Chris Lattner
f9527850e6
Implement Transforms/InstCombine/cast-load-gep.ll, which allows us to devirtualize
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11 indirect calls in perlbmk.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19947 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-31 04:50:46 +00:00
Chris Lattner
5551706b0f
Adjust to changes in instruction interfaces.
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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
667fdaef9f
Switchinst takes a hint for the number of cases it will have.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19899 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29 00:38:45 +00:00
Chris Lattner
378805969e
switchinst ctor now takes a hint for the number of cases that it will have.
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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
5598aa0328
Adjust Valuehandle to hold its operand directly in it.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19897 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-29 00:37:36 +00:00
Chris Lattner
ad5fec12a0
* add some DEBUG statements
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* Properly compile this:
struct a {};
int test() {
struct a b[2];
if (&b[0] != &b[1])
abort ();
return 0;
}
to 'return 0', not abort().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19875 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-28 19:32:01 +00:00
Alkis Evlogimenos
193904a663
Add a dependency to the trace library so that it gets pulled in
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automatically.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19828 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-25 16:23:57 +00:00
Chris Lattner
ad1e302723
Get rid of a several dozen more and instructions in specint.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19786 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-23 20:26:55 +00:00
Chris Lattner
45f57b8ee3
Handle comparisons of gep instructions that have different typed indices
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as long as they are the same size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19734 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-21 23:06:49 +00:00
Chris Lattner
6fb5a4a5f8
Add two optimizations. The first folds (X+Y)-X -> Y
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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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19706 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 21:50:18 +00:00
Chris Lattner
7d719c3cd8
Fix 'raise' to work with packed types. Patch by Morten Ofstad.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19693 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 16:16:35 +00:00
Chris Lattner
a3fd1c569c
Delete PHI nodes that are not dead but are locked in a cycle of single
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useness.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19629 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-17 05:10:15 +00:00
Chris Lattner
b352fa5853
Move code out of indentation one level to make it easier to read.
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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
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19628 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-17 03:20:02 +00:00
Chris Lattner
906ab50acf
Fix some bugs in an xform added yesterday. This fixes Prolangs-C/allroots.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19553 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-14 17:35:12 +00:00
Chris Lattner
6f7f02fdec
Fix a compile crash on spiff
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19552 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-14 17:17:59 +00:00
Chris Lattner
4401c9cabe
if two gep comparisons only differ by one index, compare that index directly.
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This allows us to better optimize begin() -> end() comparisons in common cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19542 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-14 00:20:05 +00:00
Chris Lattner
0b84c80c08
Do not overrun iterators. This fixes a 176.gcc crash
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19541 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 23:26:48 +00:00
Chris Lattner
87875dac89
Turn select C, (X+Y), (X-Y) --> (X+(select C, Y, (-Y))). This occurs in
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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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19537 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 22:52:24 +00:00
Chris Lattner
e9d782b7be
Implement an optimization for == and != comparisons like this:
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_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
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%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
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%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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19536 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 22:25:21 +00:00
Chris Lattner
5bdf04cc8e
Fix some bugs in code I didn't mean to check in.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19534 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 20:40:58 +00:00
Chris Lattner
574da9ba0b
Fix a crash compiling 129.compress
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19533 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 20:14:25 +00:00
Reid Spencer
99f997d2c1
Add the LOADABLE_MODULE=1 directive to indicate that this shared library is
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intended to be a dlopenable module and not a "plain" shared library.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19456 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 04:33:32 +00:00
Jeff Cohen
ecc1cef8bf
Apply feedback from Chris.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19432 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 04:23:32 +00:00
Chris Lattner
22bc934720
Fix VS warnings
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19383 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 19:48:40 +00:00
Chris Lattner
4d0801b243
Fix VS warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19382 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 19:45:31 +00:00
Chris Lattner
652f3cf76f
Fix uint64_t -> unsigned VS warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19381 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 19:42:22 +00:00
Chris Lattner
d4bc564531
Silence VS warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19380 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 19:37:20 +00:00
Chris Lattner
2cc34627bb
Silence warnings
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19379 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 19:34:41 +00:00
Jeff Cohen
bf65268def
Add more missing createXxxPass functions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19370 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 17:21:40 +00:00
Misha Brukman
60766f7d41
Convert tabs to spaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19320 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 07:05:34 +00:00
Jeff Cohen
d9ed8c8880
Add missing createXxxPass functions
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19319 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 06:57:28 +00:00
Jeff Cohen
30becbda10
Add missing include
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19315 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 05:42:13 +00:00
Jeff Cohen
f5e58f8f43
Put createLoopUnswitchPass() into proper namespace
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19306 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-06 05:47:18 +00:00
Jeff Cohen
8ca7191599
Add missing include
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19305 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-06 05:46:44 +00:00
Chris Lattner
6e7ba45460
This is a bulk commit that implements the following primary improvements:
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* 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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19220 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-01 16:22:27 +00:00
Chris Lattner
13b2f764c0
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.
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
da16d8c00b
Fix PR491 and testcase Transforms/DeadStoreElimination/2004-12-28-PartialStore.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19180 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-29 04:36:02 +00:00
Chris Lattner
68a9d3eb38
Adjust to new interfaces
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18958 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-15 07:22:25 +00:00
Chris Lattner
0ce8580fcd
Constant exprs are not efficiently negatable in practice. This disables
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turning X - (constantexpr) into X + (-constantexpr) among other things.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18935 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-14 20:08:06 +00:00
Brian Gaeke
9d97547680
Fix link error in PPC optimized build of 'opt'.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18913 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-13 21:28:39 +00:00
Chris Lattner
de97b5788c
Get rid of getSizeOf, using ConstantExpr::getSizeOf instead.
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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
6b8efcd697
Change indentation of a whole bunch of code, no real changes here.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18843 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-12 23:49:37 +00:00
Chris Lattner
387bc13575
More substantial simplifications and speedups. This makes ADCE about 20% faster
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in some cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18842 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-12 23:40:17 +00:00
Chris Lattner
46356794ab
More minor microoptimizations
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18841 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-12 22:44:30 +00:00
Chris Lattner
4e51ccdd38
Remove some more set operations
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18840 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-12 22:22:18 +00:00
Chris Lattner
188839a219
Reduce number of set operations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18839 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-12 22:16:13 +00:00
Chris Lattner
857e8cdd65
Optimize div/rem + select combinations more.
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In particular, implement div.ll:test10 and rem.ll:test4.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18838 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-12 21:48:58 +00:00
Chris Lattner
38c2556d0c
Properly implement copying of a global, fixing the 255.vortex & povray
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failures from last night.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18832 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-12 19:34:41 +00:00
Chris Lattner
fb851ab281
Simplify code and do not invalidate iterators.
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This fixes a crash compiling TimberWolfMC that was exposed due to recent
optimizer changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18831 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-12 18:23:20 +00:00
Chris Lattner
077f1a8292
Though the previous xform applies to literally dozens (hundreds?) of variables
...
in SPEC, the subsequent optimziations that we are after don't play with
with FP values, so disable this xform for them. Really we just don't want
stuff like:
double G; (always 0 or 412312.312)
= G;
turning into:
bool G_b;
= G_b ? 412312.312 : 0;
We'd rather just do the load.
-Chris
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18819 91177308-0d34-0410-b5e6-96231b3b80d8
2004-12-12 06:03:06 +00:00