Sjoerd Meijer e690485141 [SelectionDAG] Codesize: don't expand SHIFT to SHIFT_PARTS ...

And instead just generate a libcall. My motivating example on ARM was a simple:
  
  shl i64 %A, %B

for which the code bloat is quite significant. For other targets that also
accept __int128/i128 such as AArch64 and X86, it is also beneficial for these
cases to generate a libcall when optimising for minsize. On these 64-bit targets,
the 64-bits shifts are of course unaffected because the SHIFT/SHIFT_PARTS
lowering operation action is not set to custom/expand.

Differential Revision: https://reviews.llvm.org/D57386



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@352736 91177308-0d34-0410-b5e6-96231b3b80d8

2019-01-31 08:07:30 +00:00

..

llvm

[SelectionDAG] Codesize: don't expand SHIFT to SHIFT_PARTS

2019-01-31 08:07:30 +00:00

llvm-c

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19 08:50:56 +00:00