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1109 Commits

Author SHA1 Message Date
Misha Brukman
55695cc963 Add comments to describe what these functions actually do. 
llvm-svn: 9370
 2003-10-22 05:50:40 +00:00
Misha Brukman
f79e50487f * Use <cmath> instead of <math.h> 
* Order #includes according to LLVM coding standards

llvm-svn: 9369
 2003-10-22 05:09:56 +00:00
Misha Brukman
7456b8a58d Removed completely duplicated function comment (an identical one appears later). 
llvm-svn: 9368
 2003-10-22 04:55:09 +00:00
Misha Brukman
ed0f9660bc No, really, order the #includes correctly. 
llvm-svn: 9367
 2003-10-22 04:51:36 +00:00
Misha Brukman
c40b8306f6 * Fix order of #includes to follow style guide 
* It's no longer a BasicBlock pass: update comment on run() method
* Fix placement of braces to be consistent
* Delete extraneous whitespace

llvm-svn: 9361
 2003-10-22 03:27:45 +00:00
Misha Brukman
f8d45938f8 Converted tabs to spaces. 
llvm-svn: 9360
 2003-10-22 03:10:26 +00:00
Chris Lattner
7a75f6b7d4 Hrm, unbreak stuph :( 
llvm-svn: 9334
 2003-10-21 17:22:23 +00:00
Chris Lattner
19f471f002 Fix preselection/lowerswitches bug 
llvm-svn: 9333
 2003-10-21 16:29:23 +00:00
Chris Lattner
2c063c848d Pull the PHI special case into it's own visit* method 
llvm-svn: 9332
 2003-10-21 16:09:23 +00:00
Chris Lattner
4b8ce1c80d The lastOp operand is never used 
llvm-svn: 9331
 2003-10-21 16:06:07 +00:00
John Criswell
4746befea3 Added LLVM copyright notice. 
llvm-svn: 9324
 2003-10-21 15:29:18 +00:00
John Criswell
de34542f41 Added LLVM copyright header. 
llvm-svn: 9321
 2003-10-21 15:17:13 +00:00
Chris Lattner
bec3b4ede1 Preselection is _not_ a basicblock pass, because it adds global variables to 
the module.  This change converts it from being a basic block pass to being
a simple pass.  This allows elimination of the annotation and simplification
of the logic for moving constants into global variables.

llvm-svn: 9320
 2003-10-21 14:49:19 +00:00
Vikram S. Adve
b289dff9a8 When opcodes like ADD were split into reg. and immed. versions (ADDi and ADDr), 
this code wasn't fixed correctly so it missed copy operations that used ADDi.

llvm-svn: 9318
 2003-10-21 12:29:45 +00:00
Vikram S. Adve
abf40e897c Why does g++ not even generate a warning when you miss a break statement? 
llvm-svn: 9317
 2003-10-21 12:28:27 +00:00
Vikram S. Adve
062fda7446 Implement the new varargs instructions and intrinsics. 
llvm-svn: 9316
 2003-10-21 11:25:09 +00:00
John Criswell
71d2894956 Added LLVM copyright notice to Makefiles. 
llvm-svn: 9312
 2003-10-20 22:26:57 +00:00
Brian Gaeke
f9b97fda86 Goodbye, AddRegNumToValues 
llvm-svn: 9309
 2003-10-20 20:44:03 +00:00
John Criswell
b402729b30 Added LLVM project notice to the top of every C++ source file. 
Header files will be on the way.

llvm-svn: 9298
 2003-10-20 19:43:21 +00:00
Brian Gaeke
9501118e3b Minor leftover fixups from replaceMachineCodeForFunction () change. 
llvm-svn: 9295
 2003-10-20 17:59:09 +00:00
Brian Gaeke
b4ceb43a43 Make replaceMachineCodeForFunction() return void. 
llvm-svn: 9289
 2003-10-20 15:17:12 +00:00
Brian Gaeke
afbe8787cc Make replaceMachineCodeForFunction return void. 
llvm-svn: 9288
 2003-10-20 15:15:17 +00:00
Chris Lattner
332429f023 Apparently the dependencies are wrong for this file, so it didn't rebuild it 
when changing Instruction.def.  :(

llvm-svn: 9286
 2003-10-20 14:12:52 +00:00
Chris Lattner
c4f8226aaf Emit x86 instructions for: A = B op C, where A and B are 16-bit registers, 
C is a constant which can be sign-extended from 8 bits without value loss,
and op is one of: add, sub, imul, and, or, xor.

This allows the JIT to emit the one byte version of the constant instead of
the two or 4 byte version.  Because these instructions are very common, this
can save a LOT of code space.  For example, I sampled two benchmarks, 176.gcc
and 254.gap.

BM        Old     New    Reduction
176.gcc 2673621 2548962  4.89%
254.gap  498261  475104  4.87%

Note that while the percentage is not spectacular, this did eliminate
124.6 _KILOBYTES_ of codespace from gcc.  Not bad.

Note that this doesn't effect the llc version at all, because the assembler
already does this optimization.

llvm-svn: 9284
 2003-10-20 05:53:31 +00:00
Chris Lattner
c83d8249cb Further cleanups and simplifications 
llvm-svn: 9282
 2003-10-20 04:48:06 +00:00
Chris Lattner
fce0650cee Eliminate code for pointer size and endianness emulation. 
llvm-svn: 9281
 2003-10-20 04:11:23 +00:00
Misha Brukman
be506fc1c5 The Grammar Police was here. 
llvm-svn: 9280
 2003-10-20 04:03:10 +00:00
Chris Lattner
5a577c0b28 * Rename X86::IMULr16 -> X86::IMULrr16 
* Implement R1 = R2 * C where R1 and R2 are 32 or 16 bits. This avoids an
  extra copy into a register, reducing register pressure.

llvm-svn: 9278
 2003-10-20 03:42:58 +00:00
Chris Lattner
87843f87b8 Change the Opcode enum for PHI nodes from "Instruction::PHINode" to "Instruction::PHI" to be more consistent with the other instructions. 
llvm-svn: 9269
 2003-10-19 21:34:28 +00:00
Chris Lattner
3d519c7bab * Multiplications by 2^X are turned into shifts. This factors code out of the 
getelementptr code path for use by other code paths (like malloc and alloca).
* Optimize comparisons with zero
* Generate neg, not, inc, and dec instructions, when possible.

This gives some code size wins, which might translate into performance.  We'll
see tommorow in the nightly tester.

llvm-svn: 9267
 2003-10-19 21:09:10 +00:00
Chris Lattner
57825f087d Add some new instructions. Wheee 
llvm-svn: 9266
 2003-10-19 19:25:35 +00:00
Chris Lattner
9107ee3a11 .string adds an implicit zero at the end. This is not what we wanted. 
This fixes PR#44.

llvm-svn: 9252
 2003-10-19 02:51:01 +00:00
Chris Lattner
de87c8a892 Fix bug: Jello/2003-10-18-PHINode-ConstantExpr-CondCode-Failure.llx 
This also fixes miscompilation of 176.gcc.

llvm-svn: 9249
 2003-10-19 00:26:11 +00:00
Chris Lattner
0a276257ae Add support for the new varargs intrinsics 
llvm-svn: 9224
 2003-10-18 05:56:40 +00:00
Chris Lattner
080765e65d Update the sparc backend to at least compile correctly with the new varargs stuff even if it's not all implemented yet. 
llvm-svn: 9223
 2003-10-18 05:55:58 +00:00
Brian Gaeke
821c0e653c You can't just blat the address into memory, you have to blat its 
displacement.

llvm-svn: 9210
 2003-10-17 21:47:25 +00:00
Brian Gaeke
21797d71d9 Implement replaceMachineCodeForFunction() for x86. 
llvm-svn: 9204
 2003-10-17 18:27:46 +00:00
Brian Gaeke
e966765990 Refactor jump insertion code from CompilationCallback() into insertJumpAtAddr(). 
Make insertFarJumpAtAddr() return void, because nothing uses its return value.
Remove some commented-out code.
Implement replaceMachineCodeForFunction() for SPARC.

llvm-svn: 9203
 2003-10-17 18:27:37 +00:00
Brian Gaeke
4380148f33 Add prototype for replaceMachineCodeForFunction(). 
llvm-svn: 9202
 2003-10-17 18:27:25 +00:00
Brian Gaeke
7157eed00f Remove extra blank line. 
llvm-svn: 9196
 2003-10-17 18:09:10 +00:00
Alkis Evlogimenos
5a1f705c88 Eliminate some extraneous code in SlotCalculator::insertVal(). 
Rename SlotCalculator::getValSlot() to SlotCalculator::getSlot(),
       SlotCalculator::insertValue() to SlotCalculator::getOrCreateSlot(),
       SlotCalculator::insertVal() to SlotCalculator::insertValue(), and
       SlotCalculator::doInsertVal() to SlotCalculator::doInsertValue().

llvm-svn: 9190
 2003-10-17 02:02:40 +00:00
Brian Gaeke
edea9eca83 Fix typo in comment. 
llvm-svn: 9187
 2003-10-16 23:45:05 +00:00
Chris Lattner
f46c45682a Add support for 'weak' linkage. 
llvm-svn: 9171
 2003-10-16 18:29:00 +00:00
Chris Lattner
f2ed60c0b7 Decrease usage of use_size() 
llvm-svn: 9135
 2003-10-15 16:48:29 +00:00
Chris Lattner
c115e75755 Output a contorted sequence of instructions to make sure that we don't access 
off the bottom of the stack.  This fixes PR#41

llvm-svn: 9114
 2003-10-14 19:09:05 +00:00
Chris Lattner
907de53acb Disable the leaf function optimization, which is apparently not legal on 
X86/linux.  :(  The problem is that a signal delivered while the function
is executing could clobber the functions stack.  This is a partial fix
for PR41.

llvm-svn: 9113
 2003-10-14 18:52:41 +00:00
Brian Gaeke
add2fc5294 Remove WordsEmitted statistic; there's already a non-backend-specific 
jello statistic for this (just divide #-bytes-of-code-emitted by 4).

Rewrite head-of-file comment.

llvm-svn: 9098
 2003-10-13 19:51:20 +00:00
Chris Lattner
b6c8569f05 Regularize header file comments 
llvm-svn: 9071
 2003-10-13 03:32:08 +00:00
Brian Gaeke
acbc37a19e Don't include "Config/stdlib.h". 
llvm-svn: 9037
 2003-10-10 19:12:22 +00:00
Brian Gaeke
e5249bf429 Include <cstdio> instead of <stdio.h>. 
llvm-svn: 9032
 2003-10-10 18:46:52 +00:00