-enable-x86-dag-isel -enable-x86-fastcc crash

[llvmbot]

Bugzilla Link	699
Resolution	FIXED
Resolved on	Feb 22, 2010 12:47
Version	trunk
OS	FreeBSD
Depends On	llvm/llvm-bugzilla-archive#711
Attachments	bugpoint reduced file
Reporter	LLVM Bugzilla Contributor

Extended Description

From the 'treeadd' benchmark in llvm-test

Crash occurs whether using the new isel or not.

llc -enable-x86-fastcc -f bugpoint.test.bc-NA6QC9 -o bugpoint.test.bc-NA6QC9.s

gcc ./bugpoint.safe.bc-LMANI1.cbe.c.so bugpoint.test.bc-NA6QC9.s -o
bugpoint.test.bc-NA6QC9.exe -Wl,-R.

bugpoint.test.bc-NA6QC9.exe 22

Adding -enable-x86-dag-isel has no effect

[lattner]

Hey Evan,

When you get a chance, can you look into this? Apparently -enable-x86-dag-isel -enable-x86-fastcc
cause Olden/treeadd to miscompile. Note that bugpoint won't help (because the C backend doesn't
understand fastcc), but treeadd is small so it should be theoretically easy to fix still :)

-Chris

[llvmbot]

Here is a list of programs that fail with llc-beta + --enable-x86-fastcc and do
not fail with llc.

Hopefully some of these are tiny and therefore easy to debug :)

2005-05-11-Popcount-ffs-fls
Puzzle
aha
allroots
bc
bh
bigfib
bintr
bisort
burg
cfrac
city
cjpeg
deriv1
deriv2
employ
encode
espresso
exptree
fhourstones
fourinarow
gs
hash
hbd
health
kc
ks
lambda
lists
main
make_dparser
mpeg2decode
mst
mybison
ofstream_ctor
pcompress2
perimeter
pifft
power
random
sgefa
shapes
sim
smg2000
spellcheck
toast
treeadd
treecc
tsp
voronoi
yacr2

[llvmbot]

*** Bug #1055 has been marked as a duplicate of this bug. ***

[lattner]

mentioned in issue llvm/llvm-bugzilla-archive#711