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Author SHA1 Message Date
Chris Lattner
bac32866a7 Implement instcombine/phi.ll:test6 - pulling operations through PHI nodes. 
This exposes subsequent optimization possiblities and reduces code size.
This triggers 1423 times in spec.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17740 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 19:13:23 +00:00
Chris Lattner
6e54db0852 New testcase: the phi can be eliminated if the casts are sucked into it. 
Note that this reduces code size anyway (as well as making further
optimizations simpler) so it's always a win.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17739 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 19:12:17 +00:00
Chris Lattner
e58b25490b Fix typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17738 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 17:54:58 +00:00
Chris Lattner
56ef3aebd8 add a testcase, which we already handle 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17737 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 17:54:27 +00:00
Chris Lattner
711b3402aa Transform this: 
%X = alloca ...
  %Y = alloca ...
    X == Y

into false.  This allows us to simplify some stuff in eon (and probably
many other C++ programs) where operator= was checking for self assignment.
Folding this allows us to SROA several additional structs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17735 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 07:33:16 +00:00
Chris Lattner
6739eae7ea Remove note to self 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17734 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 06:57:47 +00:00
Brian Gaeke
da9b3668c2 Fix problem with insertion point for ADJCALLSTACKDOWN. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17733 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 06:32:08 +00:00
Brian Gaeke
5179e41d6e Update lists of failing unit tests. 
Exclude bigfib, so that we effectively exclude all C++ benchmarks.
Update to-do list: mention va_start.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17732 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 06:32:07 +00:00
Chris Lattner
f2c83db935 Oops, make this test the right thing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17731 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 06:11:41 +00:00
Chris Lattner
a990d94330 If a function always returns a constant, replace all calls sites with that 
constant value.  This makes the return value dead and allows for
simplification in the caller.

This implements IPConstantProp/return-constant.ll

This triggers several dozen times throughout SPEC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17730 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 06:10:11 +00:00
Chris Lattner
0240a377d8 New testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17729 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 06:02:46 +00:00
Brian Gaeke
04fe7477b1 Fix NotTest - round up extraStack to the nearest doubleword, if it is 
not zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17728 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 05:19:00 +00:00
Chris Lattner
d878ecd904 Teach SROA how to promote an array index that is variable, if the dimension 
of the array is just two.  This occurs 8 times in gcc, 6 times in crafty, and
12 times in 099.go.

This implements ScalarRepl/sroa_two.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17727 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 05:00:19 +00:00
Chris Lattner
6c84e795ea New testcase, SROA with variable array index 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17726 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 04:58:40 +00:00
Brian Gaeke
b31a828533 Update failing Benchmarks; point out that I'm skipping Shootout-C++. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17725 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 04:43:12 +00:00
Chris Lattner
f5990edc87 Rearrange some code, no functionality changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17724 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 04:24:28 +00:00
Brian Gaeke
1c745818ff Update expected UnitTests failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17723 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 03:22:08 +00:00
Brian Gaeke
24b90c3647 Rewrite outgoing arg handling to handle more weird corner cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17722 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 03:22:07 +00:00
Brian Gaeke
54799c2a51 Support UndefValue emission. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17721 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-14 03:22:05 +00:00
Tanya Lattner
d85f0af7c2 setting path to prcontext.tcl script. Right now it searches for tclsh in your path, but this should be obtained from configure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17720 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 23:36:18 +00:00
Chris Lattner
4c989b6bd7 Remove debugging code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17719 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 23:32:53 +00:00
Chris Lattner
11a3d7b7dd Argument promotion transforms functions to unconditionally load their 
argument pointers.  This is only valid to do if the function already
unconditionally loaded an argument or if the pointer passed in is known
to be valid.  Make sure to do the required checks.

This fixed ArgumentPromotion/control-flow.ll and the Burg program.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17718 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 23:31:34 +00:00
Chris Lattner
32e7a80cdb Add a testcase we should continue to argpromote 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17717 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 23:30:22 +00:00
Chris Lattner
78d223e1fb Add a testcase for a function we cannot legally promote the argument of. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17716 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 23:28:39 +00:00
Chris Lattner
e6c745261e Add useful method, minor cleanups 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17715 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 23:28:10 +00:00
Chris Lattner
4b2c09fa22 Don't print unneeded labels 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17714 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 23:27:11 +00:00
Tanya Lattner
c7185ac36a Run prcontext.tcl with tclsh and let it be found in the path. This should be found by configure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17713 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 23:16:17 +00:00
Tanya Lattner
28b372f1d3 Adding subdirectory dg.exp files in order to be able to use dejagnu to only run specific tests (located in some subdirectory of Regression) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17712 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 23:00:45 +00:00
Tanya Lattner
de942dc12d Changed to use tcl script. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17711 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 22:55:51 +00:00
Chris Lattner
4394d51467 Hack around stupidity in GCC, fixing Burg with the CBE and 
CBackend/2004-11-13-FunctionPointerCast.llx


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17710 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 22:21:56 +00:00
Chris Lattner
8408d0be90 New testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17709 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 22:21:15 +00:00
Tanya Lattner
4913cdcc37 Rewrote prcontext.py in tcl. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17708 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 21:03:22 +00:00
Chris Lattner
ce7cafa960 shld is a very high latency operation. Instead of emitting it for shifts of 
two or three, open code the equivalent operation which is faster on athlon
and P4 (by a substantial margin).

For example, instead of compiling this:

long long X2(long long Y) { return Y << 2; }

to:

X3_2:
        movl 4(%esp), %eax
        movl 8(%esp), %edx
        shldl $2, %eax, %edx
        shll $2, %eax
        ret

Compile it to:

X2:
        movl 4(%esp), %eax
        movl 8(%esp), %ecx
        movl %eax, %edx
        shrl $30, %edx
        leal (%edx,%ecx,4), %edx
        shll $2, %eax
        ret

Likewise, for << 3, compile to:

X3:
        movl 4(%esp), %eax
        movl 8(%esp), %ecx
        movl %eax, %edx
        shrl $29, %edx
        leal (%edx,%ecx,8), %edx
        shll $3, %eax
        ret

This matches icc, except that icc open codes the shifts as adds on the P4.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17707 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 20:48:57 +00:00
Chris Lattner
62f5a9402c Add missing check 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17706 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 20:04:38 +00:00
Chris Lattner
44205cadba Compile: 
long long X3_2(long long Y) { return Y+Y; }
int X(int Y) { return Y+Y; }

into:

X3_2:
        movl 4(%esp), %eax
        movl 8(%esp), %edx
        addl %eax, %eax
        adcl %edx, %edx
        ret
X:
        movl 4(%esp), %eax
        addl %eax, %eax
        ret

instead of:

X3_2:
        movl 4(%esp), %eax
        movl 8(%esp), %edx
        shldl $1, %eax, %edx
        shll $1, %eax
        ret

X:
        movl 4(%esp), %eax
        shll $1, %eax
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17705 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 20:03:48 +00:00
Chris Lattner
50af16a97b Simplify handling of shifts to be the same as we do for adds. Add support 
for (X * C1) + (X * C2) (where * can be mul or shl), allowing us to fold:

   Y+Y+Y+Y+Y+Y+Y+Y

into
         %tmp.8 = shl long %Y, ubyte 3           ; <long> [#uses=1]

instead of

        %tmp.4 = shl long %Y, ubyte 2           ; <long> [#uses=1]
        %tmp.12 = shl long %Y, ubyte 2          ; <long> [#uses=1]
        %tmp.8 = add long %tmp.4, %tmp.12               ; <long> [#uses=1]

This implements add.ll:test25

Also add support for (X*C1)-(X*C2) -> X*(C1-C2), implementing sub.ll:test18


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17704 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 19:50:12 +00:00
Chris Lattner
706759e8c9 New testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17703 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 19:49:39 +00:00
Chris Lattner
f17ffcce18 Add support for shifts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17702 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 19:32:45 +00:00
Chris Lattner
65aedc1a4e Fold: 
(X + (X << C2)) --> X * ((1 << C2) + 1)
   ((X << C2) + X) --> X * ((1 << C2) + 1)

This means that we now canonicalize "Y+Y+Y" into:

        %tmp.2 = mul long %Y, 3         ; <long> [#uses=1]

instead of:

        %tmp.10 = shl long %Y, ubyte 1          ; <long> [#uses=1]
        %tmp.6 = add long %Y, %tmp.10               ; <long> [#uses=1]


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17701 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 19:31:40 +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
8de2da4105 New testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17698 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-13 00:06:32 +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
Reid Spencer
5c911ab6f1 Makefile for lib/Linker 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17695 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-12 20:38:45 +00:00
Reid Spencer
7f49602e5a This file originated in lib/VMCore/Linker.cpp but now lives in 
lib/Linker/LinkModules.cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17694 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-12 20:37:43 +00:00
Reid Spencer
c408c45900 This file originated in tools/gccld/Linker.cpp but now lives in 
lib/Linker/LinkArchives.cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17693 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-12 20:34:32 +00:00
Reid Spencer
12d7951d04 * Clean up all the shared library output on uninstall 
* Provide the correct set of input directories to the TAGS target
* Provide a CTAGS target for building Vi style ctags files.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17688 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-12 02:27:36 +00:00
Reid Spencer
37d813db7a Document the new llvm-ranlib command. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17687 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-12 00:18:35 +00:00
Reid Spencer
2152cca341 Correctly terminate a list. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17686 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-11-12 00:16:51 +00:00