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94 Commits

Author SHA1 Message Date
Chris Lattner
772ef50bf1 Fix PR6673: updating the callback should not clear the map. 
llvm-svn: 99227
 2010-03-22 23:15:57 +00:00
Chris Lattner
adff4d133f Fix the third (and last known) case of code update problems due 
to LLVM IR changes with addr label weirdness.  In the testcase, we
generate references to the two bb's when codegen'ing the first
function:

_test1:                                 ## @test1
	leaq	Ltmp0(%rip), %rax
..
	leaq	Ltmp1(%rip), %rax

Then continue to codegen the second function where the blocks
get merged.  We're now smart enough to emit both labels, producing
this code:

_test_fun:                              ## @test_fun
## BB#0:                                ## %entry
Ltmp1:                                  ## Block address taken
Ltmp0:
## BB#1:                                ## %ret
	movl	$-1, %eax
	ret

Rejoice.

llvm-svn: 98595
 2010-03-16 00:29:39 +00:00
Chris Lattner
45a0ae21b8 Implement support for the case when a reference to a addr-of-bb 
label is generated, but then the block is deleted.  Since the
value is undefined, we just emit the label right after the entry 
label of the function.  It might matter that the label is in the
same section as the function was afterall.

llvm-svn: 98579
 2010-03-15 20:39:00 +00:00
Chris Lattner
802ebf9561 Fix the case when a reference to an address taken BB is emitted in one 
function, then the BB is RAUW'd before the definition is emitted.  There
are still two cases not being handled, but this should improve us back to
the situation before I touched anything.

llvm-svn: 98566
 2010-03-15 19:09:43 +00:00
Chris Lattner
2bdb0765f8 fix AsmPrinter::GetBlockAddressSymbol to always return a unique 
label instead of trying to form one based on the BB name (which
causes collisions if the name is empty).  This fixes PR6608

llvm-svn: 98495
 2010-03-14 17:53:23 +00:00
Chris Lattner
9331acc6d7 get MMI out of the label uniquing business, just go to MCContext 
to get unique assembler temporary labels.

llvm-svn: 98489
 2010-03-14 08:36:50 +00:00
Chris Lattner
5fef80c5aa change the LabelSDNode to be EHLabelSDNode and make it hold 
an MCSymbol.  Make the EH_LABEL MachineInstr hold its label
with an MCSymbol instead of ID.  Fix a bug in MMI.cpp which
would return labels named "Label4" instead of "label4".

llvm-svn: 98463
 2010-03-14 02:33:54 +00:00
Chris Lattner
de49dbc188 eliminate InvalidateLabel and LabelIDList from MMI and replace 
them with a counter.

llvm-svn: 98462
 2010-03-14 02:24:55 +00:00
Chris Lattner
149cf816bb change EH related stuff (other than EH_LABEL) to use MCSymbol 
instead of label ID's.  This cleans up and regularizes a bunch 
of code and makes way for future progress.

Unfortunately, this pointed out to me that JITDwarfEmitter.cpp
is largely copy and paste from DwarfException/MachineModuleInfo
and other places.  This is very sad and disturbing. :(

One major change here is that TidyLandingPads moved from being
called in DwarfException::BeginFunction to being called in
DwarfException::EndFunction.  There should not be any 
functionality change from doing this, but I'm not an EH expert.

llvm-svn: 98459
 2010-03-14 01:41:15 +00:00
Chris Lattner
e7538fa303 rearrange MCContext ownership. Before LLVMTargetMachine created it 
and passing off ownership to AsmPrinter.  Now MachineModuleInfo
creates it and owns it by value.  This allows us to use MCSymbols
more consistently throughout the rest of the code generator, and
simplifies a bit of code.  This also allows MachineFunction to 
keep an MCContext reference handy, and cleans up the TargetRegistry
interfaces for AsmPrinters.

llvm-svn: 98450
 2010-03-13 20:55:24 +00:00
Chris Lattner
d4ce7a73e8 strength reduce MMI::MappedLabel to MMI::isLabelDeleted, 
and add a FIXME about how we are eventually going to zap this
lookup table once mc world domination is complete.

llvm-svn: 98031
 2010-03-09 01:51:43 +00:00
Bob Wilson
61a15581e7 Fix an uninitialized value. Radar 7609421. 
llvm-svn: 95488
 2010-02-06 05:55:20 +00:00
Jim Grosbach
7474937004 Update of 94055 to track the IR level call site information via an intrinsic. 
This allows code gen and the exception table writer to cooperate to make sure
landing pads are associated with the correct invoke locations.

llvm-svn: 94726
 2010-01-28 01:45:32 +00:00
Jim Grosbach
57ca094a52 back this out for now. Growing Function is not good. 
llvm-svn: 94097
 2010-01-21 20:10:22 +00:00
Jim Grosbach
cf6e6e1c79 Make sure that landing pad entries in the EH call site table are in the proper 
order for SjLj style exception handling.

llvm-svn: 94055
 2010-01-21 00:43:30 +00:00
Devang Patel
9cd7c1ab8e Remove DebugLabelFolder pass. It is not used by dwarf writer anymore. 
llvm-svn: 89790
 2009-11-24 19:37:07 +00:00
Devang Patel
c024e96ca3 "Attach debug info with llvm instructions" mode was enabled a month ago. Now make it permanent and remove old way of inserting intrinsics to encode debug info for line number and scopes. 
llvm-svn: 87014
 2009-11-12 19:02:56 +00:00
Devang Patel
dcfcba3a71 Clear variable debug info map at the end of the function. 
llvm-svn: 83571
 2009-10-08 20:41:17 +00:00
Devang Patel
0136a7ebec Simplify. 
llvm-svn: 83123
 2009-09-30 00:14:40 +00:00
Chris Lattner
d6143d7aff the pointer MMI keeps will start out with object-file format specific stuff 
llvm-svn: 82012
 2009-09-16 05:26:00 +00:00
Chris Lattner
8457d8c557 add hooks to hang target-specific goop off MachineModuleInfo, 
move MachineFunctionInfo virtual method out of line to give it
a home.

llvm-svn: 81940
 2009-09-15 22:44:26 +00:00
Eric Christopher
94ba344cd4 Rework getPersonalityIndex slightly - 0 is now a valid and not-NULL 
personality function.

llvm-svn: 80153
 2009-08-26 21:44:57 +00:00
Eric Christopher
8a04a49040 If we're emitting additional CIEs due to personality functions 
don't emit the default one. Explicitly check for the NULL
CIE later.

llvm-svn: 80146
 2009-08-26 21:30:49 +00:00
Eric Christopher
c40e3426ca Nuke trailing whitespace. 
llvm-svn: 80145
 2009-08-26 21:27:09 +00:00
Chris Lattner
e22a1d941e remove some uses of llvm/Support/Streams.h 
llvm-svn: 79842
 2009-08-23 08:43:55 +00:00
Dan Gohman
4529d71681 Use setPreservesAll and setPreservesCFG in CodeGen passes. 
llvm-svn: 77754
 2009-07-31 23:37:33 +00:00
Chris Lattner
eac40b1473 implement a new magic global "llvm.compiler.used" which is like llvm.used, but 
doesn't cause ".no_dead_strip" to be emitted on darwin.

llvm-svn: 76399
 2009-07-20 06:14:25 +00:00
Chris Lattner
cbd8366755 use stripPointerCasts to simplify some code. 
llvm-svn: 76397
 2009-07-20 06:05:50 +00:00
Torok Edwin
f955a6ef49 llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable. 
This adds location info for all llvm_unreachable calls (which is a macro now) in
!NDEBUG builds.
In NDEBUG builds location info and the message is off (it only prints
"UREACHABLE executed").

llvm-svn: 75640
 2009-07-14 16:55:14 +00:00
Torok Edwin
ae8a3ff177 assert(0) -> LLVM_UNREACHABLE. 
Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.

llvm-svn: 75379
 2009-07-11 20:10:48 +00:00
Devang Patel
92ff43635b DebugLabelFolder ruthlessly deletes redundant labels. However, sometimes the redundant labels is referenced by debug info somewhere else. This patch provies a way so that dwarf writer can mark labels as used. 
llvm-svn: 68813
 2009-04-10 18:58:59 +00:00
Devang Patel
8c076d8328 Remove dead code. 
llvm-svn: 63653
 2009-02-03 19:46:28 +00:00
Duncan Sands
aee16d4916 Rename getAnalysisToUpdate to getAnalysisIfAvailable. 
llvm-svn: 63198
 2009-01-28 13:14:17 +00:00
Devang Patel
1da8253b35 Removoe MachineModuleInfo methods (and related DebugInfoDesc class hierarchy) that were used to handle debug info. 
llvm-svn: 62199
 2009-01-13 23:54:55 +00:00
Devang Patel
ba388f3905 Keep "has debug info" big in MachineModuleInfo to avoid circular dependency between AsmPrinter and CodeGen. 
llvm-svn: 62191
 2009-01-13 23:02:17 +00:00
Evan Cheng
9419dfe08a Fix a couple of Dwarf bugs. 
- Emit DW_AT_byte_size for struct and union of size zero.
- Emit DW_AT_declaration for forward type declaration.

llvm-svn: 60812
 2008-12-10 00:15:44 +00:00
Chris Lattner
2fefd3dd69 Fix an over aggressive assumption that struct decls will have a pointer to 
an array that is empty.  Instead of requiring this array, allow a null pointer.
This shrinks all forward references of structs.

llvm-svn: 58959
 2008-11-10 03:48:55 +00:00
Dan Gohman
46dafc2fb9 Move the include of MachineLocation.h into MachineModuleInfo.h 
because it declares a std::vector<MachineMove>, and strict
concept checking requires the definition of MachineMove to be
available.

llvm-svn: 57617
 2008-10-16 00:20:14 +00:00
Evan Cheng
1ded8b6ad6 Instead of setPreservesAll, just mark them preseving machine loop info and machine dominators. 
llvm-svn: 56475
 2008-09-22 22:21:38 +00:00
Evan Cheng
3bcf0cdd72 Mark several codegen passes as preserving all analysis. 
llvm-svn: 56469
 2008-09-22 20:58:04 +00:00
Dan Gohman
e1f9be27bc Tidy up several unbeseeming casts from pointer to intptr_t. 
llvm-svn: 55779
 2008-09-04 17:05:41 +00:00
Bill Wendling
3119083ee6 Make the DICountVisitor not a visitor. This keeps us from calling virtual 
functions and junk.

llvm-svn: 53279
 2008-07-09 06:02:33 +00:00
Bill Wendling
b30a16ca2c Use the canonical way to get an empty structure. 
llvm-svn: 53206
 2008-07-07 21:41:57 +00:00
Bill Wendling
d7da49634d Use StringMap for greater justice! 
llvm-svn: 53202
 2008-07-07 20:59:31 +00:00
Bill Wendling
e3ad6f2249 Don't return std::vector by value, but pass it in by reference to be filled. 
llvm-svn: 53123
 2008-07-03 23:13:02 +00:00
Bill Wendling
2c9a84d788 Revert my previous check-in that split up MachineModuleInfo. It turns out to 
slow the compiler down at -O0 some 30% or more. Ooops.

llvm-svn: 53120
 2008-07-03 22:53:42 +00:00
Bill Wendling
83caf5a9d5 Use the canonical form for getting an empty structure. 
llvm-svn: 53003
 2008-07-02 00:50:02 +00:00
Bill Wendling
aa45e38a17 Sorry. I couldn't sleep at night knowing I put these ugly casts into the source tree. 
llvm-svn: 53001
 2008-07-02 00:35:47 +00:00
Bill Wendling
c695823456 - Update comments. 
- Don't use GlobalVariable::LinkageTypes when unsigned works.

llvm-svn: 52987
 2008-07-01 22:08:01 +00:00
Evan Cheng
2005804de6 - Re-apply 52748 and friends with fix. GetConstantStringInfo() returns an empty string for ConstantAggregateZero case which surprises selectiondag. 
- Correctly handle memcpy from constant string which is zero-initialized.

llvm-svn: 52891
 2008-06-30 07:31:25 +00:00