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67 Commits

Author SHA1 Message Date
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
Chris Lattner
4672f71ac4 The stack alignment is now computed dynamically, just verify it is correct. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27380 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-04-03 21:39:57 +00:00
Chris Lattner
cbef8ba5f9 Always compute max align. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24227 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-11-06 17:43:20 +00:00
Nate Begeman
ae232e7a10 Add the necessary support to the ISel to allow targets to codegen the new 
alignment information appropriately.  Includes code for PowerPC to support
fixed-size allocas with alignment larger than the stack.  Support for
arbitrarily aligned dynamic allocas coming soon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24224 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-11-06 09:00:38 +00:00
Chris Lattner
8fb040e584 now that we have a reg class to spill with, get this info from the regclass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23559 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 17:19:22 +00:00
Chris Lattner
80a4f169b4 Now that we have getCalleeSaveRegClasses() info, use it to pass the register 
class into the spill/reload methods.  Targets can now rely on that argument.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23556 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 16:59:07 +00:00
Chris Lattner
bf9716b9c4 Change this code ot pass register classes into the stack slot spiller/reloader 
code.  PrologEpilogInserter hasn't been updated yet though, so targets cannot
use this info.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23536 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-09-30 01:29:00 +00:00
Chris Lattner
dfd58709cc Fix a bug in my previous patch that was using the wrong iterator. This fixes 
Olden/bisort among others.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23124 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-29 00:10:46 +00:00
Chris Lattner
ed461e0faf Make this code safe for when loadRegFromStackSlot inserts multiple instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23108 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-08-26 22:18:32 +00:00
Chris Lattner
4fc997941d When inserting callee-save register reloads, make sure to skip over any 
terminator instructions before the 'ret' in case the target has a
multi-instruction return sequence.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22041 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-15 03:09:58 +00:00
Chris Lattner
2a82ef317c Tolerate instrs with extra args 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21982 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-05-13 21:07:15 +00:00
Misha Brukman
edf128a7fa Remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21420 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-04-21 22:36:52 +00:00
Chris Lattner
3563015b0d Simplify/speedup the PEI by not having to scan for uses of the callee saved 
registers.  This information is computed directly by the register allocator
now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19795 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-23 23:13:12 +00:00
Chris Lattner
92b9fcea7b Speed this up a bit by making ModifiedRegs a vector<char> not vector<bool> 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19787 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-23 21:45:01 +00:00
Chris Lattner
5037a15910 Implicitly defined registers can clobber callee saved registers too! 
This fixes the return-address-not-being-saved problem in the Alpha backend.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19741 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-22 00:49:16 +00:00
Chris Lattner
3ca6a2c72c Add an assertion that would have made more sense to duraid 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19704 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-19 21:32:07 +00:00
Nate Begeman
81ab877a0c Put this change back in after testing from Reid proved its innocence. getSpillSize now returns value in bits 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16102 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-29 22:00:24 +00:00
Nate Begeman
bd2efb9600 Back out change to divide getSpillSize by 8 until I figure out why it breaks x86, which has register sizes in bits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16073 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-27 16:48:24 +00:00
Nate Begeman
5709998993 Register sizes are in bits, not bytes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16070 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-27 04:28:10 +00:00
Chris Lattner
7008034c9f Register info alignment is in bits, frame object alignment is (currently) in 
bytes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15970 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-21 20:04:59 +00:00
Chris Lattner
fa1face30a Now that we have per-register spill size/alignment info, remove more uses 
of getRegClass


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15967 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-21 19:45:10 +00:00
Chris Lattner
26eb14ba51 Stop using CreateStackObject(RegClass*) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15775 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-15 22:02:22 +00:00
Chris Lattner
57f1b67c34 These methods no longer take a TargetRegisterClass* operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15774 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-15 21:56:44 +00:00
Alkis Evlogimenos
8c9b4de574 Make this compile on gc 3.4.1 (static_cast to non-const type was not 
allowed).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15766 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-15 09:18:55 +00:00
Nate Begeman
5de0f7aa14 Elminiate MachineFunction& argument from eliminateFrameIndex 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15736 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-14 22:00:10 +00:00
Chris Lattner
c330b68fb7 Split saveCallerSavedRegisters into two methods for clarity, and add comments. 
Add support for targets that must spill certain physregs at certain locations.

Patch contributed by Nate Begeman, slightly hacked by me.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15701 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-12 19:01:14 +00:00
Chris Lattner
ecf8afdc20 Ok get rid of the REST of the tabs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15564 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-07 07:18:41 +00:00
Chris Lattner
d555da52f4 Death to tabs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15563 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-08-07 07:07:57 +00:00
Chris Lattner
7f7bbc2fdb Fix fallout from getOffsetOfLocalArea() being negated. Debugging dumps were being 
printed incorrectly, and we were reserving 8 extra bytes of stack space for functions
on X86.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14152 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-11 06:37:11 +00:00
Chris Lattner
577aec1428 Fix the prolog epilog code inserter to match the documentation and support 
targets whose stack grows up.

Patch contributed by Vladimir Prus


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14111 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-10 06:23:35 +00:00
Chris Lattner
9bcdcd17c7 Adjust to new TargetMachine interface 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13956 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-06-02 05:57:12 +00:00
Alkis Evlogimenos
859a18b583 Make dense maps keyed on physical registers smallerusing 
MRegisterInfo::getNumRegs() instead of
MRegisterInfo::FirstVirtualRegister.

Also use MRegisterInfo::is{Physical,Virtual}Register where
appropriate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11477 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-15 21:37:17 +00:00
Chris Lattner
05d8350c12 Allow for fixed objects to reside in the local area, and if they don't to not 
clobber them by allocating other objects in the same space!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11454 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-15 00:14:20 +00:00
Chris Lattner
93799292c1 There is no reason to align the stack pointer if there are no callees of this function! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11449 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-14 20:10:59 +00:00
Alkis Evlogimenos
c0b9dc5be7 Change MachineBasicBlock's vector of MachineInstr pointers into an 
ilist of MachineInstr objects. This allows constant time removal and
insertion of MachineInstr instances from anywhere in each
MachineBasicBlock. It also allows for constant time splicing of
MachineInstrs into or out of MachineBasicBlocks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11340 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-12 02:27:10 +00:00
Chris Lattner
1cbe4d0ad0 Do not use MachineOperand::isVirtualRegister either! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11283 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-10 21:12:22 +00:00