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11139 Commits

Author SHA1 Message Date
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
Brian Gaeke 84b4c9208d Hack it so we do not try to allocate values to G0. 
llvm-svn: 12184
 2004-03-06 05:31:32 +00:00
Brian Gaeke 901cfa9e2e Make prolog align stack properly. Make epilog not touch any registers. 
llvm-svn: 12183
 2004-03-06 05:31:21 +00:00
Brian Gaeke 5a1c7a8be3 Emit register names in lowercase, as required by the assembler. 
llvm-svn: 12182
 2004-03-06 05:30:21 +00:00
Brian Gaeke 639b04aca3 Teach getRegClassForType where to find FP registers 
llvm-svn: 12180
 2004-03-06 03:54:13 +00:00
Chris Lattner 2cb2905c96 Fix a minor bug 
llvm-svn: 12169
 2004-03-05 22:04:07 +00:00
Misha Brukman d2e88a21b7 Unbreak the build on Sparc. 
llvm-svn: 12161
 2004-03-05 20:04:40 +00:00
Brian Gaeke 0c76d1146f Asm output is looking a lot better; not correct for all operands yet though. 
llvm-svn: 12143
 2004-03-05 08:39:09 +00:00
Chris Lattner 6c271edcd7 Fix a bug in a previous checkin that broke 175.vpr 
llvm-svn: 12128
 2004-03-04 21:36:57 +00:00
Chris Lattner bc3381f267 Add support for strto* and v*printf 
llvm-svn: 12127
 2004-03-04 21:03:54 +00:00
Chris Lattner 0ed8162c1a Add non-crappy support for varargs 
llvm-svn: 12126
 2004-03-04 20:33:47 +00:00
Chris Lattner 3562ea84ab Implement a FIXME, improving the efficiency of DSA on povray. 
This reduces CBU time from 145s -> 122s (debug build), reduces # allocated nodes
from 129420 to 116477.

llvm-svn: 12125
 2004-03-04 19:47:04 +00:00
Brian Gaeke 9c609df3c9 Support -print-machineinstrs 
llvm-svn: 12124
 2004-03-04 19:22:16 +00:00
Chris Lattner 30f94a72f4 Speed up the cbu pass from taking somewhere near the age of the universe to about 90s on povray 
llvm-svn: 12123
 2004-03-04 19:16:35 +00:00
Brian Gaeke 8351d8c1a8 make -print-machineinstrs work for both SparcV9 and X86 
llvm-svn: 12122
 2004-03-04 19:16:23 +00:00
Alkis Evlogimenos b9501c1f8c Add assertion for scale verification. 
llvm-svn: 12120
 2004-03-04 18:05:02 +00:00
Alkis Evlogimenos 8a4159708b Fix bug introduced by yesterday's changes. 
llvm-svn: 12119
 2004-03-04 18:02:07 +00:00