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Author SHA1 Message Date
Chris Lattner
9f0237ca85 Fix Regression/CodeGen/PowerPC/2004-12-12-ZeroSizeCommon.ll, and all programs 
when compiled with debug information.

llvm-svn: 18835
 2004-12-12 20:36:19 +00:00
Chris Lattner
b5f4ad43d5 New testcase that the PPC backend miscompiles. It is emitting 
.comm _X,0

For X, which makes the linker thing that X is never defined.

llvm-svn: 18834
 2004-12-12 20:34:06 +00:00
Chris Lattner
dc33000e67 CSE calls to getTypeSize. 
llvm-svn: 18833
 2004-12-12 20:31:00 +00:00
Chris Lattner
0a2feabdc9 Properly implement copying of a global, fixing the 255.vortex & povray 
failures from last night.

llvm-svn: 18832
 2004-12-12 19:34:41 +00:00
Chris Lattner
9e7ce53b82 Simplify code and do not invalidate iterators. 
This fixes a crash compiling TimberWolfMC that was exposed due to recent
optimizer changes.

llvm-svn: 18831
 2004-12-12 18:23:20 +00:00
Chris Lattner
6131b06f73 Use the target triple to pick this target. 
llvm-svn: 18830
 2004-12-12 17:40:28 +00:00
Chris Lattner
4d234c23f1 Get rid of subbullets for all of the "known problems" section. None of the 
other sections have subbullets, and it make the TOC look like the whole
document is known problems!

llvm-svn: 18829
 2004-12-12 17:20:23 +00:00
Brian Gaeke
757a3aa9b9 Complete the list of MultiSource failures. 
llvm-svn: 18826
 2004-12-12 08:22:11 +00:00
Chris Lattner
c2fcc2c8ca Do not internalize a module if -link-as-library is passed. 
llvm-svn: 18825
 2004-12-12 07:53:51 +00:00
Brian Gaeke
a440424596 hbd should be working now. 
llvm-svn: 18824
 2004-12-12 07:42:59 +00:00
Brian Gaeke
ee60e35a28 Finally enable the setcc-branch folding code. 
Also, fix a bug where ubyte 255 would sometimes be output as -1. This
was afflicting hbd.

llvm-svn: 18823
 2004-12-12 07:42:58 +00:00
Brian Gaeke
09c4a78ece Add (currently disabled) code for canFoldSetCC 
llvm-svn: 18820
 2004-12-12 06:22:30 +00:00
Chris Lattner
97adae1fa4 Though the previous xform applies to literally dozens (hundreds?) of variables 
in SPEC, the subsequent optimziations that we are after don't play with
with FP values, so disable this xform for them.  Really we just don't want
stuff like:

double G;   (always 0 or 412312.312)
  = G;

turning into:

bool G_b;
  = G_b ? 412312.312 : 0;

We'd rather just do the load.

-Chris

llvm-svn: 18819
 2004-12-12 06:03:06 +00:00
Brian Gaeke
55c163e41e Add stubs for setcc-branch folding support. 
llvm-svn: 18818
 2004-12-12 06:01:26 +00:00
Chris Lattner
f125dc0e49 If a variable can only hold two values, and is not already a bool, shrink it 
down to actually BE a bool.  This allows simple value range propagation
stuff work harder, deleting comparisons in bzip2 in some hot loops.

This implements GlobalOpt/integer-bool.ll, which is the essence of the
loop condition distilled into a testcase.

llvm-svn: 18817
 2004-12-12 05:53:50 +00:00
Chris Lattner
ff477f8594 New testcase. Shrinking the variable to a bool allows instcombine to delete 
the condition.

llvm-svn: 18816
 2004-12-12 05:52:12 +00:00
Chris Lattner
02c04bbf45 If one side of and/or is known to be 0/-1, it doesn't matter 
if the other side is overdefined.

This allows us to fold conditions like:  if (X < Y || Y > Z) in some cases.

llvm-svn: 18807
 2004-12-11 23:15:19 +00:00
Chris Lattner
3ec804b7f5 New testcase. If one side of and/or is known to be 0/-1, it doesn't matter 
if the other side is overdefined.

llvm-svn: 18806
 2004-12-11 23:14:40 +00:00
Brian Gaeke
5d213ad8c3 Print llvm code one function at a time. 
llvm-svn: 18805
 2004-12-11 22:17:07 +00:00
Chris Lattner
5ba315dbbe Check in the file I forgot last night, to solve all of the crashes in every 
test in the suite.  :(

llvm-svn: 18804
 2004-12-11 22:10:29 +00:00
Brian Gaeke
80831ad19a JIT should print LLVM each function before selecting instructions for it. 
llvm-svn: 18803
 2004-12-11 18:41:09 +00:00
Reid Spencer
e43fb31a1f Rename Path::get -> Path::toString 
llvm-svn: 18802
 2004-12-11 17:37:01 +00:00
Chris Lattner
dfd5d7cd7e Update test 
llvm-svn: 18801
 2004-12-11 17:13:19 +00:00
Chris Lattner
59ce936426 Only cound if we actually made a change. 
llvm-svn: 18800
 2004-12-11 17:00:14 +00:00
Chris Lattner
8378361f0c The split bb is really the exit of the old function 
llvm-svn: 18799
 2004-12-11 16:59:54 +00:00
Reid Spencer
c14cde5487 A little cleanup on this file. 
llvm-svn: 18798
 2004-12-11 07:16:54 +00:00
Chris Lattner
e449e6c74e New feature 
llvm-svn: 18797
 2004-12-11 06:10:52 +00:00
Chris Lattner
06bfa390f6 Two bug fixes: 
1. Actually increment the Statistic for the GV elim optzn
 2. When resolving undef branches, only resolve branches in executable blocks,
    avoiding marking a bunch of completely dead blocks live.  This has a big
    impact on the quality of the generated code.

With this patch, we positively rip up vortex, compiling Ut_MoveBytes to a
single memcpy call. In vortex we get this:

     12 ipsccp           - Number of globals found to be constant
    986 ipsccp           - Number of arguments constant propagated
   1378 ipsccp           - Number of basic blocks unreachable
   8919 ipsccp           - Number of instructions removed

llvm-svn: 18796
 2004-12-11 06:05:53 +00:00
Chris Lattner
5af0ef5c44 Do not delete the entry block to a function. 
llvm-svn: 18795
 2004-12-11 05:32:19 +00:00
Brian Gaeke
220fb4f8cd Bools are *also* not ints. Sigh. Furthermore, most of the TargetMachine 
ctor parameters can be defaulted.

Print the transformed llvm code input to the instruction selector
when -print-machineinstrs is on, just like V9.

llvm-svn: 18794
 2004-12-11 05:19:04 +00:00
Brian Gaeke
24ea5d3dd7 Look for many more moves to fold (previously, we only 
*or g0, x      add g0, x          recognized * as a move)
 or  x, g0     add  x, g0
 or  0, x      add  0, x
 or  x, 0      add  x, 0

llvm-svn: 18793
 2004-12-11 05:19:03 +00:00
Brian Gaeke
948a8145bf Make GEPs not suck so much: 
* Don't emit the Index * ElementSize multiply if Index is a constant.
* Use a shift, not a multiply, if ElementSize is 1/2/4/8.
* If ElementSize fits in the immediate field of SMUL, then put it there.

Fix a bug where struct offsets might be truncated (ConstantSInt::get is
now used instead of ConstantInt::get).

llvm-svn: 18792
 2004-12-11 05:19:02 +00:00
Brian Gaeke
e0643b792b Update lists of failing benchmarks, including info on which 
ones are failing in cbe.

llvm-svn: 18791
 2004-12-11 05:19:01 +00:00
Chris Lattner
943f94d2b3 Implement Transforms/SCCP/ipsccp-gvar.ll, by tracking values stored to 
non-address-taken global variables.

llvm-svn: 18790
 2004-12-11 05:15:59 +00:00
Chris Lattner
f86d071b5a New testcase that ipsccp should handle. 
llvm-svn: 18789
 2004-12-11 05:14:55 +00:00
Reid Spencer
851533abfd Fix some minor spellos and grammaros. 
llvm-svn: 18788
 2004-12-11 05:12:57 +00:00
Reid Spencer
17ce5e3519 Revert the last patch. We really do need SimplyCFG. 
llvm-svn: 18787
 2004-12-11 03:03:54 +00:00
Chris Lattner
beeab3a124 Fix a bug where we could delete dead invoke instructions with uses. 
In functions where we fully constant prop the return value, replace all
ret instructions with 'ret undef'.

llvm-svn: 18786
 2004-12-11 02:53:57 +00:00
Reid Spencer
e2af9dc813 Path::get -> Path::toString 
llvm-svn: 18785
 2004-12-11 00:14:15 +00:00
Reid Spencer
388d091dde Remove this pass as its no longer needed. 
llvm-svn: 18783
 2004-12-10 22:55:35 +00:00
Chris Lattner
808f19c775 This pass is no longer needed. 
llvm-svn: 18782
 2004-12-10 22:30:32 +00:00
Chris Lattner
d1d00e017b Implement SCCP/ipsccp-conditional.ll, by totally deleting dead blocks. 
llvm-svn: 18781
 2004-12-10 22:29:08 +00:00
Chris Lattner
4f2c984266 New testcase 
llvm-svn: 18780
 2004-12-10 22:28:49 +00:00
Reid Spencer
84d16d145f Get rid of warning from flex. 
llvm-svn: 18779
 2004-12-10 21:59:47 +00:00
Chris Lattner
5be2c2e299 Fix SCCP/2004-12-10-UndefBranchBug.ll 
llvm-svn: 18776
 2004-12-10 20:41:50 +00:00
Chris Lattner
d104c10aa5 Add missing accessor. 
llvm-svn: 18775
 2004-12-10 20:35:47 +00:00
Chris Lattner
3c31189583 Make sure to link the target-triple as well, so it ends up in the .llvm.bc file 
llvm-svn: 18774
 2004-12-10 20:26:15 +00:00
Chris Lattner
cdc1755a98 New testcase that SCCP miscompiles. Luckily this is extremely unlikely to 
happen in practice, but IP-SCCP can trigger it.

llvm-svn: 18773
 2004-12-10 20:10:23 +00:00
Reid Spencer
d364db5bc5 Fix output for Flexing to not print full path of source. 
llvm-svn: 18769
 2004-12-10 19:44:16 +00:00
Chris Lattner
145e42631e Check in the right test 
llvm-svn: 18767
 2004-12-10 17:43:43 +00:00