Commit Graph

7 Commits

Author SHA1 Message Date
Akira Hatanaka
69c19f7316 Change StackDirection from StackGrowsUp to StackGrowsDown.
The following improvements are accomplished as a result of applying this patch:
- Fixed frame objects' offsets (relative to either the virtual frame pointer or
  the stack pointer) are set before instruction selection is completed. There is
  no need to wait until Prologue/Epilogue Insertion is run to set them.
- Calculation of final offsets of fixed frame objects is straightforward. It is
  no longer necessary to assign negative offsets to fixed objects for incoming
  arguments in order to distinguish them from the others.
- Since a fixed object has its relative offset set during instruction
  selection, there is no need to conservatively set its alignment to 4.
- It is no longer necessary to reorder non-fixed frame objects in 
  MipsFrameLowering::adjustMipsStackFrame.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131915 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-23 20:16:59 +00:00
Jakob Stoklund Olesen
c74399f8b4 Don't run this test through -regalloc=basic.
The basic allocator is really bad about hinting, so it doesn't eliminate all
copies when physreg joining is disabled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130817 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-04 01:01:44 +00:00
Akira Hatanaka
fc693036a4 Re-enable test o32_cc_vararg.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129616 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15 22:23:09 +00:00
Akira Hatanaka
99a2e98edd Add pass that expands pseudo instructions into target instructions after register allocation. Define pseudos that get expanded into mtc1 or mfc1 instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129594 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-15 19:52:08 +00:00
Andrew Trick
87896d9368 Recommit r129383. PreRA scheduler heuristic fixes: VRegCycle, TokenFactor latency.
Additional fixes:
Do something reasonable for subtargets with generic
itineraries by handle node latency the same as for an empty
itinerary. Now nodes default to unit latency unless an itinerary
explicitly specifies a zero cycle stage or it is a TokenFactor chain.

Original fixes:
UnitsSharePred was a source of randomness in the scheduler: node
priority depended on the queue data structure. I rewrote the recent
VRegCycle heuristics to completely replace the old heuristic without
any randomness. To make the ndoe latency adjustments work, I also
needed to do something a little more reasonable with TokenFactor. I
gave it zero latency to its consumers and always schedule it as low as
possible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129421 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-13 00:38:32 +00:00
Jakob Stoklund Olesen
a6f7499244 Fix Mips, Sparc, and XCore tests that were dependent on register allocation.
Add an extra run with -regalloc=basic to keep them honest.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128654 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-31 18:42:43 +00:00
Bruno Cardoso Lopes
954dac0f88 Improve varags handling, with testcases. Patch by Sasa Stankovic
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127349 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-09 19:22:22 +00:00