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5 Commits

Author SHA1 Message Date
Andrew Trick 8523b16ff5 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 9cb20ac2e8 test/CodeGen/X86/red-zone.ll: Add explicit -mtriple=x86_64-linux. 
Redzone is not applicable on Win64.

llvm-svn: 126194
 2011-02-22 07:18:55 +00:00
Dan Gohman 40503396da Eliminate more uses of llvm-as and llvm-dis. 
llvm-svn: 81290
 2009-09-08 23:54:48 +00:00
Dan Gohman 2bebfc38af Change these tests to use function attributes rather than special llc 
command-line options.

llvm-svn: 78204
 2009-08-05 16:37:27 +00:00
Dan Gohman 8738997c11 Add a regression test for x86-64 red zone usage. 
llvm-svn: 63075
 2009-01-27 00:40:27 +00:00