[X86] X86DAGToDAGISel::matchBitExtract(): pattern b: truncation awareness

Summary:
(Not so) boringly identical to pattern a (D62786)
Not yet sure how do deal with the last pattern c.

Reviewers: RKSimon, craig.topper, spatel

Reviewed By: RKSimon

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D62793

llvm-svn: 364418
5 files changed
tree: 1bd3ed8a5065bc72543b63d3523d87210bd487e3
  1. .github/
  2. clang/
  3. clang-tools-extra/
  4. compiler-rt/
  5. debuginfo-tests/
  6. libclc/
  7. libcxx/
  8. libcxxabi/
  9. libunwind/
  10. lld/
  11. lldb/
  12. llgo/
  13. llvm/
  14. openmp/
  15. parallel-libs/
  16. polly/
  17. pstl/
  18. .arcconfig
  19. .clang-format
  20. .clang-tidy
  21. .gitignore
  22. README.md
README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.