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-rw-r--r--llvm/include/llvm/IR/IRBuilder.h22
-rw-r--r--llvm/lib/IR/IRBuilder.cpp32
-rw-r--r--llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp80
-rw-r--r--llvm/test/Transforms/LoopIdiom/unordered-atomic-memcpy.ll451
4 files changed, 15 insertions, 570 deletions
diff --git a/llvm/include/llvm/IR/IRBuilder.h b/llvm/include/llvm/IR/IRBuilder.h
index 3c0ef66431d..9d4c13c29f6 100644
--- a/llvm/include/llvm/IR/IRBuilder.h
+++ b/llvm/include/llvm/IR/IRBuilder.h
@@ -435,28 +435,6 @@ public:
MDNode *ScopeTag = nullptr,
MDNode *NoAliasTag = nullptr);
- /// \brief Create and insert an atomic memcpy between the specified
- /// pointers.
- ///
- /// If the pointers aren't i8*, they will be converted. If a TBAA tag is
- /// specified, it will be added to the instruction. Likewise with alias.scope
- /// and noalias tags.
- CallInst *CreateElementAtomicMemCpy(
- Value *Dst, Value *Src, uint64_t NumElements, uint32_t ElementSize,
- MDNode *TBAATag = nullptr, MDNode *TBAAStructTag = nullptr,
- MDNode *ScopeTag = nullptr, MDNode *NoAliasTag = nullptr) {
- return CreateElementAtomicMemCpy(Dst, Src, getInt64(NumElements),
- ElementSize, TBAATag, TBAAStructTag,
- ScopeTag, NoAliasTag);
- }
-
- CallInst *CreateElementAtomicMemCpy(Value *Dst, Value *Src,
- Value *NumElements, uint32_t ElementSize,
- MDNode *TBAATag = nullptr,
- MDNode *TBAAStructTag = nullptr,
- MDNode *ScopeTag = nullptr,
- MDNode *NoAliasTag = nullptr);
-
/// \brief Create and insert a memmove between the specified
/// pointers.
///
diff --git a/llvm/lib/IR/IRBuilder.cpp b/llvm/lib/IR/IRBuilder.cpp
index ee219339572..7572d0c6b3b 100644
--- a/llvm/lib/IR/IRBuilder.cpp
+++ b/llvm/lib/IR/IRBuilder.cpp
@@ -134,38 +134,6 @@ CreateMemCpy(Value *Dst, Value *Src, Value *Size, unsigned Align,
return CI;
}
-CallInst *IRBuilderBase::CreateElementAtomicMemCpy(
- Value *Dst, Value *Src, Value *NumElements, uint32_t ElementSize,
- MDNode *TBAATag, MDNode *TBAAStructTag, MDNode *ScopeTag,
- MDNode *NoAliasTag) {
- Dst = getCastedInt8PtrValue(Dst);
- Src = getCastedInt8PtrValue(Src);
-
- Value *Ops[] = {Dst, Src, NumElements, getInt32(ElementSize)};
- Type *Tys[] = {Dst->getType(), Src->getType()};
- Module *M = BB->getParent()->getParent();
- Value *TheFn =
- Intrinsic::getDeclaration(M, Intrinsic::memcpy_element_atomic, Tys);
-
- CallInst *CI = createCallHelper(TheFn, Ops, this);
-
- // Set the TBAA info if present.
- if (TBAATag)
- CI->setMetadata(LLVMContext::MD_tbaa, TBAATag);
-
- // Set the TBAA Struct info if present.
- if (TBAAStructTag)
- CI->setMetadata(LLVMContext::MD_tbaa_struct, TBAAStructTag);
-
- if (ScopeTag)
- CI->setMetadata(LLVMContext::MD_alias_scope, ScopeTag);
-
- if (NoAliasTag)
- CI->setMetadata(LLVMContext::MD_noalias, NoAliasTag);
-
- return CI;
-}
-
CallInst *IRBuilderBase::
CreateMemMove(Value *Dst, Value *Src, Value *Size, unsigned Align,
bool isVolatile, MDNode *TBAATag, MDNode *ScopeTag,
diff --git a/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp b/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
index ebd6f1ee2a3..c6a05ecbd0b 100644
--- a/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
@@ -52,7 +52,6 @@
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/Analysis/ValueTracking.h"
-#include "llvm/CodeGen/RuntimeLibcalls.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Dominators.h"
#include "llvm/IR/IRBuilder.h"
@@ -117,7 +116,6 @@ private:
Memset,
MemsetPattern,
Memcpy,
- UnorderedAtomicMemcpy,
DontUse // Dummy retval never to be used. Allows catching errors in retval
// handling.
};
@@ -355,12 +353,8 @@ static Constant *getMemSetPatternValue(Value *V, const DataLayout *DL) {
LoopIdiomRecognize::LegalStoreKind
LoopIdiomRecognize::isLegalStore(StoreInst *SI) {
-
// Don't touch volatile stores.
- if (SI->isVolatile())
- return LegalStoreKind::None;
- // We only want simple or unordered-atomic stores.
- if (!SI->isUnordered())
+ if (!SI->isSimple())
return LegalStoreKind::None;
// Don't convert stores of non-integral pointer types to memsets (which stores
@@ -401,18 +395,15 @@ LoopIdiomRecognize::isLegalStore(StoreInst *SI) {
Value *SplatValue = isBytewiseValue(StoredVal);
Constant *PatternValue = nullptr;
- // Note: memset and memset_pattern on unordered-atomic is yet not supported
- bool UnorderedAtomic = SI->isUnordered() && !SI->isSimple();
-
// If we're allowed to form a memset, and the stored value would be
// acceptable for memset, use it.
- if (!UnorderedAtomic && HasMemset && SplatValue &&
+ if (HasMemset && SplatValue &&
// Verify that the stored value is loop invariant. If not, we can't
// promote the memset.
CurLoop->isLoopInvariant(SplatValue)) {
// It looks like we can use SplatValue.
return LegalStoreKind::Memset;
- } else if (!UnorderedAtomic && HasMemsetPattern &&
+ } else if (HasMemsetPattern &&
// Don't create memset_pattern16s with address spaces.
StorePtr->getType()->getPointerAddressSpace() == 0 &&
(PatternValue = getMemSetPatternValue(StoredVal, DL))) {
@@ -431,12 +422,7 @@ LoopIdiomRecognize::isLegalStore(StoreInst *SI) {
// The store must be feeding a non-volatile load.
LoadInst *LI = dyn_cast<LoadInst>(SI->getValueOperand());
-
- // Only allow non-volatile loads
- if (!LI || LI->isVolatile())
- return LegalStoreKind::None;
- // Only allow simple or unordered-atomic loads
- if (!LI->isUnordered())
+ if (!LI || !LI->isSimple())
return LegalStoreKind::None;
// See if the pointer expression is an AddRec like {base,+,1} on the current
@@ -452,9 +438,7 @@ LoopIdiomRecognize::isLegalStore(StoreInst *SI) {
return LegalStoreKind::None;
// Success. This store can be converted into a memcpy.
- UnorderedAtomic = UnorderedAtomic || LI->isAtomic();
- return UnorderedAtomic ? LegalStoreKind::UnorderedAtomicMemcpy
- : LegalStoreKind::Memcpy;
+ return LegalStoreKind::Memcpy;
}
// This store can't be transformed into a memset/memcpy.
return LegalStoreKind::None;
@@ -485,7 +469,6 @@ void LoopIdiomRecognize::collectStores(BasicBlock *BB) {
StoreRefsForMemsetPattern[Ptr].push_back(SI);
} break;
case LegalStoreKind::Memcpy:
- case LegalStoreKind::UnorderedAtomicMemcpy:
StoreRefsForMemcpy.push_back(SI);
break;
default:
@@ -899,7 +882,7 @@ bool LoopIdiomRecognize::processLoopStridedStore(
/// for (i) A[i] = B[i];
bool LoopIdiomRecognize::processLoopStoreOfLoopLoad(StoreInst *SI,
const SCEV *BECount) {
- assert(SI->isUnordered() && "Expected only non-volatile non-ordered stores.");
+ assert(SI->isSimple() && "Expected only non-volatile stores.");
Value *StorePtr = SI->getPointerOperand();
const SCEVAddRecExpr *StoreEv = cast<SCEVAddRecExpr>(SE->getSCEV(StorePtr));
@@ -909,7 +892,7 @@ bool LoopIdiomRecognize::processLoopStoreOfLoopLoad(StoreInst *SI,
// The store must be feeding a non-volatile load.
LoadInst *LI = cast<LoadInst>(SI->getValueOperand());
- assert(LI->isUnordered() && "Expected only non-volatile non-ordered loads.");
+ assert(LI->isSimple() && "Expected only non-volatile stores.");
// See if the pointer expression is an AddRec like {base,+,1} on the current
// loop, which indicates a strided load. If we have something else, it's a
@@ -983,49 +966,16 @@ bool LoopIdiomRecognize::processLoopStoreOfLoopLoad(StoreInst *SI,
const SCEV *NumBytesS =
SE->getAddExpr(BECount, SE->getOne(IntPtrTy), SCEV::FlagNUW);
+ if (StoreSize != 1)
+ NumBytesS = SE->getMulExpr(NumBytesS, SE->getConstant(IntPtrTy, StoreSize),
+ SCEV::FlagNUW);
- unsigned Align = std::min(SI->getAlignment(), LI->getAlignment());
- CallInst *NewCall = nullptr;
- // Check whether to generate an unordered atomic memcpy:
- // If the load or store are atomic, then they must neccessarily be unordered
- // by previous checks.
- if (!SI->isAtomic() && !LI->isAtomic()) {
- if (StoreSize != 1)
- NumBytesS = SE->getMulExpr(
- NumBytesS, SE->getConstant(IntPtrTy, StoreSize), SCEV::FlagNUW);
-
- Value *NumBytes =
- Expander.expandCodeFor(NumBytesS, IntPtrTy, Preheader->getTerminator());
-
- NewCall = Builder.CreateMemCpy(StoreBasePtr, LoadBasePtr, NumBytes, Align);
- } else {
- // We cannot allow unaligned ops for unordered load/store, so reject
- // anything where the alignment isn't at least the element size.
- if (Align < StoreSize)
- return false;
-
- // If the element.atomic memcpy is not lowered into explicit
- // loads/stores later, then it will be lowered into an element-size
- // specific lib call. If the lib call doesn't exist for our store size, then
- // we shouldn't generate the memcpy.
- if (RTLIB::UNKNOWN_LIBCALL == RTLIB::getMEMCPY_ELEMENT_ATOMIC(StoreSize))
- return false;
+ Value *NumBytes =
+ Expander.expandCodeFor(NumBytesS, IntPtrTy, Preheader->getTerminator());
- Value *NumElements =
- Expander.expandCodeFor(NumBytesS, IntPtrTy, Preheader->getTerminator());
-
- NewCall = Builder.CreateElementAtomicMemCpy(StoreBasePtr, LoadBasePtr,
- NumElements, StoreSize);
- // Propagate alignment info onto the pointer args. Note that unordered
- // atomic loads/stores are *required* by the spec to have an alignment
- // but non-atomic loads/stores may not.
- NewCall->addAttribute(
- 0 + AttributeList::FirstArgIndex,
- Attribute::getWithAlignment(NewCall->getContext(), SI->getAlignment()));
- NewCall->addAttribute(
- 1 + AttributeList::FirstArgIndex,
- Attribute::getWithAlignment(NewCall->getContext(), LI->getAlignment()));
- }
+ CallInst *NewCall =
+ Builder.CreateMemCpy(StoreBasePtr, LoadBasePtr, NumBytes,
+ std::min(SI->getAlignment(), LI->getAlignment()));
NewCall->setDebugLoc(SI->getDebugLoc());
DEBUG(dbgs() << " Formed memcpy: " << *NewCall << "\n"
diff --git a/llvm/test/Transforms/LoopIdiom/unordered-atomic-memcpy.ll b/llvm/test/Transforms/LoopIdiom/unordered-atomic-memcpy.ll
deleted file mode 100644
index cd3aefb5755..00000000000
--- a/llvm/test/Transforms/LoopIdiom/unordered-atomic-memcpy.ll
+++ /dev/null
@@ -1,451 +0,0 @@
-; RUN: opt -basicaa -loop-idiom < %s -S | FileCheck %s
-target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
-
-;; memcpy.atomic formation (atomic load & store)
-define void @test1(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test1(
-; CHECK: call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 1 %Dest, i8* align 1 %Base, i64 %Size, i32 1)
-; CHECK-NOT: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i8, i32 10000
- %Dest = alloca i8, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i8, i8* %Base, i64 %indvar
- %DestI = getelementptr i8, i8* %Dest, i64 %indvar
- %V = load atomic i8, i8* %I.0.014 unordered, align 1
- store atomic i8 %V, i8* %DestI unordered, align 1
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation (atomic store, normal load)
-define void @test2(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test2(
-; CHECK: call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 1 %Dest, i8* align 1 %Base, i64 %Size, i32 1)
-; CHECK-NOT: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i8, i32 10000
- %Dest = alloca i8, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i8, i8* %Base, i64 %indvar
- %DestI = getelementptr i8, i8* %Dest, i64 %indvar
- %V = load i8, i8* %I.0.014, align 1
- store atomic i8 %V, i8* %DestI unordered, align 1
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation rejection (atomic store, normal load w/ no align)
-define void @test2b(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test2b(
-; CHECK-NOT: call void @llvm.memcpy.element.atomic
-; CHECK: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i8, i32 10000
- %Dest = alloca i8, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i8, i8* %Base, i64 %indvar
- %DestI = getelementptr i8, i8* %Dest, i64 %indvar
- %V = load i8, i8* %I.0.014
- store atomic i8 %V, i8* %DestI unordered, align 1
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation rejection (atomic store, normal load w/ bad align)
-define void @test2c(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test2c(
-; CHECK-NOT: call void @llvm.memcpy.element.atomic
-; CHECK: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i32, i32 10000
- %Dest = alloca i32, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i32, i32* %Base, i64 %indvar
- %DestI = getelementptr i32, i32* %Dest, i64 %indvar
- %V = load i32, i32* %I.0.014, align 2
- store atomic i32 %V, i32* %DestI unordered, align 4
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation rejection (atomic store w/ bad align, normal load)
-define void @test2d(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test2d(
-; CHECK-NOT: call void @llvm.memcpy.element.atomic
-; CHECK: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i32, i32 10000
- %Dest = alloca i32, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i32, i32* %Base, i64 %indvar
- %DestI = getelementptr i32, i32* %Dest, i64 %indvar
- %V = load i32, i32* %I.0.014, align 4
- store atomic i32 %V, i32* %DestI unordered, align 2
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-
-;; memcpy.atomic formation (normal store, atomic load)
-define void @test3(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test3(
-; CHECK: call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 1 %Dest, i8* align 1 %Base, i64 %Size, i32 1)
-; CHECK-NOT: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i8, i32 10000
- %Dest = alloca i8, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i8, i8* %Base, i64 %indvar
- %DestI = getelementptr i8, i8* %Dest, i64 %indvar
- %V = load atomic i8, i8* %I.0.014 unordered, align 1
- store i8 %V, i8* %DestI, align 1
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation rejection (normal store w/ no align, atomic load)
-define void @test3b(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test3b(
-; CHECK-NOT: call void @llvm.memcpy.element.atomic
-; CHECK: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i8, i32 10000
- %Dest = alloca i8, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i8, i8* %Base, i64 %indvar
- %DestI = getelementptr i8, i8* %Dest, i64 %indvar
- %V = load atomic i8, i8* %I.0.014 unordered, align 1
- store i8 %V, i8* %DestI
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation rejection (normal store, atomic load w/ bad align)
-define void @test3c(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test3c(
-; CHECK-NOT: call void @llvm.memcpy.element.atomic
-; CHECK: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i32, i32 10000
- %Dest = alloca i32, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i32, i32* %Base, i64 %indvar
- %DestI = getelementptr i32, i32* %Dest, i64 %indvar
- %V = load atomic i32, i32* %I.0.014 unordered, align 2
- store i32 %V, i32* %DestI, align 4
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation rejection (normal store w/ bad align, atomic load)
-define void @test3d(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test3d(
-; CHECK-NOT: call void @llvm.memcpy.element.atomic
-; CHECK: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i32, i32 10000
- %Dest = alloca i32, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i32, i32* %Base, i64 %indvar
- %DestI = getelementptr i32, i32* %Dest, i64 %indvar
- %V = load atomic i32, i32* %I.0.014 unordered, align 4
- store i32 %V, i32* %DestI, align 2
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-
-;; memcpy.atomic formation rejection (atomic load, ordered-atomic store)
-define void @test4(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test4(
-; CHECK-NOT: call void @llvm.memcpy.element.atomic
-; CHECK: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i8, i32 10000
- %Dest = alloca i8, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i8, i8* %Base, i64 %indvar
- %DestI = getelementptr i8, i8* %Dest, i64 %indvar
- %V = load atomic i8, i8* %I.0.014 unordered, align 1
- store atomic i8 %V, i8* %DestI monotonic, align 1
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation rejection (ordered-atomic load, unordered-atomic store)
-define void @test5(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test5(
-; CHECK-NOT: call void @llvm.memcpy.element.atomic
-; CHECK: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i8, i32 10000
- %Dest = alloca i8, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i8, i8* %Base, i64 %indvar
- %DestI = getelementptr i8, i8* %Dest, i64 %indvar
- %V = load atomic i8, i8* %I.0.014 monotonic, align 1
- store atomic i8 %V, i8* %DestI unordered, align 1
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation (atomic load & store) -- element size 2
-define void @test6(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test6(
-; CHECK: call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 2 %Dest{{[0-9]*}}, i8* align 2 %Base{{[0-9]*}}, i64 %Size, i32 2)
-; CHECK-NOT: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i16, i32 10000
- %Dest = alloca i16, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i16, i16* %Base, i64 %indvar
- %DestI = getelementptr i16, i16* %Dest, i64 %indvar
- %V = load atomic i16, i16* %I.0.014 unordered, align 2
- store atomic i16 %V, i16* %DestI unordered, align 2
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation (atomic load & store) -- element size 4
-define void @test7(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test7(
-; CHECK: call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 4 %Dest{{[0-9]*}}, i8* align 4 %Base{{[0-9]*}}, i64 %Size, i32 4)
-; CHECK-NOT: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i32, i32 10000
- %Dest = alloca i32, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i32, i32* %Base, i64 %indvar
- %DestI = getelementptr i32, i32* %Dest, i64 %indvar
- %V = load atomic i32, i32* %I.0.014 unordered, align 4
- store atomic i32 %V, i32* %DestI unordered, align 4
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation (atomic load & store) -- element size 8
-define void @test8(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test8(
-; CHECK: call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 8 %Dest{{[0-9]*}}, i8* align 8 %Base{{[0-9]*}}, i64 %Size, i32 8)
-; CHECK-NOT: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i64, i32 10000
- %Dest = alloca i64, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i64, i64* %Base, i64 %indvar
- %DestI = getelementptr i64, i64* %Dest, i64 %indvar
- %V = load atomic i64, i64* %I.0.014 unordered, align 8
- store atomic i64 %V, i64* %DestI unordered, align 8
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation (atomic load & store) -- element size 16
-define void @test9(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test9(
-; CHECK: call void @llvm.memcpy.element.atomic.p0i8.p0i8(i8* align 16 %Dest{{[0-9]*}}, i8* align 16 %Base{{[0-9]*}}, i64 %Size, i32 16)
-; CHECK-NOT: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i128, i32 10000
- %Dest = alloca i128, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i128, i128* %Base, i64 %indvar
- %DestI = getelementptr i128, i128* %Dest, i64 %indvar
- %V = load atomic i128, i128* %I.0.014 unordered, align 16
- store atomic i128 %V, i128* %DestI unordered, align 16
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-;; memcpy.atomic formation rejection (atomic load & store) -- element size 32
-define void @test10(i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test10(
-; CHECK-NOT: call void @llvm.memcpy.element.atomic
-; CHECK: store
-; CHECK: ret void
-bb.nph:
- %Base = alloca i256, i32 10000
- %Dest = alloca i256, i32 10000
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i256, i256* %Base, i64 %indvar
- %DestI = getelementptr i256, i256* %Dest, i64 %indvar
- %V = load atomic i256, i256* %I.0.014 unordered, align 32
- store atomic i256 %V, i256* %DestI unordered, align 32
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-
-
-; Make sure that atomic memset doesn't get recognized by mistake
-define void @test_nomemset(i8* %Base, i64 %Size) nounwind ssp {
-; CHECK-LABEL: @test_nomemset(
-; CHECK-NOT: call void @llvm.memset
-; CHECK: store
-; CHECK: ret void
-bb.nph: ; preds = %entry
- br label %for.body
-
-for.body: ; preds = %bb.nph, %for.body
- %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
- %I.0.014 = getelementptr i8, i8* %Base, i64 %indvar
- store atomic i8 0, i8* %I.0.014 unordered, align 1
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, %Size
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body, %entry
- ret void
-}
-
-; Verify that unordered memset_pattern isn't recognized.
-; This is a replica of test11_pattern from basic.ll
-define void @test_nomemset_pattern(i32* nocapture %P) nounwind ssp {
-; CHECK-LABEL: @test_nomemset_pattern(
-; CHECK-NEXT: entry:
-; CHECK-NOT: bitcast
-; CHECK-NOT: memset_pattern
-; CHECK: store atomic
-; CHECK: ret void
-entry:
- br label %for.body
-
-for.body: ; preds = %entry, %for.body
- %indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.body ]
- %arrayidx = getelementptr i32, i32* %P, i64 %indvar
- store atomic i32 1, i32* %arrayidx unordered, align 4
- %indvar.next = add i64 %indvar, 1
- %exitcond = icmp eq i64 %indvar.next, 10000
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end: ; preds = %for.body
- ret void
-}
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