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1b08bbca5592351a940bcd164bdec724ee954326
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102 Commits

Author SHA1 Message Date
Evan Cheng
1b08bbca55 Remove the nasty LABEL hack with a much less evil one. Now llvm.dbg.func.start implies a stoppoint is set. SelectionDAGISel records a new source line but does not create a ISD::LABEL node for this special stoppoint. Asm printer will magically print this label. This ensures nothing is emitted before. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46635 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-01 09:10:45 +00:00
Evan Cheng
bb81d97feb Add an extra operand to LABEL nodes which distinguishes between debug, EH, or misc labels. This fixes the EH breakage. However I am not convinced this is *the* solution. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46609 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-31 09:59:15 +00:00
Evan Cheng
00dff8dda2 Also avoid adding callee save code before debug labels. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46586 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-31 00:27:49 +00:00
Chris Lattner
749c6f6b5e rename TargetInstrDescriptor -> TargetInstrDesc. 
Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45695 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-07 07:27:27 +00:00
Chris Lattner
349c495200 Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptor 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45680 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-07 03:13:06 +00:00
Chris Lattner
69244300b8 Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflects 
that it is cheap and efficient to get.

Move a variety of predicates from TargetInstrInfo into 
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around.  Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.

Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45674 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-07 01:56:04 +00:00
Duncan Sands
920595a960 Remove an unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45655 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-06 07:43:13 +00:00
Owen Anderson
a393cd3306 I should not be allowed to commit when sleepy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45608 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-05 00:48:55 +00:00
Owen Anderson
f6372aa1cc Move some more instruction creation methods from RegisterInfo into InstrInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45484 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-01 21:11:32 +00:00
Chris Lattner
84bc5427d6 Rename SSARegMap -> MachineRegisterInfo in keeping with the idea 
that "machine" classes are used to represent the current state of
the code being compiled.  Given this expanded name, we can start 
moving other stuff into it.  For now, move the UsedPhysRegs and
LiveIn/LoveOuts vectors from MachineFunction into it.

Update all the clients to match.

This also reduces some needless #includes, such as MachineModuleInfo
from MachineFunction.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45467 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-31 04:13:23 +00:00
Chris Lattner
9e3304900f MachineOperand::getImmedValue -> MachineOperand::getImm 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45454 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-30 20:50:28 +00:00
Chris Lattner
4ee451de36 Remove attribution from file headers, per discussion on llvmdev. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:36:04 +00:00
Evan Cheng
d64b5c82b9 Add a argument to storeRegToStackSlot and storeRegToAddr to specify whether 
the stored register is killed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44600 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-05 03:14:33 +00:00
Anton Korobeynikov
2365f51ed0 Long live the exception handling! 
This patch fills the last necessary bits to enable exceptions
handling in LLVM. Currently only on x86-32/linux.

In fact, this patch adds necessary intrinsics (and their lowering) which
represent really weird target-specific gcc builtins used inside unwinder.

After corresponding llvm-gcc patch will land (easy) exceptions should be
more or less workable. However, exceptions handling support should not be 
thought as 'finished': I expect many small and not so small glitches
everywhere.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@39855 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-07-14 14:06:15 +00:00
Lauro Ramos Venancio
8d410b6938 Fix PR1424. 
When a function has FP, the register scavenging spill slot offset already
was calculated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37371 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-31 18:27:58 +00:00
Devang Patel
1997473cf7 Drop 'const' 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36662 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-03 01:11:54 +00:00
Devang Patel
3e15bf33e0 Use 'static const char' instead of 'static const int'. 
Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36652 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-02 21:39:20 +00:00
Devang Patel
794fd75c67 Do not use typeinfo to identify pass in pass manager. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36632 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-01 21:15:47 +00:00
Evan Cheng
8e33473321 If call frame is not part of stack frame and no dynamic alloc, eliminateFrameIndex() must adjust SP offset with size of call frames. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36625 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-01 09:01:42 +00:00
Evan Cheng
5c3885ce8e Under normal circumstances, when a frame pointer is not required, we reserve 
argument space for call sites in the function immediately on entry to the
current function. This eliminates the need for add/sub sp brackets around call
sites. However, this is not always a good idea. If the "call frame" is large and
the target load / store instructions have small immediate field to encode sp
offset, this can cause poor codegen. In the worst case, this can make it
impossible to scavenge a register if the reserved spill slot is pushed too far
apart from sp / fp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36607 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-05-01 00:52:08 +00:00
Evan Cheng
6c087e5585 Match MachineFunction::UsedPhysRegs changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36452 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-25 22:13:27 +00:00
Chris Lattner
ea84c5ee95 support for >4G stack frames 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36425 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-25 04:30:24 +00:00
Chris Lattner
a401b1e1c5 support > 4G stack objects 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36422 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-25 04:20:54 +00:00
Chris Lattner
0ebe9c132c Fix a bug introduced with my previous patch, where it didn't correctly handle 
instructions which replace themselves when FI's are rewritten (common on ppc).
This fixes CodeGen/PowerPC/2006-10-17-ppc64-alloca.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35789 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 01:19:33 +00:00
Chris Lattner
d2eae62e93 Fix CodeGen/Generic/2007-04-08-MultipleFrameIndices.ll and PR1308: 
some instructions can have multiple frame indices in them.  If this happens,
rewrite all of them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35785 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-04-09 00:46:10 +00:00
Evan Cheng
87f8bf65dd If target decides to create an emergency spill slot, make sure it's closest to SP or frame pointer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34965 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-06 10:02:38 +00:00
Evan Cheng
a81a5ab357 Delete register scavenger when done with it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34786 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-01 10:23:33 +00:00
Evan Cheng
23322d1427 Interface clean up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34772 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-03-01 02:25:51 +00:00
Chris Lattner
e5876ce21a add a newline at end of file 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34735 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 06:42:11 +00:00
Evan Cheng
36230cdda4 Make requiresRegisterScavenging determination on a per MachineFunction basis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34711 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 00:59:19 +00:00
Evan Cheng
37f15a6d48 MRegisterInfo disowns RegScavenger. It's immutable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34706 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-28 00:17:36 +00:00
Evan Cheng
3f6fd87473 Let MRegisterInfo now owns RegScavenger. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34691 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-27 21:10:33 +00:00
Evan Cheng
ed570dedad forward() should not increment internal iterator. Its client may insert instruction between now and next forward() call. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34649 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-27 01:58:48 +00:00
Evan Cheng
49dd06461a First potential client of register scavenger. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34516 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-23 01:11:26 +00:00
Jim Laskey
44c3b9fdd4 Change the MachineDebugInfo to MachineModuleInfo to better reflect usage 
for debugging and exception handling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33550 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-26 21:22:28 +00:00
Evan Cheng
02a2029141 Added a MRegisterInfo hook that tells PEI the target is responsible for 
rounding the stack frame to a multiple of stack alignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33504 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-25 22:12:41 +00:00
Evan Cheng
367372a30c PEI is now responsible for adding MaxCallFrameSize to frame size and align the stack. Each target can further adjust the frame size if necessary. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33460 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-23 09:38:11 +00:00
Evan Cheng
70cfa88944 Remove an unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33396 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-20 09:21:54 +00:00
Evan Cheng
57a2306074 We not align the final stack slot but instead let the target do so in emitPrologue(). Each target can make adjustments to the stack frame and re-align the stack as it deem appropriate. Do not align it twice which can end up wasting stack space. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33387 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-20 02:07:13 +00:00
Evan Cheng
ad93d7fda5 - Fixing naming inconsistency: calleesave -> calleesaved. 
- Make use of spillCalleeSavedRegisters() and restoreCalleeSavedRegisters().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32822 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-02 21:31:15 +00:00
Evan Cheng
7d3223eef2 Initialize {Min|Max}CSFrameIndex properly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32299 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-12-07 02:25:34 +00:00
Evan Cheng
5feaa9a707 TargetRegisterClass specifies the desired spill alignment. However, it cannot be honored if stack alignment is smaller. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30648 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-28 18:52:32 +00:00
Evan Cheng
c2b4ec37de PEI now place callee save spills closest to the address pointed to by the 
incoming stack. This allows X86 backend to use push / pop in epilogue /
prologue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30636 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-28 00:10:27 +00:00
Evan Cheng
692d4e0823 Rename function. It's determining which callee-save registers to save. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30616 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-09-26 22:29:31 +00:00
Chris Lattner
a4f0b3a084 s|llvm/Support/Visibility.h|llvm/Support/Compiler.h| 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29911 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-27 12:54:02 +00:00
Jim Laskey
08ede262a7 Tidy up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29888 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 22:56:30 +00:00
Jim Laskey
f3e4f0e615 Consolidate callee saved register information so that it can me used by debug 
information and exception handling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29881 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-25 19:45:51 +00:00
Chris Lattner
f8c68f694c Shave another 27K off libllvmgcc.dylib with visibility hidden 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28973 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-06-28 22:17:39 +00:00
Chris Lattner
c485e55c65 Remove dead variable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28253 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-05-12 18:02:04 +00:00
Jim Laskey
4188699f80 Foundation for call frame information. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27491 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-04-07 16:34:46 +00:00