RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2024-12-24 21:14:56 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
f768bba43f
llvm/lib/CodeGen
History
Chris Lattner f768bba43f Allow the live interval analysis pass to be a bit more aggressive about 
numbering values in live ranges for physical registers.

The alpha backend currently generates code that looks like this:

  vreg = preg
...
  preg = vreg
  use preg
...
  preg = vreg
  use preg

etc.  Because vreg contains the value of preg coming in, each of the
copies back into preg contain that initial value as well.

In the case of the Alpha, this allows this testcase:

void "foo"(int %blah) {
        store int 5, int *%MyVar
        store int 12, int* %MyVar2
        ret void
}

to compile to:

foo:
        ldgp $29, 0($27)
        ldiq $0,5
        stl $0,MyVar
        ldiq $0,12
        stl $0,MyVar2
        ret $31,($26),1

instead of:

foo:
        ldgp $29, 0($27)
        bis $29,$29,$0
        ldiq $1,5
        bis $0,$0,$29
        stl $1,MyVar
        ldiq $1,12
        bis $0,$0,$29
        stl $1,MyVar2
        ret $31,($26),1

This does not seem to have any noticable effect on X86 code.

This fixes PR535.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20536 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-09 23:05:19 +00:00
..
SelectionDAG constant fold FP_ROUND_INREG, ZERO_EXTEND_INREG, and SIGN_EXTEND_INREG 2005-03-09 18:37:12 +00:00
AsmPrinter.cpp Print GEP offsets as signed values instead of unsigned values. On X86, this 2005-02-14 21:40:26 +00:00
BranchFolding.cpp Changes For Bug 352 2004-09-01 22:55:40 +00:00
IntrinsicLowering.cpp Lower llvm.isunordered(a, b) into a != a | b != b. 2005-03-01 02:07:58 +00:00
LiveInterval.cpp Prevent accessing past the end of the intervals vector, this fixes 2004-12-04 01:22:09 +00:00
LiveInterval.h Fix typeo 2004-11-18 04:31:10 +00:00
LiveIntervalAnalysis.cpp Allow the live interval analysis pass to be a bit more aggressive about 2005-03-09 23:05:19 +00:00
LiveIntervalAnalysis.h Allow the live interval analysis pass to be a bit more aggressive about 2005-03-09 23:05:19 +00:00
LiveVariables.cpp Just in case, handle something that is both a use and a def. 2005-01-19 17:11:51 +00:00
MachineBasicBlock.cpp Improve conformance with the Misha spelling benchmark suite 2005-01-30 00:09:23 +00:00
MachineCodeEmitter.cpp Fix the FIXME, nuke the JIT specific forceCompilationOf method. 2004-11-22 21:54:35 +00:00
MachineFunction.cpp Improve conformance with the Misha spelling benchmark suite 2005-01-30 00:09:23 +00:00
MachineInstr.cpp Allow machine operands to represent global variables with offsets. This is 2004-10-15 04:38:41 +00:00
Makefile Change Library Names Not To Conflict With Others When Installed 2004-10-27 23:18:45 +00:00
Passes.cpp Changes For Bug 352 2004-09-01 22:55:40 +00:00
PHIElimination.cpp Changes For Bug 352 2004-09-01 22:55:40 +00:00
PhysRegTracker.h
PrologEpilogInserter.cpp Simplify/speedup the PEI by not having to scan for uses of the callee saved 2005-01-23 23:13:12 +00:00
RegAllocIterativeScan.cpp Update these register allocators to set the PhysRegUsed info in MachineFunction. 2005-01-23 22:45:13 +00:00
RegAllocLinearScan.cpp Update these register allocators to set the PhysRegUsed info in MachineFunction. 2005-01-23 22:45:13 +00:00
RegAllocLocal.cpp Update this pass to set PhysRegsUsed info in MachineFunction. 2005-01-23 22:51:56 +00:00
RegAllocSimple.cpp Update physregsused info. 2005-01-23 22:55:45 +00:00
TwoAddressInstructionPass.cpp Use the TargetInstrInfo::commuteInstruction method to commute instructions 2005-01-19 07:08:42 +00:00
UnreachableBlockElim.cpp Changes For Bug 352 2004-09-01 22:55:40 +00:00
VirtRegMap.cpp Update these register allocators to set the PhysRegUsed info in MachineFunction. 2005-01-23 22:45:13 +00:00
VirtRegMap.h When a virtual register is folded into an instruction, keep track of whether 2004-10-01 23:15:36 +00:00