[llvm] d02a40b - [IndVars][NFC] Separate creation of condition and replacement in foldExit
Max Kazantsev via llvm-commits
llvm-commits at lists.llvm.org
Mon Dec 12 03:00:15 PST 2022
Author: Max Kazantsev
Date: 2022-12-12T17:59:45+07:00
New Revision: d02a40b559320e8d37ec2c80a6575ce138c3c55b
URL: https://github.com/llvm/llvm-project/commit/d02a40b559320e8d37ec2c80a6575ce138c3c55b
DIFF: https://github.com/llvm/llvm-project/commit/d02a40b559320e8d37ec2c80a6575ce138c3c55b.diff
LOG: [IndVars][NFC] Separate creation of condition and replacement in foldExit
It is a preparatory step for further improvements.
Added:
Modified:
llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
Removed:
################################################################################
diff --git a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
index 9d666f76cb0c..55a22ae1d642 100644
--- a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
+++ b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
@@ -1298,13 +1298,19 @@ static void replaceExitCond(BranchInst *BI, Value *NewCond,
DeadInsts.emplace_back(OldCond);
}
-static void foldExit(const Loop *L, BasicBlock *ExitingBB, bool IsTaken,
- SmallVectorImpl<WeakTrackingVH> &DeadInsts) {
+static Constant *createFoldedExitCond(const Loop *L, BasicBlock *ExitingBB,
+ bool IsTaken) {
BranchInst *BI = cast<BranchInst>(ExitingBB->getTerminator());
bool ExitIfTrue = !L->contains(*succ_begin(ExitingBB));
auto *OldCond = BI->getCondition();
- auto *NewCond =
- ConstantInt::get(OldCond->getType(), IsTaken ? ExitIfTrue : !ExitIfTrue);
+ return ConstantInt::get(OldCond->getType(),
+ IsTaken ? ExitIfTrue : !ExitIfTrue);
+}
+
+static void foldExit(const Loop *L, BasicBlock *ExitingBB, bool IsTaken,
+ SmallVectorImpl<WeakTrackingVH> &DeadInsts) {
+ BranchInst *BI = cast<BranchInst>(ExitingBB->getTerminator());
+ auto *NewCond = createFoldedExitCond(L, ExitingBB, IsTaken);
replaceExitCond(BI, NewCond, DeadInsts);
}
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