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Author SHA1 Message Date
Misha Brukman
c0ac8cae1c If we're going to make the braces of functions line up for ease of readability 
and aesthetic reasons, might as well finish the job

llvm-svn: 17140
 2004-10-19 05:50:34 +00:00
Misha Brukman
be39800a89 Remove unnecessary spaces in function signature 
llvm-svn: 17139
 2004-10-19 05:49:46 +00:00
Brian Gaeke
62ecd75aeb Simplify mapping info generation. In particular, the LLVM-to-MachineInstr map 
is no longer emitted, and we do not reference any MachineCodeForInstruction
information.

llvm-svn: 17138
 2004-10-19 05:15:21 +00:00
Misha Brukman
fd9bef227a * Fit constructor initializer on a single line 
* Delete blank chars at end of line to fit into 80 cols

llvm-svn: 17137
 2004-10-19 00:29:16 +00:00
Reid Spencer
ce514b1c2c Initial automake generated Makefile template 
llvm-svn: 17136
 2004-10-18 23:55:41 +00:00
Misha Brukman
56f2d0e5fe Move code to redefine INT64_{MIN,MAX} on AIX/PowerPC to a separate header, 
because #undef becomes commented out in DataTypes.h.in due to autoheader

llvm-svn: 17135
 2004-10-18 22:14:48 +00:00
Nate Begeman
49e38c2185 Initial implementation of the strength reduction for GEP instructions in 
loops.  This optimization is not turned on by default yet, but may be run
with the opt tool's -loop-reduce flag.  There are many FIXMEs listed in the
code that will make it far more applicable to a wide range of code, but you
have to start somewhere :)

This limited version currently triggers on the following tests in the
MultiSource directory:
pcompress2: 7 times
cfrac: 5 times
anagram: 2 times
ks: 6 times
yacr2: 2 times

llvm-svn: 17134
 2004-10-18 21:08:22 +00:00
Misha Brukman
07479efa84 * AIX on Power defines INT64_MIN and INT64_MAX in ways that annoy GCC, so 
special-case those definitions
* Add comments in #ifdef/#else/#endif clauses for ease of reading

llvm-svn: 17132
 2004-10-18 18:35:21 +00:00
Misha Brukman
ed985abc65 AIX does not have mkdtemp() so emulate its behavior using mktemp() and mkdir() 
llvm-svn: 17131
 2004-10-18 17:39:45 +00:00
Chris Lattner
9f1c4d5b67 Fix miscompilations in the SparcV9 backend that were induced by this patch: 
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20041011/019311.html

llvm-svn: 17130
 2004-10-18 17:19:20 +00:00
Chris Lattner
cac643c78f Improve compatibility with VC++, patch contributed by Morten Ofstad! 
llvm-svn: 17126
 2004-10-18 15:54:17 +00:00
Chris Lattner
9e2649a7be Get this file compiling with VC++, patch contributed by Morten Ofstad. Thanks Morten! 
llvm-svn: 17125
 2004-10-18 15:43:46 +00:00
Reid Spencer
a5b7b341a4 Declare a function in the correct namespace. 
Patch contributed by Morten Ofstad. Thanks Morten!

llvm-svn: 17124
 2004-10-18 14:43:45 +00:00
Reid Spencer
2b5cfe8be8 Correction to allow compilation with Visual C++. 
Patch contributed by Morten Ofstad. Thanks Morten!

llvm-svn: 17123
 2004-10-18 14:38:48 +00:00
Chris Lattner
b1827a765a Simplify code by deleting instructions that preceed unreachable instructions. 
Simplify code by simplifying terminators that branch to blocks that start
with an unreachable instruction.

llvm-svn: 17116
 2004-10-18 04:07:22 +00:00
Chris Lattner
e058c78728 New testcase 
llvm-svn: 17115
 2004-10-18 04:06:41 +00:00
Reid Spencer
19a45269fa Actually link all the analysis passes and their dependencies. 
llvm-svn: 17114
 2004-10-18 03:32:12 +00:00
Reid Spencer
2f5d7cdf7e Remove extra comma. 
llvm-svn: 17113
 2004-10-18 03:26:21 +00:00
Reid Spencer
6afd317860 Actually link in all the analysis passes. 
llvm-svn: 17112
 2004-10-18 03:22:48 +00:00
Chris Lattner
3c1be63b41 Turn store -> null/undef into the LLVM unreachable instruction! This simple 
change hacks off 10K of bytecode from perlbmk (.5%) even though the front-end
is not generating them yet and we are not optimizing the resultant code.
This isn't too bad.

llvm-svn: 17111
 2004-10-18 03:00:50 +00:00
Chris Lattner
18333c64de Turn things with obviously undefined semantics into 'store -> null' 
llvm-svn: 17110
 2004-10-18 02:59:09 +00:00
Chris Lattner
dbfa9a5e9c My friend the invoke instruction does not dominate all basic blocks if it 
occurs in the entry node of a function

llvm-svn: 17109
 2004-10-18 01:48:31 +00:00
Chris Lattner
f7bf129037 Fix a bug that occurs when the constant value is the result of an invoke. In 
particular, invoke ret values are only live in the normal dest of the invoke
not in the unwind dest.

llvm-svn: 17108
 2004-10-18 01:21:17 +00:00
Chris Lattner
5ae94ef614 Print a semicolon for the unreacahble instruction. This fixes problems 
where C requires semicolons in some cases to indicate null statements.

llvm-svn: 17107
 2004-10-17 23:49:11 +00:00
Chris Lattner
44a7cf480d Getting ADCE to interact well with unreachable instructions seems like a nontrivial 
exercise that I'm not interested in tackling right now.  Just punt and treat them
like unwind's.

This 'fixes' test/Regression/Transforms/ADCE/unreachable-function.ll

llvm-svn: 17106
 2004-10-17 23:45:06 +00:00
Chris Lattner
215d4c9d22 New testcase that ADCE shouldn't crash on 
llvm-svn: 17105
 2004-10-17 23:44:02 +00:00
Chris Lattner
9e7ddf8596 Fix Regression/Transforms/Inline/2004-10-17-InlineFunctionWithoutReturn.ll 
If a function had no return instruction in it, and the result of the inlined
call instruction was used, we would crash.

llvm-svn: 17104
 2004-10-17 23:21:07 +00:00
Chris Lattner
062914f153 New testcase that crashes the inliner 
llvm-svn: 17103
 2004-10-17 23:20:29 +00:00
Nate Begeman
927c4cc3dc Pass -single_module option to gcc when linking dynamic libraries for use with bugpoint, so that we can bugpoint multiple .cp files 
llvm-svn: 17102
 2004-10-17 23:03:32 +00:00
Nate Begeman
1c408f7319 Generate correct stubs for weak-linked symbols 
llvm-svn: 17101
 2004-10-17 23:01:34 +00:00
Chris Lattner
c088680a5f fold gep undef, ... -> undef 
This comes up many times in perlbmk and probably others.

llvm-svn: 17100
 2004-10-17 21:54:55 +00:00
Chris Lattner
795ae57cde Remove printout, realize that instructions in the entry block dominate all 
other blocks.

llvm-svn: 17099
 2004-10-17 21:31:34 +00:00
Chris Lattner
ac92e5fcd0 When inserting PHI nodes, don't insert any phi nodes that are obviously 
unneccesary.  This allows us to delete several hundred phi nodes of the
form PHI(x,x,x,undef) from 253.perlbmk and probably other programs as well.

This implements Mem2Reg/UndefValuesMerge.ll

llvm-svn: 17098
 2004-10-17 21:25:56 +00:00
Chris Lattner
f47b3f67d9 New testcase, no PHI should be inserted. 
llvm-svn: 17097
 2004-10-17 21:25:32 +00:00
Chris Lattner
306dd8a44a Enhance hasConstantValue to ignore undef values in phi nodes. This allows it 
to think that PHI[4, undef] == 4.

llvm-svn: 17096
 2004-10-17 21:23:26 +00:00
Chris Lattner
ef0888e493 hasConstantValue will soon return instructions that don't dominate the PHI node, 
so prepare for this.

llvm-svn: 17095
 2004-10-17 21:22:38 +00:00
Chris Lattner
caf0d76a8a The first hunk corrects a bug when printing undef null values. We would print 
0->field, which is illegal.  Now we print ((foo*)0)->field.

The second hunk is an optimization to not print undefined phi values.

llvm-svn: 17094
 2004-10-17 17:48:59 +00:00
Chris Lattner
f96fb0c946 Don't print stuff out from the code generator. This broke the JIT horribly 
last night. :)  bork!

llvm-svn: 17093
 2004-10-17 17:40:50 +00:00
Reid Spencer
eb6a51b3f0 Add HAVE_BZLIB_H and HAVE_ZLIB_H tests. 
llvm-svn: 17092
 2004-10-17 17:07:29 +00:00
Reid Spencer
c4abf55b69 Update to reflect building zlib for LLVM 
llvm-svn: 17091
 2004-10-17 15:02:47 +00:00
Reid Spencer
8c10b29823 Add missing targets for install/clean 
llvm-svn: 17090
 2004-10-17 15:01:59 +00:00
Reid Spencer
210d95cffb Make the library name SparcV9 specific 
llvm-svn: 17089
 2004-10-17 15:01:12 +00:00
Reid Spencer
7ece7ff509 Consolidate the definitions 
llvm-svn: 17088
 2004-10-17 15:00:26 +00:00
Reid Spencer
9a97056275 PPC32GenCodeEmitter instead of PowerPCGenCodeEmitter 
llvm-svn: 17087
 2004-10-17 14:59:38 +00:00
Reid Spencer
021a407fd0 Add runtime directories 
llvm-svn: 17086
 2004-10-17 14:58:49 +00:00
Reid Spencer
b3942d7547 Support bytecode generation, GenCodeEmitter, etc. 
llvm-svn: 17085
 2004-10-17 14:57:12 +00:00
Reid Spencer
d3f282779f Add runtime directory, include Makefile_rules 
llvm-svn: 17084
 2004-10-17 14:56:15 +00:00
Chris Lattner
63e6bdd207 Rewrite support for cast uint -> FP. In particular, we used to compile this: 
double %test(uint %X) {
        %tmp.1 = cast uint %X to double         ; <double> [#uses=1]
        ret double %tmp.1
}

into:

test:
        sub %ESP, 8
        mov %EAX, DWORD PTR [%ESP + 12]
        mov %ECX, 0
        mov DWORD PTR [%ESP], %EAX
        mov DWORD PTR [%ESP + 4], %ECX
        fild QWORD PTR [%ESP]
        add %ESP, 8
        ret

... which basically zero extends to 8 bytes, then does an fild for an
8-byte signed int.

Now we generate this:


test:
        sub %ESP, 4
        mov %EAX, DWORD PTR [%ESP + 8]
        mov DWORD PTR [%ESP], %EAX
        fild DWORD PTR [%ESP]
        shr %EAX, 31
        fadd DWORD PTR [.CPItest_0 + 4*%EAX]
        add %ESP, 4
        ret

        .section .rodata
        .align  4
.CPItest_0:
        .quad   5728578726015270912

This does a 32-bit signed integer load, then adds in an offset if the sign
bit of the integer was set.

It turns out that this is substantially faster than the preceeding sequence.
Consider this testcase:

unsigned a[2]={1,2};
volatile double G;

void main() {
    int i;
    for (i=0; i<100000000; ++i )
        G += a[i&1];
}

On zion (a P4 Xeon, 3Ghz), this patch speeds up the testcase from 2.140s
to 0.94s.

On apoc, an athlon MP 2100+, this patch speeds up the testcase from 1.72s
to 1.34s.

Note that the program takes 2.5s/1.97s on zion/apoc with GCC 3.3 -O3
-fomit-frame-pointer.

llvm-svn: 17083
 2004-10-17 08:01:28 +00:00
Chris Lattner
bf114f32c0 Unify handling of constant pool indexes with the other code paths, allowing 
us to use index registers for CPI's

llvm-svn: 17082
 2004-10-17 07:49:45 +00:00
Chris Lattner
892b15538d Give the asmprinter the ability to print memrefs with a constant pool index, 
index reg and scale

llvm-svn: 17081
 2004-10-17 07:16:32 +00:00