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e4d5c441e0
using Function::arg_{iterator|begin|end}. Likewise Module::g* -> Module::global_*.
This patch is contributed by Gabor Greif, thanks!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20597 91177308-0d34-0410-b5e6-96231b3b80d8
SparcV8 backend skeleton
------------------------
This directory houses a 32-bit SPARC V8 backend employing an expander-based
instruction selector. It is not yet functionally complete. Watch
this space for more news coming soon!
Current expected test failures
------------------------------
Here are the currently-expected SingleSource failures for V8
(Some C++ programs are crashing in libstdc++ at the moment;
I'm not sure why.)
(llc) SingleSource/Regression/C++/EH/exception_spec_test
(llc) SingleSource/Regression/C++/EH/throw_rethrow_test
Here are the currently-expected MultiSource failures for V8:
(llc,cbe) MultiSource/Applications/d/make_dparser
(llc,cbe) MultiSource/Applications/hexxagon
(llc) MultiSource/Benchmarks/Fhourstones
(llc,cbe) MultiSource/Benchmarks/McCat/03-testtrie
(llc) MultiSource/Benchmarks/McCat/18-imp
(llc,cbe) MultiSource/Benchmarks/Prolangs-C/bison/mybison
(llc,cbe) MultiSource/Benchmarks/Prolangs-C/fixoutput
(llc,cbe) MultiSource/Benchmarks/Prolangs-C/gnugo
(llc,cbe) MultiSource/Benchmarks/Prolangs-C/plot2fig
(llc,cbe) MultiSource/Benchmarks/Ptrdist/anagram
(llc,cbe) MultiSource/Benchmarks/FreeBench/analyzer
* DANGER * analyzer will run the machine out of VM
(I don't know whether the following fail in cbe:)
(llc) MultiSource/Benchmarks/FreeBench/distray
(llc) MultiSource/Benchmarks/FreeBench/fourinarow
(llc) MultiSource/Benchmarks/FreeBench/pifft
(llc) MultiSource/Benchmarks/MallocBench/gs
(llc) MultiSource/Benchmarks/Prolangs-C++/deriv1
(llc) MultiSource/Benchmarks/Prolangs-C++/deriv2
Known SPEC failures for V8 (probably not an exhaustive list):
(llc) 134.perl
(llc) 177.mesa
(llc) 188.ammp -- FPMover bug?
(llc) 256.bzip2
(llc,cbe) 130.li
(native,llc,cbe) 126.gcc
(native,llc,cbe) 255.vortex
To-do
-----
* support shl on longs (fourinarow needs this)
* support casting 64-bit integers to FP types (fhourstones needs this)
* support FP rem (call fmod)
* Keep the address of the constant pool in a register instead of forming its
address all of the time.
* Change code like this:
or %o0, %lo(.CPI_main_0), %o0
ld [%o0+0], %o0
into:
ld [%o0+%lo(.CPI_main_0)], %o0
for constant pool access.
* We can fold small constant offsets into the %hi/%lo references to constant
pool addresses as well.
* Directly support select instructions, and fold setcc instructions into them
where possible. I think this is what afflicts the inner loop of Olden/tsp
(hot block = tsp():no_exit.1.i, overall GCC/LLC = 0.03).
* Generate fsqrtd for calls to sqrt() (~ 4% speedup on Olden/tsp).
$Date$