[PATCH] Insert tbb/tbh optimization where previous jump table resided

[Tim Northover]

Hi Daniel,

The code change looks sensible, but I think the test could be made a bit clearer these days:


REPOSITORY
  rL LLVM

================
Comment at: test/CodeGen/Thumb2/constant-islands-jump-table.ll:45
@@ +44,3 @@
+  %d2 = phi i32 [%b1, %h1], [%a0, %h2]
+  %d3 = add i32 %d2, 8
+  %d4 = add i32 %d3, %d3
----------------
There's an @llvm.arm.space intrinsic now. It acts as an "instruction" of the precise size you specify. It's probably clearer and more efficient than putting in just the right number of real instructions.

http://reviews.llvm.org/D6621

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