Commit Graph

81960 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen 20b71e28cc Teach MachineSinking to handle easy critical edges.
Sometimes it is desirable to sink instructions along a critical edge:

x = ...
if (a && b) ...
else use(x);

The 'a && b' condition creates a critical edge to the else block, but we still
want to sink the computation of x into the block. The else block is dominated by
the parent block, so we are not pushing instructions into new code paths.

llvm-svn: 101165
2010-04-13 19:06:14 +00:00
Fariborz Jahanian dd9a259975 Turn off warning about weak_import attribute
on objc classes for Darwin. Radar 7839485.

llvm-svn: 101164
2010-04-13 19:02:07 +00:00
Evan Cheng 4d89dd8353 Fix test on non-x86 hosts.
llvm-svn: 101163
2010-04-13 18:54:04 +00:00
Evan Cheng 4ca4bc6f95 Re-apply 101075 and fix it properly. Just reuse the debug info of the branch instruction being optimized. There is no need to --I which can deref off start of the BB.
llvm-svn: 101162
2010-04-13 18:50:27 +00:00
Fariborz Jahanian 5e575c03b8 Removes a FIXME.
llvm-svn: 101161
2010-04-13 18:43:37 +00:00
Chris Lattner 6b2b064d7a Make the disassembler respect the assembler dialect when printing instructions,
patch by Marius Wachtler!

llvm-svn: 101160
2010-04-13 18:41:17 +00:00
Eric Christopher d67f66dc0c Temporarily revert r101075, it's causing invalid iterator assertions
in a nightly tester.

llvm-svn: 101158
2010-04-13 18:37:58 +00:00
Fariborz Jahanian 7e9d52aaca Variation of objc_copyStruct API generation when
property (atomic/nonatomic) is of aggregate type with
gc'able member objects) (NeXT runtime).

llvm-svn: 101156
2010-04-13 18:32:24 +00:00
Chris Lattner ff0e2a36e2 Rework the ConstStructBuilder code to emit missing initializer
elements with explicit zero values instead of with tail padding.
On an example like this:

struct foo { int a; int b; };

struct foo fooarray[] = {
    {1, 2},
    {4},
};

We now lay this out as:

@fooarray = global [2 x %struct.foo] [%struct.foo { i32 1, i32 2 }, %struct.foo { i32 4, i32 0 }]

instead of as:

@fooarray = global %0 <{ %struct.foo { i32 1, i32 2 }, %1 { i32 4, [4 x i8] zeroinitializer } }>

Preserving both the struct type of the second element, but also the array type of the entire thing.

llvm-svn: 101155
2010-04-13 18:16:19 +00:00
Evan Cheng 0a2aff2d12 Teach postra machine licm to hoist more obvious invariants, e.g. instructions with no source operands.
llvm-svn: 101154
2010-04-13 18:16:00 +00:00
Chris Lattner d8d760ce66 unbreak tests.
llvm-svn: 101153
2010-04-13 17:57:11 +00:00
Chris Lattner cfa3e7ae6a move a bunch of ConstStructBuilder methods out of line.
llvm-svn: 101152
2010-04-13 17:45:57 +00:00
Chris Lattner 7a4a29f89a minor cleanups
llvm-svn: 101151
2010-04-13 17:39:09 +00:00
Chris Lattner a06794201d Teach HasSideEffect about InitListExprs. Not having
this caused us to codegen dead globals like this:

struct foo { int a; int b; };

static struct foo fooarray[] = {
  {1, 2},
  {4},
};

llvm-svn: 101150
2010-04-13 17:34:23 +00:00
Chris Lattner 8d269dc329 make the rewriter add a #ifndef around the #define of __attribute__.
Without it, there is no reason for a compiler that supports it to
emit the dead static globals that the rewriter labels attribute(used).

llvm-svn: 101149
2010-04-13 17:33:56 +00:00
Dan Gohman 8a2dae57e2 Add a few comments.
llvm-svn: 101148
2010-04-13 17:07:06 +00:00
Dan Gohman 9d2d053e11 Eliminate MachineBasicBlock::const_livein_iterator and make
MachineBasicBlock::livein_iterator a const_iterator, because
clients shouldn't ever be using the iterator interface to
mutate the livein set.

llvm-svn: 101147
2010-04-13 16:57:55 +00:00
Dan Gohman dcacef3188 Rename MachineFrameInfo variables to MFI, for consistency with
the rest of CodeGen.

llvm-svn: 101146
2010-04-13 16:56:45 +00:00
Dan Gohman 6b1b1e4358 Move MachineRegisterInfo's isLiveIn and isLiveOut out of line.
llvm-svn: 101145
2010-04-13 16:55:37 +00:00
Dan Gohman a1cf9fef70 Use MachineBasicBlock::isLiveIn.
llvm-svn: 101144
2010-04-13 16:53:51 +00:00
Dan Gohman 39305067ad Delete an unused member variable.
llvm-svn: 101143
2010-04-13 16:51:39 +00:00
Dan Gohman 7ef0dc2163 Teach ScalarEvolution to simplify smax and umax when it can prove
that one operand is always greater than another.

llvm-svn: 101142
2010-04-13 16:51:03 +00:00
Dan Gohman fe4b29180b Minor code micro-optimizations.
llvm-svn: 101141
2010-04-13 16:49:23 +00:00
Eric Christopher 4016dcd625 Actually... return after the check for invalid input.
llvm-svn: 101139
2010-04-13 16:41:29 +00:00
Benjamin Kramer 55cfaa37de BumpPtrAllocator::Reset() doesn't need to allocate anything. (Thanks, Jakob)
llvm-svn: 101138
2010-04-13 16:38:06 +00:00
Douglas Gregor 38ae6ab6bc Refactor and simplify the computation of implicit conversion sequences
for reference binding. The code attempted to handle both the
computation of the ICS and the actual conversion, but the latter is an
anachronism: we now use InitializationSequence for that. 

Sema::CheckReferenceInit is now a static function TryReferenceInit
that's only use within overload resolution, and has been simplified
slightly. It still needs to be updated per C++ [over.ics.ref], by
eliminating more of the lvalue/rvalue checks.

llvm-svn: 101136
2010-04-13 16:31:36 +00:00
Douglas Gregor e5e775bc8e When returning the result of a call to an object of class type, do not
return a NULL expression; return either an error or a proper
expression. Fixes PR6078.

llvm-svn: 101133
2010-04-13 15:50:39 +00:00
Douglas Gregor 538be4622c During referencing binding, only consider conversion functions for
direct reference binding when the source and target types are not
reference-related. Fixes PR6066.

llvm-svn: 101132
2010-04-13 15:07:45 +00:00
Benjamin Kramer 5d8eb779d5 Update unittest for allocator laziness.
llvm-svn: 101131
2010-04-13 15:01:26 +00:00
Benjamin Kramer 5b0650bf6e Let BumpPtrAllocator lazily allocate the first slab.
We have some code in llvm and clang where a BumpPtrAllocator is declared in a
class but never used in the common case. Stop wasting memory there.

llvm-svn: 101130
2010-04-13 14:41:51 +00:00
Zhongxing Xu 17b33ed0cf Make all cases that we don't handle explicit.
llvm-svn: 101129
2010-04-13 13:15:19 +00:00
Zhongxing Xu b6f02c3d67 Dispatch all C++ cast expr to VisitCast().
llvm-svn: 101128
2010-04-13 12:38:32 +00:00
Zhongxing Xu 7e61217d86 CFGBuilder: always add C++ member call expr as block-level expr.
llvm-svn: 101127
2010-04-13 09:38:01 +00:00
Owen Anderson b516f1c6cc Remove SCCVN from the CMake build system.
llvm-svn: 101125
2010-04-13 08:33:09 +00:00
John McCall 43314ab3ae Allow classes to befriend implicitly-declared members. Fixes PR6207 for
members of non-templated classes.

llvm-svn: 101122
2010-04-13 07:45:41 +00:00
Zhongxing Xu 7d4bc9a106 Add a cc1 option to specify the max number of nodes the analyzer can explore.
llvm-svn: 101120
2010-04-13 06:44:31 +00:00
John McCall 84821e7143 Parse constructor names in friend declarations. Part of the fix for
PR6207.

llvm-svn: 101119
2010-04-13 06:39:49 +00:00
Chris Lattner 069711865f checkpoint.
llvm-svn: 101118
2010-04-13 06:37:00 +00:00
Owen Anderson 9ed6abfe0b SCCVN, we hardly knew ye!
llvm-svn: 101117
2010-04-13 05:24:08 +00:00
Chris Lattner 33154c1fc6 Fix PR6826: GraphWriter delete the generated file before "dotty" load it,
patch by 'ether'.

llvm-svn: 101116
2010-04-13 04:35:39 +00:00
Fariborz Jahanian 33eb59a61b Remove this test for now until I can figure out
why it keeps failing on buildbot (but not for me).

llvm-svn: 101115
2010-04-13 02:16:35 +00:00
Bob Wilson af7674cbd4 Replace r101053 with a fix for getSOImmValRotate() so that it will correctly
recognize all the valid rotated immediates.  This fixes the disassembler
issue and will also help codegen for some unusual constant values.

llvm-svn: 101114
2010-04-13 02:11:48 +00:00
Dan Gohman 5867a56db8 Teach IndVarSimplify how to eliminate remainder operators where the
numerator is an induction variable. For example, with code like this:

  for (i=0;i<n;++i)
    x[i%n] = 0;

IndVarSimplify will now recognize that i is always less than n inside
the loop, and eliminate the remainder.

llvm-svn: 101113
2010-04-13 01:46:36 +00:00
John McCall 77e41c1cc6 Don't try to find a scope corresponding to the search DC for an unfound
friend declaration;  this used to be important but is now just a waste of time
plus an unreasonable assertion.  Fixes PR6174.

llvm-svn: 101112
2010-04-13 01:44:10 +00:00
Daniel Dunbar d33749b4a9 VMCore: Add Type::getIntN[Ptr]Ty, which are the obvious generic forms of
Type::getInt{1,8,...}[Ptr]Ty, so code can consistently use the methods on Type
without occasionally needed to call IntegerType::get.

llvm-svn: 101111
2010-04-13 01:39:07 +00:00
Daniel Dunbar e0a355af5d IRBuilder: Add Create{Shl,LShr,And,Or,Xor} methods from uin64_t and APInt constants.
llvm-svn: 101110
2010-04-13 01:38:57 +00:00
Fariborz Jahanian cb21e38dc5 Modify test to be darwin specific.
llvm-svn: 101109
2010-04-13 01:10:57 +00:00
Chris Lattner dc6040b357 add frontend support for -fdata-sections and -ffunction-sections,
patch by Sylvere Teissier!

llvm-svn: 101108
2010-04-13 00:38:24 +00:00
Fariborz Jahanian 08b0f66d2e Add support for objc_copyStruct to enforce
atomicity of aggregate properties in setter/getter
methods. wip.

llvm-svn: 101107
2010-04-13 00:38:05 +00:00
Chris Lattner 5b212a31a2 add llvm codegen support for -ffunction-sections and -fdata-sections,
patch by Sylvere Teissier!

llvm-svn: 101106
2010-04-13 00:36:43 +00:00