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1802 Commits

Author SHA1 Message Date
Alkis Evlogimenos
3521fcb18f Fix crash on MallocInsts of unsized types. 
llvm-svn: 19988
 2005-02-02 04:43:37 +00:00
Chris Lattner
d04865822c API change. 
llvm-svn: 19959
 2005-02-01 01:23:49 +00:00
Chris Lattner
555ef32a44 Adjust to changes in APIs 
llvm-svn: 19958
 2005-02-01 01:23:31 +00:00
Chris Lattner
849a4118e6 Hacks to make this ugly ugly code work with the new use lists. 
llvm-svn: 19957
 2005-02-01 01:22:56 +00:00
Chris Lattner
c4884b553e Implement InstCombine/cast.ll:test25, a case that occurs many times 
in spec

llvm-svn: 19953
 2005-01-31 05:51:45 +00:00
Chris Lattner
6a431c25d1 Implement the trivial cases in InstCombine/store.ll 
llvm-svn: 19950
 2005-01-31 05:36:43 +00:00
Chris Lattner
a4ba8e9f0d Implement Transforms/InstCombine/cast-load-gep.ll, which allows us to devirtualize 
11 indirect calls in perlbmk.

llvm-svn: 19947
 2005-01-31 04:50:46 +00:00
Chris Lattner
c29f25e260 Adjust to changes in instruction interfaces. 
llvm-svn: 19900
 2005-01-29 00:39:08 +00:00
Chris Lattner
7dab604f10 Switchinst takes a hint for the number of cases it will have. 
llvm-svn: 19899
 2005-01-29 00:38:45 +00:00
Chris Lattner
ccc0c99fae 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
Chris Lattner
d87666619f Adjust Valuehandle to hold its operand directly in it. 
llvm-svn: 19897
 2005-01-29 00:37:36 +00:00
Chris Lattner
b035ec4a9c * add some DEBUG statements 
* Properly compile this:

struct a {};
int test() {
  struct a b[2];
  if (&b[0] != &b[1])
    abort ();
  return 0;
}

to 'return 0', not abort().

llvm-svn: 19875
 2005-01-28 19:32:01 +00:00
Alkis Evlogimenos
eb6bfe9cee Add a dependency to the trace library so that it gets pulled in 
automatically.

llvm-svn: 19828
 2005-01-25 16:23:57 +00:00
Chris Lattner
ab2ab313d3 Get rid of a several dozen more and instructions in specint. 
llvm-svn: 19786
 2005-01-23 20:26:55 +00:00
Chris Lattner
151c8e6390 Handle comparisons of gep instructions that have different typed indices 
as long as they are the same size.

llvm-svn: 19734
 2005-01-21 23:06:49 +00:00
Chris Lattner
5a9660aa71 Add two optimizations. The first folds (X+Y)-X -> Y 
The second folds operations into selects, e.g. (select C, (X+Y), (Y+Z))
-> (Y+(select C, X, Z)

This occurs a few times across spec, e.g.

         select    add/sub
mesa:    83        0
povray:  5         2
gcc      4         2
parser   0         22
perlbmk  13        30
twolf    0         3

llvm-svn: 19706
 2005-01-19 21:50:18 +00:00
Chris Lattner
302ea8908d Fix 'raise' to work with packed types. Patch by Morten Ofstad. 
llvm-svn: 19693
 2005-01-19 16:16:35 +00:00
Chris Lattner
3402945d52 Delete PHI nodes that are not dead but are locked in a cycle of single 
useness.

llvm-svn: 19629
 2005-01-17 05:10:15 +00:00
Chris Lattner
de6b1ca556 Move code out of indentation one level to make it easier to read. 
Disable the xform for < > cases.  It turns out that the following is being
miscompiled:

bool %test(sbyte %S) {
        %T = cast sbyte %S to uint
        %V = setgt uint %T, 255
        ret bool %V
}

llvm-svn: 19628
 2005-01-17 03:20:02 +00:00
Chris Lattner
708ff662ba Fix some bugs in an xform added yesterday. This fixes Prolangs-C/allroots. 
llvm-svn: 19553
 2005-01-14 17:35:12 +00:00
Chris Lattner
13fd87be57 Fix a compile crash on spiff 
llvm-svn: 19552
 2005-01-14 17:17:59 +00:00
Chris Lattner
6b519e3314 if two gep comparisons only differ by one index, compare that index directly. 
This allows us to better optimize begin() -> end() comparisons in common cases.

llvm-svn: 19542
 2005-01-14 00:20:05 +00:00
Chris Lattner
283b7d9809 Do not overrun iterators. This fixes a 176.gcc crash 
llvm-svn: 19541
 2005-01-13 23:26:48 +00:00
Chris Lattner
b3dfd0aecd Turn select C, (X+Y), (X-Y) --> (X+(select C, Y, (-Y))). This occurs in 
the 'sim' program and probably elsewhere.  In sim, it comes up for cases
like this:

#define round(x) ((x)>0.0 ? (x)+0.5 : (x)-0.5)
double G;
void T(double X) { G = round(X); }

(it uses the round macro a lot).  This changes the LLVM code from:

        %tmp.1 = setgt double %X, 0.000000e+00          ; <bool> [#uses=1]
        %tmp.4 = add double %X, 5.000000e-01            ; <double> [#uses=1]
        %tmp.6 = sub double %X, 5.000000e-01            ; <double> [#uses=1]
        %mem_tmp.0 = select bool %tmp.1, double %tmp.4, double %tmp.6
        store double %mem_tmp.0, double* %G

to:

        %tmp.1 = setgt double %X, 0.000000e+00          ; <bool> [#uses=1]
        %mem_tmp.0.p = select bool %tmp.1, double 5.000000e-01, double -5.000000e-01
        %mem_tmp.0 = add double %mem_tmp.0.p, %X
        store double %mem_tmp.0, double* %G
        ret void

llvm-svn: 19537
 2005-01-13 22:52:24 +00:00
Chris Lattner
e59c6d1cbe Implement an optimization for == and != comparisons like this: 
_Bool test2(int X, int Y) {
  return &arr[X][Y] == arr;
}

instead of generating this:

bool %test2(int %X, int %Y) {
        %tmp.3.idx = mul int %X, 160            ; <int> [#uses=1]
        %tmp.3.idx1 = shl int %Y, ubyte 2               ; <int> [#uses=1]
        %tmp.3.offs2 = sub int 0, %tmp.3.idx            ; <int> [#uses=1]
        %tmp.7 = seteq int %tmp.3.idx1, %tmp.3.offs2            ; <bool> [#uses=1]
        ret bool %tmp.7
}


generate this:

bool %test2(int %X, int %Y) {
        seteq int %X, 0         ; <bool>:0 [#uses=1]
        seteq int %Y, 0         ; <bool>:1 [#uses=1]
        %tmp.7 = and bool %0, %1                ; <bool> [#uses=1]
        ret bool %tmp.7
}

This idiom occurs in C++ programs when iterating from begin() to end(),
in a vector or array.  For example, we now compile this:

void test(int X, int Y) {
  for (int *i = arr; i != arr+100; ++i)
    foo(*i);
}

to this:

no_exit:                ; preds = %entry, %no_exit
	...
        %exitcond = seteq uint %indvar.next, 100                ; <bool> [#uses=1]
        br bool %exitcond, label %return, label %no_exit



instead of this:

no_exit:                ; preds = %entry, %no_exit
	...
        %inc5 = getelementptr [100 x [40 x int]]* %arr, int 0, int 0, int %inc.rec              ; <int*> [#uses=1]
        %tmp.8 = seteq int* %inc5, getelementptr ([100 x [40 x int]]* %arr, int 0, int 100, int 0)              ; <bool> [#uses=1]
        %indvar.next = add uint %indvar, 1              ; <uint> [#uses=1]
        br bool %tmp.8, label %return, label %no_exit

llvm-svn: 19536
 2005-01-13 22:25:21 +00:00
Chris Lattner
ee469241c3 Fix some bugs in code I didn't mean to check in. 
llvm-svn: 19534
 2005-01-13 20:40:58 +00:00
Chris Lattner
aebad4db9a Fix a crash compiling 129.compress 
llvm-svn: 19533
 2005-01-13 20:14:25 +00:00
Reid Spencer
7e9642515c Add the LOADABLE_MODULE=1 directive to indicate that this shared library is 
intended to be a dlopenable module and not a "plain" shared library.

llvm-svn: 19456
 2005-01-11 04:33:32 +00:00
Jeff Cohen
8b03a55724 Apply feedback from Chris. 
llvm-svn: 19432
 2005-01-10 04:23:32 +00:00
Chris Lattner
c2821461e9 Fix VS warnings 
llvm-svn: 19383
 2005-01-08 19:48:40 +00:00
Chris Lattner
2e24bcf264 Fix VS warnings. 
llvm-svn: 19382
 2005-01-08 19:45:31 +00:00
Chris Lattner
131ada2668 Fix uint64_t -> unsigned VS warnings. 
llvm-svn: 19381
 2005-01-08 19:42:22 +00:00
Chris Lattner
ee218d4348 Silence VS warnings. 
llvm-svn: 19380
 2005-01-08 19:37:20 +00:00
Chris Lattner
d1e987d9ae Silence warnings 
llvm-svn: 19379
 2005-01-08 19:34:41 +00:00
Jeff Cohen
ce541ade79 Add more missing createXxxPass functions. 
llvm-svn: 19370
 2005-01-08 17:21:40 +00:00
Misha Brukman
22df7f894f Convert tabs to spaces 
llvm-svn: 19320
 2005-01-07 07:05:34 +00:00
Jeff Cohen
c07c54f5b4 Add missing createXxxPass functions 
llvm-svn: 19319
 2005-01-07 06:57:28 +00:00
Jeff Cohen
79dc6715bb Add missing include 
llvm-svn: 19315
 2005-01-07 05:42:13 +00:00
Jeff Cohen
67f737e5d1 Put createLoopUnswitchPass() into proper namespace 
llvm-svn: 19306
 2005-01-06 05:47:18 +00:00
Jeff Cohen
a8574e28a3 Add missing include 
llvm-svn: 19305
 2005-01-06 05:46:44 +00:00
Chris Lattner
14d51ed06a This is a bulk commit that implements the following primary improvements: 
* We can now fold cast instructions into select instructions that
    have at least one constant operand.
  * We now optimize expressions more aggressively based on bits that are
    known to be zero.  These optimizations occur a lot in code that uses
    bitfields even in simple ways.
  * We now turn more cast-cast sequences into AND instructions.  Before we
    would only do this if it if all types were unsigned.  Now only the
    middle type needs to be unsigned (guaranteeing a zero extend).
  * We transform sign extensions into zero extensions in several cases.

This corresponds to these test/Regression/Transforms/InstCombine testcases:
  2004-11-22-Missed-and-fold.ll
  and.ll: test28-29
  cast.ll: test21-24
  and-or-and.ll
  cast-cast-to-and.ll
  zeroext-and-reduce.ll

llvm-svn: 19220
 2005-01-01 16:22:27 +00:00
Chris Lattner
5fff877f74 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
Chris Lattner
b49dd5c526 Fix PR491 and testcase Transforms/DeadStoreElimination/2004-12-28-PartialStore.ll 
llvm-svn: 19180
 2004-12-29 04:36:02 +00:00
Chris Lattner
3a260f9757 Adjust to new interfaces 
llvm-svn: 18958
 2004-12-15 07:22:25 +00:00
Chris Lattner
763e852e7a Constant exprs are not efficiently negatable in practice. This disables 
turning X - (constantexpr) into X + (-constantexpr) among other things.

llvm-svn: 18935
 2004-12-14 20:08:06 +00:00
Brian Gaeke
ca2d45f5c1 Fix link error in PPC optimized build of 'opt'. 
llvm-svn: 18913
 2004-12-13 21:28:39 +00:00
Chris Lattner
318f80ae39 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.

llvm-svn: 18908
 2004-12-13 20:00:02 +00:00
Chris Lattner
bc889ab3c7 Change indentation of a whole bunch of code, no real changes here. 
llvm-svn: 18843
 2004-12-12 23:49:37 +00:00
Chris Lattner
85776b0e99 More substantial simplifications and speedups. This makes ADCE about 20% faster 
in some cases.

llvm-svn: 18842
 2004-12-12 23:40:17 +00:00
Chris Lattner
deda69d473 More minor microoptimizations 
llvm-svn: 18841
 2004-12-12 22:44:30 +00:00