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11255 Commits

Author SHA1 Message Date
Chris Lattner bd481d588a Refactor implementations 
llvm-svn: 12240
 2004-03-08 21:30:35 +00:00
Chris Lattner 755ffeb292 We don't want to make this a pure interface, as it makes all implementors 
bear the burden of implementing what will be all exactly the same methods.
They just want to provide the information in differing ways.

llvm-svn: 12239
 2004-03-08 21:30:18 +00:00
Chris Lattner b08e4653cb Rearrange some methods, implement the dominates method 
llvm-svn: 12237
 2004-03-08 21:07:12 +00:00
Chris Lattner 63b49d0574 Import the trace class from the reoptimizer 
llvm-svn: 12236
 2004-03-08 20:57:27 +00:00
Chris Lattner 9c222ed4b5 Default to using edge counts 
llvm-svn: 12234
 2004-03-08 20:04:46 +00:00
Chris Lattner c71ea6e3d4 Annotate functions with edge counts as well, if they are available. 
llvm-svn: 12233
 2004-03-08 20:04:32 +00:00
Chris Lattner 5302943ff7 If we have edge counts, we can produce block counts. I've verified that 
using an edge profile to produce block counts gives the exact same numbers
as using a block count directly.

llvm-svn: 12232
 2004-03-08 20:03:52 +00:00
Chris Lattner 96cdd27b65 Adjust to new interface 
llvm-svn: 12231
 2004-03-08 18:51:45 +00:00
Chris Lattner 03745f3e80 Add the ability to put an annotation at the end of a basic block as well. 
llvm-svn: 12230
 2004-03-08 18:51:05 +00:00
Chris Lattner 8b8a0641a1 Add initial support for reading edge counts. This will be improved to enable 
translation of edge counts into block/function counts when possible.

llvm-svn: 12229
 2004-03-08 18:20:18 +00:00
Chris Lattner 178608ee2b Add support for representing edge counts 
llvm-svn: 12228
 2004-03-08 18:19:37 +00:00
Chris Lattner 29ba1be907 Add edge profiling support to the runtime library 
llvm-svn: 12227
 2004-03-08 18:04:31 +00:00
Misha Brukman 3702b9d79b Fix link to license: point to current version in CVS. 
llvm-svn: 12226
 2004-03-08 17:59:31 +00:00
Chris Lattner 721264aecc Initial support for edge profiling 
llvm-svn: 12225
 2004-03-08 17:54:34 +00:00
Chris Lattner dae48f93b0 Split utility functions out of BlockProfiling.cpp 
llvm-svn: 12224
 2004-03-08 17:06:13 +00:00
Chris Lattner b16526108c Remove the comment "Constants must always have an initial value.", which 
is incorrect.  Fix some formatting nastiness.

llvm-svn: 12223
 2004-03-08 16:49:10 +00:00
Chris Lattner d91e676700 finegrainify namespacification 
llvm-svn: 12221
 2004-03-08 16:45:53 +00:00
Chris Lattner e2b27080e7 Insert functions into the module promptly, not lazily. This fixes a bug 
I introduced last night.  Note to self: test the *correct* tree...

llvm-svn: 12220
 2004-03-08 16:14:19 +00:00
Chris Lattner ea0789ca7b Implement test/Regression/Assembler/2004-03-07-FunctionAddressAlignment.llx 
llvm-svn: 12218
 2004-03-08 06:17:35 +00:00
Chris Lattner be3a169d18 New testcase for folding in some important situations. The first two 
come up a lot in the code generated by the C++ front-end for pointers
to member functions.  See PR166.

llvm-svn: 12217
 2004-03-08 06:17:15 +00:00
Chris Lattner c3ecaae16c Remove Module::mutateConstantPointerRef, which is now thankfully dead! 
This is one small step towards the complete obliteration of
ConstantPointerRef's entirely!! Woot!

llvm-svn: 12216
 2004-03-08 06:16:10 +00:00
Chris Lattner 8301a593a9 Remove Module::mutateConstantPointerRef, which is now thankfully dead! 
llvm-svn: 12215
 2004-03-08 06:15:33 +00:00
Chris Lattner 9f4918ab93 Eliminate nightmarish API 
llvm-svn: 12214
 2004-03-08 06:11:10 +00:00
Chris Lattner 16e27f3af3 remove *THANKFULLY* dead method 
llvm-svn: 12213
 2004-03-08 06:10:32 +00:00
Chris Lattner 75998c0885 Eliminate a REALLY HORRIBLE API: mutateReferences, which is gross gross gross. 
llvm-svn: 12212
 2004-03-08 06:09:57 +00:00
Chris Lattner 7e201ecc31 New testcase for PR269 
llvm-svn: 12211
 2004-03-08 05:35:12 +00:00
Chris Lattner f0cbbabea7 Bug fixed 
llvm-svn: 12210
 2004-03-08 04:55:45 +00:00
Chris Lattner 451e10e46a Testcase that crashes the C front-end. 
llvm-svn: 12209
 2004-03-08 04:41:32 +00:00
Chris Lattner 84c697d520 Fix a bug handling globals that are constants, but are still external 
llvm-svn: 12208
 2004-03-08 03:52:24 +00:00
Chris Lattner 98502aae76 Avoid allocating special registers a bit more robustly 
llvm-svn: 12207
 2004-03-08 03:48:07 +00:00
Chris Lattner 0653e1167d New code-quality testcase. 
llvm-svn: 12205
 2004-03-08 02:12:36 +00:00
Chris Lattner 653e662a93 Implement folding explicit load instructions into binary operations. For a 
testcase like this:

int %test(int* %P, int %A) {
        %Pv = load int* %P
        %B = add int %A, %Pv
        ret int %B
}

We now generate:
test:
        mov %ECX, DWORD PTR [%ESP + 4]
        mov %EAX, DWORD PTR [%ESP + 8]
        add %EAX, DWORD PTR [%ECX]
        ret

Instead of:
test:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %ECX, DWORD PTR [%ESP + 8]
        mov %EAX, DWORD PTR [%EAX]
        add %EAX, %ECX
        ret

... saving one instruction, and often a register.  Note that there are a lot
of other instructions that could use this, but they aren't handled.  I'm not
really interested in adding them, but mul/div and all of the FP instructions
could be supported as well if someone wanted to add them.

llvm-svn: 12204
 2004-03-08 01:58:35 +00:00
Chris Lattner 1dd6afe6a2 Rearrange and refactor some code. No functionality changes. 
llvm-svn: 12203
 2004-03-08 01:18:36 +00:00
Chris Lattner fe6f2e3e80 Implement ArgumentPromotion/aggregate-promote.ll 
This allows pointers to aggregate objects, whose elements are only read, to
be promoted and passed in by element instead of by reference.  This can
enable a LOT of subsequent optimizations in the caller function.

It's worth pointing out that this stuff happens a LOT of C++ programs, because
objects in templates are generally passed around by reference.  When these
templates are instantiated on small aggregate or scalar types, however, it is
more efficient to pass them in by value than by reference.

This transformation triggers most on C++ codes (e.g. 334 times on eon), but
does happen on C codes as well.  For example, on mesa it triggers 72 times,
and on gcc it triggers 35 times.  this is amazingly good considering that
we are using 'basicaa' so far.

llvm-svn: 12202
 2004-03-08 01:04:36 +00:00
Chris Lattner 1f7f22c42c New testcase 
llvm-svn: 12201
 2004-03-08 00:58:19 +00:00
Chris Lattner cc544e57f3 Implement: ArgumentPromotion/chained.ll 
llvm-svn: 12200
 2004-03-07 22:52:53 +00:00
Chris Lattner 332a8bdf31 New testcase for missed case 
llvm-svn: 12199
 2004-03-07 22:52:41 +00:00
Chris Lattner 64b8d697ad Fix another minor bug, exposed by perlbmk 
llvm-svn: 12198
 2004-03-07 22:43:27 +00:00
Chris Lattner 538fee7aa2 Since 'load null' is undefined, we can make it do whatever we want. Returning 
a zero value is the most likely way to cause further simplification, so we do it.

llvm-svn: 12197
 2004-03-07 22:16:24 +00:00
Chris Lattner ac2e2d3bdd Run the new pass in gccld now that it passes all tests 
llvm-svn: 12196
 2004-03-07 22:12:40 +00:00
Chris Lattner 6770842b67 Fix a minor bug and turn debug output into, well, debug output. 
llvm-svn: 12195
 2004-03-07 21:54:50 +00:00
Chris Lattner 1f607f2f2e Add prototype 
llvm-svn: 12194
 2004-03-07 21:30:08 +00:00
Chris Lattner 483ae01c9c New LLVM pass: argument promotion. This version only handles simple scalar 
variables.

llvm-svn: 12193
 2004-03-07 21:29:54 +00:00
Chris Lattner f2b8692b73 New testcase 
llvm-svn: 12192
 2004-03-07 21:28:54 +00:00
Alkis Evlogimenos d6f62ba55b Add memory operand version of conditional move. 
llvm-svn: 12190
 2004-03-07 03:19:11 +00:00
Alkis Evlogimenos cb98644e9b As I wrote in the docs, simple is the default spiller :-) 
llvm-svn: 12189
 2004-03-06 23:08:44 +00:00
Alkis Evlogimenos 79850121ad Add simple spiller. 
llvm-svn: 12188
 2004-03-06 22:38:29 +00:00
Alkis Evlogimenos 36fd868f08 The default register allocator is local not simple. 
llvm-svn: 12187
 2004-03-06 22:27:41 +00:00
Brian Gaeke 4e0669cef0 Support return values of basic integer types. 
Emit RETL instruction to return instead of funny JMPL.
Fix indentation.

llvm-svn: 12186
 2004-03-06 05:32:28 +00:00
Brian Gaeke c65b97d4f6 Sort stanzas into Sparc V8 book page number order. 
Add RET, RETL.  Rename SAVE, RESTORE & JMPL for consistency.

llvm-svn: 12185
 2004-03-06 05:32:13 +00:00