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Author SHA1 Message Date
Jakob Stoklund Olesen 866908c42c Allow overlaps between virtreg and physreg live ranges. 
The RegisterCoalescer understands overlapping live ranges where one
register is defined as a copy of the other. With this change, register
allocators using LiveRegMatrix can do the same, at least for copies
between physical and virtual registers.

When a physreg is defined by a copy from a virtreg, allow those live
ranges to overlap:

  %CL<def> = COPY %vreg11:sub_8bit; GR32_ABCD:%vreg11
  %vreg13<def,tied1> = SAR32rCL %vreg13<tied0>, %CL<imp-use,kill>

We can assign %vreg11 to %ECX, overlapping the live range of %CL.

llvm-svn: 163336
 2012-09-06 18:15:23 +00:00
Rafael Espindola 55d1145bd5 Use a base register instead of an index register with the local dynamic model. 
Fixes pr13048.

llvm-svn: 158158
 2012-06-07 18:39:19 +00:00
Hans Wennborg 789acfb63d Implement the local-dynamic TLS model for x86 (PR3985) 
This implements codegen support for accesses to thread-local variables
using the local-dynamic model, and adds a clean-up pass so that the base
address for the TLS block can be re-used between local-dynamic access on
an execution path.

llvm-svn: 157818
 2012-06-01 16:27:21 +00:00
Rafael Espindola 5d882894d8 Lower TLS_addr32 and TLS_addr64. 
llvm-svn: 120225
 2010-11-27 20:43:02 +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
Chris Lattner 6eceb7c85d rename test 
llvm-svn: 78441
 2009-08-07 23:57:30 +00:00