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5 Commits

Author SHA1 Message Date
Matt Arsenault a202538bfa AMDGPU: Remove error on calls for amdgcn 
Repurpose the -amdgpu-function-calls flag. Rather
than require it to emit a call, only use it to
run the always inline path or not.

llvm-svn: 310003
 2017-08-03 23:24:05 +00:00
Matt Arsenault 8e8f8f43b0 AMDGPU: Fix clobbering CSR VGPRs when spilling SGPR to it 
llvm-svn: 309783
 2017-08-02 01:52:45 +00:00
Matt Arsenault d1867c0345 AMDGPU: Don't place arguments in emergency stack slot 
When finding the fixed offsets for function arguments,
this needs to skip over the 4 bytes reserved for the
emergency stack slot.

llvm-svn: 309776
 2017-08-02 00:59:51 +00:00
Matt Arsenault acc5e82b0e DAG: Undo and->or combine with FrameIndexes 
This pattern shows up when lowering byval copies on AMDGPU.

The byval object access is split into 4-byte chunks, adding a
constant offset to the FixedStack base. When some of the offsets
turn into ors, this prevents combining the constant offsets.

This makes it not apparent that the object is there when matching
addressing modes, so it ends up using a scratch wave offset
relative access and the lengthy frame index expansion for that.

llvm-svn: 309775
 2017-08-02 00:43:42 +00:00
Matt Arsenault b62a4eb524 AMDGPU: Initial implementation of calls 
Includes a hack to fix the type selected for
the GlobalAddress of the function, which will be
fixed by changing the default datalayout to use
generic pointers for 0.

llvm-svn: 309732
 2017-08-01 19:54:18 +00:00