Commit Graph

15 Commits

Author SHA1 Message Date
Juergen Ributzka 9622cdf4b9 [StackMap Liveness] Calling the base class' getAnalysisUsage method. NFCI.
Calling into the base class' getAnalysisUsage method after we did our pass
specific modifications. This shouldn't really matter since this is the last
pass in the pipeline anyways.

llvm-svn: 241536
2015-07-07 02:05:18 +00:00
Juergen Ributzka c111fcc0a0 [StackMap Liveness] No need to cache the MachineFunction. NFC.
Don't cache the MachineFunction in the pass and range'ify some loops.

llvm-svn: 241535
2015-07-07 02:05:15 +00:00
Benjamin Kramer 722ff28643 Internalize the StackMapLiveness pass.
No need to have its own header when it's not used anywhere. NFC.

llvm-svn: 233072
2015-03-24 13:20:54 +00:00
Benjamin Kramer b85d3756a6 Another set of missing raw_ostream.h. Still no functional change.
llvm-svn: 232993
2015-03-23 18:45:56 +00:00
David Blaikie 9f380a3ca0 Fix uses of reserved identifiers starting with an underscore followed by an uppercase letter
This covers essentially all of llvm's headers and libs. One or two weird
cases I wasn't sure were worth/appropriate to fix.

llvm-svn: 232394
2015-03-16 18:06:57 +00:00
Hal Finkel df87f9383b [StackMaps] Allow the target to pre-process the live-out mask
Some targets, PowerPC for example, have pseudo-registers (such as that used to
represent the rounding mode), that don't have DWARF register numbers or a
register class. These are used only for internal dependency tracking, and
should not appear in the recorded live-outs. This adds a callback allowing the
target to pre-process the live-out mask in order to remove these kinds of
registers so that the StackMaps code does not complain about them and/or
attempt to include them in the output.

This will be used by the PowerPC target in a future commit.

llvm-svn: 225805
2015-01-13 17:47:59 +00:00
Eric Christopher fc6de428c8 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.

llvm-svn: 214838
2014-08-05 02:39:49 +00:00
Eric Christopher d913448b38 Remove the TargetMachine forwards for TargetSubtargetInfo based
information and update all callers. No functional change.

llvm-svn: 214781
2014-08-04 21:25:23 +00:00
Juergen Ributzka 009bff223b [StackMaps] Enable patchpoint liveness analysis per default.
llvm-svn: 211817
2014-06-26 23:39:52 +00:00
Juergen Ributzka 14871f73bb [Stackmaps] Remove the liveness calculation for stackmap intrinsics.
There is no need to calculate the liveness information for stackmaps. The
liveness information is still available for the patchpoint intrinsic and
that is also the intended usage model.

Related to <rdar://problem/17473725>

llvm-svn: 211816
2014-06-26 23:39:44 +00:00
Chandler Carruth 1b9dde087e [Modules] Remove potential ODR violations by sinking the DEBUG_TYPE
define below all header includes in the lib/CodeGen/... tree. While the
current modules implementation doesn't check for this kind of ODR
violation yet, it is likely to grow support for it in the future. It
also removes one layer of macro pollution across all the included
headers.

Other sub-trees will follow.

llvm-svn: 206837
2014-04-22 02:02:50 +00:00
Andrew Trick 326c1f6804 Minor change to StackMapLiveness DEBUG output.
llvm-svn: 205656
2014-04-04 23:49:35 +00:00
Juergen Ributzka e82947539e [Stackmap] Liveness Analysis Pass
This optional register liveness analysis pass can be enabled with either
-enable-stackmap-liveness, -enable-patchpoint-liveness, or both. The pass
traverses each basic block in a machine function. For each basic block the
instructions are processed in reversed order and if a patchpoint or stackmap
instruction is encountered the current live-out register set is encoded as a
register mask and attached to the instruction.

Later on during stackmap generation the live-out register mask is processed and
also emitted as part of the stackmap.

This information is optional and intended for optimization purposes only. This
will enable a client of the stackmap to reason about the registers it can use
and which registers need to be preserved.

Reviewed by Andy

llvm-svn: 197317
2013-12-14 06:53:06 +00:00
Andrew Trick 7bcb0100df Revert "Liveness Analysis Pass"
This reverts commit r197254.

This was an accidental merge of Juergen's patch. It will be checked in
shortly, but wasn't meant to go in quite yet.

Conflicts:
	include/llvm/CodeGen/StackMaps.h
	lib/CodeGen/StackMaps.cpp
	test/CodeGen/X86/stackmap-liveness.ll

llvm-svn: 197260
2013-12-13 18:57:20 +00:00
Andrew Trick 8d6a658430 Liveness Analysis Pass
llvm-svn: 197254
2013-12-13 18:37:03 +00:00