long live interval that has low usage density.
1. Change order of coalescing to join physical registers with virtual
registers first before virtual register intervals become too long.
2. Check size and usage density to determine if it's worthwhile to join.
3. If joining is aborted, assign virtual register live interval allocation
preference field to the physical register.
4. Register allocator should try to allocate to the preferred register
first (if available) to create identify moves that can be eliminated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36218 91177308-0d34-0410-b5e6-96231b3b80d8
pointer from ilist, storing it in the prev pointer of the first node in the
list instead.
This shrinks ilist from 8 to 4 bytes, BasicBlock from 40->36 bytes, Function
from 76->68 bytes, Module from 52->44 bytes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36210 91177308-0d34-0410-b5e6-96231b3b80d8
Also, fixed static case in presence of eax livin. This fixes PR331
PS: Why don't we still have push/pop instructions? :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36195 91177308-0d34-0410-b5e6-96231b3b80d8
field into SubclassData in Value. This shrinks GlobalVAlue from 48->40
bytes, Function from 88->76, and GlobalVariable from 76->68. This trims
4640 bytes off my testcase, reading a bc file without materializing any
functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36192 91177308-0d34-0410-b5e6-96231b3b80d8
object is always constant. As such, evaluate it at compile time instead of storing
it as an ivar in SymbolTableListTraits. This shrinks every SymbolTableListTraits
ilist by a word, shrinking BasicBlock from 44->40 bytes, Function from 96->88 bytes,
and Module from 60->52 bytes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36189 91177308-0d34-0410-b5e6-96231b3b80d8
of two. This shrinkifies Function by 8 bytes (104->96) and Module by 8
bytes (68->60). On a testcase of mine, this reduces the memory used to
read a module header from 565680b to 561024, a little over 4K.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36188 91177308-0d34-0410-b5e6-96231b3b80d8
Don't assert everytime an intrinsic name isn't recognized. Instead, make
the assert optional when callin getIntrinsicID(). This allows the assembler
to handle invalid intrinsic names gracefully.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36120 91177308-0d34-0410-b5e6-96231b3b80d8
constructing ImmediateDominator is now folded into DomTree construction.
This is part of the ongoing work for PR217.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36063 91177308-0d34-0410-b5e6-96231b3b80d8
handlers (like the pass list). My previous fix only supported *new* command
line options, not additions to old ones.
This fixes test/Feature/load_module.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35935 91177308-0d34-0410-b5e6-96231b3b80d8
Put the parameter attributes in their own ParamAttr name space. Adjust the
rest of llvm as a result.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35877 91177308-0d34-0410-b5e6-96231b3b80d8
and Mach-O systems. Additionally, correct the Mach-O logic code to look at
byte 12 not byte 15. Hopefully this fixes the llvm-ld warning on Darwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35876 91177308-0d34-0410-b5e6-96231b3b80d8
* Add ParamAttrs to InvokeInst class too.
* Make sure all initializes of ParamAttrs in CallInst and InvokeInst are 0
* Destruct the ParamAttrs in Call/Invoke destructors to avoid memory
leaks. This will change when ParamAttrsList is uniquified but needs to
be correct until then.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35824 91177308-0d34-0410-b5e6-96231b3b80d8
* Add ParamAttrList pointers to Function and CallInst.
* Move the implementation of ParamAttrList from Type.cpp to Function.cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35818 91177308-0d34-0410-b5e6-96231b3b80d8
1. Fix some bugs in the jump table lowering threshold
2. Implement much better metric for optimal pivot selection
3. Tune thresholds for different lowering methods
4. Implement shift-and trick for lowering small (<machine word
length) cases with few destinations. Good testcase will follow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35816 91177308-0d34-0410-b5e6-96231b3b80d8
