Meta TODO list:
-1. Convert all instructions to use autogeneration for asm strings.
-2. Convert asmprinter to use lib/CodeGen/AsmPrinter for global init printing
- constant pool printing, etc.
-3. Create a new DAG -> DAG instruction selector, by adding patterns to the
+1. Create a new DAG -> DAG instruction selector, by adding patterns to the
instructions.
-4. profit!
-
-
-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
+2. ???
+3. profit!
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)
-
+* open code 64-bit shifts
* 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).
-
-$Date$
-