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46912 Commits

Author SHA1 Message Date
Peter Collingbourne
8a70192b51 SimplifyCFG: Add Trunc, ZExt and SExt to the list of cheap instructions for phi node folding 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130526 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 18:47:25 +00:00
Daniel Dunbar
c8497b6a25 MCAsmLayout: Add support for computing the symbol offset of variables. Not 
currently used, because variables don't get reported as being "defined".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130524 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 18:20:20 +00:00
Daniel Dunbar
90604ab725 MC: Change variable symbols to be recognized as defined, by assigning their sections based on FindAssociatedSection(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130523 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 18:20:17 +00:00
Daniel Dunbar
173aa9ce32 MC/Mach-O: Update getSymbolAddress() to support evaluation of variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130522 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 18:13:42 +00:00
Daniel Dunbar
5ff919b324 MC/Mach-O: Allow emission of relocations for variables in some more cases. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130520 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 18:10:47 +00:00
Daniel Dunbar
08b9935b51 MC/Mach-O: Find section ordinal's by looking at the symbol, instead of assuming they are present in a fragment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130519 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 18:07:43 +00:00
Devang Patel
49a3ff9d17 Hoist MCLineEntry construction AsmPrinter so that anyone who derives from AsmPrinter can have line number entries. 
PR 9810



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130518 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 18:00:54 +00:00
Daniel Dunbar
0eab5c4d85 MCExpr: Add FindAssociatedSection, which attempts to mirror the 'as' semantics 
that associate sections with expressions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130517 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 18:00:03 +00:00
Daniel Dunbar
6db7fe8736 MC/AsmParser: Generalize a check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130515 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 17:53:11 +00:00
Douglas Gregor
c003229ddc Fix a C++0x portability issue with std::make_pair. Explicitly providing template arguments no longer works when the call arguments are lvalues. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130513 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 16:57:12 +00:00
Douglas Gregor
72d30f6950 Include <pthread.h> before we use pthread_self/pthread_kill 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130510 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 16:12:17 +00:00
Rafael Espindola
ac3ba1b27e The last hack for producing bit identical output with cfi on OS X. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130504 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 15:09:53 +00:00
Rafael Espindola
7b11a4cbdc Change DwarfCFIException's member variables to track what it actually 
emmits: .cfi_personality, .cfi_lsda and the moves.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130503 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 14:48:51 +00:00
Andrew Trick
d49ffe8284 Teach Thumb2 isel to fold and->rotr ==> ROR. 
Generalization of Nate Begeman's patch!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130502 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 14:18:15 +00:00
Rafael Espindola
a432997745 Factor some code to needsCFIMoves. Avoid printing moves when we don't have to. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130501 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 14:14:06 +00:00
Benjamin Kramer
ce3a022b8c This is done. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130499 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 14:09:57 +00:00
Benjamin Kramer
3224806109 Balance parentheses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130489 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 08:41:23 +00:00
Benjamin Kramer
c2e31c1461 InstCombine: turn (C1 << A) << C2) into (C1 << C2) << A) 
Fixes PR9809.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130485 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 08:15:41 +00:00
Chris Lattner
bb0fff0cb4 clean up after Sean's r127646 patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130475 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 05:40:18 +00:00
Chris Lattner
d7d030a447 use the MachineInstrBuilder operator-> to simplify some code. 
There are probably more instances of this floating around.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130474 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 05:24:29 +00:00
Rafael Espindola
4892dff07e Last bit by bit compatibility patch to MCDwarf.cpp: If a FDE with no LSDA is 
assigned to a CIE that requires one, just output a 0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130472 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 03:06:29 +00:00
Rafael Espindola
9099813bd5 Add an alternative implementation of CIE and FDE emission that outputs them 
in the same order as the one in CodeGen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130471 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 02:42:28 +00:00
Eric Christopher
6344a5f146 Update comments and checks to match reality. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130464 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 00:07:20 +00:00
Eric Christopher
299bbb23a4 Whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130463 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 00:03:10 +00:00
Eli Friedman
6e6014cfb3 Revert r130454; apparently this doesn't actually work. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130462 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 23:55:14 +00:00
Eli Friedman
2f7fcd7198 Fix a rather obscure crash caused by ARM fast-isel generating code which redefines a register. 
rdar://problem/9338332 .



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130454 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 23:03:25 +00:00
Devang Patel
5367b23f76 Preserve line number information. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130450 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 22:48:14 +00:00
Matt Beaumont-Gay
2a2116723f Coalesce some DEBUGs (moving an only-used-in-DEBUG variable's declaration into the DEBUG) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130448 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 22:26:05 +00:00
Benjamin Kramer
b0884f3f13 We require threse bits to be zero, too. 
This shouldn't happen in practice because the icmp would be a constant.
Add a check so we don't miscompile code if something goes wrong.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130446 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 21:38:51 +00:00
Nick Lewycky
7a2ba2fbe4 Only read *predecessor once so as to fix a theoretical issue where it changes 
between two reads (threading).

Fix an off-by-one in the indirect counter table that I meant to revert after an
earlier experiment. Whoops!

Implement GCOV_PREFIX. Doesn't handle GCOV_PREFIX_STRIP yet.

Fix an off-by-one in string emission. Extra whoops!

Tolerate DISubprograms that have null Function*'s attached to them. I don't yet
understand what this means, but it happens when you have a global static with
a non-trivial constructor/destructor.

Fix a crash on switch statements with a single successor (default-only).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130443 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 21:35:49 +00:00
Daniel Dunbar
f86500bc4f Target/X86/MC: Add an option for disabling arith relaxation, for my own testing 
purposes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130438 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 21:23:31 +00:00
Rafael Espindola
a0057ca13f Add the getExprForFDESymbol method that responsible for computing the 
expressions used in the FDE to refer to symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130437 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 21:04:39 +00:00
Devang Patel
77562c74e5 Beautify debug info probe output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130435 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 20:46:18 +00:00
Ted Kremenek
5d86759e0f Add MemoryBuffer::getBufferKind() to report whether a memory buffer uses malloc'ed or mmap'ed memory. This is for performance analysis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130432 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 20:34:18 +00:00
Devang Patel
81ad03c020 Remove DbgDeclare only if all uses are converted. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130431 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 20:32:02 +00:00
Lenny Maiorani
6cf081cbe5 Remove bounded StringRef::compare() since nothing but Clang SA was using it and it is just as easy to use StringRef::substr() preceding StringRef::compare() to achieve the same thing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130430 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 20:20:12 +00:00
Eli Friedman
d227eedf82 fast-isel sret calls, try 2. We actually do need to do something on x86-32. rdar://problem/9303592 . 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130429 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 20:19:12 +00:00
Benjamin Kramer
e12d583621 Fix a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130428 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 20:09:57 +00:00
Chris Lattner
1e4f44bb8a improve comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130426 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 20:02:57 +00:00
Devang Patel
81199d2545 Do not lose line number info while eliminating tail call. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130419 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 18:43:39 +00:00
Chris Lattner
0a9e3d613b final step needed to resolve PR6627, which allows us to flatten the code down to 
a nice and tidy:
  %x1 = load i32* %0, align 4
  %1 = icmp eq i32 %x1, 1179403647
  br i1 %1, label %if.then, label %if.end

instead of doing lots of loads and branches.  May the FreeBSD bootloader
long fit in its allocated space.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130416 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 18:15:47 +00:00
Chris Lattner
ad3ba6a7de code cleanups only. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130414 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 18:08:21 +00:00
Eli Friedman
6cf31b0a1a Revert r130348; causing buildbot issues on x86-32. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130412 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 18:06:10 +00:00
Devang Patel
d78bfbc6bb Add command line option to print debug info in human readable form as comment in llvm IR output. This, i.e -enable-debug-info-comment, is very useful if you want to easily find out which optimization pass is losing line number information. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130409 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 17:41:38 +00:00
Andrew Trick
88e92cf16b Reapply r130340: Fix for PR9730. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130408 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 17:30:04 +00:00
Benjamin Kramer
264ac878b2 InstCombine: Merge "(trunc x) == C1 & (and x, CA) == C2" into a single and+icmp. 
This happens when GVN widens loads. Part of PR6627.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130405 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 16:58:40 +00:00
Eric Christopher
7a20a37bac Be more layout aware here and swap the successor and branch condition 
if it means we get a fallthrough.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130404 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 16:52:09 +00:00
Chris Lattner
4756ecb375 centralize "marking for deletion" into a helper function. Pass GVN around to 
static functions instead of passing around tons of random ivars.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130403 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 16:36:48 +00:00
Chris Lattner
f07054d98a Promote toErase to be an ivar of the GVN class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130401 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 16:18:52 +00:00
Rafael Espindola
bfa27cc5d7 Add a getExprForPersonalitySymbol method to MCAsmInfo. Use it when 
converting the symbol passed to .cfi_personality into bytes is the file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130400 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 16:09:09 +00:00
Rafael Espindola
8bca4106df Mark the EH symbol global or weak if the corresponding function is. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130397 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 12:50:37 +00:00
Chandler Carruth
80d9e07262 Fix the last -Wnon-pod-memset I'm seeing. This is benign, but appears 
a bit more sinister as the memset doesn't do what the constructor does.
There seems to be a cleaner solution than a cast here though, instead we
can point the memset destination into the union its actually trying to
clear.

An alternative is to point to the Untyped member of this union. Review
appreciated, and if that is cleaner I'm happy to switch. All of these
should be functionally equivalent to the original code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130395 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 08:37:18 +00:00
Chris Lattner
4034e14985 teach GVN to widen integer loads when they are overaligned, when doing an 
wider load would allow elimination of subsequent loads, and when the wider
load is still a native integer type.  This eliminates a ton of loads on 
various benchmarks involving struct fields, though it is somewhat hobbled
by clang not being very aggressive about field alignment.

This is yet another step along the way towards resolving PR6627.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130390 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 07:29:08 +00:00
Eric Christopher
8f232d307a Let the immediate leaf pattern take transforms and switch the signed 
immediate patterns in arm to using the pattern.

Handles rdar://9299434


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130386 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 05:49:04 +00:00
Chris Lattner
4c19b17a17 move PR9803 to this readme. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130385 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 05:33:16 +00:00
Rafael Espindola
235b830328 Add a small temporary hack for producing identical eh_frame sections on OS X. 
This removes one of the main advantages of moving eh_frame to MC, but
makes the transition a lot easier to debug (run md5).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130379 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 04:04:14 +00:00
Rafael Espindola
514cecc72b Produce the EH_frame# symbols if needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130378 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 03:26:11 +00:00
Rafael Espindola
a8cfb87fa2 Forward isFunctionEHFrameSymbolPrivate. If it is false, produce the foo.eh 
symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130375 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 02:46:42 +00:00
Devang Patel
c26f5447e3 Teach dwarf writer to handle complex address expression for .debug_loc entries. 
This fixes clang generated blocks' variables' debug info.
Radar 9279956.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130373 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 02:22:40 +00:00
Eli Friedman
bd1253809b Fix a silly mistake in r130338. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130360 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 00:42:03 +00:00
Justin Holewinski
2d525c5532 PTX: support for select_cc and fixes for setcc 
- expansion of SELECT_CC into SETCC
- force SETCC result type to i1
- custom selection for handling i1 using SETCC

Patch by Dan Bailey

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130358 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 00:19:56 +00:00
Justin Holewinski
9c86533347 PTX: support for select 
- selection of SELP instruction
- new selp.ll test

Patch by Dan Bailey

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130357 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 00:19:55 +00:00
Justin Holewinski
ef342fc751 PTX: mov fix and rounding correction for cvt 
- fix typo in MOV
- correct fp rounding on CVT
- new cvt.ll test

Patch by Dan Bailey

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130356 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 00:19:54 +00:00
Justin Holewinski
8ff9cd203f PTX: support for fneg 
- selection of FNEG instruction
- new fneg.ll test

Patch by Dan Bailey

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130355 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 00:19:53 +00:00
Justin Holewinski
4fea05acfa PTX: support for zext loads and trunc stores 
- expansion of EXTLOAD and TRUNCSTORE instructions

Patch by Dan Bailey

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130354 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 00:19:52 +00:00
Justin Holewinski
5a3cb924c6 PTX: support for bitwise operations on predicates 
- selection of bitwise preds (AND, OR, XOR)
- new bitwise.ll test

Patch by Dan Bailey

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130353 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 00:19:51 +00:00
Justin Holewinski
9583a86ba8 PTX: patch to AsmPrinter 
- immediate value cast as long not int
- handles initializer for constant array

Patch by Dan Bailey

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130352 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 00:19:50 +00:00
Andrew Trick
a7707ae19a Reverting r130340 in the unlikely event that it's responsible for a llvm-gcc stage2 compiler error. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130350 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 00:13:59 +00:00
Eli Friedman
8211a6a61d fast-isel sret. We actually don't need to do anything special on x86. :) rdar://problem/9303592 . 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130348 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 23:58:52 +00:00
Rafael Espindola
60246a9622 Remove unnecessary argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130343 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 23:17:57 +00:00
Rafael Espindola
7afec9cc0f Rename getPersonalityPICSymbol to getCFIPersonalitySymbol, document it, and 
give it a bit more responsibility. Also implement it for MachO.

If hacked to use cfi, 32 bit MachO will produce

.cfi_personality 155, L___gxx_personality_v0$non_lazy_ptr

and 64 bit will produce

.cfi_presonality ___gxx_personality_v0

The general idea is that .cfi_personality gets passed the final symbol. It is
up to codegen to produce it if using indirect representation (like 32 bit
MachO), but it is up to MC to decide which relocations to create.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130341 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 23:08:15 +00:00
Andrew Trick
685f07fac2 Fixes PR9730: indvars: An asserting value handle still pointed to this value 
Modified LinearFunctionTestReplace to push the condition on the dead
list instead of eagerly deleting it. This can cause unnecessary
IV rewrites, which should have no effect on codegen and will not be an
issue once we stop generating canonical IVs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130340 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 23:00:03 +00:00
Devang Patel
e1cdf84ee5 Simplify handling of variables with complex address (i.e. blocks variables) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130339 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 22:45:24 +00:00
Eli Friedman
2790ba8e5a Make the fast-isel code for literal 0.0 a bit shorter/faster, since 0.0 is common. rdar://problem/9303592 . 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130338 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 22:41:55 +00:00
Eli Friedman
161b887506 Remove unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130337 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 22:21:02 +00:00
Rafael Espindola
018e38c6dd Fix indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130331 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 21:29:52 +00:00
Kevin Enderby
e23aea28f9 Fix a bug in the case that there is no add or subtract symbol and the offset 
value is zero so it does not add a NULL expr operand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130330 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 21:02:27 +00:00
Dan Gohman
1d7e818a38 Teach BasicAA about arm.neon.vld1 and vst1. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130327 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 20:44:28 +00:00
Devang Patel
0be77dff11 Revert r130178. It turned out to be not the optimal path to emit complex location expressions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130326 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 20:29:27 +00:00
Evan Cheng
309db7c947 If converter was being too cute. It look for root BBs (which don't have 
successors) and use inverse depth first search to traverse the BBs. However
that doesn't work when the CFG has infinite loops. Simply do a linear
traversal of all BBs work just fine.

rdar://9344645


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130324 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 19:32:43 +00:00
Dan Gohman
bddc1ca18a When analyzing functions known to only access argument pointees, 
only check arguments with pointer types. Update the documentation
of IntrReadArgMem reflect this.

While here, add support for TBAA tags on intrinsic calls.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130317 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 18:39:03 +00:00
Andrew Trick
a2a162077c Corrects an old, old typo in a case that doesn't seem to be reached in practice. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130316 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 18:17:36 +00:00
Devang Patel
7878f37cf0 Simplify cfg inserts a call to trap when unreachable code is detected. Assign DebugLoc to this new trap instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130315 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 17:59:27 +00:00
Jakob Stoklund Olesen
93e110ba34 Also add <imp-def> operands for defined and dead super-registers when rewriting. 
We cannot rely on the <imp-def> operands added by LiveIntervals in all cases as
demonstrated by the test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130313 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 17:42:31 +00:00
Rafael Espindola
ed708f9c1f Factor a bit of code to MCStreamer::EmitLabel. Keep track of the last 
non private symbol. This will be use for handling

foo:
  .cfi_startproc
  ...

On OS X where we have to create a foo.eh symbol.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130305 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 15:21:19 +00:00
Duncan Sands
089a246333 Stop trying to have instcombine preserve LCSSA form: this was not 
effective in avoiding recomputation of LCSSA form; the widespread
use of instsimplify (which looks through phi nodes) means it was
not preserving LCSSA form anyway; and instcombine is no longer
scheduled in the middle of the loop passes so this doesn't matter
anymore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130301 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 10:55:12 +00:00
Andrew Trick
104f4adeac Test case and comment for PR9633. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130294 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 05:42:17 +00:00
Eli Friedman
d5089a9794 Refactor out code to fast-isel a memcpy operation with a small constant 
length.  (I'm planning to use this to implement byval.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130274 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 01:45:07 +00:00
Rafael Espindola
9266cc400e Force some values to be absolute and align based on the FDE pointers size. A small 
step towards using .cfi_* on OS X.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130273 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 01:43:49 +00:00
Eli Friedman
547eb4fd56 Fix an edge case involving branches in fast-isel on x86. 
rdar://problem/9303306 .



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130272 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 01:34:27 +00:00
Andrew Trick
3f95c88162 Fix for PR9633 [indvars] Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed. 
Added a type check in ScalarEvolution::computeSCEVAtScope to handle the case in which operands of an
AddRecExpr in the current scope are folded.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130271 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 01:21:25 +00:00
Chris Lattner
cb5fd743a9 Enhance memdep to return clobber relation between noalias loads when 
an earlier load could be widened to encompass a later load.  For example,
if we see:

  X = load i8* P, align 4
  Y = load i8* (P+3), align 1

and we have a 32-bit native integer type, we can widen the former load
to i32 which then makes the second load redundant.  GVN can't actually
do anything with this load/load relation yet, so this isn't testable, but 
it is the next step to resolving PR6627, and a fairly general class of 
"merge neighboring loads" missed optimizations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130250 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 22:42:01 +00:00
Jakob Stoklund Olesen
9f4b893b84 Add a safe-guard against repeated splitting for some rare cases. 
The number of blocks covered by a live range must be strictly decreasing when
splitting, otherwise we can't allow repeated splitting.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130249 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 22:33:12 +00:00
Chris Lattner
d5c7f7cb5e use AA::isMustAlias to simplify some calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130248 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 21:53:34 +00:00
Chris Lattner
130131ea78 remove support for llvm.invariant.end from memdep. It is a 
work-in-progress that is not progressing, and it has issues.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130247 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 21:50:51 +00:00
Evan Cheng
554daa67bd Be careful about scheduling nodes above previous calls. It increase usages of 
more callee-saved registers and introduce copies. Only allows it if scheduling
a node above calls would end up lessen register pressure.

Call operands also has added ABI restrictions for register allocation, so be
extra careful with hoisting them above calls.

rdar://9329627


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130245 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 21:31:35 +00:00
Chris Lattner
325eeb1cd7 Transform: "icmp eq (trunc (lshr(X, cst1)), cst" to "icmp (and X, mask), cst" 
when X has multiple uses.  This is useful for exposing secondary optimizations,
but the X86 backend isn't ready for this when X has a single use.  For example,
this can disable load folding.

This is inching towards resolving PR6627.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130238 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 20:18:20 +00:00
Chris Lattner
5036ce4a64 some random cleanups, no functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130237 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 20:02:45 +00:00
Jim Grosbach
f7da8821b4 ARM and Thumb2 support for atomic MIN/MAX/UMIN/UMAX loads. 
rdar://9326019


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130234 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 19:44:18 +00:00
Rafael Espindola
fea8fea583 Print the label if we will use it in debug_frame. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130232 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 19:26:53 +00:00