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11 Commits

Author SHA1 Message Date
Juergen Ributzka 9ed985baad [Stackmap] Allow WebKit_JS calling convention to store 4 byte sized and aligned arguments. 
This allows the WebKit_JS calling convention to perform partial writes on a 4
byte granularity to stack slots.

llvm-svn: 197431
 2013-12-16 22:05:32 +00:00
Juergen Ributzka b1612c18ab [Stackmap] The first integer argument is passed in register for the WebKit_JS calling convention. 
Pass the first integer argument (callee) in register to optimize inline caches.

llvm-svn: 197416
 2013-12-16 19:53:31 +00:00
Andrew Trick e8cba373a3 Grow the stackmap/patchpoint format to hold 64-bit IDs. 
llvm-svn: 197255
 2013-12-13 18:37:10 +00:00
Juergen Ributzka 17e0d9ee6c [Stackmap] Emit multi-byte nops for X86. 
llvm-svn: 196334
 2013-12-04 00:39:08 +00:00
Andrew Trick 4f0794fd47 Platform proof a test case. 
llvm-svn: 194788
 2013-11-15 05:52:56 +00:00
Andrew Trick 561f2218e0 Minor extension to llvm.experimental.patchpoint: don't require a call. 
If a null call target is provided, don't emit a dummy call. This
allows the runtime to reserve as little nop space as it needs without
the requirement of emitting a call.

llvm-svn: 194676
 2013-11-14 06:54:10 +00:00
Juergen Ributzka 87ed906b2e [Stackmap] Materialize the jump address within the patchpoint noop slide. 
This patch moves the jump address materialization inside the noop slide. This
enables patching of the materialization itself or its complete removal. This
patch also adds the ability to define scratch registers that can be used safely
by the code called from the patchpoint intrinsic. At least one scratch register
is required, because that one is used for the materialization of the jump
address. This patch depends on D2009.

Differential Revision: http://llvm-reviews.chandlerc.com/D2074

Reviewed by Andy

llvm-svn: 194306
 2013-11-09 01:51:33 +00:00
Andrew Trick 6664df12fb Slightly change the way stackmap and patchpoint intrinsics are lowered. 
MorphNodeTo is not safe to call during DAG building. It eagerly
deletes dependent DAG nodes which invalidates the NodeMap. We could
expose a safe interface for morphing nodes, but I don't think it's
worth it. Just create a new MachineNode and replaceAllUsesWith.

My understaning of the SD design has been that we want to support
early target opcode selection. That isn't very well supported, but
generally works. It seems reasonable to rely on this feature even if
it isn't widely used.

llvm-svn: 194102
 2013-11-05 22:44:04 +00:00
Andrew Trick f990411256 These test cases for experimental features are a bit too darwin-specific still. Use a triple. 
llvm-svn: 193820
 2013-10-31 22:46:51 +00:00
Andrew Trick a3a11dedca Add new calling convention for WebKit Java Script. 
llvm-svn: 193812
 2013-10-31 22:12:01 +00:00
Andrew Trick 153ebe6d2a Add support for stack map generation in the X86 backend. 
Originally implemented by Lang Hames.

llvm-svn: 193811
 2013-10-31 22:11:56 +00:00