[PATCH] D151945: Introduce G_CONSTANT_FOLD_BARRIER and use it to prevent constant folding hoisted constants.

[Amara Emerson via Phabricator via llvm-commits]

aemerson added inline comments.


================
Comment at: llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp:85
+  getActionDefinitionsBuilder(
+      {G_IMPLICIT_DEF, G_FREEZE, G_CONSTANT_FOLD_BARRIER})
       .legalFor({p0, s8, s16, s32, s64})
----------------
Pierre-vh wrote:
> Will other targets (e.g. AMDGPU) need this?
Maybe, but I'd like to leave that to AMDGPU maintainers to decide how to legalize this. I'm not even sure of constant hoisting is used for AMDGPU.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D151945/new/

https://reviews.llvm.org/D151945