[PATCH] D30829: [Thumb1] combine ADDC/SUBC with a negative immediate

[Z. Zheng via Phabricator via llvm-commits]

zzheng added a comment.

This test case reproduce the problem (infinite compile time)

define i64 @f6(i64 %x, i64 %y) {
entry:

  %tmp1 = add i64 %y, -2147483648           ; <i64> [#uses=1]
  ret i64 %tmp1

}


Repository:
  rL LLVM

https://reviews.llvm.org/D30829