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5749 Commits

Author SHA1 Message Date
Brian Gaeke
8af4555830 Only call verifySavedState if SaveRegAllocState is set AND debugging flag is on. 
llvm-svn: 12277
 2004-03-10 22:01:59 +00:00
Chris Lattner
405790ecae Fix PR284: [indvars] Induction variable analysis violates LLVM invariants 
llvm-svn: 12275
 2004-03-10 21:42:19 +00:00
Brian Gaeke
c60efbcee1 My fix for PR274 broke the build on Darwin/PPC. As I'm fairly certain this 
bug only affects Linux systems that use GLIBC, I'm going to put ifdefs around
the array.

llvm-svn: 12269
 2004-03-10 17:38:28 +00:00
Chris Lattner
9ce3638433 implement new method 
llvm-svn: 12264
 2004-03-09 19:37:06 +00:00
Alkis Evlogimenos
0e0433a791 Spill explicit physical register defs as well. 
llvm-svn: 12260
 2004-03-09 08:35:13 +00:00
Alkis Evlogimenos
a13672fd71 Check if printing of implicit uses is required for all types of shift 
instructions.

llvm-svn: 12258
 2004-03-09 06:10:15 +00:00
Brian Gaeke
acf93be258 Address PR274 - '[JIT] Programs cannot resolve the fstat function' 
by trying to get the compiler to generate an undefined reference for it
and related functions which live in libc_nonshared.a on Linux.

Linkers... sigh.

llvm-svn: 12256
 2004-03-09 05:22:10 +00:00
Brian Gaeke
de0239b2a6 Hmm, who left this sitting around in my tree 
llvm-svn: 12255
 2004-03-09 04:49:13 +00:00
Alkis Evlogimenos
7c0224327e Differentiate between extended precision floats (80-bit) and double precision floats (64-bit) 
llvm-svn: 12254
 2004-03-09 03:37:54 +00:00
Alkis Evlogimenos
f86d2df13d Use newly added API to emit bytes for instructions that gas misassembles 
llvm-svn: 12253
 2004-03-09 03:35:34 +00:00
Alkis Evlogimenos
085957be0b Add emitInstruction() API so that we can get the bytes of a simple instruction 
llvm-svn: 12252
 2004-03-09 03:34:53 +00:00
Alkis Evlogimenos
813daf05c3 Constify things a bit 
llvm-svn: 12251
 2004-03-09 03:30:12 +00:00
Brian Gaeke
57269b0c32 Change PhyRegAlloc::saveStateForValue()'s arg type to deal with 
AllocInfo.Instruction becoming an int.

llvm-svn: 12247
 2004-03-08 23:22:03 +00:00
Brian Gaeke
ed741b87c2 Save argument list alloc state by recording it as the operands of Instruction 
#-1. Other minor changes to deal with AllocInfo.Instruction becoming an int.

llvm-svn: 12246
 2004-03-08 23:22:02 +00:00
Brian Gaeke
b9b20ad428 Make AllocInfo's Instruction an int, so that we can overload it for arguments. 
(Instruction #-1's operands = argument list).

llvm-svn: 12245
 2004-03-08 23:22:01 +00:00
Chris Lattner
9414c55663 Switch to using edge profiling information as the basic source of profile info 
from using basic block counts.

llvm-svn: 12242
 2004-03-08 22:04:08 +00:00
Chris Lattner
83c62c84d6 Refactor implementations 
llvm-svn: 12240
 2004-03-08 21:30:35 +00:00
Chris Lattner
91ea0d3176 Import the trace class from the reoptimizer 
llvm-svn: 12236
 2004-03-08 20:57:27 +00:00
Chris Lattner
de661f7219 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
94d2b3a524 Adjust to new interface 
llvm-svn: 12231
 2004-03-08 18:51:45 +00:00
Chris Lattner
f3a838662e 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
01062fb636 Initial support for edge profiling 
llvm-svn: 12225
 2004-03-08 17:54:34 +00:00
Chris Lattner
d40842737b Split utility functions out of BlockProfiling.cpp 
llvm-svn: 12224
 2004-03-08 17:06:13 +00:00
Chris Lattner
41c4dc98a7 finegrainify namespacification 
llvm-svn: 12221
 2004-03-08 16:45:53 +00:00
Chris Lattner
e44cc1372e 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
38c2e1d1df Implement test/Regression/Assembler/2004-03-07-FunctionAddressAlignment.llx 
llvm-svn: 12218
 2004-03-08 06:17:35 +00:00
Chris Lattner
23980d3a7c 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
aa5d8cb72f Eliminate nightmarish API 
llvm-svn: 12214
 2004-03-08 06:11:10 +00:00
Chris Lattner
df5ebdc8b1 Eliminate a REALLY HORRIBLE API: mutateReferences, which is gross gross gross. 
llvm-svn: 12212
 2004-03-08 06:09:57 +00:00
Chris Lattner
1ae4150e31 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
a7180252e6 Avoid allocating special registers a bit more robustly 
llvm-svn: 12207
 2004-03-08 03:48:07 +00:00
Chris Lattner
a55628694a 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
9a9b1c4822 Rearrange and refactor some code. No functionality changes. 
llvm-svn: 12203
 2004-03-08 01:18:36 +00:00
Chris Lattner
933f605592 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
ebebe8f4a0 Implement: ArgumentPromotion/chained.ll 
llvm-svn: 12200
 2004-03-07 22:52:53 +00:00
Chris Lattner
8494ba277f Fix another minor bug, exposed by perlbmk 
llvm-svn: 12198
 2004-03-07 22:43:27 +00:00
Chris Lattner
ca3b90f308 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
45cf084497 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
4415950211 New LLVM pass: argument promotion. This version only handles simple scalar 
variables.

llvm-svn: 12193
 2004-03-07 21:29:54 +00:00
Alkis Evlogimenos
65649a50e9 Add memory operand version of conditional move. 
llvm-svn: 12190
 2004-03-07 03:19:11 +00:00
Alkis Evlogimenos
02e8f14c6a As I wrote in the docs, simple is the default spiller :-) 
llvm-svn: 12189
 2004-03-06 23:08:44 +00:00
Alkis Evlogimenos
467364b706 Add simple spiller. 
llvm-svn: 12188
 2004-03-06 22:38:29 +00:00
Brian Gaeke
4bb4ec2388 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
855518207c 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
813f0d8512 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
a265c3c4df Make prolog align stack properly. Make epilog not touch any registers. 
llvm-svn: 12183
 2004-03-06 05:31:21 +00:00
Brian Gaeke
b4258231ca Emit register names in lowercase, as required by the assembler. 
llvm-svn: 12182
 2004-03-06 05:30:21 +00:00
Brian Gaeke
13f3e2f254 Teach getRegClassForType where to find FP registers 
llvm-svn: 12180
 2004-03-06 03:54:13 +00:00
Chris Lattner
5a9cae47a4 Fix a minor bug 
llvm-svn: 12169
 2004-03-05 22:04:07 +00:00
Misha Brukman
75729872be Unbreak the build on Sparc. 
llvm-svn: 12161
 2004-03-05 20:04:40 +00:00