Re-commit r289955: [X86] Fold (setcc (cmp (atomic_load_add x, -C) C), COND) to (setcc (LADD x, -C), COND) (PR31367)
This was reverted because it would miscompile code where the cmp had
multiple uses. That was due to a deficiency in the existing code, which
was fixed in r291630 (see the PR for details).
This re-commit includes an extra test for the kind of code that got
miscompiled: @test_sub_1_setcc_jcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291640
91177308-0d34-0410-b5e6-
96231b3b80d8
projects / llvm / commit