[PATCH] D35292: [SLPVectorizer] Add propagateIRFlagsWithOp() function to propagate IRFlags for specific Operation
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Wed Jul 19 03:04:07 PDT 2017
This revision was automatically updated to reflect the committed changes.
Closed by commit rL308428: [LoopUtils] Add an extra parameter OpValue to propagateIRFlags function, (authored by dinar).
Changed prior to commit:
https://reviews.llvm.org/D35292?vs=106611&id=107272#toc
Repository:
rL LLVM
https://reviews.llvm.org/D35292
Files:
llvm/trunk/include/llvm/Transforms/Utils/LoopUtils.h
llvm/trunk/lib/Transforms/Utils/LoopUtils.cpp
Index: llvm/trunk/include/llvm/Transforms/Utils/LoopUtils.h
===================================================================
--- llvm/trunk/include/llvm/Transforms/Utils/LoopUtils.h
+++ llvm/trunk/include/llvm/Transforms/Utils/LoopUtils.h
@@ -531,8 +531,10 @@
/// Get the intersection (logical and) of all of the potential IR flags
/// of each scalar operation (VL) that will be converted into a vector (I).
+/// If OpValue is non-null, we only consider operations similar to OpValue
+/// when intersecting.
/// Flag set: NSW, NUW, exact, and all of fast-math.
-void propagateIRFlags(Value *I, ArrayRef<Value *> VL);
+void propagateIRFlags(Value *I, ArrayRef<Value *> VL, Value *OpValue = nullptr);
} // end namespace llvm
Index: llvm/trunk/lib/Transforms/Utils/LoopUtils.cpp
===================================================================
--- llvm/trunk/lib/Transforms/Utils/LoopUtils.cpp
+++ llvm/trunk/lib/Transforms/Utils/LoopUtils.cpp
@@ -1376,16 +1376,21 @@
}
}
-void llvm::propagateIRFlags(Value *I, ArrayRef<Value *> VL) {
- if (auto *VecOp = dyn_cast<Instruction>(I)) {
- if (auto *I0 = dyn_cast<Instruction>(VL[0])) {
- // VecOVp is initialized to the 0th scalar, so start counting from index
- // '1'.
- VecOp->copyIRFlags(I0);
- for (int i = 1, e = VL.size(); i < e; ++i) {
- if (auto *Scalar = dyn_cast<Instruction>(VL[i]))
- VecOp->andIRFlags(Scalar);
- }
- }
+void llvm::propagateIRFlags(Value *I, ArrayRef<Value *> VL, Value *OpValue) {
+ auto *VecOp = dyn_cast<Instruction>(I);
+ if (!VecOp)
+ return;
+ auto *Intersection = (OpValue == nullptr) ? dyn_cast<Instruction>(VL[0])
+ : dyn_cast<Instruction>(OpValue);
+ if (!Intersection)
+ return;
+ const unsigned Opcode = Intersection->getOpcode();
+ VecOp->copyIRFlags(Intersection);
+ for (auto *V : VL) {
+ auto *Instr = dyn_cast<Instruction>(V);
+ if (!Instr)
+ continue;
+ if (OpValue == nullptr || Opcode == Instr->getOpcode())
+ VecOp->andIRFlags(V);
}
}
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