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Author SHA1 Message Date
Chris Lattner
20c3c42c02 add a note 
llvm-svn: 28787
 2006-06-14 21:26:18 +00:00
Chris Lattner
cf6b3bb376 new testcase, not currently working. 
llvm-svn: 28786
 2006-06-14 21:24:57 +00:00
Evan Cheng
191886d10f Fix support for optional input flag. 
llvm-svn: 28784
 2006-06-14 19:27:50 +00:00
Evan Cheng
242ebc9ab3 Add argument registers to the end of call operand list (partial fix). 
llvm-svn: 28783
 2006-06-14 18:17:40 +00:00
Jim Laskey
bd680a03fd Change versioning to per debug info descriptor (merged with tag.) 
llvm-svn: 28782
 2006-06-14 14:45:39 +00:00
Jim Laskey
69d5018a05 Place dwarf headers at earliest possible point. Well behaved when skipping 
functions.

llvm-svn: 28781
 2006-06-14 11:35:03 +00:00
Chris Lattner
68a0b5c8a0 Fix Transforms/LoopUnswitch/2006-06-13-SingleEntryPHI.ll, a loop unswitch 
bug exposed by the recent lcssa work.

llvm-svn: 28779
 2006-06-14 04:46:17 +00:00
Chris Lattner
49a37a58ac new testcase, distilled from povray 
llvm-svn: 28778
 2006-06-14 04:45:45 +00:00
Owen Anderson
8a0a40c7ac When asked not to delete useless PHIs, really don't delete them, no matter how 
redundant they are.

llvm-svn: 28777
 2006-06-14 04:43:14 +00:00
Chris Lattner
1b42069db1 Use the PotDoms map to memoize 'dominating value' lookup. With this patch, 
LCSSA is still the slowest pass when gccas'ing 252.eon, but now it only takes
39s instead of 289s. :)

llvm-svn: 28776
 2006-06-14 01:13:57 +00:00
Evan Cheng
fe3e6e1967 getOperandNum(): error if specified operand number is out of range. 
llvm-svn: 28775
 2006-06-13 21:47:27 +00:00
Owen Anderson
c50df7da72 Fix another instance where PHI nodes need special treatment. 
llvm-svn: 28774
 2006-06-13 20:50:09 +00:00
Owen Anderson
fab2186a2f Update isLCSSAForm to handle PHI nodes specially for live-out detection. This 
is the same as the recent patch to LCSSA.cpp.

llvm-svn: 28773
 2006-06-13 20:45:22 +00:00
Andrew Lenharth
2263835c1d I am sure I had commited this workaround before. Perhaps soon I should sort it all out 
llvm-svn: 28772
 2006-06-13 20:34:47 +00:00
Owen Anderson
f43ab30bc0 Fix a bug that was causing major slowdowns in povray. This was due to LCSSA 
not handling PHI nodes correctly when determining if a value was live-out.

This patch reduces the number of detected live-out variables in the testcase
from 6565 to 485.

llvm-svn: 28771
 2006-06-13 19:37:18 +00:00
Andrew Lenharth
a903a21a85 It really helps to be returning to the correct place 
llvm-svn: 28769
 2006-06-13 18:27:39 +00:00
Chris Lattner
bbbcb8cceb Port some bugfixes in shift handling from SimplifyDemandedBits over to 
ComputeMaskedBits.  DemandedMasks and KnownZero/One masks should never have
bits set out of the range of the base datatype.

llvm-svn: 28768
 2006-06-13 16:52:37 +00:00
Jim Laskey
422c9a610a My original test case was bogus. Reverting to crasher case. 
llvm-svn: 28767
 2006-06-13 15:22:49 +00:00
Jim Laskey
7d9997132e Tests to make sure that ComputeMaskedBits discards bits for shifts. 
llvm-svn: 28766
 2006-06-13 13:10:44 +00:00
Jim Laskey
c9a71e96ae TargetLowering::ComputeMaskedBits was not clearing reciprocal bits on shifts. 
llvm-svn: 28765
 2006-06-13 13:08:58 +00:00
Evan Cheng
2a0f3b2e79 Cygwin support: use _alloca to allocate stack if > 4k. Patch by Anton Korobeynikov. 
llvm-svn: 28764
 2006-06-13 05:14:44 +00:00
Chris Lattner
05b6364eef Teach bugpoint to kill optimization passes that run over the timeout limit, 
which allows it to debug optimizer infinite loops.  This patch is contributed
by Nick Lewycky, thanks!

llvm-svn: 28763
 2006-06-13 03:10:48 +00:00
Chris Lattner
f04cf06b5a Decribe the "implementation" keyword. 
llvm-svn: 28762
 2006-06-13 03:05:47 +00:00
Chris Lattner
6f45959365 Gaar! Don't use r11 for CR save/restore, use R0. R11 can be register 
allocated, thus live across the save/reload.  This fixes

llc-beta /MultiSource/Applications/spiff/spiff
llc-beta /MultiSource/Benchmarks/sim/sim:
llc-beta /MultiSource/Benchmarks/Ptrdist/bc/bc
llc-beta /MultiSource/Benchmarks/McCat/12-IOtest/iotest:
llc-beta /MultiSource/Benchmarks/FreeBench/fourinarow/fourinarow
llc-beta /MultiSource/Benchmarks/Fhourstones-3.1/fhourstones3.1
llc-beta /MultiSource/Benchmarks/mediabench/adpcm/rawdaudio/rawdaudio
llc-beta /MultiSource/Benchmarks/mediabench/adpcm/rawcaudio/rawcaudio
llc-beta /MultiSource/Benchmarks/mediabench/g721/g721encode/encode
llc-beta /MultiSource/Benchmarks/mediabench/jpeg/jpeg-6a/cjpeg

and probably others, with -regalloc=local.

llvm-svn: 28761
 2006-06-12 23:59:16 +00:00
Chris Lattner
93ed4373c4 Fix spilling and reloading of CR regs to reload the right values. This fixes 
Olden/power (and probably others) with -regalloc=local.

llvm-svn: 28760
 2006-06-12 21:50:57 +00:00
Owen Anderson
276e728e4b Reapply my 6/9 changes. The bug Evan saw no longer occurs. 
llvm-svn: 28759
 2006-06-12 21:49:21 +00:00
Chris Lattner
649af38df3 Fix an infinite loop on Transforms/SimplifyCFG/2006-06-12-InfLoop.ll 
llvm-svn: 28758
 2006-06-12 20:18:01 +00:00
Chris Lattner
8e718346df TEstcase that makes simplifycfg infloop. 
llvm-svn: 28757
 2006-06-12 20:17:44 +00:00
Chris Lattner
d1b52e51fa Add a new -compileflags options, remove old externals location specifiers. 
People should just use -with-externals.

llvm-svn: 28756
 2006-06-12 19:03:17 +00:00
Chris Lattner
2d4ba3f9ca Make sure to update the CFG correctly if a switch only has a default dest. 
This fixes CodeGen/Generic/2006-06-12-LowerSwitchCrash.ll

llvm-svn: 28755
 2006-06-12 18:25:29 +00:00
Chris Lattner
317d8c2ae3 New testcase that crashes llc 
llvm-svn: 28754
 2006-06-12 18:24:32 +00:00
Andrew Lenharth
fe127f3de7 Let the alpha breakage begin. First Formals and RET. next Calls 
llvm-svn: 28753
 2006-06-12 18:09:24 +00:00
Andrew Lenharth
a2bda5b0e1 Start on my todo list 
llvm-svn: 28752
 2006-06-12 16:07:18 +00:00
Rafael Espindola
bcba226a99 lower more then 4 formal arguments. The offset is currently hard coded. 
implement SelectFrameIndex

llvm-svn: 28751
 2006-06-12 12:28:08 +00:00
Owen Anderson
a947d699dd Fix for 2006-06-26-MultipleExitsSingleBlock. 
If a single exit block has multiple predecessors within the loop, it will
appear in the exit blocks list more than once.  LCSSA needs to take that into
account so that it doesn't double process that exit block.

llvm-svn: 28750
 2006-06-12 07:10:16 +00:00
Owen Anderson
4796bc9bda Make sure that LCSSA works properly when it encounters an exit block that has 
more than one predecessor inside the loop.

llvm-svn: 28749
 2006-06-12 07:05:47 +00:00
Owen Anderson
15b85dbfa5 Re-commit the safe parts of my 6/9 patch. Still working on fixing the unsafe parts. 
llvm-svn: 28748
 2006-06-11 19:22:28 +00:00
Evan Cheng
d99c8e2e5f Back out Owen's 6/9 changes. They broke MultiSource/Benchmarks/Prolangs-C/bison (and perhaps others). 
llvm-svn: 28747
 2006-06-11 09:32:57 +00:00
Chris Lattner
d05099f30a Add a missing assertion that would have helped out Reid 
llvm-svn: 28746
 2006-06-10 04:16:23 +00:00
Chris Lattner
7bc8eae1f0 Work around a nasty tblgen bug where it doesn't add operands for varargs 
nodes correctly.

llvm-svn: 28745
 2006-06-10 01:15:02 +00:00
Chris Lattner
b231c3d11c Fix a problem exposed by the local allocator. CALL instructions are not marked 
as using incoming argument registers, so the local allocator would clobber them
between their set and use.  To fix this, we give the call instructions a variable
number of uses in the CALL MachineInstr itself, so live variables understands
the live ranges of these register arguments.

llvm-svn: 28744
 2006-06-10 01:14:28 +00:00
Chris Lattner
f506d91be6 Wrap to 80 cols 
llvm-svn: 28743
 2006-06-09 23:59:44 +00:00
Chris Lattner
f9bb91746c After telling GCC to type of the input file with -x asm/-x c, switch back to 
-x none, to not foul up autodetection of .a file or .dylibs.

llvm-svn: 28741
 2006-06-09 21:31:53 +00:00
Evan Cheng
cd37f47980 Don't pull in environ, not always safe. Global variables are bad anyway. 
Use execve when explicit environment variables ptr is available. Otherwise
just use execv.

llvm-svn: 28740
 2006-06-09 20:43:11 +00:00
Owen Anderson
4a0ceb1e6d Add LCSSA as a requirement for LoopUnswitch, and assert that LoopUnswitch preserves 
LCSSA.

llvm-svn: 28739
 2006-06-09 18:40:32 +00:00
Owen Anderson
6c2f7512a6 Make Loop able to verify that it is in LCSSA-form, and have the LCSSA pass assert 
on this.

llvm-svn: 28738
 2006-06-09 18:33:30 +00:00
Evan Cheng
9e5e585c89 Comments to appease sabre. 
llvm-svn: 28737
 2006-06-09 06:25:10 +00:00
Evan Cheng
8f46dba83d Minor compilation speed improvement. 
llvm-svn: 28736
 2006-06-09 06:24:42 +00:00
Evan Cheng
6039769dc1 RewriteExpr, either the new PHI node of induction variable or the 
post-increment value, should be first cast to the appropriated type (to the
type of the common expr). Otherwise, the rewrite of a use based on (common +
iv) may end up with an incorrect type.

llvm-svn: 28735
 2006-06-09 00:12:42 +00:00
Owen Anderson
0d9583aa41 Update some comments, and expose LCSSAID in preparation for having other passes 
require LCSSA.

llvm-svn: 28734
 2006-06-08 20:02:53 +00:00