3c28524632
Fix an extremely subtle bug with pointer comparisons: they have to be
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unsigned because it's possible (at least in theory) to have
have both positive and negative pointers pointing to the same object.
llvm-svn: 51681
2008-05-29 15:09:15 +00:00
9e064a2180
Add a newline at the end of this file.
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llvm-svn: 51680
2008-05-29 14:38:23 +00:00
133e8040ca
Rearrange EmitLValueForField a bit to work properly for _Bool bitfields
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in unions (we don't want to do the union-specific bitcast for
bit-fields).
llvm-svn: 51678
2008-05-29 11:33:25 +00:00
045bf4ff82
Add codegen support for a few more kinds of initializer constant
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expressions.
llvm-svn: 51677
2008-05-29 11:22:45 +00:00
174d9c26f1
Add CodeGen support for alignment on globals, both for unusual natural
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alignment and alignment attributes.
llvm-svn: 51676
2008-05-29 11:10:27 +00:00
b65ff27f53
A couple minor fixes to make debug info usable for arbitrary code: don't
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emit incomplete types, because they crash llc, and always use the
logical location as the current location so we don't crash doing invalid
queries on CurLoc.
llvm-svn: 51675
2008-05-29 11:08:17 +00:00
d72a9624a1
Tentative declarations are supposed to have common linkage, not weak.
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This change makes clang generate the same thing as llvm-gcc.
llvm-svn: 51674
2008-05-29 11:03:17 +00:00
5a6d0ede91
Always use packed structs. This isn't really very nice, but there's
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nothing fundamentally wrong with it. Emitting unpacked structs where
possible is more work for almost no practical benefit. We'll probably
want to fix it at some point anyway, but it's low priority.
The issue with long double in particular is that LLVM thinks an X86 long
double is 10 bytes, while clang considers it for all purposes to be
either 12 or 16 bytes, depending on the platform, even in a packed
struct.
llvm-svn: 51673
2008-05-29 10:58:49 +00:00
bb936ce207
Implementation of stdarg.h.
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llvm-svn: 51672
2008-05-29 10:40:55 +00:00
fd24ce0a99
Re-enable the newly simplified ADCE. This fixes a regression on
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Dhrystone introduced by its removal.
llvm-svn: 51669
2008-05-29 08:48:21 +00:00
7686b555e2
Replace the old ADCE implementation with a new one that more simply solves
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the one case that ADCE catches that normal DCE doesn't: non-induction variable
loop computations.
This implementation handles this problem without using postdominators.
llvm-svn: 51668
2008-05-29 08:45:13 +00:00
5e28227dbd
Implement vector shift up / down and insert zero with ps{rl}lq / ps{rl}ldq.
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llvm-svn: 51667
2008-05-29 08:22:04 +00:00
f4aece5976
Remove debugging code.
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llvm-svn: 51666
2008-05-29 08:15:48 +00:00
6892c5507f
Add nounwind.
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llvm-svn: 51665
2008-05-29 07:09:24 +00:00
0252be178d
XOR?RI instructions aren't as cheap as moves.
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llvm-svn: 51664
2008-05-29 03:46:36 +00:00
3a9fba5a72
convert more operand loops to iterator formulation
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llvm-svn: 51663
2008-05-29 01:59:18 +00:00
7a1a8eb6e2
Implement "AsCheapAsAMove" for some obviously cheap instructions: xor and the
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like.
llvm-svn: 51662
2008-05-29 01:02:09 +00:00
f712664ec3
convert another operand loop to iterator formulation
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llvm-svn: 51661
2008-05-29 00:51:08 +00:00
3f6bb2713e
Add a flag to indicate that an instruction is as cheap (or cheaper) than a move
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instruction to execute. This can be used for transformations (like two-address
conversion) to remat an instruction instead of generating a "move"
instruction. The idea is to decrease the live ranges and register pressure and
all that jazz.
llvm-svn: 51660
2008-05-28 22:54:52 +00:00
5a83b097ed
Check the "isSafeToMove" predicate, which has a series of tests to make sure
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that it's safe to remat an instruction.
llvm-svn: 51659
2008-05-28 22:52:47 +00:00
779b4180dc
Remap VNInfo data as well when doing renumbering.
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llvm-svn: 51658
2008-05-28 22:40:08 +00:00
4f8e1ad32a
Factor the numbering computation into a separate method, and add the slightest attempt at some renumbering logic, which is currently unused.
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llvm-svn: 51652
2008-05-28 20:54:50 +00:00
ae2c57fbbe
Fix rewrite rope to keep the leaf list up-to-date as it erases leaves
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from the rope. rdar://5952468
llvm-svn: 51651
2008-05-28 18:45:56 +00:00
68079268f5
Fix PR2289: vr defined by multiple implicit_def as result of coalescing.
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llvm-svn: 51648
2008-05-28 17:40:10 +00:00
427412e7c8
Teach local register allocator to deal with landing pad MBB's.
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llvm-svn: 51647
2008-05-28 17:22:32 +00:00
34873d2134
give location info to another paren expr.
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llvm-svn: 51646
2008-05-28 16:38:23 +00:00
c5c27f7bfe
add an assertion
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llvm-svn: 51645
2008-05-28 16:35:02 +00:00
e993b80ef5
Update some comments noticed in a recent checkin
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llvm-svn: 51644
2008-05-28 16:31:36 +00:00
e438c56174
Update text to point people at the right version of the tutorial for
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their release.
llvm-svn: 51638
2008-05-28 06:16:08 +00:00
ecdefb5df7
Implement PR2370: memmove(x,x,size) -> noop.
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llvm-svn: 51636
2008-05-28 05:30:41 +00:00
f8910ab6db
Add chain inputs for loads.
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llvm-svn: 51635
2008-05-28 04:25:57 +00:00
633cd5949b
Fix CodeGen/Generic/2005-10-21-longlonggtu.ll on ia64.
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llvm-svn: 51634
2008-05-28 04:14:30 +00:00
724895625b
loads should get chains. THis helps but does not solve CodeGen/Generic/2003-05-27-phifcmpd.ll
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on ia64.
llvm-svn: 51633
2008-05-28 04:06:52 +00:00
d2c3e86cc3
Fix 2006-04-28-Sign-extend-bool.ll for ia64.
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llvm-svn: 51632
2008-05-28 04:00:06 +00:00
c2fb8d7e2b
reindent.
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llvm-svn: 51631
2008-05-28 03:59:32 +00:00
68bddb8966
Fix the encoding for two more "rm" instructions that were using MRMSrcReg.
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llvm-svn: 51630
2008-05-28 01:50:19 +00:00
5e3faf2343
Fixed X86 encoding error CVTPS2PD and CVTPD2PS when the source operand
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is a memory location
llvm-svn: 51626
2008-05-28 00:42:27 +00:00
f1e18c7c44
Don't attempt to create VZEXT_LOAD out of an extload. This an issue where the
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code generator would do something like this:
f64 = load f32 <anyext>, f32mem
v2f64 = insertelt undef, %0, 0
v2f64 = insertelt %1, 0.0, 1
into
v2f64 = vzext_load f32mem
which on x86 is movsd, when you really wanted a cvtss2sd/movsd pair.
llvm-svn: 51624
2008-05-28 00:24:25 +00:00
1c4627c282
use space insted of tabs
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llvm-svn: 51623
2008-05-28 00:06:14 +00:00
a120a521a5
Fix a couple crashes on invalid input.
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llvm-svn: 51622
2008-05-27 23:32:43 +00:00
ffdbeefc54
When the build command is xcodebuild, set the magical environment variable LDPLUSPLUS to g++ to ensure that C++ object files are linked with g++ instead of gcc.
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llvm-svn: 51621
2008-05-27 23:18:07 +00:00
f9671ecbfd
Correctly check to see if we are analyzing C++ files (skip).
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llvm-svn: 51620
2008-05-27 23:17:16 +00:00
1c56ace4df
Check first member alignment and uses packed struct if required.
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llvm-svn: 51619
2008-05-27 22:45:40 +00:00
d608074e09
Fix test case
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llvm-svn: 51618
2008-05-27 22:44:22 +00:00
ce956e0613
fix infinite recursion if a global's initializer references the global
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llvm-svn: 51617
2008-05-27 22:07:08 +00:00
29e0ad2ff1
Make Use::init() private, it breaks invariants, clients should assign or use set().
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llvm-svn: 51615
2008-05-27 21:29:38 +00:00
a61379eeea
Use Function::getEntryBlock instead of Function::begin, for clarity.
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llvm-svn: 51613
2008-05-27 20:55:29 +00:00
3ec5520286
Print debug output when any edge becomes executable, including
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the first visited edge.
llvm-svn: 51612
2008-05-27 20:47:30 +00:00
8b16aeb879
Add instcombine after global optimizations.
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llvm-svn: 51611
2008-05-27 20:42:44 +00:00
4ec1b4e3f9
Fix a word-o and add an explicit keyword.
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llvm-svn: 51610
2008-05-27 20:41:18 +00:00
Eli Friedman