Commit Graph

13 Commits

Author SHA1 Message Date
Benjamin Kramer
3cdf75c5cf [SystemZ] Make operator bool explicit. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219069 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-04 22:44:35 +00:00
Eric Christopher
6035518e3b Have MachineFunction cache a pointer to the subtarget to make lookups
shorter/easier and have the DAG use that to do the same lookup. This
can be used in the future for TargetMachine based caching lookups from
the MachineFunction easily.

Update the MIPS subtarget switching machinery to update this pointer
at the same time it runs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214838 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-05 02:39:49 +00:00
Eric Christopher
9f85dccfc6 Remove the TargetMachine forwards for TargetSubtargetInfo based
information and update all callers. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214781 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-04 21:25:23 +00:00
Craig Topper
eda7f44b27 [C++11] Add 'override' keywords and remove 'virtual'. Additionally add 'final' and leave 'virtual' on some methods that are marked virtual without overriding anything and have no obvious overrides themselves.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207511 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-29 07:58:41 +00:00
Craig Topper
c848b1bbcf [C++] Use 'nullptr'. Target edition.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207197 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-25 05:30:21 +00:00
Chandler Carruth
42e8630239 [Modules] Fix potential ODR violations by sinking the DEBUG_TYPE
definition below all of the header #include lines, lib/Target/...
edition.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206842 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-22 02:41:26 +00:00
Richard Sandiford
abe768029b [SystemZ] Remove "virtual" from override methods
Also fix a couple of cases where "override" was missing.  No behavioural
change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203110 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-06 12:03:36 +00:00
Richard Sandiford
b653ed8545 [SystemZ] Use "for (auto" a bit
Just the simple cases for now.  There were a few knock-on changes of
MachineBasicBlock *s to MachineBasicBlock &s.  No functional change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203105 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-06 11:00:15 +00:00
Richard Sandiford
9a1cd05a3d [SystemZ] Update namespace formatting to match current guidelines
No functional change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203103 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-06 10:38:30 +00:00
Richard Sandiford
29e873ddb6 [SystemZ] Optimize floating-point comparisons with zero
This follows the same lines as the integer code.  In the end it seemed
easier to have a second 4-bit mask in TSFlags to specify the compare-like
CC values.  That eats one more TSFlags bit than adding a CCHasUnordered
would have done, but it feels more concise.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187883 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-07 11:10:06 +00:00
Richard Sandiford
9379557478 [SystemZ] Use BRCT and BRCTG to eliminate add-&-compare sequences
This patch just uses a peephole test for "add; compare; branch" sequences
within a single block.  The IR optimizers already convert loops to
decrement-and-branch-on-nonzero form in some cases, so even this
simplistic test triggers many times during a clang bootstrap and
projects/test-suite run.  It looks like there are still cases where we
need to more strongly prefer branches on nonzero though.  E.g. I saw a
case where a loop that started out with a check for 0 ended up with a
check for -1.  I'll try to look at that sometime.

I ended up adding the Reference class because MachineInstr::readsRegister()
doesn't check for subregisters (by design, as far as I could tell).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187723 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-05 11:23:46 +00:00
Richard Sandiford
9b05c709c6 [SystemZ] Use LOAD AND TEST to eliminate comparisons against zero
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187720 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-05 11:03:20 +00:00
Richard Sandiford
66fbb47818 [SystemZ] Split out comparison elimination into a separate pass
Perhaps predictably, doing comparison elimination on the fly during
SystemZLongBranch turned out to be a bad idea.  The next patches make
use of LOAD AND TEST and BRANCH ON COUNT, both of which require
changes to earlier instructions.

No functionality change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187718 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-05 10:58:53 +00:00