Chris Lattner f38df04c3a Fix a problem that Nate noticed, where spill code was not getting coallesced ...

with copies, leading to code like this:

       lwz r4, 380(r1)
       or r10, r4, r4    ;; Last use of r4

By teaching the PPC backend how to fold spills into copies, we now get this
code:

       lwz r10, 380(r1)

wow. :)

This reduces a testcase nate sent me from 1505 instructions to 1484.

Note that this could handle FP values but doesn't currently, for reasons
mentioned in the patch


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23298 91177308-0d34-0410-b5e6-96231b3b80d8

2005-09-09 21:46:49 +00:00

..

Alpha

ignore generated files

2005-09-07 23:47:44 +00:00

CBackend

1. Use SubtargetFeatures in llc/lli.

2005-09-01 21:38:21 +00:00

IA64

ignore generated files

2005-09-07 23:47:44 +00:00

PowerPC

Fix a problem that Nate noticed, where spill code was not getting coallesced

2005-09-09 21:46:49 +00:00

Skeleton

1. Use SubtargetFeatures in llc/lli.

2005-09-01 21:38:21 +00:00

Sparc

ignore generated files

2005-09-07 23:47:44 +00:00

SparcV8

ignore generated files

2005-09-07 23:47:44 +00:00

SparcV9

1. Use SubtargetFeatures in llc/lli.

2005-09-01 21:38:21 +00:00

X86

Handle any_extend like zext

2005-09-02 00:16:09 +00:00

Makefile

Implement the --enable-targets= feature of the configure script. The make

2005-04-22 17:20:11 +00:00

MRegisterInfo.cpp

Convert tabs to spaces

2005-04-22 17:54:37 +00:00

SubtargetFeature.cpp

Print:

2005-09-07 05:44:14 +00:00

Target.td

spell this right

2005-08-26 20:55:40 +00:00

TargetData.cpp

Update to use the new MathExtras.h support for log2 computation.

2005-08-02 19:26:06 +00:00

TargetFrameInfo.cpp

Eliminate all remaining tabs and trailing spaces.

2005-07-27 06:12:32 +00:00

TargetInstrInfo.cpp

Convert tabs to spaces

2005-04-22 17:54:37 +00:00

TargetMachine.cpp

Remove the X86 and PowerPC Simple instruction selectors; their time has

2005-08-18 23:53:15 +00:00

TargetMachineRegistry.cpp

1. Use SubtargetFeatures in llc/lli.

2005-09-01 21:38:21 +00:00

TargetSchedInfo.cpp

Convert tabs to spaces

2005-04-22 17:54:37 +00:00

TargetSubtarget.cpp

Eliminate all remaining tabs and trailing spaces.

2005-07-27 06:12:32 +00:00