-09-01 22:55:40 +00:00
56273827b1
If we are extracting a block that has multiple successors that are the same
...
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).
llvm-svn: 15717
2004-08-13 03:27:07 +00:00
f06b043204
When we code extract some stuff, leave the codeRepl block in the place where
...
the extracted code was, instead of putting it at the end of the function
llvm-svn: 15716
2004-08-13 03:17:39 +00:00
889d346e6e
Add value mapper support for select constant exprs. This should fix a bug
...
Nate ran into when bugpointing siod. This fix should go into LLVM 1.3
llvm-svn: 15712
2004-08-13 02:43:19 +00:00
7f1c7ede5b
Fix code extraction of unwind blocks. This fixed bugs that bugpoint can
...
run into. This should go into 1.3
llvm-svn: 15679
2004-08-12 03:17:02 +00:00
832437255d
Stop using getValues().
...
llvm-svn: 15487
2004-08-04 08:44:43 +00:00
7471b96a05
Expose this as a functionpass
...
llvm-svn: 15369
2004-07-31 10:01:58 +00:00
f4a410f907
Fix #includes of i*.h => Instructions.h as per PR403.
...
llvm-svn: 15337
2004-07-29 17:30:57 +00:00
63b38bd2ed
Fix #includes of i*.h => Instructions.h as per PR403.
...
llvm-svn: 15334
2004-07-29 17:30:56 +00:00
fd7a2d4477
Merge i*.h headers into Instructions.h as part of bug403.
...
llvm-svn: 15325
2004-07-29 12:17:34 +00:00
902dcf0729
These files don't need to include <iostream> since they include "Support/Debug.h".
...
llvm-svn: 15089
2004-07-21 20:50:33 +00:00
45b50d14c9
Fix a serious code pessimization problem. If an inlined function has a single
...
return, clone the 'ret' BB code into the block AFTER the inlined call, not the
other way around.
llvm-svn: 15030
2004-07-20 05:45:24 +00:00
5823ac1c21
Implement SimplifyCFG/BrUnwind.ll
...
llvm-svn: 15022
2004-07-20 01:17:38 +00:00
3b4e83ec83
Remove an if statement that would never be reached.
...
llvm-svn: 14968
2004-07-18 08:41:47 +00:00
cb3fb5d4f5
bug 122:
...
- Replace ConstantPointerRef usage with GlobalValue usage
llvm-svn: 14953
2004-07-18 00:44:37 +00:00
ef784f01dd
bug 122:
...
- Minimize redundant isa<GlobalValue> usage
llvm-svn: 14948
2004-07-18 00:32:14 +00:00
32c518e526
Progress on PR341
...
llvm-svn: 14840
2004-07-15 02:06:12 +00:00
eb04d9bcb4
Add #include <iostream> since Value.h does not #include it any more.
...
llvm-svn: 14622
2004-07-04 12:19:56 +00:00
49bb82a4b8
Moved to lib/VMCore
...
llvm-svn: 14348
2004-06-23 17:21:17 +00:00
1ea8447089
Use new IsNAN() wrapper.
...
llvm-svn: 14340
2004-06-23 00:25:35 +00:00
f12c4a3d37
*FINALLY* Fix a really nasty nondeterministic bug that has been haunting us
...
since May 1st. In this code, the pred iterator was being invalidated sometimes
causing the wrong entries to be added to PHI nodes.
The fix for this is to defererence and safe the *PI value before we hack on
branch instructions, which changes use/def chains, which SOMETIMES invalidates
the iterator.
llvm-svn: 14278
2004-06-21 07:19:01 +00:00
46f60890a3
Comment out the isnan stuff until we get a proper autoconf test for it
...
breaking the build on sparc is not acceptable.
llvm-svn: 14277
2004-06-21 06:17:21 +00:00
9734fd0980
Add some DEBUG output to the simplifycfg routines
...
Fix another non-deterministic behavior, this one should actually speed up the
code though as it was doing silly things.
llvm-svn: 14258
2004-06-20 01:13:18 +00:00
4db0f8260a
Change to use the StableBasicBlockNumbering class
...
llvm-svn: 14247
2004-06-19 08:42:40 +00:00
a52ab6f57f
Do not let the numbering of PHI nodes placed in the function depend on
...
non-deterministic things like the ordering of blocks in the dominance
frontier of a BB. Unfortunately, I don't know of a better way to solve
this problem than to explicitly sort the BB's in function-order before
processing them. This is guaranteed to slow the pass down a bit, but
is absolutely necessary to get usable diffs between two different tools
executing the mem2reg or scalarrepl pass.
Before this, bazillions of spurious diff failures occurred all over the
place due to the different order of processing PHIs:
- %tmp.111 = getelementptr %struct.Connector_struct* %upcon.0.0, uint 0, uint 0
+ %tmp.111 = getelementptr %struct.Connector_struct* %upcon.0.1, uint 0, uint 0
Now, the diffs match.
llvm-svn: 14244
2004-06-19 07:40:14 +00:00
b2b151d297
Do not sort by the address of LLVM ConstantInt* objects. This produces
...
nondeterministic results that depend on where these objects land in memory.
Instead, sort by the value of the constant, which is stable.
Before this patch, the -simplifycfg pass run from two different compilers
could cause different code to be generated, though it was semantically the
same:
@@ -12258,8 +12258,8 @@
%s_addr.1 = phi sbyte* [ %s, %entry ], [ %inc.0, %no_exit ] ; <sbyte*> [#uses=5]
%tmp.1 = load sbyte* %s_addr.1 ; <sbyte> [#uses=1]
switch sbyte %tmp.1, label %no_exit [
- sbyte 0, label %loopexit
sbyte 46, label %loopexit
+ sbyte 0, label %loopexit
]
We need to stomp all of this stuff out.
llvm-svn: 14243
2004-06-19 07:02:14 +00:00
27b13253d9
I love the smell of a freshly broken PowerPC build in the morning.
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llvm-svn: 14206
2004-06-17 22:27:04 +00:00
f03f320b79
Fix compilation problem on freebsd. Problem noted by Vladimir Merzliakov in
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PR371
llvm-svn: 14203
2004-06-17 21:20:52 +00:00
6b7275996c
Rename Type::PrimitiveID to TypeId and ::getPrimitiveID() to ::getTypeID()
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llvm-svn: 14201
2004-06-17 18:19:28 +00:00
20e09e5c7b
Um, did someone make a typo or something?
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llvm-svn: 14192
2004-06-15 23:09:50 +00:00
5a542aadc8
Remove support for the isnan intrinsic
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llvm-svn: 14186
2004-06-15 21:37:54 +00:00
21370771ba
Quick hack to get this file compiling again on Mac OS X. The right thing to do
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is write an autoconf macro that checks whether __isnan or isnan actually works
**using the C++ compiler after #include <cmath>**, instead of doing it the easy
way with AC_CHECK_FUNCS().
llvm-svn: 14171
2004-06-14 06:33:19 +00:00
e395468ae5
Add constant folding capabilities to the isunordered intrinsic.
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llvm-svn: 14168
2004-06-13 01:23:56 +00:00
ec941f7abb
Constant fold the isnan intrinsic
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llvm-svn: 14150
2004-06-11 06:16:23 +00:00
c6e21fbd5c
Implement constant folding of fmod, which is used a lot in povray
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llvm-svn: 13823
2004-05-27 07:25:00 +00:00
06158d140c
Restructure call constant folding code a bit to make it simpler
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Add support for acos/asin/atan. 188.ammp contains three calls to acos with
constant arguments. Constant folding it allows elimination of those 3 calls
and three FP divisions of the results.
llvm-svn: 13821
2004-05-27 06:26:28 +00:00
0eefdcd73f
Do not pass a null pointer if this instruction is not prepended or
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appended anywhere.
llvm-svn: 13798
2004-05-26 22:50:28 +00:00
9e84b503f0
Use one destination constructor for the unconditional branch.
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llvm-svn: 13792
2004-05-26 21:38:14 +00:00
e7e9671cad
Convert to SymbolTable's new iteration interface.
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llvm-svn: 13754
2004-05-25 08:53:40 +00:00
abb6f008ca
Convert to SymbolTable's new lookup and iteration interfaces.
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llvm-svn: 13751
2004-05-25 08:52:20 +00:00
72185765bc
Add CloneTraceInto(), which is based on (and has mostly the same
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effects as) CloneFunctionInto().
llvm-svn: 13601
2004-05-19 09:08:14 +00:00
6182acf92a
Move RemapInstruction() to ValueMapper, so that it can be shared with
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CloneTrace, and because it is primarily an operation on ValueMaps. It
is now a global (non-static) function which can be pulled in using
ValueMapper.h.
llvm-svn: 13600
2004-05-19 09:08:12 +00:00
66219abac7
Do not pass in the same argument to the extracted function more than once, and
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give the extracted function a more useful name than just foo_code.
llvm-svn: 13493
2004-05-12 16:26:18 +00:00
13d2ddfe9c
Implement support for code extracting basic blocks that have a return
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instruction in them.
llvm-svn: 13490
2004-05-12 16:07:41 +00:00
795c9933e2
Implement splitting of PHI nodes, allowing block extraction of BB's that have
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PHI node entries from multiple outside-the-region blocks. This also fixes
extraction of the entry block in a function. Yaay.
This has successfully block extracted all (but one) block from the score_move
function in obsequi (out of 33). Hrm, I wonder which block the bug is in. :)
llvm-svn: 13489
2004-05-12 15:29:13 +00:00
3b2917bfcf
* Pull some code out into the definedInRegion/definedInCaller methods
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* Add a stub for the severSplitPHINodes which will allow us to bbextract
bb's with PHI nodes in them soon.
* Remove unused arguments from findInputsOutputs
* Dramatically simplify the code in findInputsOutputs. In particular,
nothing really cares whether or not a PHI node is using something.
* Move moveCodeToFunction to after emitCallAndSwitchStatement as that's the
order they get called.
* Fix a bug where we would code extract a region that included a call to
vastart. Like 'alloca', calls to vastart must stay in the function that
they are defined in.
* Add some comments.
llvm-svn: 13482
2004-05-12 06:01:40 +00:00
ffc4926263
Generate substantially better code when there are a limited number of exits
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from the extracted region. If the return has 0 or 1 exit blocks, the new
function returns void. If it has 2 exits, it returns bool, otherwise it
returns a ushort as before.
This allows us to use a conditional branch instruction when there are two
exit blocks, as often happens during block extraction.
llvm-svn: 13481
2004-05-12 04:14:24 +00:00
3d1ca67fdd
Two minor improvements:
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1. Get rid of the silly abort block. When doing bb extraction, we get one
abort block for every block extracted, which is kinda annoying.
2. If the switch ends up having a single destination, turn it into an
unconditional branch.
I would like to add support for conditional branches, but to do this we will
want to have the function return a bool instead of a ushort.
llvm-svn: 13478
2004-05-12 03:22:33 +00:00
be6f06818c
Do not clone arbitrary condition instructions.
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llvm-svn: 13316
2004-05-02 05:19:36 +00:00
51a6dbcb65
Do not infinitely "unroll" single BB loops.
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llvm-svn: 13315
2004-05-02 05:02:03 +00:00
1e94ed606e
Dont' merge terminators that are needed to select PHI node values.
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llvm-svn: 13312
2004-05-02 01:00:44 +00:00
2e93c4275e
Implement SimplifyCFG/branch-cond-merge.ll
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Turning "if (A < B && B < C)" into "if (A < B & B < C)"
llvm-svn: 13311
2004-05-01 23:35:43 +00:00
4cbd160b45
Fix my missing parens
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llvm-svn: 13307
2004-05-01 22:41:51 +00:00
88da6f7b52
Implement SimplifyCFG/branch-cond-prop.ll
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llvm-svn: 13306
2004-05-01 22:36:37 +00:00
3596f0a180
* Allow aggregating extracted function arguments (controlled by flag)
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* Commandline option (for now) controls that flag that is passed in
llvm-svn: 13141
2004-04-23 23:54:17 +00:00
f68f40ea42
Include cerrno (gcc-3.4 fix)
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llvm-svn: 13091
2004-04-21 16:11:40 +00:00
a43312d30b
Add support for evaluation of exp/log/log10/pow
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llvm-svn: 13011
2004-04-16 22:35:33 +00:00
174633b078
Include <cmath> for compatibility with gcc 3.0.x (the system compiler on
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Debian.)
llvm-svn: 12986
2004-04-16 15:57:32 +00:00
0328d75c83
Fix Inline/2004-04-15-InlineDeletesCall.ll
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Basically we were using SimplifyCFG as a huge sledgehammer for a simple
optimization. Because simplifycfg does so many things, we can't use it
for this purpose.
llvm-svn: 12977
2004-04-16 05:17:59 +00:00
ca52d0468e
Add a simple call constant propagation interface.
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llvm-svn: 12919
2004-04-13 19:28:52 +00:00
0aa565647c
Fold code like:
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if (C)
V1 |= V2;
into:
Vx = V1 | V2;
V1 = select C, V1, Vx
when the expression can be evaluated unconditionally and is *cheap* to
execute. This limited form of if conversion is quite handy in lots of cases.
For example, it turns this testcase into straight-line code:
int in0 ; int in1 ; int in2 ; int in3 ;
int in4 ; int in5 ; int in6 ; int in7 ;
int in8 ; int in9 ; int in10; int in11;
int in12; int in13; int in14; int in15;
long output;
void mux(void) {
output =
(in0 ? 0x00000001 : 0) | (in1 ? 0x00000002 : 0) |
(in2 ? 0x00000004 : 0) | (in3 ? 0x00000008 : 0) |
(in4 ? 0x00000010 : 0) | (in5 ? 0x00000020 : 0) |
(in6 ? 0x00000040 : 0) | (in7 ? 0x00000080 : 0) |
(in8 ? 0x00000100 : 0) | (in9 ? 0x00000200 : 0) |
(in10 ? 0x00000400 : 0) | (in11 ? 0x00000800 : 0) |
(in12 ? 0x00001000 : 0) | (in13 ? 0x00002000 : 0) |
(in14 ? 0x00004000 : 0) | (in15 ? 0x00008000 : 0) ;
}
llvm-svn: 12798
2004-04-09 22:50:22 +00:00
3b3861d305
Implement ScalarRepl/select_promote.ll
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llvm-svn: 12779
2004-04-08 19:59:34 +00:00
eed034bcd3
Fix the obvious bug in my previous checkin
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llvm-svn: 12618
2004-04-02 18:15:10 +00:00
9f0db32625
Implement Transforms/SimplifyCFG/return-merge.ll
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This actually causes us to turn code like:
return C ? A : B;
into a select instruction.
llvm-svn: 12617
2004-04-02 18:13:43 +00:00
c24019c825
Fix PR310 and TailDup/2004-04-01-DemoteRegToStack.llx
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llvm-svn: 12597
2004-04-01 20:28:45 +00:00
709f03e2dd
Fix linking of constant expr casts due to type resolution changes. With
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this and the other patches 253.perlbmk links again.
llvm-svn: 12565
2004-03-31 02:58:28 +00:00
81bdcb90ce
Now that all the code generators support the select instruction, and the instcombine
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pass can eliminate many nasty cases of them, start generating them in the optimizers
llvm-svn: 12545
2004-03-30 19:44:05 +00:00
232155dc1b
Fix bug: CodeExtractor/2004-03-17-MissedLiveIns.ll
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With this fix we now successfully extract all 149 loops from 256.bzip2 without
crashing or miscompiling the program!
llvm-svn: 12493
2004-03-18 05:56:32 +00:00
acd75986ee
Fix CodeExtractor/2004-03-17-UpdatePHIsOutsideRegion.ll
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llvm-svn: 12489
2004-03-18 05:38:31 +00:00
Chris Lattner