[PATCH] D113287: [WIP] [SeparateConstOffsetFromGEP] Add an option to enable GEP lowering
Djordje Todorovic via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Nov 5 08:18:13 PDT 2021
djtodoro created this revision.
djtodoro added a project: LLVM.
Herald added a subscriber: hiraditya.
djtodoro requested review of this revision.
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This could be useful for testing of the SeparateConstOffsetFromGEP Pass.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D113287
Files:
llvm/lib/Transforms/Scalar/SeparateConstOffsetFromGEP.cpp
Index: llvm/lib/Transforms/Scalar/SeparateConstOffsetFromGEP.cpp
===================================================================
--- llvm/lib/Transforms/Scalar/SeparateConstOffsetFromGEP.cpp
+++ llvm/lib/Transforms/Scalar/SeparateConstOffsetFromGEP.cpp
@@ -212,6 +212,9 @@
cl::desc("Verify this pass produces no dead code"),
cl::Hidden);
+static cl::opt<bool> LowerGEPOpt("lower-gep", cl::init(false),
+ cl::desc("Enable GEP lowering"), cl::Hidden);
+
namespace {
/// A helper class for separating a constant offset from a GEP index.
@@ -1150,6 +1153,9 @@
if (DisableSeparateConstOffsetFromGEP)
return false;
+ if (LowerGEPOpt)
+ LowerGEP = true;
+
auto *DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
auto *SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
auto *LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
@@ -1165,6 +1171,9 @@
if (DisableSeparateConstOffsetFromGEP)
return false;
+ if (LowerGEPOpt)
+ LowerGEP = true;
+
DL = &F.getParent()->getDataLayout();
bool Changed = false;
for (BasicBlock &B : F) {
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