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Author SHA1 Message Date
Evan Cheng
2e9343d630 Recognize arm triplets. 
llvm-svn: 68229
 2009-04-01 18:54:56 +00:00
Dan Gohman
770f4158e5 Use CHAR_BIT instead of hard-coding 8 in several places where it 
is appropriate. This helps visually differentiate host-oriented
calculations from target-oriented calculations.

llvm-svn: 68227
 2009-04-01 18:45:54 +00:00
Ted Kremenek
3ba6a84085 Constify method to make VC++ happy. Patch by Brian Diekelman! 
llvm-svn: 68222
 2009-04-01 18:24:22 +00:00
Dan Gohman
818a08f22e Use LLVM type names instead of C type names in comments, to be 
less ambiguous and less C-specific.

llvm-svn: 68219
 2009-04-01 18:10:16 +00:00
Bob Wilson
5b42ebe6a9 Fix PR3862: Recognize some ARM-specific constraints for immediates in inline 
assembly.

llvm-svn: 68218
 2009-04-01 17:58:54 +00:00
Dan Gohman
a134448980 Revert r68172. It caused regressions in 
Applications/Burg/burg
  Applications/ClamAV/clamscan
and many other tests.

llvm-svn: 68211
 2009-04-01 16:37:47 +00:00
Misha Brukman
31c62f9435 Fixed spelling. 
llvm-svn: 68209
 2009-04-01 16:13:29 +00:00
Ted Kremenek
e5641394b7 CMake: Have generated Xcode projects also contain the LLVM header files. 
llvm-svn: 68206
 2009-04-01 15:40:21 +00:00
Nick Lewycky
8751bd79d6 Detect that we're building from a git checkout like we do for cvs and svn. 
Based on a patch by Nicolas Trangez on the unladen-swallow mailing list!

llvm-svn: 68187
 2009-04-01 04:39:25 +00:00
Chris Lattner
437755672d hopefully fix an apparent build error on windows. 
llvm-svn: 68175
 2009-04-01 02:03:38 +00:00
Chris Lattner
1f4b1f7866 fix a serious regression I introduced in my previous patch. 
llvm-svn: 68173
 2009-04-01 01:43:03 +00:00
Owen Anderson
d7c837bb4b Enhance GVN to propagate simple conditionals. This fixes PR3921. 
llvm-svn: 68172
 2009-04-01 01:20:45 +00:00
Misha Brukman
a47cb48efd include Makefile.common before using $(BuildMode) to get its definition 
llvm-svn: 68167
 2009-04-01 00:35:00 +00:00
Misha Brukman
ea884c9e5e * Fixed spelling of `invertible' 
* Simplified if statement

llvm-svn: 68163
 2009-04-01 00:15:46 +00:00
Douglas Gregor
aaa9263fc6 Allow the use of pointers to const within PointerUnion. 
llvm-svn: 68159
 2009-03-31 23:19:54 +00:00
Chris Lattner
2dd3b48ac1 add a converting operator 
llvm-svn: 68158
 2009-03-31 23:09:51 +00:00
Chris Lattner
000abfca03 reimplement BitcodeReaderValueList in terms of WeakVH instead of making 
it be an LLVM IR User object.

llvm-svn: 68156
 2009-03-31 22:55:09 +00:00
Chris Lattner
87466e0995 Make the key of ValueRankMap an AssertingVH, so that we die violently 
if it dangles.

llvm-svn: 68150
 2009-03-31 22:13:29 +00:00
Chris Lattner
939313c44a Add two new classes: WeakVH and AssertingVH. These are both "ValueHandles", 
which are effectively smart pointers to Value*'s.  They are both very light
weight and simple, and react to values being destroyed or being RAUW'd.

WeakVN does a best effort to follow a value around, including through RAUW 
operations and will get nulled out of the value is destroyed.  This is useful
for the eventual "metadata that references a value" work, because it is a
reference to a value that does not show up on its use_* list.

AssertingVH is a pointer that compiles down to a dumb raw pointer when 
assertions are disabled.  When enabled, it emits an assertion if the 
pointed-to value is destroyed while it is still being referenced.  This
is very useful for Maps and other things, and should have caught the recent
bugs in CallGraph and Reassociate, for example.

llvm-svn: 68149
 2009-03-31 22:11:05 +00:00
Chris Lattner
982ca20570 teach PointerLikeTypeTraits that all pointers to pointers may only be 4-byte aligned. 
llvm-svn: 68147
 2009-03-31 21:28:39 +00:00
Chris Lattner
dd41c286e5 add some accessors so I can play games with DenseMaps. 
llvm-svn: 68145
 2009-03-31 20:57:23 +00:00
Evan Cheng
c419350132 Throttle back "fold select into operand" transformation. InstCombine should not generate selects of two constants unless they are selects of 0 and 1. 
e.g.
define i32 @t1(i32 %c, i32 %x) nounwind {
       %t1 = icmp eq i32 %c, 0
       %t2 = lshr i32 %x, 18
       %t3 = select i1 %t1, i32 %t2, i32 %x
       ret i32 %t3
}

was turned into

define i32 @t2(i32 %c, i32 %x) nounwind {
       %t1 = icmp eq i32 %c, 0
       %t2 = select i1 %t1, i32 18, i32 0
       %t3 = lshr i32 %x, %t2
       ret i32 %t3
}

For most targets, that means materializing two constants and then a select. e.g. On x86-64

movl    %esi, %eax
shrl    $18, %eax
testl   %edi, %edi
cmovne  %esi, %eax
ret

=>

xorl    %eax, %eax
testl   %edi, %edi
movl    $18, %ecx
cmovne  %eax, %ecx
movl    %esi, %eax
shrl    %cl, %eax
ret

Also, the optimizer and codegen can reason about shl / and / add, etc. by a constant. This optimization will hinder optimizations using ComputeMaskedBits.

llvm-svn: 68142
 2009-03-31 20:42:45 +00:00
Evan Cheng
0674a512bf Fully general expansion of integer shift of any size. 
llvm-svn: 68134
 2009-03-31 19:39:24 +00:00
Evan Cheng
44fdb5d570 i128 shift libcalls are not available on x86. 
llvm-svn: 68133
 2009-03-31 19:38:51 +00:00
Dan Gohman
86e4d0130c Reapply 68073, with fixes. EH Landing-pad basic blocks are not 
entered via fall-through. Don't miss fallthroughs from blocks
terminated by conditional branches. Also, move
isOnlyReachableByFallthrough out of line.

llvm-svn: 68129
 2009-03-31 18:39:13 +00:00
Mikhail Glushenkov
98603f97fa Do not pass '-relocation-model=pic' to llc. 
Does not work well on 32 bit targets. Bug reported by Albert Graef.

This patch also adds new "-Wllc,option" syntax to pass options to llc.

llvm-svn: 68127
 2009-03-31 18:33:54 +00:00
Douglas Gregor
50b29cfe51 Stop guessing, start thinking, and make PointerUnion3::is actually be correct. 
llvm-svn: 68126
 2009-03-31 18:31:03 +00:00
Dan Gohman
9f7d1f2bd4 Add an explicit -asm-verbose to these tests, to make it 
possible to run the tests with -asm-verbose defaulting
to false.

llvm-svn: 68124
 2009-03-31 18:20:47 +00:00
Devang Patel
7fa69ef109 Update call graph after inlining invoke. 
Patch by Jay Foad.

llvm-svn: 68120
 2009-03-31 17:36:12 +00:00
Daniel Dunbar
aec3d9857f Add llvm::sys::getHostTriple and remove 
llvm::sys::getOS{Name,Version}.

Right now the implementation just derives from LLVM_HOSTTRIPLE (which
is wrong, but it doesn't look like we have a define for the target
triple). Ideally this routine would actually be able to compute the
triple for targets we care about.

llvm-svn: 68118
 2009-03-31 17:30:15 +00:00
Dan Gohman
5f64e10d8d Minor top-level comment fix. 
llvm-svn: 68113
 2009-03-31 16:51:18 +00:00
Dan Gohman
9ab58351ba Tidy up some comments. 
llvm-svn: 68112
 2009-03-31 16:48:35 +00:00
Dan Gohman
ae2ffc985b Add a comment. 
llvm-svn: 68111
 2009-03-31 16:46:45 +00:00
Rafael Espindola
3d866ac20c remove unused arguments. 
llvm-svn: 68109
 2009-03-31 16:16:57 +00:00
Bill Wendling
28fad6fcc1 Really temporarily revert r68073. 
llvm-svn: 68100
 2009-03-31 08:42:40 +00:00
Bill Wendling
1c40c8c242 Oy! When reverting r68073, I added in experimental code. Sorry... 
llvm-svn: 68099
 2009-03-31 08:41:31 +00:00
Owen Anderson
59cff6919d Remove the "fast" cases for spill and restore point determination, as these were subtlely wrong in obscure cases. Patch the testcase 
to account for this change.

llvm-svn: 68093
 2009-03-31 08:27:09 +00:00
Bill Wendling
4706abded2 Revert r68073. It's causing a failure in the Apple-style builds. 
llvm-svn: 68092
 2009-03-31 08:26:26 +00:00
Chris Lattner
95a32aa18b shrink subclassid, liberating some bits for future (ab)use. 
llvm-svn: 68087
 2009-03-31 07:25:22 +00:00
Dan Gohman
cba99ee717 Fix live-out reg logic to not insert over-aggressive AssertZExt 
instructions. This fixes lua.

llvm-svn: 68083
 2009-03-31 01:38:29 +00:00
Evan Cheng
5c02e62620 X86 address mode isel tweak. If the base of the address is also used by a CopyToReg (i.e. it's likely live-out), do not fold the sub-expressions into the addressing mode to avoid computing the address twice. The CopyToReg use will be isel'ed to a LEA, re-use it for address instead. 
This is not yet enabled.

llvm-svn: 68082
 2009-03-31 01:13:53 +00:00
Douglas Gregor
41ab75e9ef Really, really fix PointerUnion3::is 
llvm-svn: 68079
 2009-03-31 00:34:31 +00:00
Dan Gohman
29694088d3 Except in asm-verbose mode, avoid printing labels for blocks that are 
only reachable via fall-through edges. This dramatically reduces the
number of labels printed, and thus also the number of labels the
assembler must parse and remember.

llvm-svn: 68073
 2009-03-30 22:55:17 +00:00
Devang Patel
ec65625744 Loop Index Split can eliminate a loop if it can determin if loop body is executed only once. There was a bug in determining IV based value of the iteration for which the loop body is executed. Fix it. 
llvm-svn: 68071
 2009-03-30 22:24:10 +00:00
Douglas Gregor
0beaefea25 Make PointerUnion3::get work properly 
llvm-svn: 68067
 2009-03-30 21:44:13 +00:00
Evan Cheng
3e30bcbd69 When optimzing a mul by immediate into two, the resulting mul's should get a x86 specific node to avoid dag combiner from hacking on them further. 
llvm-svn: 68066
 2009-03-30 21:36:47 +00:00
Evan Cheng
d7824e208a Turn a 2-address instruction into a 3-address one when it's profitable even if the two-address operand is killed. 
e.g.
%reg1024<def> = MOV r1
%reg1025<def> = ADD %reg1024, %reg1026
r0            = MOV %reg1025

If it's not possible / profitable to commute ADD, then turning ADD into a LEA saves a copy.

llvm-svn: 68065
 2009-03-30 21:34:07 +00:00
Chris Lattner
ccc73c9327 update comment. 
llvm-svn: 68060
 2009-03-30 20:44:04 +00:00
Bill Wendling
76042faa52 Balance out quote in debug output. 
llvm-svn: 68059
 2009-03-30 20:32:22 +00:00
Bill Wendling
3b2cea6ef5 Fix grammar-o in comment. 
llvm-svn: 68057
 2009-03-30 20:30:02 +00:00