Change if (cond) ... else llvm_unreachable("text") to assert(cond && "text") ...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185392 91177308-0d34-0410-b5e6-96231b3b80d8
Remove floating point computations form SpillPlacement.cpp.

Patch by Benjamin Kramer!

Use the BlockFrequency class instead of floats in the Hopfield network
computations. This rescales the node Bias field from a [-2;2] float
range to two block frequencies BiasN and BiasP pulling in opposite
directions. This construct has a more predictable behavior when block
frequencies saturate.

The per-node scaling factors are no longer necessary, assuming the block
frequencies around a bundle are consistent.

This patch can cause the register allocator to make different spilling
decisions. The differences should be small.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185393 91177308-0d34-0410-b5e6-96231b3b80d8

[PowerPC] Add support for TLS data relocations

This adds support for TLS data relocations and modifiers:
       .quad target@dtpmod
       .quad target@tprel
       .quad target@dtprel
Currently exploited by the asm parser only.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185394 91177308-0d34-0410-b5e6-96231b3b80d8
Tweak some comments that referred to the old bias computations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185395 91177308-0d34-0410-b5e6-96231b3b80d8
Fix up some asserts that are within an if statement.  This removes the need
for assert(0 && "text").


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185396 91177308-0d34-0410-b5e6-96231b3b80d8
[APFloat] Ensure that we can properly parse strings that do not have null terminators.

rdar://14323230

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185397 91177308-0d34-0410-b5e6-96231b3b80d8
PR14728: DebugInfo: TLS variables with -gsplit-dwarf

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185398 91177308-0d34-0410-b5e6-96231b3b80d8