| commit | dc9a6a7dba43a473a6e317db5e8e5f29988a5fd5 | |
| author | Nemanja Ivanovic <nemanja.i.ibm@gmail.com> | |
| Tue, 17 Apr 2018 13:07:01 +0000 (17 13:07 +0000) | ||
| committer | Nemanja Ivanovic <nemanja.i.ibm@gmail.com> | |
| Tue, 17 Apr 2018 13:07:01 +0000 (17 13:07 +0000) | ||
| tree | 46fd2819666108192dda47231f889f60aeaa7a85 | treesnapshot (tar.gz zip) |
| parent | afb8c1fed21eb4848d86f2d28e9cb3afcfbb2656 | commitdiff |
[PowerPC] Mark the BDNZ intrinsic as NoDuplicate
Duplicating this intrinsic is not generally valid because it has the side-effect
of decrementing the CTR. Any passes that duplicate it would need to be taught to
keep the regions formed completely disjoint.
This patch should be NFC for typical uses as CTRLoops runs after the remaining
loop passes. It only affects situations where the loop passes are scheduled on
the IR after the codegen passes (as is the case with some JIT pipelines).
Fixes https://bugs.llvm.org/show_bug.cgi?id=37050
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330186 91177308-0d34-0410-b5e6-96231b3b80d8
Duplicating this intrinsic is not generally valid because it has the side-effect
of decrementing the CTR. Any passes that duplicate it would need to be taught to
keep the regions formed completely disjoint.
This patch should be NFC for typical uses as CTRLoops runs after the remaining
loop passes. It only affects situations where the loop passes are scheduled on
the IR after the codegen passes (as is the case with some JIT pipelines).
Fixes https://bugs.llvm.org/show_bug.cgi?id=37050
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@330186 91177308-0d34-0410-b5e6-96231b3b80d8
| include/llvm/IR/IntrinsicsPowerPC.td | diffblobblamehistory | |
| test/CodeGen/PowerPC/no-dup-of-bdnz.ll | [new file with mode: 0644] | blob |