Commit Graph

7 Commits

Author SHA1 Message Date
JF Bastien
f567a6d39b Enable FastISel on ARM for Linux and NaCl
FastISel was only enabled for iOS ARM and Thumb2, this patch enables it
for ARM (not Thumb2) on Linux and NaCl.

Thumb2 support needs a bit more work, mainly around register class
restrictions.

The patch punts to SelectionDAG when doing TLS relocation on non-Darwin
targets. I will fix this and other FastISel-to-SelectionDAG failures in
a separate patch.

The patch also forces FastISel to retain frame pointers: iOS always
keeps them for backtracking (so emitted code won't change because of
this), but Linux was getting much worse code that was incorrect when
using big frames (such as test-suite's lencod). I'll also fix this in a
later patch, it will probably require a peephole so that FastISel
doesn't rematerialize frame pointers back-to-back.

The test changes are straightforward, similar to:
  http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20130513/174279.html
They also add a vararg test that got dropped in that change.

I ran all of test-suite on A15 hardware with --optimize-option=-O0 and
all the tests pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182877 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-29 20:38:10 +00:00
Chad Rosier
0ac754f6f4 [fast-isel] Address Eli's comments for r152847. Specifically, add a test case
and still allow immediate encoding, just not with cmn.
rdar://11038907


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152869 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-15 22:54:20 +00:00
Evan Cheng
afff941211 ARM target code clean up. Check for iOS, not Darwin where it makes sense.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146981 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-20 18:26:50 +00:00
Jim Grosbach
ffc658b056 ARM VLDR/VSTR instructions don't need a size suffix.
Canonicallize on the non-suffixed form, but continue to accept assembly that
has any correctly sized type suffix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144583 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14 23:03:21 +00:00
Chad Rosier
6cba97c555 For immediate encodings of icmp, zero or sign extend first. Then
determine if the value is negative and flip the sign accordingly.
rdar://10422026

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144258 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-10 01:30:39 +00:00
Chad Rosier
a7a996b98d Use REs to remove dependencies on the register allocation order.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144209 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-09 20:06:13 +00:00
Chad Rosier
2f2fe417f9 Add support for encoding immediates in icmp and fcmp. Hopefully, this will
remove a fair number of unnecessary materialized constants.
rdar://10412592


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144163 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-09 03:22:02 +00:00