3215bb6049
Implement SimplifyCFG/DeadSetCC.ll
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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
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llvm-svn: 18799
2004-12-11 16:59:54 +00:00
4fc998da2e
Fix Regression/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll,
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and the failure on make_dparser last night.
llvm-svn: 18766
2004-12-10 17:42:31 +00:00
019445715e
Squelch warning
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llvm-svn: 18381
2004-11-30 07:47:34 +00:00
868ae13dc0
Fix test/Regression/Transforms/LICM/2004-09-14-AliasAnalysisInvalidate.llx
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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!
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llvm-svn: 18369
2004-11-30 04:01:44 +00:00
389cfac0d1
If we have something like this:
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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
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llvm-svn: 18028
2004-11-20 02:20:27 +00:00
9b0291b18d
Fix: CodeExtractor/2004-11-12-InvokeExtract.ll
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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
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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.
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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
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llvm-svn: 17286
2004-10-27 23:18:45 +00:00
fad217c847
Eliminate compilation warning on uninitialized variable.
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llvm-svn: 17163
2004-10-22 16:10:39 +00:00
c1c320c335
We won't use automake
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llvm-svn: 17155
2004-10-22 03:35:04 +00:00
6a11a75f31
Initial automake generated Makefile template
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llvm-svn: 17136
2004-10-18 23:55:41 +00:00
ce0783318b
Correction to allow compilation with Visual C++.
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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.
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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
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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
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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
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llvm-svn: 17056
2004-10-16 18:21:33 +00:00
7e6d4a12b5
Add support for UndefValue
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llvm-svn: 17046
2004-10-16 18:10:31 +00:00
c0e2e82477
When promoting mem2reg, make uninitialized values become undef isntead of 0.
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llvm-svn: 17045
2004-10-16 18:10:06 +00:00
45c35b1d1f
When converting phi nodes into select instructions, we shouldn't promote PHI
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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.
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llvm-svn: 16950
2004-10-13 11:46:52 +00:00
97327f05fc
Initial version of automake Makefile.am file.
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llvm-svn: 16893
2004-10-10 22:20:40 +00:00
879ce7894c
Do not insert trivially dead select instructions, which allows us to
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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
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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
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llvm-svn: 16389
2004-09-18 00:32:40 +00:00
6614946443
Convert code to compile with vc7.1.
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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.
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llvm-svn: 16347
2004-09-15 01:02:54 +00:00
a5c04ee50f
Fixes to make LLVM compile with vc7.1.
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Patch contributed by Paolo Invernizzi!
llvm-svn: 16152
2004-09-03 18:19:51 +00:00
7c16caa336
Changes For Bug 352
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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
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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).
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
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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
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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
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run into. This should go into 1.3
llvm-svn: 15679
2004-08-12 03:17:02 +00:00
832437255d
Stop using getValues().
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llvm-svn: 15487
2004-08-04 08:44:43 +00:00
7471b96a05
Expose this as a functionpass
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llvm-svn: 15369
2004-07-31 10:01:58 +00:00
f4a410f907
Fix #includes of i*.h => Instructions.h as per PR403.
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llvm-svn: 15337
2004-07-29 17:30:57 +00:00
63b38bd2ed
Fix #includes of i*.h => Instructions.h as per PR403.
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llvm-svn: 15334
2004-07-29 17:30:56 +00:00
fd7a2d4477
Merge i*.h headers into Instructions.h as part of bug403.
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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".
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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
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llvm-svn: 15022
2004-07-20 01:17:38 +00:00
3b4e83ec83
Remove an if statement that would never be reached.
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llvm-svn: 14968
2004-07-18 08:41:47 +00:00
cb3fb5d4f5
bug 122:
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- Replace ConstantPointerRef usage with GlobalValue usage
llvm-svn: 14953
2004-07-18 00:44:37 +00:00
ef784f01dd
bug 122:
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- Minimize redundant isa<GlobalValue> usage
llvm-svn: 14948
2004-07-18 00:32:14 +00:00
32c518e526
Progress on PR341
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llvm-svn: 14840
2004-07-15 02:06:12 +00:00
Chris Lattner