[project @ 2004-01-09 12:36:54 by simonmar]

[ghc-hetmet.git] / ghc / compiler / nativeGen / NOTES

diff --git a/ghc/compiler/nativeGen/NOTES b/ghc/compiler/nativeGen/NOTES
index 83330ec..437e220 100644 (file)
--- a/ghc/compiler/nativeGen/NOTES
+++ b/ghc/compiler/nativeGen/NOTES
@@ -1,16 +1,21 @@
 
-Known bugs in nativeGen, 000124 (JRS)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-All these bugs are for x86; I don't know about sparc/alpha.
+Known bugs/issues in nativeGen, 000228 (JRS)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 -- absC -> stix translation for GET_TAG and in fact anything
    to do with the packed-halfword layout info itbl field is
    pretty dubious.  I think I have it fixed for big and little
    endian 32-bit, but it won't work at all on a 64 bit platform.
 
--- nofib/spectral/cvh_unboxing exposes some kind of spilling bug
-   (I think), since there are many references to registers %M229
-   etc, which I believe are dynamic registers which didn't get assigned
-   to real ones.
+-- There may or may not be bugs in some of the x86 insn selector 
+   code in MachCode.lhs.  I have checked all of it against the 
+   Rules of the Game (+ Rules of the game for Amodes) recorded in 
+   that file, but am not 100% convinced that it is all correct.
+   I think most of it is, tho.
+
+-- It won't compile on Solaris or Alphas because the insn selectors
+   are not up-to-date.
 
+-- NCG introduces a massive space leak; I think it generates all the
+   assembly code before printing any of it out (a depressingly 
+   familiar story ...).  Fixing this will await a working heap profiler.