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  1. Sep 28, 2011
    • Jim Grosbach's avatar
      ARM Thumb2 asm parsing [SU]XT[BH] without rotate but with .w. · c63af1b7
      Jim Grosbach authored 
      Add inst alias to handle these assembly forms. Add tests, too.

rdar://10178799

llvm-svn: 140647
      c63af1b7
    • Bill Wendling's avatar
      This is the start of the new SjLj EH preparation pass, which will replace the · 354ff9e3
      Bill Wendling authored 
      current IR-level pass.

The old SjLj EH pass has some problems, especially with the new EH model. Most
significantly, it violates some of the new restrictions the new model has. For
instance, the 'dispatch' table wants to jump to the landing pad, but we cannot
allow that because only an invoke's unwind edge can jump to a landing pad. This
requires us to mangle the code something awful. In addition, we need to keep the
now dead landingpad instructions around instead of CSE'ing them because the
DWARF emitter uses that information (they are dead because no control flow edge
will execute them - the control flow edge from an invoke's unwind is superceded
by the edge coming from the dispatch).

Basically, this pass belongs not at the IR level where SSA is king, but at the
code-gen level, where we have more flexibility.

llvm-svn: 140646
      354ff9e3
    • Akira Hatanaka's avatar
      Embed patterns in definitions of MFC1 and MTC1 instead of defining them outside · a5d18f2d
      Akira Hatanaka authored 
      of the instruction definitions using Pat<>.

llvm-svn: 140644
      a5d18f2d
  3. Sep 27, 2011
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