Commit Graph

6 Commits

Author SHA1 Message Date
Chad Rosier
0a63b6ac79 [fast-isel] Add the -verify-machineinstrs to these test cases. The remaining
test cases require fixes to fast-isel before the verifier can be enabled.
Part of rdar://12594152

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168233 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-17 00:42:06 +00:00
Jakob Stoklund Olesen
7255a4e133 Reapply r146997, "Heed spill slot alignment on ARM."
Now that canRealignStack() understands frozen reserved registers, it is
safe to use it for aligned spill instructions.

It will only return true if the registers reserved at the beginning of
register allocation allow for dynamic stack realignment.

<rdar://problem/10625436>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147579 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-05 00:26:57 +00:00
Jakob Stoklund Olesen
6d5b7cc235 Revert r146997, "Heed spill slot alignment on ARM."
This patch caused a miscompilation of oggenc because a frame pointer was
suddenly needed halfway through register allocation.

<rdar://problem/10625436>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147487 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-03 22:34:35 +00:00
Jakob Stoklund Olesen
52346e964f Heed spill slot alignment on ARM.
Use the spill slot alignment as well as the local variable alignment to
determine when the stack needs to be realigned. This works now that the
ARM target can always realign the stack by using a base pointer.

Still respect the ARMBaseRegisterInfo::canRealignStack() function
vetoing a realigned stack.  Don't use aligned spill code in that case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146997 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-20 22:15:04 +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
Chad Rosier
ae6f2cb1fc If fast-isel fails, remove dead instructions generated during the failed
attempt.  

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145425 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-29 19:40:47 +00:00