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4 Commits

Author SHA1 Message Date
Andrew Trick
d09b64fc25 Instruction scheduling itinerary for Intel Atom. 
Adds an instruction itinerary to all x86 instructions, giving each a default latency of 1, using the InstrItinClass IIC_DEFAULT.

Sets specific latencies for Atom for the instructions in files X86InstrCMovSetCC.td, X86InstrArithmetic.td, X86InstrControl.td, and X86InstrShiftRotate.td. The Atom latencies for the remainder of the x86 instructions will be set in subsequent patches.

Adds a test to verify that the scheduler is working.

Also changes the scheduling preference to "Hybrid" for i386 Atom, while leaving x86_64 as ILP.

Patch by Preston Gurd!

llvm-svn: 149558
 2012-02-01 23:20:51 +00:00
NAKAMURA Takumi
fe84f8672a Target/X86: Tweak va_arg for Win64 not to miss taking va_start when number of fixed args > 4. 
llvm-svn: 127328
 2011-03-09 11:33:15 +00:00
NAKAMURA Takumi
07a84f5950 Target/X86: Tweak allocating shadow area (aka home) on Win64. It must be enough for caller to allocate one. 
llvm-svn: 124949
 2011-02-05 15:11:32 +00:00
Anton Korobeynikov
f1acea8615 va_args support for Win64. 
Patch by Cameron!

llvm-svn: 115480
 2010-10-03 22:52:07 +00:00