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773 Commits

Author SHA1 Message Date
Eric Christopher
e0fc702988 Fix up comment. 
llvm-svn: 143919
 2011-11-07 09:18:35 +00:00
Rafael Espindola
a022f4813e Emit declarations before definitions if they are available. This causes DW_AT_specification to 
point back in the file in the included testcase. Fixes PR11300.

llvm-svn: 143726
 2011-11-04 19:00:29 +00:00
Nick Lewycky
691d7f80c2 Don't emit a directory entry for the value in DW_AT_comp_dir, that is always 
implied by directory index zero.

llvm-svn: 143570
 2011-11-02 20:55:33 +00:00
Nick Lewycky
651475977d Teach our Dwarf emission to use the string pool. 
llvm-svn: 143097
 2011-10-27 06:44:11 +00:00
Nick Lewycky
4aa5a52a80 Reflow lines, fix comments for doxygen style, fix whitespace. No functionality 
change.

llvm-svn: 143074
 2011-10-26 22:55:33 +00:00
Nick Lewycky
d8f16be86a Minor style cleanup, no functionality change. 
llvm-svn: 142307
 2011-10-17 23:27:36 +00:00
Nick Lewycky
c551c1c5f9 Add support for a new extension to the .file directive: 
.file filenumber "directory" "filename"

This removes one join+split of the directory+filename in MC internals. Because
bitcode files have independent fields for directory and filenames in debug info,
this patch may change the .o files written by existing .bc files.

llvm-svn: 142300
 2011-10-17 23:05:28 +00:00
Eric Christopher
57c57a3260 Add a new wrapper node for a DILexicalBlock that encapsulates it and a 
file. Since it should only be used when necessary propagate it through
the backend code generation and tweak testcases accordingly.

This helps with code like in clang's test/CodeGen/debug-info-line.c where
we have multiple #line directives within a single lexical block and want
to generate only a single block that contains each file change.

Part of rdar://10246360

llvm-svn: 141729
 2011-10-11 22:59:11 +00:00
Eric Christopher
d34e1d8bb6 Typo. 
llvm-svn: 141004
 2011-10-03 15:49:16 +00:00
Devang Patel
e4127d626e Do not use named md nodes to track variables that are completely optimized. This does not scale while doing LTO with debug info. New approach is to include list of variables in the subprogram info directly. 
llvm-svn: 138145
 2011-08-19 23:28:12 +00:00
Devang Patel
68d2232bfe Eliminate unnecessary forwarding function. 
llvm-svn: 138006
 2011-08-18 23:17:55 +00:00
Devang Patel
630d8ce36b Until now all debug info MDNodes referred to a root MDNode, a compile unit. This simplified handling of these needs in dwarf writer. However, one side effect of this is that during link time optimization all these MDNodes are _not_ uniqued. In other words there will be N number of MDNodes describing "int", "char" and all other types, which would suddenly grow when each object file starts using libraries like STL. 
MDNodes graph structure such that compiler unit keeps track of important MDNodes and update dwarf writer to process mdnodes top-down instead of bottom up.

llvm-svn: 137778
 2011-08-16 22:09:43 +00:00
Devang Patel
28ad105008 Remove unnecessary version check. 
llvm-svn: 137728
 2011-08-16 17:41:41 +00:00
Devang Patel
00c82827ab Refactor. 
llvm-svn: 137689
 2011-08-15 23:47:24 +00:00
Devang Patel
822410da56 Continue to hoist uses of getCompileUnit() up. The goal is to get rid of uses of getCompileUnit(). 
llvm-svn: 137683
 2011-08-15 23:36:40 +00:00
Devang Patel
e0aa92d509 This is somewhat déjà-vu, but avoid using getCompileUnit() as much as possible. 
llvm-svn: 137668
 2011-08-15 22:24:32 +00:00
Devang Patel
8fe83ecaf3 Refactor. Variables are part of compile unit so let CompileUnit create new variable. 
llvm-svn: 137663
 2011-08-15 22:04:40 +00:00
Devang Patel
f5e3a86ea0 There is no need to maintain a set to keep track of variables that use location expressions. In such cases, AT_location attribute's value will be a label. 
llvm-svn: 137659
 2011-08-15 21:43:21 +00:00
Devang Patel
9ea2ce9b7b Fix warning. 
llvm-svn: 137658
 2011-08-15 21:35:16 +00:00
Devang Patel
1113107823 Simplify. Let DbgVariable keep track of variable's DBG_VALUE machine instruction. 
llvm-svn: 137656
 2011-08-15 21:24:36 +00:00
Devang Patel
7e0fc7cf86 Simplify mapping to variable from its abstract variable info. 
When a variable is inlined multiple places, abstract variable keeps name, location, type etc.. info and all other concreate instances of the variable directly refers to abstract variable.

llvm-svn: 137637
 2011-08-15 19:01:20 +00:00
Devang Patel
2b6f546226 Refactor. 
llvm-svn: 137632
 2011-08-15 18:40:16 +00:00
Devang Patel
84b2564244 Refactor. 
llvm-svn: 137631
 2011-08-15 18:35:42 +00:00
Devang Patel
1b73744344 Refactor. Global variables are part of compile unit so let CompileUnit create new global variable. 
llvm-svn: 137621
 2011-08-15 17:57:41 +00:00
Devang Patel
ec9a83977b Refactor. A subprogram is part of compile unit so let CompileUnit construct new subprogram. 
llvm-svn: 137618
 2011-08-15 17:24:54 +00:00
Devang Patel
5901733259 Use ArrayRef. 
llvm-svn: 137485
 2011-08-12 18:10:19 +00:00
Benjamin Kramer
de2c60be28 Plug a memory leak. 
llvm-svn: 137321
 2011-08-11 18:39:28 +00:00
Devang Patel
504551c7bf Stay within 80 columns. 
llvm-svn: 137283
 2011-08-10 23:58:09 +00:00
Devang Patel
1541972a13 Distinguish between two copies of one inlined variable. Take 2. 
llvm-svn: 137253
 2011-08-10 21:50:54 +00:00
Devang Patel
5a1dd582e2 Revert unintentional parts of previous check-in. 
llvm-svn: 137249
 2011-08-10 21:16:49 +00:00
Devang Patel
de73daa98c Start using LexicalScopes utility. No intetional functionality change. 
llvm-svn: 137246
 2011-08-10 20:55:27 +00:00
Devang Patel
bc9a3e12d9 Simplify by creating parent first. 
llvm-svn: 137056
 2011-08-08 18:22:10 +00:00
Chandler Carruth
e833bbd11e Temporarily revert r135528 which distinguishes between two copies of one 
inlined variable, based on the discussion in PR10542.

This explodes the runtime of several passes down the pipeline due to
a large number of "copies" remaining live across a large function. This
only shows up with both debug and opt, but when it does it creates
a many-minute compile when self-hosting LLVM+Clang. There are several
other cases that show these types of regressions.

All of this is tracked in PR10542, and progress is being made on fixing
the issue. Once its addressed, the re-instated, but until then this
restores the performance for self-hosting and other opt+debug builds.

Devang, let me know if this causes any trouble, or impedes fixing it in
any way, and thanks for working on this!

llvm-svn: 136953
 2011-08-05 00:51:31 +00:00
Bob Wilson
03c734d202 Some revisions to Devang's change r136759 for merged global debug info. 
llvm-svn: 136802
 2011-08-03 19:42:51 +00:00
Devang Patel
99a2f0d98c Use byte offset, instead of element number, to access merged global. 
llvm-svn: 136759
 2011-08-03 01:25:46 +00:00
Nick Lewycky
cec151e7b6 Fix a lot of typos, improve (but not necessarily fix) grammaros and reflow some 
lines. No functionality change.

llvm-svn: 136458
 2011-07-29 03:49:23 +00:00
Devang Patel
a31c9d991e Remove outdated FIXME comment. 
llvm-svn: 136275
 2011-07-27 22:00:01 +00:00
Devang Patel
e85a416d4e It is quiet possible that inlined function body is split into multiple chunks of consequtive instructions. But, there is not any way to describe this in .debug_inline accelerator table used by gdb. However, describe non contiguous ranges of inlined function body appropriately using AT_range of DW_TAG_inlined_subroutine debug info entry. 
llvm-svn: 136196
 2011-07-27 00:34:13 +00:00
Devang Patel
5589e89f0c While extracting lexical scopes from machine instruction stream, work on one machine basic block at a time. 
llvm-svn: 136106
 2011-07-26 18:09:53 +00:00
Devang Patel
bf27de8340 Refactor. 
llvm-svn: 135633
 2011-07-20 23:00:27 +00:00
Devang Patel
284b502be9 There are two ways to map a variable to its lexical scope. Lexical scope information is embedded in MDNode describing the variable. It is also available as a part of DebugLoc attached with DBG_VALUE instruction. DebugLoc attached with an instruction is less reliable in optimized code so use information embedded in the MDNode. 
llvm-svn: 135629
 2011-07-20 22:18:50 +00:00
Devang Patel
65afdd27d0 Distinguish between two copies of one inlined variable. 
llvm-svn: 135528
 2011-07-19 22:31:15 +00:00
Devang Patel
647ad13add Use DebugLoc directly to map inlined functions' instructions to respective lexical scope. 
llvm-svn: 135302
 2011-07-15 21:25:44 +00:00
Devang Patel
d539f30c73 Eliminate redundant map. 
llvm-svn: 135278
 2011-07-15 16:38:42 +00:00
Evan Cheng
b43f66dcd3 Reverting r135232. It's causing infinite looping in DbgScope::openInsnRange. 
llvm-svn: 135254
 2011-07-15 06:26:35 +00:00
Devang Patel
7c5092d1c2 Do not get confused by multiple empty lexical scopes inlined at one location. 
llvm-svn: 135232
 2011-07-15 00:30:39 +00:00
Devang Patel
44a684072d Refactor. 
llvm-svn: 135212
 2011-07-14 23:17:49 +00:00
Devang Patel
ccc8ba373c Eliminate redundant LLVMContext argument. 
Improve DbgScope->dump() output.

llvm-svn: 135207
 2011-07-14 22:30:56 +00:00
Devang Patel
39f6e21de3 Simplify. 
llvm-svn: 135127
 2011-07-14 01:52:45 +00:00
Devang Patel
1856a523ea Simplify and delay extracting DebugLoc elements, scope and InlinedAt, as much as possible. 
llvm-svn: 135124
 2011-07-14 01:14:57 +00:00
Devang Patel
cb54f643e9 Simplify. Compile unit check inside hasValidLocation() did not add any value. 
llvm-svn: 135118
 2011-07-14 00:20:24 +00:00
Devang Patel
8d1207dc18 Fix typo in DEBUG message. 
llvm-svn: 135111
 2011-07-14 00:04:53 +00:00
Devang Patel
b9fe59ad12 Add DEBUG messages. 
llvm-svn: 135110
 2011-07-14 00:03:58 +00:00
Devang Patel
31505d2d78 Refactor. 
llvm-svn: 134703
 2011-07-08 17:09:57 +00:00
Devang Patel
756482ca98 Make provision to have floating point constants in .debug_loc expressions. 
llvm-svn: 134702
 2011-07-08 16:49:43 +00:00
Devang Patel
f97af90b4a Add DEBUG message. 
llvm-svn: 134643
 2011-07-07 21:44:42 +00:00
Devang Patel
a30ca05040 Add DEBUG messages. 
llvm-svn: 134572
 2011-07-07 00:14:27 +00:00
Devang Patel
94f4eec7e4 Remove dead code. 
llvm-svn: 134561
 2011-07-06 23:26:18 +00:00
Devang Patel
91fee59b74 Handle debug info for i128 constants. 
llvm-svn: 133821
 2011-06-24 20:46:11 +00:00
Benjamin Kramer
3bd28deb10 Use path API for path concatenation. 
llvm-svn: 132668
 2011-06-05 14:36:47 +00:00
Devang Patel
03708bbb55 A DBG_VALUE that truncates a range does not start another dbg value range. 
llvm-svn: 132433
 2011-06-01 23:00:17 +00:00
Devang Patel
1a3058d727 Do not drop constant values when a variable's content is described using .debug_loc entries. 
llvm-svn: 132427
 2011-06-01 22:03:25 +00:00
Devang Patel
a9f6a46390 Include global types, that are referenced through local variables, in debug_pubtypes list. 
llvm-svn: 132371
 2011-05-31 22:56:51 +00:00
Rafael Espindola
2230168a0f Make size computation less brittle. 
llvm-svn: 132222
 2011-05-27 22:05:41 +00:00
Devang Patel
62a7038a9f Select DW_AT_const_value size based on variable size. 
llvm-svn: 132193
 2011-05-27 16:45:18 +00:00
Devang Patel
5bce258c3d Fix debug info for blocks' variable. 
llvm-svn: 131940
 2011-05-24 00:22:25 +00:00
Devang Patel
8a90970a54 Remove unnecessary comment. 
llvm-svn: 131936
 2011-05-23 23:16:14 +00:00
Devang Patel
344808fbe5 Identify end of prologue (and beginning of function body) using DW_LNS_set_prologue_end line table opcode. 
llvm-svn: 131194
 2011-05-11 19:22:19 +00:00
Rafael Espindola
9b3e6a9cb4 Rename DwarfRequiresRelocationForStmtList to 
DwarfRequiresRelocationForSectionOffset as this is not specific to StmtList.

llvm-svn: 131148
 2011-05-10 20:35:05 +00:00
Devang Patel
38193e7550 Do not ignore InlinedAt while walking up scope chain to find subprogram node. 
llvm-svn: 131106
 2011-05-09 22:14:49 +00:00
Devang Patel
188fd17fe4 Move CompileUnit::getOrCreateNameSpace() and CompileUnit::addPubType() from DwarfDebug.cpp to DwarfCompileUnit.cpp 
llvm-svn: 130991
 2011-05-06 16:57:54 +00:00
Rafael Espindola
59462d8ae3 Dead code elimination. 
llvm-svn: 130984
 2011-05-06 14:56:22 +00:00
Devang Patel
99147805e4 Remove little used statistical counter. 
llvm-svn: 130955
 2011-05-05 22:00:08 +00:00
Devang Patel
3d0c5dc9fd If debug info for inlined function is missing then handle it gracefully. 
llvm-svn: 130933
 2011-05-05 17:54:26 +00:00
Rafael Espindola
8346c59e6a Producing a DW_FORM_addr for DW_AT_stmt_list is probably correct, but 
it is both inefficient and unexpected by dwarfdump. Change to
a DW_FORM_data4.

While in here, change the predicate name to reflect that the position
is not really absolute (it is an offset), just that the linker needs a
relocation.

llvm-svn: 130846
 2011-05-04 17:44:06 +00:00
Devang Patel
a6e69a5541 Tighten up check for empty (i.e. no meaningful debug info) module. This fixes dwarf-die2.c test case from gcc test suite. 
llvm-svn: 130842
 2011-05-04 16:34:02 +00:00
Devang Patel
3506ad5c7f Even if the subprogram is going to use AT_specification, emit DW_AT_MIPS_linkage_name. This helps gdb and fixes var-path-expr.exp regression reported by gdb testsuite. 
llvm-svn: 130794
 2011-05-03 21:50:34 +00:00
Devang Patel
2d8861a690 If the front end has emitted llvm.dbg.cu and other debug info anchors (clang does it now) then use them directly. This saves one scan of entire module, to collect debug info, which in turns saves few machine cycles at compile time. 
llvm-svn: 130759
 2011-05-03 16:45:22 +00:00
Devang Patel
7d7ac5512a Emit debug info for global variables first. 
This works around a limitation in gdb which is reported by following inherit.exp test failures from gdb testsuite.

gdb.cp/inherit.exp: print g_vB.vB::vb
gdb.cp/inherit.exp: print g_vB.vB::vx
gdb.cp/inherit.exp: print g_vC.vC::vc
gdb.cp/inherit.exp: print g_vC.vC::vx
gdb.cp/inherit.exp: print g_vD.vB::vb
...

llvm-svn: 130702
 2011-05-02 18:19:17 +00:00
Devang Patel
900ceb725b Teach dwarf writer to handle complex address expression for .debug_loc entries. 
This fixes clang generated blocks' variables' debug info.
Radar 9279956.

llvm-svn: 130373
 2011-04-28 02:22:40 +00:00
Devang Patel
42736cb058 Simplify handling of variables with complex address (i.e. blocks variables) 
llvm-svn: 130339
 2011-04-27 22:45:24 +00:00
Devang Patel
3da97b7d34 Rename a local variable. 
llvm-svn: 130171
 2011-04-25 23:05:21 +00:00
Devang Patel
e28211b031 Rename a method to match what it really does. 
s/addVariableAddress/addFrameVariableAddress/g

llvm-svn: 130170
 2011-04-25 23:02:17 +00:00
Devang Patel
b1b33d6569 Do not drop a variable's complex address if it is not based on frame base. 
Observed this while reading code, so I do not have a test case handy here.

llvm-svn: 130167
 2011-04-25 22:52:55 +00:00
Devang Patel
929bbb6bf9 Let front-end tie subprogram declaration with subprogram definition directly. 
llvm-svn: 130028
 2011-04-22 23:10:17 +00:00
Devang Patel
6aac901f77 Do not leak argument's DbgVariables. 
llvm-svn: 130004
 2011-04-22 18:09:57 +00:00
Devang Patel
4f25432e4e Refactor. 
llvm-svn: 129938
 2011-04-21 21:07:35 +00:00
Devang Patel
a31b73427e Add comment in output stream. 
llvm-svn: 129921
 2011-04-21 17:50:24 +00:00
Devang Patel
7220c1a021 Reduce clutter in asm output. Do not emit source location as comment for each instruction. 
llvm-svn: 129715
 2011-04-18 20:26:49 +00:00
Chris Lattner
0304b82f80 Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!

llvm-svn: 129558
 2011-04-15 05:18:47 +00:00
Devang Patel
43cbfe2ba7 Remove extra bytes that were added for gdb. We do not have good poiner to understand actual reason behind this fixme. Spot checking suggest that newer gdb does not need this. 
llvm-svn: 129461
 2011-04-13 19:41:17 +00:00
Devang Patel
5f8111e1ca Simplify. There is no need to use static variable. 
llvm-svn: 129406
 2011-04-12 23:10:47 +00:00
Devang Patel
f288e23b3f This mechanical patch moves type handling into CompileUnit from DwarfDebug. In case of multiple compile unit in one object file, each compile unit is responsible for its own set of type entries anyway. This refactoring makes this obvious. 
llvm-svn: 129402
 2011-04-12 22:53:02 +00:00
Devang Patel
6c1785d527 Refactor CompileUnit into a separate header. 
llvm-svn: 129367
 2011-04-12 17:40:32 +00:00
Devang Patel
21b6ef4320 Simplify array bound checks and clarify comments. One element array can have same non-zero number as lower bound as well as upper bound. 
llvm-svn: 129170
 2011-04-08 23:39:38 +00:00
Devang Patel
39ac307002 Do not emit DW_AT_upper_bound and DW_AT_lower_bound for unbouded array. 
If lower bound is more then upper bound then consider it is an unbounded array.
An array is unbounded if non-zero lower bound is same as upper bound.
If lower bound and upper bound are zero than array has one element.

llvm-svn: 129156
 2011-04-08 21:55:10 +00:00
Devang Patel
03d0891c10 Add support to encode function's template parameters. 
llvm-svn: 128947
 2011-04-05 22:52:06 +00:00
Devang Patel
af7f5f4ada Refactor. 
llvm-svn: 128929
 2011-04-05 21:08:24 +00:00
Devang Patel
2be08abc94 Do not emit empty name. 
llvm-svn: 128914
 2011-04-05 20:14:13 +00:00
Jakob Stoklund Olesen
446412de55 Collect and coalesce DBG_VALUE instructions before emitting the function. 
Correctly terminate the range of register DBG_VALUEs when the register is
clobbered or when the basic block ends.

The code is now ready to deal with variables that are sometimes in a register
and sometimes on the stack. We just need to teach emitDebugLoc to say 'stack
slot'.

llvm-svn: 128327
 2011-03-26 02:19:36 +00:00
Jakob Stoklund Olesen
ab0501221b Emit less labels for debug info and stop emitting .loc directives for DBG_VALUEs. 
The .dot directives don't need labels, that is a leftover from when we created
line number info manually.

Instructions following a DBG_VALUE can share its label since the DBG_VALUE
doesn't produce any code.

llvm-svn: 128284
 2011-03-25 17:20:59 +00:00
Devang Patel
4909f41ec5 Keep track of directory namd and fIx regression caused by Rafael's patch r119613. 
A better approach would be to move source id handling inside MC.

llvm-svn: 128233
 2011-03-24 20:30:50 +00:00
Jakob Stoklund Olesen
c62f168ec5 Don't coalesce identical DBG_VALUE instructions prematurely. 
Each of these instructions may have a RegsClobberInsn entry that can't be
ignored. Consecutive ranges are coalesced later when DwarfDebug::emitDebugLoc
merges entries.

llvm-svn: 128155
 2011-03-23 18:37:30 +00:00
Jakob Stoklund Olesen
28ebc380f6 Reapply r128045 and r128051 with fixes. 
This will extend the ranges of debug info variables in registers until they are
clobbered.

Fix 1: Don't mistake DBG_VALUE instructions referring to incoming arguments on
the stack with DBG_VALUE instructions referring to variables in the frame
pointer. This fixes the gdb test-suite failure.

Fix 2: Don't trace through copies to physical registers setting up call
arguments. These registers are call clobbered, and the source register is more
likely to be a callee-saved register that can be extended through the call
instruction.

llvm-svn: 128114
 2011-03-22 22:33:08 +00:00
Andrew Trick
63dc418ea3 Revert r128045 and r128051, debug info enhancements. 
Temporarily reverting these to see if we can get llvm-objdump to link. Hopefully this is not the problem.

llvm-svn: 128097
 2011-03-22 19:18:42 +00:00
Jakob Stoklund Olesen
ac3cdb2811 Clear map after use. 
This is likely to fix the segfault in llvm-gcc-x86_64-darwin10-cross-mingw32.

llvm-svn: 128051
 2011-03-22 01:03:24 +00:00
Jakob Stoklund Olesen
fc9e8a04c3 Dont emit 'DBG_VALUE %noreg, ...' to terminate user variable ranges. 
These ranges get completely jumbled by the post-ra scheduler, and it is not
really reasonable to expect it to make sense of them.

Instead, teach DwarfDebug to notice when user variables in registers are
clobbered, and terminate the ranges there.

llvm-svn: 128045
 2011-03-22 00:21:41 +00:00
Daniel Dunbar
8757b8c000 Revert r127757, "Patch to a fix dwarf relocation problem on ARM. One-line fix 
plus the test where it used to break.", which broke Clang self-host of a
Debug+Asserts compiler, on OS X.

llvm-svn: 127763
 2011-03-16 22:16:39 +00:00
Renato Golin
bf788a5626 Patch to a fix dwarf relocation problem on ARM. One-line fix plus the test where it used to break. 
llvm-svn: 127757
 2011-03-16 21:05:52 +00:00
Devang Patel
a7b5a00033 Fix typo. 
llvm-svn: 126962
 2011-03-03 21:49:41 +00:00
Devang Patel
3c2bd93f9e Fix thinko in previous check-in. 
Add comment.

llvm-svn: 126959
 2011-03-03 20:08:10 +00:00
Devang Patel
4adbb350be llvm::Function argument count is not a good indicator of how many arugments does the function have at source level. If we need more space, just resize vector conservatively. This vector is only used once per function. 
llvm-svn: 126957
 2011-03-03 20:02:02 +00:00
Devang Patel
8233c58f5d If argument numbering is encoded in metadata then emit arguments' debug info in that order. 
llvm-svn: 126794
 2011-03-01 22:58:55 +00:00
Cameron Zwarich
974208a607 Roll out r126425 and r126450 to see if it fixes the failures on the buildbots. 
llvm-svn: 126488
 2011-02-25 16:30:32 +00:00
Devang Patel
f2b2417c2c Enable DebugInfo support for COFF object files. 
Patch by Nathan Jeffords!

llvm-svn: 126425
 2011-02-24 21:04:00 +00:00
Devang Patel
e0f113c206 Do not use DIFactory. 
llvm-svn: 126397
 2011-02-24 18:49:30 +00:00
Devang Patel
e8ade74a52 Use DW_FORM_data2 for DW_AT_language and let users use DW_LANG_lo_user=0x8000 to DW_LANG_hi_user=0xffff range. 
llvm-svn: 126339
 2011-02-23 22:37:04 +00:00
Devang Patel
d7aee67937 Do not emit empty DW_TAG_lexical_block DIEs. In one test case, size of debug info reduced by almost 7%. 
llvm-svn: 126009
 2011-02-19 01:31:27 +00:00
Devang Patel
d5b7c28519 Ignore DBG_VALUE machine instructions while constructing instruction ranges based on location info. 
Machine instruction range consisting of only DBG_VALUE MIs only contributes consecutive labels in assembly output, which is harmless, and empty scope entry in DebugInfo, which confuses debugger tools.

llvm-svn: 125577
 2011-02-15 17:56:09 +00:00
Devang Patel
930b4b16a1 Merge .debug_loc entries whenever possible to reduce debug_loc size. 
llvm-svn: 124904
 2011-02-04 22:57:18 +00:00
Devang Patel
71b1fadf20 Add support to describe template value parameter in debug info. 
llvm-svn: 124755
 2011-02-02 22:35:53 +00:00
Devang Patel
89455dc7cd Add support to describe template parameter type in debug info. 
llvm-svn: 124752
 2011-02-02 21:38:25 +00:00
Devang Patel
729c5e59af Fix debug info for merged global. 
llvm-svn: 123862
 2011-01-20 00:02:16 +00:00
Devang Patel
574e10fa1e Fix register address expression. Patch by Ken Dyck. 
llvm-svn: 123856
 2011-01-19 23:04:47 +00:00
Devang Patel
7b5cf4eafc Appropriately truncate debug info range in dwarf output. 
This is not yet completely enabled.

llvm-svn: 123274
 2011-01-11 21:42:10 +00:00
Anton Korobeynikov
cf5967630b Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there. 
llvm-svn: 123170
 2011-01-10 12:39:04 +00:00
Devang Patel
d3ba97949a Speculatively revert r123032. 
llvm-svn: 123039
 2011-01-07 22:33:41 +00:00
Devang Patel
a52d6c216d Appropriately truncate debug info range in dwarf output. 
Enable live debug variables pass.

llvm-svn: 123032
 2011-01-07 21:30:41 +00:00
Devang Patel
7cb0e7c2ef Emit 128 bit constant. 
This fixes PR 8913 crash.

llvm-svn: 122971
 2011-01-06 21:39:25 +00:00
Devang Patel
b3e0d80b1f DW_FORM_data1 may not provide sufficient room for vtable index, use _udata instead. 
This fixes radar 8730409.

llvm-svn: 121323
 2010-12-09 00:10:40 +00:00
Devang Patel
12459bc442 Undefined value in reg 0 may need a marker to identify end of source range. 
This will be used to truncate live range of DBG_VALUE instruction by register allocator and friends.

llvm-svn: 121061
 2010-12-06 22:48:22 +00:00
Michael J. Spencer
d5ec932c3a Merge System into Support. 
llvm-svn: 120298
 2010-11-29 18:16:10 +00:00
Anton Korobeynikov
ff8c52bd51 Move some more hooks to TargetFrameInfo 
llvm-svn: 119904
 2010-11-20 15:59:32 +00:00
Anton Korobeynikov
ce676f96e1 Move getInitialFrameState() to TargetFrameInfo 
llvm-svn: 119754
 2010-11-18 23:25:52 +00:00
Rafael Espindola
93a07b464e Change CodeGen to use .loc directives. This produces a lot more readable output 
and testing is easier.  A good example is the unknown-location.ll test that
now can just look for ".loc 1 0 0".  We also don't use a DW_LNE_set_address for
every address change anymore.

llvm-svn: 119613
 2010-11-18 02:04:25 +00:00
Devang Patel
3dd764feda Remove DW_AT_start_scope support. It is incomplete and superseeded by location entries support. 
llvm-svn: 118940
 2010-11-12 23:20:42 +00:00
Devang Patel
5520a6fc97 Take care of special characters while creating named MDNode name to hold function specific local variable's info. 
This fixes radar 8653152. I am checking in testcase as a separate check-in.

llvm-svn: 118726
 2010-11-10 22:19:21 +00:00
Devang Patel
37fa9bb66a Simplify. 
llvm-svn: 118027
 2010-11-02 17:37:00 +00:00
Devang Patel
bf9c3c8947 Ignore empty blocks. 
llvm-svn: 117615
 2010-10-28 22:11:59 +00:00
Devang Patel
a496603faf Do not work too hard to find type's file info. There is a special field to record file info. 
llvm-svn: 117588
 2010-10-28 19:50:08 +00:00
Devang Patel
0e43a2d84f Technically DIFile scope should also be handled here. 
llvm-svn: 117563
 2010-10-28 17:30:52 +00:00
Devang Patel
e544bb3842 s/beginScope/beginInstruction/g 
s/endScope/endInstruction/g

llvm-svn: 117376
 2010-10-26 17:49:02 +00:00
Nick Lewycky
f7dddd658f For statistics that are only used in functions declared in !NDEBUG, wrap the 
declarations in !NDEBUG to avoid -Wunused-variable warnings. Patch by
Matt Beaumont-Gay!

llvm-svn: 117345
 2010-10-26 00:51:57 +00:00
Devang Patel
24a6b791b6 Add simple counter to count no. of basic blocks without any line number information. At -O0, these basic block coule cause less than optimial debugging experience. 
llvm-svn: 117307
 2010-10-25 20:45:32 +00:00
Devang Patel
3090b0ebf1 Line number 0 indicates there is no source line/file name info available for this construct. 
llvm-svn: 116061
 2010-10-08 17:18:54 +00:00
Devang Patel
ee23e6ea23 Provie a clearner interface so that FE can decide whether a function has prototype or not. 
llvm-svn: 115988
 2010-10-07 22:03:01 +00:00
Devang Patel
eeb0b64560 Add support for DW_TAG_unspecified_parameters. 
llvm-svn: 115833
 2010-10-06 20:50:40 +00:00
Devang Patel
f612c0b23e Add support to let FE mark explict methods as explict in debug info. 
llvm-svn: 115378
 2010-10-01 23:31:40 +00:00
Devang Patel
41e2a94595 Let FE mark a variable as artificial variable. 
llvm-svn: 115102
 2010-09-29 23:07:21 +00:00
Devang Patel
f600d9f0ed Add support to let FE encode method access specifier. 
llvm-svn: 115089
 2010-09-29 21:44:16 +00:00
Devang Patel
fd6665e8aa Assign DW_ACCESS_public accessibility attribute to members by default. 
llvm-svn: 115067
 2010-09-29 19:08:08 +00:00
Devang Patel
e1f502ee26 Provide an interface to let FEs anchor debug info for types. 
llvm-svn: 114969
 2010-09-28 18:08:20 +00:00
Devang Patel
0a414c918a Remove dead argument. 
llvm-svn: 114920
 2010-09-27 23:15:27 +00:00
Devang Patel
8914755c40 Use DW_OP_fbreg when offset is based on frame register. 
llvm-svn: 114585
 2010-09-22 21:10:38 +00:00
Devang Patel
99777d1d07 If FE forgot to provide a file name (usually it uses "stdin" as name in such situation) then make one up to ensure that debug info is not malformed. 
llvm-svn: 114119
 2010-09-16 20:57:49 +00:00
Devang Patel
bbbd35d042 Fix .debug_range for linux. Patch by Krister Wombell. 
llvm-svn: 112830
 2010-09-02 16:43:44 +00:00
Devang Patel
9e8ee9242f Use absolute label for DW_AT_stmt_list if a target does not prefer offset here. 
This patch was developed on top of original patch by Artur Pietrek.

llvm-svn: 112678
 2010-08-31 23:50:19 +00:00
Devang Patel
46570e6783 Reapply r112623. Included additional check for unused byval argument. 
llvm-svn: 112659
 2010-08-31 22:22:42 +00:00
Devang Patel
b94251aea0 Revert r112623. It is causing self host build failures. 
llvm-svn: 112631
 2010-08-31 19:41:03 +00:00
Devang Patel
414cbc940a Remember byval argument's frame index during argument lowering and use this info to emit debug info. 
Fixes Radar 8367011.

llvm-svn: 112623
 2010-08-31 18:50:09 +00:00
Devang Patel
2eeab37306 Simplify. 
llvm-svn: 112583
 2010-08-31 06:11:28 +00:00
Devang Patel
9024c19242 Revert r107202. It is not adding any value. 
llvm-svn: 111870
 2010-08-24 00:06:12 +00:00
Devang Patel
cf6c6b4038 Handle qualified constants that are directly folded by FE. 
PR 7920.

llvm-svn: 111820
 2010-08-23 18:25:56 +00:00
Devang Patel
9b12559c4f Do not forget debug info for enums. Use named mdnode to keep track of these types. 
llvm-svn: 110712
 2010-08-10 20:01:20 +00:00
Devang Patel
84f48b5483 Handle TAG_constant for integers. 
llvm-svn: 110656
 2010-08-10 07:11:13 +00:00
Devang Patel
8edc7575a4 Simplify. 
llvm-svn: 110653
 2010-08-10 04:12:17 +00:00
Devang Patel
191ed4c41d Drop "const". It does not add value here. 
llvm-svn: 110652
 2010-08-10 04:09:06 +00:00
Devang Patel
ef61383343 Do not include file static variable in pubnames list. 
Refactor and simplify code to avoid redundant checks.

llvm-svn: 110642
 2010-08-10 01:37:23 +00:00
Devang Patel
c5f885e228 Undo accidental commit. 
llvm-svn: 110623
 2010-08-09 23:28:52 +00:00
Devang Patel
4ccbd73f20 Simplify. Avoid redundant checks. 
llvm-svn: 110621
 2010-08-09 23:26:06 +00:00
Devang Patel
8d0c79694e Refactor. 
llvm-svn: 110607
 2010-08-09 21:39:24 +00:00
Devang Patel
2d9b975304 Refactoring. Update DbgVarible to handle queries itself. 
llvm-svn: 110600
 2010-08-09 21:01:39 +00:00
Devang Patel
9110ec63bc It is ok, and convenient, to pass descriptors by value. 
llvm-svn: 110590
 2010-08-09 20:20:05 +00:00
Devang Patel
409f683e17 Rename a method. 
llvm-svn: 110586
 2010-08-09 18:51:29 +00:00
Devang Patel
4c36d66bde Use location entry only of the location described by DBG_VALUE is valid. 
llvm-svn: 110255
 2010-08-04 22:07:27 +00:00
Devang Patel
35e3dd45c0 Fix typo in comment. 
llvm-svn: 110244
 2010-08-04 20:32:36 +00:00
Devang Patel
eb7cff69c8 If a variable is spilled by code generator then use DW_OP_fbreg to describe its location on stack. 
llvm-svn: 110234
 2010-08-04 18:40:52 +00:00
Devang Patel
8a18e29b50 Free DbgScope created for dead functions. 
llvm-svn: 110045
 2010-08-02 17:32:15 +00:00
Devang Patel
38a7221118 It is FE's responsibility to emit proper directory name. 
llvm-svn: 109538
 2010-07-27 20:51:15 +00:00
Devang Patel
df9f5bf991 Use current working directory when Dirname is empty. This only happens when absolute source file path is used on compiler command line. 
llvm-svn: 109302
 2010-07-24 00:53:22 +00:00
Devang Patel
7049c83125 Revert r109262. 
llvm-svn: 109285
 2010-07-23 23:04:41 +00:00
Devang Patel
01d5937192 IF directory name is empty then try to extract one using absolute file name. 
llvm-svn: 109262
 2010-07-23 20:36:13 +00:00
Jim Grosbach
489d758ea8 For ARM/Darwin, add a dwarf entry indicating whether a function is arm or thumb 
rdar://8202967

llvm-svn: 109057
 2010-07-21 23:03:52 +00:00
Jim Grosbach
6b4f9f4c14 80 column and trailing whitespace cleanup 
llvm-svn: 109037
 2010-07-21 21:21:52 +00:00
Dan Gohman
fc3ee085a0 Disallow null as a named metadata operand. 
Make MDNode::destroy private.
Fix the one thing that used MDNode::destroy, outside of MDNode itself.

One should never delete or destroy an MDNode explicitly. MDNodes
implicitly go away when there are no references to them (implementation
details aside).

llvm-svn: 109028
 2010-07-21 18:54:18 +00:00
Stuart Hastings
587ed4918c Correct line info for declarations/definitions. Radar 8063111. 
llvm-svn: 108784
 2010-07-19 23:56:30 +00:00
Devang Patel
e401bfe168 Fix PR 7662. 
Do not try to insert local variable info to a DIE used for function declaration.

llvm-svn: 108731
 2010-07-19 17:53:55 +00:00
Stuart Hastings
a3999081cf Reverting r107918 and r107919. Radar 8063111. 
llvm-svn: 107930
 2010-07-08 23:25:39 +00:00
Devang Patel
2abdcdfb40 Relax assertion. In optimized code, it is possible that first instruction is coming from a inlined function. 
This fixes PR7596 .

llvm-svn: 107923
 2010-07-08 22:39:20 +00:00
Stuart Hastings
b70d4e06e3 Fix decl/def debug info for template functions. Radar 8063111. 
llvm-svn: 107919
 2010-07-08 22:28:59 +00:00
Devang Patel
69b391b5b1 Reuse DIEInteger for 1. This is frequently used while emitting an attribute using dwarf::DW_FORM_flag form. 
llvm-svn: 107903
 2010-07-08 20:10:35 +00:00
Devang Patel
3d7c71dbbb One MDNode may be used to create regular DIE as well as abstract DIE. 
Keep track of abstract subprogram DIEs. 

llvm-svn: 107822
 2010-07-07 22:20:57 +00:00
Devang Patel
3e07e4eb8b Rename couple of maps. 
llvm-svn: 107810
 2010-07-07 20:49:57 +00:00
Devang Patel
6aef3e8bb3 80 cols. 
llvm-svn: 107807
 2010-07-07 20:12:52 +00:00
Devang Patel
606a8f3fbf Do not require line number entry for undefined local variable. 
This is a regression caused by r106792 and caught by gdb testsuite.

llvm-svn: 107430
 2010-07-01 21:38:08 +00:00
Devang Patel
00ee7ba38c Do not construct DIE for already processed MDNode. 
llvm-svn: 107237
 2010-06-30 01:40:11 +00:00
Devang Patel
93e5e9bd19 Add variables into a scope before constructing scope DIE otherwise variables won't be included DIE tree. 
llvm-svn: 107228
 2010-06-30 00:11:08 +00:00
Devang Patel
8052c941ca Do not hardcode DW_AT_stmt_list value. 
Inspired by Artur Pietrek.

llvm-svn: 107202
 2010-06-29 20:17:53 +00:00
Devang Patel
2c43f47ccc Use DW_FORM_addr for DW_AT_entry_pc. 
llvm-svn: 107085
 2010-06-28 22:22:47 +00:00
Devang Patel
229053c609 Include inlined function in list of processed subprograms. 
llvm-svn: 107065
 2010-06-28 20:53:04 +00:00
Devang Patel
dffbf36af7 Preserve deleted function's local variables' debug info. 
Radar 8122864.

llvm-svn: 107027
 2010-06-28 18:25:03 +00:00
Devang Patel
1929457a0f Remove dead code. 
llvm-svn: 106990
 2010-06-28 05:59:13 +00:00
Devang Patel
b5b193fb87 Collect debug info for optimized variables of inlined functions. 
llvm-svn: 106895
 2010-06-25 22:07:34 +00:00
Devang Patel
af1d4eede5 DBG_VALUE machine instruction pointing to undefined register for a variable justify a separate scope if the variable is inlined function's argument. 
Radar 8122864.

llvm-svn: 106792
 2010-06-24 21:51:19 +00:00
Devang Patel
f50b6147ad Use single interface, using twine, to get named metadata. 
getNamedMetadata().

llvm-svn: 106518
 2010-06-22 01:19:38 +00:00
Devang Patel
38d9ee4e35 Discard special LLVM prefix from linkage name. 
llvm-svn: 106516
 2010-06-22 01:06:05 +00:00
Devang Patel
dee41b010a Do not rely on Twine temporaries to survive. 
llvm-svn: 106515
 2010-06-22 01:01:58 +00:00
Dan Gohman
6c6e9a45ff Give NamedRegionTimer an Enabled flag, allowing all its clients to 
switch from this:

  if (TimePassesIsEnabled) {
    NamedRegionTimer T(Name, GroupName);
    do_something();
  } else {
    do_something(); // duplicate the code, this time without a timer!
  }

to this:

  {
    NamedRegionTimer T(Name, GroupName, TimePassesIsEnabled);
    do_something();
  }

llvm-svn: 106285
 2010-06-18 15:56:31 +00:00
Devang Patel
3282324020 Use separate named MDNode to hold each function's local variable info. 
This speeds up local variable handling in DwarfDebug.

llvm-svn: 106075
 2010-06-16 00:53:55 +00:00
Stuart Hastings
5dd588e7d9 Added a comment. 
llvm-svn: 106063
 2010-06-15 23:06:30 +00:00
Stuart Hastings
f9ef9ff3d6 Support for nested functions/classes in debug output. (Again.) Radar 7424645. 
llvm-svn: 105828
 2010-06-11 20:08:44 +00:00
Stuart Hastings
37ed2a9663 Revert 105492 & 105493 due to a testcase regression. Radar 7424645. 
llvm-svn: 105511
 2010-06-05 00:39:29 +00:00
Stuart Hastings
eb78f8db98 Support for nested functions/classes in debug output. Radar 7424645. 
llvm-svn: 105492
 2010-06-04 22:36:03 +00:00
Devang Patel
5fb0590e9c Skip identical instruction while calculating DBG_VALUE range. 
llvm-svn: 105340
 2010-06-02 19:05:13 +00:00
Devang Patel
a5f4e6f4d9 Use local small vector. 
llvm-svn: 105332
 2010-06-02 16:42:51 +00:00
Devang Patel
345874624f Ignore line number of debug value in undefined register. 
llvm-svn: 105292
 2010-06-01 21:43:09 +00:00
Stuart Hastings
369d3391d8 Revert 104841, 104842, 104876 due to buildbot failures. Radar 7424645. 
llvm-svn: 104953
 2010-05-28 16:41:07 +00:00
Devang Patel
8d4eb26f24 Do not drop location info for inlined function args. 
llvm-svn: 104884
 2010-05-27 20:25:04 +00:00
Devang Patel
747f1a373b inlined function's arguments need a label to mark the start point because they are not directly attached to current function. 
llvm-svn: 104848
 2010-05-27 16:47:30 +00:00
Stuart Hastings
60d799e343 Support for nested functions/classes in debug output. Radar 7424645. 
llvm-svn: 104841
 2010-05-27 16:16:54 +00:00
Devang Patel
bdda547db4 Simplify. Eliminate unneeded debug_loc entry. 
llvm-svn: 104785
 2010-05-26 23:55:23 +00:00
Devang Patel
2bbe13a797 There is no need to force an line number entry (using previous location) for a temp label at unknown location. 
llvm-svn: 104740
 2010-05-26 21:23:46 +00:00
Devang Patel
c24a269116 Identify instructions, that needs a label to mark debug info entity, in advance. This simplifies beginScope(). 
llvm-svn: 104720
 2010-05-26 19:37:24 +00:00
Devang Patel
6f08a37562 Remove dead code. 
llvm-svn: 104706
 2010-05-26 17:42:50 +00:00
Devang Patel
691615151f Do not construct location list backword! 
llvm-svn: 104705
 2010-05-26 17:29:32 +00:00
Devang Patel
d7ad8ac4c0 First cut at supporting .debug_loc section. 
This is used to track variable information.

llvm-svn: 104649
 2010-05-25 23:40:22 +00:00
Devang Patel
345bc8667e Do not emit line number entries for unknown debug values. 
This fixes recent regression in store.exp from gdb testsuite.

llvm-svn: 104524
 2010-05-24 18:26:49 +00:00
Devang Patel
e611375617 Collect variable information during endFunction() instead of beginFunction(). 
llvm-svn: 104412
 2010-05-22 00:04:14 +00:00
Devang Patel
e8f686625e Simplify 
llvm-svn: 104338
 2010-05-21 18:49:09 +00:00
Devang Patel
765d605934 Simplify. 
llvm-svn: 104302
 2010-05-21 00:10:20 +00:00
Devang Patel
32a1ce3b3a Refactor. 
llvm-svn: 104265
 2010-05-20 19:57:06 +00:00
Devang Patel
f90f78669f Split DbgVariable. Eventually, variable info will be communicated through frame index, or DBG_VALUE instruction, or collection of DBG_VALUE instructions. Plus each DbgVariable may not need a label. 
llvm-svn: 104233
 2010-05-20 16:36:41 +00:00
Devang Patel
069568c287 Revert r104165. 
llvm-svn: 104172
 2010-05-19 21:58:28 +00:00
Devang Patel
d0b5830f72 There is no need to maintain InsnsBeginScopeSet separately. 
llvm-svn: 104165
 2010-05-19 21:26:53 +00:00
Devang Patel
e54dbcd4bf Do not forget to mark prcessed arguments. 
llvm-svn: 103822
 2010-05-14 21:55:50 +00:00
Devang Patel
2b99c27e47 Add support to preserve type info for the variables that are removed by the optimizer. 
llvm-svn: 103798
 2010-05-14 21:01:35 +00:00
Devang Patel
23f7323e7f Enable multiple Compile Units in one module. 
This means now 'llvm-ld a.bc b.bc' will preserve debug info appropriately.

llvm-svn: 103439
 2010-05-10 22:49:55 +00:00
Devang Patel
eed188e776 Instead of just verifying compile unit, verify entire type, variable, namespace etc.. 
llvm-svn: 103327
 2010-05-07 23:33:41 +00:00
Devang Patel
14f07a8625 Remove DIGlobal. 
llvm-svn: 103325
 2010-05-07 23:19:07 +00:00
Devang Patel
e7333c8318 Verify entire type descriptor not just tag. 
llvm-svn: 103303
 2010-05-07 21:45:47 +00:00
Devang Patel
0638b539bb Wrap const MDNode * inside DIDescriptor. 
llvm-svn: 103295
 2010-05-07 20:54:48 +00:00
Devang Patel
02bb578ffd Avoid DIDescriptor::getNode(). Use overloaded operators instead. 
llvm-svn: 103272
 2010-05-07 18:11:54 +00:00
Dan Gohman
f863ad3dc5 Disable the new unknown-location code for now. It causes a major 
increase in the debug line info section, and it's causing
regressions in a gdb testsuite.

llvm-svn: 103226
 2010-05-07 01:08:53 +00:00
Dan Gohman
365b0e0f0f Update LabelsBeforeInsn also, when creating unknown-position labels. 
llvm-svn: 103145
 2010-05-06 00:29:41 +00:00
Dan Gohman
2f1182c0ac Emit debug info for MachineInstrs with unknown debug locations, instead 
of just letting them inherit the debug locations of adjacent instructions.

Debug info should aim to be either accurate or absent.

llvm-svn: 103135
 2010-05-05 23:41:32 +00:00
Devang Patel
ee7c7143dc Set DW_AT_APPLE_omit_frame_ptr in endFunction() where MachineFunction is available all the time. 
llvm-svn: 103001
 2010-05-04 06:15:30 +00:00
Devang Patel
52c2d4d378 Attach AT_APPLE_optimized attribute to optimized function's debug info. 
llvm-svn: 102743
 2010-04-30 19:38:23 +00:00
Devang Patel
570e9d53a7 Emit debug info for byval parameters. 
llvm-svn: 102486
 2010-04-28 01:39:28 +00:00
Chris Lattner
d3cfa7f3eb remove some default arguments to EmitAlignment. 
llvm-svn: 102482
 2010-04-28 01:05:45 +00:00
Devang Patel
d848109a46 Refactor. 
llvm-svn: 102481
 2010-04-28 01:03:09 +00:00