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* Atomic load/store on ARM/Thumb.Eli Friedman2011-08-262-5/+27
| | | | | | | | | | | | | | I don't really like the patterns, but I'm having trouble coming up with a better way to handle them. I plan on making other targets use the same legalization ARM-without-memory-barriers is using... it's not especially efficient, but if anyone cares, it's not that hard to fix for a given target if there's some better lowering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138621 91177308-0d34-0410-b5e6-96231b3b80d8
* Look at only the terminators of the basic block. Also, if we're using the new EHBill Wendling2011-08-251-5/+9
| | | | | | | | scheme, return 'true' so that it doesn't try to run the old EH scheme's fixup on the new code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138605 91177308-0d34-0410-b5e6-96231b3b80d8
* Basic x86 code generation for atomic load and store instructions.Eli Friedman2011-08-244-12/+147
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138478 91177308-0d34-0410-b5e6-96231b3b80d8
* Move TargetRegistry and TargetSelect from Target to Support where they belong.Evan Cheng2011-08-242-2/+2
| | | | | | | These are strictly utilities for registering targets and components. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138450 91177308-0d34-0410-b5e6-96231b3b80d8
* Tidy up. Trailing whitespace.Jim Grosbach2011-08-241-31/+31
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138437 91177308-0d34-0410-b5e6-96231b3b80d8
* Add the sentinal "no handle" value to the ResumeInst.Bill Wendling2011-08-241-0/+2
| | | | | | | | | A value of -1 at a call site tells the personality function that this call isn't handled by the current function. Since the ResumeInsts are converted to calls to _Unwind_SjLj_Resume, add a (volatile) store of -1 to its 'call site'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138416 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't replace *all* uses with the new stuff.Bill Wendling2011-08-231-1/+1
| | | | | | | | | This is not necessarily the first or dominating use of the EH values. The IR breaks if it's not. So replace the specific value in the instruction with the new value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138406 91177308-0d34-0410-b5e6-96231b3b80d8
* Look at the end of the entry block for an invoke.Bill Wendling2011-08-231-4/+17
| | | | | | | | | The invoke could be at the end of the entry block. If it's the only one, then we won't process all of the landingpad instructions correctly. This code is currently ugly, but should be made much nicer once the new EH switch is thrown. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138397 91177308-0d34-0410-b5e6-96231b3b80d8
* A landingpad instruction is neither folded nor dead.Bill Wendling2011-08-231-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138387 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix 80 col violations.Evan Cheng2011-08-231-2/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138356 91177308-0d34-0410-b5e6-96231b3b80d8
* Split the landing pad's edge. Then for all uses of a landingpad instruction'sBill Wendling2011-08-221-2/+74
| | | | | | | | | | | value, we insert a load of the exception object and selector object from memory, which is where it actually resides. If it's used by a PHI node, we follow that to where it is being used. Eventually, all landingpad instructions should have no uses. Any PHI nodes that were associated with those landingpads should be removed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138302 91177308-0d34-0410-b5e6-96231b3b80d8
* Follow up to Jim's r138278. This fixes commuteInstruction so it handles ↵Evan Cheng2011-08-221-10/+12
| | | | | | two-address instructions correctly. I'll let Jim add a test case. :-) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138289 91177308-0d34-0410-b5e6-96231b3b80d8
* Some whitespace fixes and #include reordering.Bill Wendling2011-08-221-8/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138256 91177308-0d34-0410-b5e6-96231b3b80d8
* Be less redundant.Nick Lewycky2011-08-221-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138252 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not use named md nodes to track variables that are completely optimized. ↵Devang Patel2011-08-191-36/+23
| | | | | | This does not scale while doing LTO with debug info. New approach is to include list of variables in the subprogram info directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138145 91177308-0d34-0410-b5e6-96231b3b80d8
* Roll back the rest of r126557. It's a hack that will break in some obscure ↵Benjamin Kramer2011-08-191-6/+0
| | | | | | cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138130 91177308-0d34-0410-b5e6-96231b3b80d8
* Eli points out that this is what report_fatal_error() is for.Nick Lewycky2011-08-191-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138091 91177308-0d34-0410-b5e6-96231b3b80d8
* This is not actually unreachable, so don't use llvm_unreachable for it. SinceNick Lewycky2011-08-191-1/+2
| | | | | | | | | | | the intent seems to be to terminate even in Release builds, just use abort() directly. If program flow ever reaches a __builtin_unreachable (which llvm_unreachable is #define'd to on newer GCCs) then the program is undefined. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138068 91177308-0d34-0410-b5e6-96231b3b80d8
* Add llc flags to disable machine DCE and CSE.Jakob Stoklund Olesen2011-08-191-2/+8
| | | | | | This is useful for unit tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138028 91177308-0d34-0410-b5e6-96231b3b80d8
* Make a bunch of symbols private.Benjamin Kramer2011-08-192-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138025 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't treat a partial <def,undef> operand as a read.Jakob Stoklund Olesen2011-08-191-1/+2
| | | | | | | | | | | | | | | | | | | | | | | Normally, a partial register def is treated as reading the super-register unless it also defines the full register like this: %vreg110:sub_32bit<def> = COPY %vreg77:sub_32bit, %vreg110<imp-def> This patch also uses the <undef> flag on partial defs to recognize non-reading operands: %vreg110:sub_32bit<def,undef> = COPY %vreg77:sub_32bit This fixes a subtle bug in RegisterCoalescer where LIS->shrinkToUses would treat a coalesced copy as still reading the register, extending the live range artificially. My test case only works when I disable DCE so a dead copy is left for RegisterCoalescer, so I am not including it. <rdar://problem/9967101> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138018 91177308-0d34-0410-b5e6-96231b3b80d8
* add the comments of each declaration follow it, making it easier to read and ↵Renato Golin2011-08-181-49/+44
| | | | | | compare to GCC's result. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138009 91177308-0d34-0410-b5e6-96231b3b80d8
* Eliminate unnecessary forwarding function.Devang Patel2011-08-183-19/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138006 91177308-0d34-0410-b5e6-96231b3b80d8
* Add new DIE into the map asap.Devang Patel2011-08-181-8/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137998 91177308-0d34-0410-b5e6-96231b3b80d8
* FastISel: avoid function calls between the materialization of the constant ↵Ivan Krasin2011-08-181-5/+20
| | | | | | and its use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137993 91177308-0d34-0410-b5e6-96231b3b80d8
* Add the support in code-gen for the landingpad instruction lowering.Bill Wendling2011-08-172-3/+70
| | | | | | | | | | | The landingpad instruction is lowered into the EXCEPTIONADDR and EHSELECTION SDNodes. The information from the landingpad instruction is harvested by the 'AddLandingPadInfo' function. The new EH uses the current EH scheme in the back-end. This will change once we switch over to the new scheme. (Reviewed by Jakob!) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137880 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert patch. Forgot a dependent commit.Bill Wendling2011-08-171-39/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137875 91177308-0d34-0410-b5e6-96231b3b80d8
* Add the body of 'visitLandingPad'.Bill Wendling2011-08-171-3/+39
| | | | | | | | | This generates the SDNodes for the new exception handling scheme. It takes the two values coming from the landingpad instruction and assigns them to the EXCEPTIONADDR and EHSELECTION nodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137873 91177308-0d34-0410-b5e6-96231b3b80d8
* Modify for the new EH scheme.Bill Wendling2011-08-171-1/+57
| | | | | | | | | Things are much saner now. We no longer need to modify the laning pads, because of the invariants we impose upon them. The only thing DwarfEHPrepare needs to do is convert the 'resume' instruction into a call to '_Unwind_Resume'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137855 91177308-0d34-0410-b5e6-96231b3b80d8
* Until now all debug info MDNodes referred to a root MDNode, a compile unit. ↵Devang Patel2011-08-164-99/+96
| | | | | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137778 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused Target argument from AsmParser construction methods.Jim Grosbach2011-08-161-1/+1
| | | | | | | The argument is unused, and is a layering violation in any case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137735 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unnecessary version check.Devang Patel2011-08-161-2/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137728 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r137562 because it caused PR10674Nadav Rotem2011-08-161-7/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137719 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor.Devang Patel2011-08-152-49/+68
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137689 91177308-0d34-0410-b5e6-96231b3b80d8
* Continue to hoist uses of getCompileUnit() up. The goal is to get rid of ↵Devang Patel2011-08-152-21/+24
| | | | | | uses of getCompileUnit(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137683 91177308-0d34-0410-b5e6-96231b3b80d8
* This is somewhat déjà-vu, but avoid using getCompileUnit() as much as ↵Devang Patel2011-08-152-14/+14
| | | | | | possible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137668 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor. Variables are part of compile unit so let CompileUnit create new ↵Devang Patel2011-08-154-123/+129
| | | | | | variable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137663 91177308-0d34-0410-b5e6-96231b3b80d8
* There is no need to maintain a set to keep track of variables that use ↵Devang Patel2011-08-152-8/+2
| | | | | | location expressions. In such cases, AT_location attribute's value will be a label. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137659 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix warning.Devang Patel2011-08-152-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137658 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify. Let DbgVariable keep track of variable's DBG_VALUE machine ↵Devang Patel2011-08-152-55/+24
| | | | | | instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137656 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify mapping to variable from its abstract variable info.Devang Patel2011-08-152-29/+18
| | | | | | | 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137637 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor.Devang Patel2011-08-152-5/+11
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137632 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor.Devang Patel2011-08-152-15/+9
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137631 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor. Global variables are part of compile unit so let CompileUnit ↵Devang Patel2011-08-153-129/+114
| | | | | | create new global variable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137621 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor. A subprogram is part of compile unit so let CompileUnit construct ↵Devang Patel2011-08-154-114/+141
| | | | | | new subprogram. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137618 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR 10635. When generating integer constants, the constant element type mayNadav Rotem2011-08-131-0/+7
| | | | | | | | | be illegal, even if the requested vector type is legal. Testcase is one of the disabled ARM tests in the vector-select patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137562 91177308-0d34-0410-b5e6-96231b3b80d8
* Initial commit of the 'landingpad' instruction.Bill Wendling2011-08-122-0/+4
| | | | | | | | | | | | | This implements the 'landingpad' instruction. It's used to indicate that a basic block is a landing pad. There are several restrictions on its use (see LangRef.html for more detail). These restrictions allow the exception handling code to gather the information it needs in a much more sane way. This patch has the definition, implementation, C interface, parsing, and bitcode support in it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137501 91177308-0d34-0410-b5e6-96231b3b80d8
* Use ArrayRef.Devang Patel2011-08-121-6/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137485 91177308-0d34-0410-b5e6-96231b3b80d8
* switch to use the new api for structtypes.Chris Lattner2011-08-121-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137480 91177308-0d34-0410-b5e6-96231b3b80d8
* Provide fast path as Jakob suggested.Devang Patel2011-08-121-0/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137478 91177308-0d34-0410-b5e6-96231b3b80d8
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