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505 Commits

Author SHA1 Message Date
Chris Lattner
6cfd1ebcd3 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22318 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-30 07:29:44 +00:00
Andrew Lenharth
94cd87f658 prevent DCE of vaarg intrinsics. This should take care of most regressions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22263 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-19 14:41:20 +00:00
Chris Lattner
0289929c62 Don't crash on: X = phi (X, X). 
This fixes PR584 and Transforms/SimplifyCFG/2005-06-16-PHICrash.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22232 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-17 01:45:53 +00:00
Chris Lattner
71fae1022e Fix a 64-bit problem, passing (int)0 through ... instead of (void*)0 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22206 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-06-09 03:32:54 +00:00
Chris Lattner
42eb7524ef Fix Transforms/SimplifyCFG/switch-simplify-crash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22158 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-20 22:19:54 +00:00
Chris Lattner
16d0db2da8 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22023 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-14 12:21:56 +00:00
Chris Lattner
efd9168eae When lowering invokes to calls, amke sure to preserve the calling conv. This 
fixes Ptrdist/anagram with x86 llcbeta


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21925 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 06:27:02 +00:00
Chris Lattner
1381dd8a6e Prefer int 0 instead of long 0 for GEP arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21924 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 06:10:12 +00:00
Chris Lattner
c154cef9a1 wrap long lines, preserve calling conventions when cloning functions and 
turning calls into invokes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21797 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-09 01:04:34 +00:00
Chris Lattner
3799ed83b4 BAD typeo which caused many testsuite failures last night. Note to self, do 
not change code after testing it without retesting!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21741 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 17:13:16 +00:00
Chris Lattner
a9e9211bbb Preserve tail marker 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21737 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 06:48:21 +00:00
Chris Lattner
1b49141821 Implement Transforms/Inline/inline-tail.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21736 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 06:47:52 +00:00
Chris Lattner
ec710c5b12 DCE intrinsic instructions without side effects. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21719 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-06 05:27:34 +00:00
John Criswell
fe3706a12b Fixed a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21653 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-02 14:47:42 +00:00
Reid Spencer
df4945bcb5 Remove optimizations that don't require both operands to be constant. These 
are moved to simplify-libcalls pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21614 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-29 05:55:35 +00:00
Reid Spencer
1d3b71846b * 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21611 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-28 23:01:59 +00:00
Jeff Cohen
9d80930e95 Eliminate tabs and trailing spaces 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21480 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-23 21:38:35 +00:00
Misha Brukman
fd93908ae8 Remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21427 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 23:48:37 +00:00
Chris Lattner
0f67dd6237 Improve doxygen documentation, patch contributed by Evan Jones! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21393 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 16:04:49 +00:00
Chris Lattner
bf5d4fb7d8 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21388 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 05:31:13 +00:00
Chris Lattner
151c80be81 Get rid of this for_each loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21253 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-12 18:51:33 +00:00
Alkis Evlogimenos
ab7ada3ed6 Rename createPromoteMemoryToRegister() to 
createPromoteMemoryToRegisterPass() to be consistent with other pass
creation functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20885 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-28 02:01:12 +00:00
Chris Lattner
cec5b8831d Enhance loopsimplify to preserve alias analysis instead of clobbering it. 
This prevents crashes on some programs when using -ds-aa -licm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20831 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-25 06:37:22 +00:00
Chris Lattner
5b3a4553c1 Fix the missing symbols problem Bill was hitting. Patch contributed by 
Bill Wendling!!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20649 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-17 15:38:16 +00:00
Chris Lattner
e4d5c441e0 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!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20597 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-15 04:54:21 +00:00
Chris Lattner
fee3411379 trivial simplification 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20494 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-06 21:35:38 +00:00
Chris Lattner
7acff25f7f second argument to Value::setName is now gone. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20463 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-05 19:05:20 +00:00
Chris Lattner
5f792c2c53 Add an optional argument to lower to a specific constant value instead of 
to a "sizeof" expression.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20414 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-03-03 01:03:43 +00:00
Chris Lattner
da895d6337 Fix spelling, patch contributed by Gabor Greif! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20343 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-27 06:18:25 +00:00
Chris Lattner
be54dcc8a9 remove extraneous cast 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20334 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-26 18:33:28 +00:00
Chris Lattner
623369ac56 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! :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20300 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-24 06:17:52 +00:00
Chris Lattner
5551706b0f Adjust to changes in instruction interfaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19900 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 00:39:08 +00:00
Chris Lattner
378805969e switchinst ctor now takes a hint for the number of cases that it will have. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19898 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 00:38:26 +00:00
Chris Lattner
13b2f764c0 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19212 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-01 16:02:12 +00:00
Chris Lattner
de97b5788c Get rid of getSizeOf, using ConstantExpr::getSizeOf instead. 
do not insert a prototype for malloc of: void* malloc(uint): on 64-bit u
targets this is not correct.  Instead of prototype it as void *malloc(...),
and pass the correct intptr_t through the "...".

Finally, fix Regression/CodeGen/SparcV9/2004-12-13-MallocCrash.ll, by not
forming constantexpr casts from pointer to uint.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18908 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-13 20:00:02 +00:00
Chris Lattner
284d1b8827 The split bb is really the exit of the old function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18799 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-11 16:59:54 +00:00
Chris Lattner
7613437db9 Fix Regression/Transforms/SimplifyCFG/2004-12-10-SimplifyCFGCrash.ll, 
and the failure on make_dparser last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18766 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-10 17:42:31 +00:00
Reid Spencer
791a959e57 For PR387:\ 
Add doInitialization method to avoid overloaded virtuals


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18602 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-12-07 08:11:36 +00:00
Chris Lattner
0f535c6fa8 Squelch warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18381 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-30 07:47:34 +00:00
Chris Lattner
5a85d9c664 Fix test/Regression/Transforms/LICM/2004-09-14-AliasAnalysisInvalidate.llx 
This only fails on darwin or on X86 under valgrind.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18377 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-30 07:01:15 +00:00
Chris Lattner
6f9e571529 Alkis noticed that this variable is dead. Thanks! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18369 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-30 04:01:44 +00:00
Chris Lattner
37dc938bbe 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 ;-)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18366 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-30 00:29:14 +00:00
Misha Brukman
e74c73cf46 Allow constructor parameter to override aggregating args; fix spacing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18028 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-20 02:20:27 +00:00
Chris Lattner
0c3b390a54 Lazily create the abort message, so only translation units that use unwind 
will actually get it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17700 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 19:07:32 +00:00
Chris Lattner
9ecc046184 Fix: CodeExtractor/2004-11-12-InvokeExtract.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17699 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 00:06:45 +00:00
Chris Lattner
68c311aac6 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17697 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-12 23:50:44 +00:00
Chris Lattner
44c94b9671 Simplify handling of constant initializers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17696 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-12 22:42:57 +00:00
Chris Lattner
bfd3e52701 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17389 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-01 06:53:58 +00:00
Reid Spencer
6cb21d443e Change Library Names Not To Conflict With Others When Installed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17286 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-27 23:18:45 +00:00
Reid Spencer
4e073a871b Eliminate compilation warning on uninitialized variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17163 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-10-22 16:10:39 +00:00