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92 Commits

Author SHA1 Message Date
Dan Gohman
98ca4f2a32 Major calling convention code refactoring. 
Instead of awkwardly encoding calling-convention information with ISD::CALL,
ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering
provides three virtual functions for targets to override:
LowerFormalArguments, LowerCall, and LowerRet, which replace the custom
lowering done on the special nodes. They provide the same information, but
in a more immediately usable format.

This also reworks much of the target-independent tail call logic. The
decision of whether or not to perform a tail call is now cleanly split
between target-independent portions, and the target dependent portion
in IsEligibleForTailCallOptimization.

This also synchronizes all in-tree targets, to help enable future
refactoring and feature work.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78142 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-05 01:29:28 +00:00
Chris Lattner
f0144127b9 Rip all of the global variable lowering logic out of TargetAsmInfo. Since 
it is highly specific to the object file that will be generated in the end,
this introduces a new TargetLoweringObjectFile interface that is implemented
for each of ELF/MachO/COFF/Alpha/PIC16 and XCore.

Though still is still a brutal and ugly refactoring, this is a major step
towards goodness.

This patch also:
1. fixes a bunch of dangling pointer problems in the PIC16 backend.
2. disables the TargetLowering copy ctor which PIC16 was accidentally using.
3. gets us closer to xcore having its own crazy target section flags and
   pic16 not having to shadow sections with its own objects.
4. fixes wierdness where ELF targets would set CStringSection but not
   CStringSection_.  Factor the code better.
5. fixes some bugs in string lowering on ELF targets.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77294 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-28 03:13:23 +00:00
Owen Anderson
e922c02019 Get rid of the Pass+Context magic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76702 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-22 00:24:57 +00:00
Eli Friedman
d8f7a36270 Oops, accidentally set a legal operation to expand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76165 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 07:34:23 +00:00
Eli Friedman
e4ce880dfa Expand misc operations from test/CodeGen/Generic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76163 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 07:28:06 +00:00
Torok Edwin
c23197a26f 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").


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75640 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-14 16:55:14 +00:00
Torok Edwin
c25e7581b9 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75379 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-11 20:10:48 +00:00
Owen Anderson
d1474d09cb Thread LLVMContext through MVT and related parts of SDISel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75153 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-09 17:57:24 +00:00
Torok Edwin
dac237e182 Implement changes from Chris's feedback. 
Finish converting lib/Target.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75043 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-08 20:53:28 +00:00
Torok Edwin
804e0fea40 Convert more abort() calls to llvm_report_error(). 
Also remove trailing semicolon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75027 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-08 19:04:27 +00:00
Bill Wendling
b4202b84d7 Update comments to make it clear that the function alignment is the Log2 of the 
bytes and not bytes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74624 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-01 18:50:55 +00:00
Bill Wendling
20c568f366 Add an "alignment" field to the MachineFunction object. It makes more sense to 
have the alignment be calculated up front, and have the back-ends obey whatever
alignment is decided upon.

This allows for future work that would allow for precise no-op placement and the
like.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74564 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-30 22:38:32 +00:00
Anton Korobeynikov
e4fdb8b8ff Mark rotl/rotr as expand. This generates pretty ugly code, but this is better than nothing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71976 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-17 10:16:28 +00:00
Anton Korobeynikov
aceb620de8 Typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71975 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-17 10:15:22 +00:00
Anton Korobeynikov
da4d2f63d8 Allow 8 bit select in custom inserter 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71239 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-08 18:51:21 +00:00
Anton Korobeynikov
0616c3b678 Expand UREM / SREM into libcalls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71236 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-08 18:50:41 +00:00
Anton Korobeynikov
1bb8cd723d Make handling of conditional stuff much more straightforward 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70767 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:19:09 +00:00
Anton Korobeynikov
f2f540261b Expand divisions into libcalls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70765 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:18:33 +00:00
Anton Korobeynikov
b78e214274 Custom lower SIGN_EXTEND 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70763 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:17:49 +00:00
Anton Korobeynikov
bf8ef3f29d Add 8bit shifts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70759 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:16:37 +00:00
Anton Korobeynikov
e699d0f549 Handle logical shift right (at least I hope so :) ) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70758 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:16:17 +00:00
Anton Korobeynikov
0dbf292f68 Expand all sorts of indirect branches 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70755 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:15:40 +00:00
Anton Korobeynikov
5d59f68ade Properly handle ExternalSymbol's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70752 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:14:46 +00:00
Anton Korobeynikov
8725bd22bf Expand muls (all mulls!) to libcalls for now 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70751 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:14:25 +00:00
Anton Korobeynikov
ea54c9846b Add left shift 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70747 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:13:17 +00:00
Anton Korobeynikov
8b528e52ee Lower select with custom inserted and make condjumps generic 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70744 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:12:23 +00:00
Anton Korobeynikov
ed1a51af37 Add first draft for conditions, conditional branches, etc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70743 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:12:06 +00:00
Anton Korobeynikov
c08163e72d Small tweaking 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70741 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:11:35 +00:00
Anton Korobeynikov
3513ca81c6 Add lowering for global address nodes. Not pretty efficient though. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70730 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:08:33 +00:00
Anton Korobeynikov
b561264d2b Add call frame setup instruction elimination and lowerid for bunch of call-related stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70728 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:07:54 +00:00
Anton Korobeynikov
4428885c5a Add CALL lowering. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70727 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:07:31 +00:00
Anton Korobeynikov
54f30d3fc9 Add normal and trunc stores 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70724 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:06:26 +00:00
Anton Korobeynikov
36b6e533c1 Basic support for mem=>reg moves 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70723 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:06:03 +00:00
Anton Korobeynikov
0fc32dae8f Add pattern for OR 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70720 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:05:00 +00:00
Anton Korobeynikov
b8639f5214 Cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70716 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:03:50 +00:00
Anton Korobeynikov
d2c94ae49e Add dummy lowering for shifts 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70715 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:03:33 +00:00
Anton Korobeynikov
1476d97037 We don't have any div at all - thus mark it as expensive 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70714 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:03:14 +00:00
Anton Korobeynikov
1df221f2bb Add code enough for emission of reg-reg and reg-imm moves. This allows us to compile "ret i16 0" properly! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70710 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:02:04 +00:00
Anton Korobeynikov
dcb802cf7b Provide set of reserved registers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70704 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 13:00:11 +00:00
Anton Korobeynikov
fd1b7c778c Add proper ISD::RET lowering 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70703 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 12:59:50 +00:00
Anton Korobeynikov
c8fbb6ae20 Add first draft of MSP430 calling convention stuff and draft of ISD::FORMAL_ARGUMENTS node lowering. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70702 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 12:59:33 +00:00
Anton Korobeynikov
f2c3e179ec Dummy MSP430 backend 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70694 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-03 12:57:15 +00:00