Index: llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
===================================================================
--- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -816,7 +816,7 @@
/// Middle Block between the vector and the scalar.
BasicBlock *LoopMiddleBlock;
- /// The (unique) ExitBlock of the scalar loop. Note that
+ /// The unique ExitBlock of the scalar loop if one exists. Note that
/// there can be multiple exiting edges reaching this block.
BasicBlock *LoopExitBlock;
@@ -3268,9 +3268,13 @@
DT->getNode(Bypass)->getIDom()) &&
"TC check is expected to dominate Bypass");
- // Update dominator for Bypass & LoopExit.
+ // Update dominator for Bypass & LoopExit (if needed).
DT->changeImmediateDominator(Bypass, TCCheckBlock);
- DT->changeImmediateDominator(LoopExitBlock, TCCheckBlock);
+ if (!Cost->requiresScalarEpilogue(VF))
+ // If there is an epilogue which must run, there's no edge from the
+ // middle block to exit blocks and thus no need to update the immediate
+ // dominator of the exit blocks.
+ DT->changeImmediateDominator(LoopExitBlock, TCCheckBlock);
ReplaceInstWithInst(
TCCheckBlock->getTerminator(),
@@ -3294,7 +3298,11 @@
// Update dominator only if this is first RT check.
if (LoopBypassBlocks.empty()) {
DT->changeImmediateDominator(Bypass, SCEVCheckBlock);
- DT->changeImmediateDominator(LoopExitBlock, SCEVCheckBlock);
+ if (!Cost->requiresScalarEpilogue(VF))
+ // If there is an epilogue which must run, there's no edge from the
+ // middle block to exit blocks and thus no need to update the immediate
+ // dominator of the exit blocks.
+ DT->changeImmediateDominator(LoopExitBlock, SCEVCheckBlock);
}
LoopBypassBlocks.push_back(SCEVCheckBlock);
@@ -3447,9 +3455,10 @@
Loop *InnerLoopVectorizer::createVectorLoopSkeleton(StringRef Prefix) {
LoopScalarBody = OrigLoop->getHeader();
LoopVectorPreHeader = OrigLoop->getLoopPreheader();
- LoopExitBlock = OrigLoop->getUniqueExitBlock();
- assert(LoopExitBlock && "Must have an exit block");
assert(LoopVectorPreHeader && "Invalid loop structure");
+ LoopExitBlock = OrigLoop->getUniqueExitBlock(); // may be nullptr
+ assert((LoopExitBlock || Cost->requiresScalarEpilogue(VF)) &&
+ "multiple exit loop without required epilogue?");
LoopMiddleBlock =
SplitBlock(LoopVectorPreHeader, LoopVectorPreHeader->getTerminator(), DT,
@@ -3458,12 +3467,20 @@
SplitBlock(LoopMiddleBlock, LoopMiddleBlock->getTerminator(), DT, LI,
nullptr, Twine(Prefix) + "scalar.ph");
- // Set up branch from middle block to the exit and scalar preheader blocks.
- // completeLoopSkeleton will update the condition to use an iteration check,
- // if required to decide whether to execute the remainder.
- BranchInst *BrInst =
- BranchInst::Create(LoopExitBlock, LoopScalarPreHeader, Builder.getTrue());
auto *ScalarLatchTerm = OrigLoop->getLoopLatch()->getTerminator();
+
+ // Set up the middle block terminator. Two cases:
+ // 1) If we know that we must execute the scalar epilogue, emit an
+ // unconditional branch.
+ // 2) Otherwise, we must have a single unique exit block (due to how we
+ // implement the multiple exit case). In this case, set up a conditonal
+ // branch from the middle block to the loop scalar preheader, and the
+ // exit block. completeLoopSkeleton will update the condition to use an
+ // iteration check, if required to decide whether to execute the remainder.
+ BranchInst *BrInst = Cost->requiresScalarEpilogue(VF) ?
+ BranchInst::Create(LoopScalarPreHeader) :
+ BranchInst::Create(LoopExitBlock, LoopScalarPreHeader,
+ Builder.getTrue());
BrInst->setDebugLoc(ScalarLatchTerm->getDebugLoc());
ReplaceInstWithInst(LoopMiddleBlock->getTerminator(), BrInst);
@@ -3475,7 +3492,11 @@
nullptr, nullptr, Twine(Prefix) + "vector.body");
// Update dominator for loop exit.
- DT->changeImmediateDominator(LoopExitBlock, LoopMiddleBlock);
+ if (!Cost->requiresScalarEpilogue(VF))
+ // If there is an epilogue which must run, there's no edge from the
+ // middle block to exit blocks and thus no need to update the immediate
+ // dominator of the exit blocks.
+ DT->changeImmediateDominator(LoopExitBlock, LoopMiddleBlock);
// Create and register the new vector loop.
Loop *Lp = LI->AllocateLoop();
@@ -3577,10 +3598,14 @@
auto *ScalarLatchTerm = OrigLoop->getLoopLatch()->getTerminator();
// Add a check in the middle block to see if we have completed
- // all of the iterations in the first vector loop.
- // If (N - N%VF) == N, then we *don't* need to run the remainder.
- // If tail is to be folded, we know we don't need to run the remainder.
- if (!Cost->foldTailByMasking()) {
+ // all of the iterations in the first vector loop. Three cases:
+ // 1) If we require a scalar epilogue, there is no conditional branch as
+ // we unconditionally branch to the scalar preheader. Do nothing.
+ // 2) If (N - N%VF) == N, then we *don't* need to run the remainder.
+ // Thus if tail is to be folded, we know we don't need to run the
+ // remainder and we can use the previous value for the condition (true).
+ // 3) Otherwise, construct a runtime check.
+ if (!Cost->requiresScalarEpilogue(VF) && !Cost->foldTailByMasking()) {
Instruction *CmpN = CmpInst::Create(Instruction::ICmp, CmpInst::ICMP_EQ,
Count, VectorTripCount, "cmp.n",
LoopMiddleBlock->getTerminator());
@@ -3644,17 +3669,17 @@
| [ ]_| <-- vector loop.
| |
| v
- | -[ ] <--- middle-block.
- | / |
- | / v
- -|- >[ ] <--- new preheader.
+ \ -[ ] <--- middle-block.
+ \/ |
+ /\ v
+ | ->[ ] <--- new preheader.
| |
- | v
+ (opt) v <-- edge from middle to exit iff epilogue is not required.
| [ ] \
- | [ ]_| <-- old scalar loop to handle remainder.
+ | [ ]_| <-- old scalar loop to handle remainder (scalar epilogue).
\ |
\ v
- >[ ] <-- exit block.
+ >[ ] <-- exit block(s).
...
*/
@@ -4091,13 +4116,19 @@
// Forget the original basic block.
PSE.getSE()->forgetLoop(OrigLoop);
- // Fix-up external users of the induction variables.
- for (auto &Entry : Legal->getInductionVars())
- fixupIVUsers(Entry.first, Entry.second,
- getOrCreateVectorTripCount(LI->getLoopFor(LoopVectorBody)),
- IVEndValues[Entry.first], LoopMiddleBlock);
+ // If we inserted an edge from the middle block to the unique exit block,
+ // update uses outside the loop (phis) to account for the newly inserted
+ // edge.
+ if (!Cost->requiresScalarEpilogue(VF)) {
+ // Fix-up external users of the induction variables.
+ for (auto &Entry : Legal->getInductionVars())
+ fixupIVUsers(Entry.first, Entry.second,
+ getOrCreateVectorTripCount(LI->getLoopFor(LoopVectorBody)),
+ IVEndValues[Entry.first], LoopMiddleBlock);
+
+ fixLCSSAPHIs(State);
+ }
- fixLCSSAPHIs(State);
for (Instruction *PI : PredicatedInstructions)
sinkScalarOperands(&*PI);
@@ -4312,12 +4343,13 @@
// recurrence in the exit block, and then add an edge for the middle block.
// Note that LCSSA does not imply single entry when the original scalar loop
// had multiple exiting edges (as we always run the last iteration in the
- // scalar epilogue); in that case, the exiting path through middle will be
- // dynamically dead and the value picked for the phi doesn't matter.
- for (PHINode &LCSSAPhi : LoopExitBlock->phis())
- if (any_of(LCSSAPhi.incoming_values(),
- [Phi](Value *V) { return V == Phi; }))
- LCSSAPhi.addIncoming(ExtractForPhiUsedOutsideLoop, LoopMiddleBlock);
+ // scalar epilogue); in that case, there is no edge from middle to exit and
+ // and thus no phis which needed updated.
+ if (!Cost->requiresScalarEpilogue(VF))
+ for (PHINode &LCSSAPhi : LoopExitBlock->phis())
+ if (any_of(LCSSAPhi.incoming_values(),
+ [Phi](Value *V) { return V == Phi; }))
+ LCSSAPhi.addIncoming(ExtractForPhiUsedOutsideLoop, LoopMiddleBlock);
}
void InnerLoopVectorizer::fixReduction(VPReductionPHIRecipe *PhiR,
@@ -4486,10 +4518,11 @@
// We know that the loop is in LCSSA form. We need to update the PHI nodes
// in the exit blocks. See comment on analogous loop in
// fixFirstOrderRecurrence for a more complete explaination of the logic.
- for (PHINode &LCSSAPhi : LoopExitBlock->phis())
- if (any_of(LCSSAPhi.incoming_values(),
- [LoopExitInst](Value *V) { return V == LoopExitInst; }))
- LCSSAPhi.addIncoming(ReducedPartRdx, LoopMiddleBlock);
+ if (!Cost->requiresScalarEpilogue(VF))
+ for (PHINode &LCSSAPhi : LoopExitBlock->phis())
+ if (any_of(LCSSAPhi.incoming_values(),
+ [LoopExitInst](Value *V) { return V == LoopExitInst; }))
+ LCSSAPhi.addIncoming(ReducedPartRdx, LoopMiddleBlock);
// Fix the scalar loop reduction variable with the incoming reduction sum
// from the vector body and from the backedge value.
@@ -8319,7 +8352,11 @@
// Update dominator for Bypass & LoopExit.
DT->changeImmediateDominator(Bypass, TCCheckBlock);
- DT->changeImmediateDominator(LoopExitBlock, TCCheckBlock);
+ if (!Cost->requiresScalarEpilogue(EPI.EpilogueVF))
+ // For loops with multiple exits, there's no edge from the middle block
+ // to exit blocks (as the epilogue must run) and thus no need to update
+ // the immediate dominator of the exit blocks.
+ DT->changeImmediateDominator(LoopExitBlock, TCCheckBlock);
LoopBypassBlocks.push_back(TCCheckBlock);
@@ -8383,7 +8420,12 @@
DT->changeImmediateDominator(LoopScalarPreHeader,
EPI.EpilogueIterationCountCheck);
- DT->changeImmediateDominator(LoopExitBlock, EPI.EpilogueIterationCountCheck);
+ if (!Cost->requiresScalarEpilogue(EPI.EpilogueVF))
+ // If there is an epilogue which must run, there's no edge from the
+ // middle block to exit blocks and thus no need to update the immediate
+ // dominator of the exit blocks.
+ DT->changeImmediateDominator(LoopExitBlock,
+ EPI.EpilogueIterationCountCheck);
// Keep track of bypass blocks, as they feed start values to the induction
// phis in the scalar loop preheader.
Index: llvm/test/Transforms/LoopVectorize/ARM/mve-gather-scatter-tailpred.ll
===================================================================
--- llvm/test/Transforms/LoopVectorize/ARM/mve-gather-scatter-tailpred.ll
+++ llvm/test/Transforms/LoopVectorize/ARM/mve-gather-scatter-tailpred.ll
@@ -30,7 +30,7 @@
; CHECK-NEXT: call void @llvm.masked.store.v4i32.p0v4i32(<4 x i32> [[TMP6]], <4 x i32>* [[TMP9]], i32 4, <4 x i1> [[ACTIVE_LANE_MASK]])
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 4
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: br i1 true, label [[END:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
@@ -47,7 +47,7 @@
; CHECK-NEXT: store i32 [[ADD7]], i32* [[ARRAYIDX9]], align 4
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_023]], 1
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[N]]
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], [[LOOP2:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: ret void
;
@@ -109,7 +109,7 @@
; CHECK-NEXT: store <4 x i32> [[TMP15]], <4 x i32>* [[TMP18]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT: [[TMP19:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP19]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP4:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP19]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[N]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[END:%.*]], label [[SCALAR_PH]]
@@ -127,7 +127,7 @@
; CHECK-NEXT: store i32 [[ADD7]], i32* [[ARRAYIDX9]], align 4
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_023]], 1
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[N]]
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], [[LOOP5:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: ret void
;
@@ -178,10 +178,9 @@
; CHECK-NEXT: store <4 x i32> [[TMP8]], <4 x i32>* [[TMP11]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP6:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[N]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[CMP_N]], label [[END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
@@ -196,7 +195,7 @@
; CHECK-NEXT: store i32 [[ADD7]], i32* [[ARRAYIDX9]], align 4
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_023]], 1
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[N]]
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], [[LOOP7:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END:%.*]], label [[FOR_BODY]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: ret void
;
@@ -247,7 +246,7 @@
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 4
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4>
; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP8:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: br i1 true, label [[END:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
@@ -264,7 +263,7 @@
; CHECK-NEXT: store i32 [[ADD7]], i32* [[ARRAYIDX9]], align 4
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_023]], 1
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[N]]
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], [[LOOP9:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: ret void
;
@@ -315,7 +314,7 @@
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 4
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4>
; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP10:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: br i1 true, label [[END:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
@@ -332,7 +331,7 @@
; CHECK-NEXT: store i32 [[ADD7]], i32* [[ARRAYIDX9]], align 4
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_023]], 1
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[N]]
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], [[LOOP11:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], !llvm.loop [[LOOP11:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: ret void
;
@@ -387,7 +386,7 @@
; CHECK-NEXT: call void @llvm.masked.store.v4i32.p0v4i32(<4 x i32> [[TMP7]], <4 x i32>* [[TMP10]], i32 4, <4 x i1> [[ACTIVE_LANE_MASK]])
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 4
; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP12:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: br i1 true, label [[END:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
@@ -404,7 +403,7 @@
; CHECK-NEXT: store i32 [[ADD7]], i32* [[ARRAYIDX9]], align 4
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_023]], 1
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[N]]
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], [[LOOP13:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], !llvm.loop [[LOOP13:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: ret void
;
@@ -458,7 +457,7 @@
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4>
; CHECK-NEXT: [[VEC_IND_NEXT3]] = add <4 x i32> [[VEC_IND2]], <i32 32, i32 32, i32 32, i32 32>
; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP14:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP14:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[N]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[END:%.*]], label [[SCALAR_PH]]
@@ -479,7 +478,7 @@
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_023]], 1
; CHECK-NEXT: [[NEXT_STRIDE]] = add nuw nsw i32 [[STRIDE]], 8
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[N]]
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], [[LOOP15:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], !llvm.loop [[LOOP15:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: ret void
;
@@ -583,7 +582,7 @@
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4>
; CHECK-NEXT: [[VEC_IND_NEXT5]] = add <4 x i32> [[VEC_IND4]], [[DOTSPLAT3]]
; CHECK-NEXT: [[TMP14:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP16:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP14]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP16:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[N]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[END:%.*]], label [[SCALAR_PH]]
@@ -604,7 +603,7 @@
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_023]], 1
; CHECK-NEXT: [[NEXT_STRIDE]] = add nuw nsw i32 [[STRIDE]], [[X]]
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i32 [[INC]], [[N]]
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], [[LOOP17:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[END]], label [[FOR_BODY]], !llvm.loop [[LOOP17:![0-9]+]]
; CHECK: end:
; CHECK-NEXT: ret void
;
Index: llvm/test/Transforms/LoopVectorize/first-order-recurrence-complex.ll
===================================================================
--- llvm/test/Transforms/LoopVectorize/first-order-recurrence-complex.ll
+++ llvm/test/Transforms/LoopVectorize/first-order-recurrence-complex.ll
@@ -38,7 +38,7 @@
; CHECK-NEXT: store <4 x i32> [[TMP6]], <4 x i32>* [[TMP9]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1996
-; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1999, 1996
; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 3
@@ -59,7 +59,7 @@
; CHECK-NEXT: store i32 [[ADD_2]], i32* [[IDX_2]], align 4
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 2000
-; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT]], label [[FOR]], [[LOOP2:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT]], label [[FOR]], !llvm.loop [[LOOP2:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
@@ -122,7 +122,7 @@
; CHECK-NEXT: store <4 x i32> [[TMP6]], <4 x i32>* [[TMP9]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1996
-; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP4:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1999, 1996
; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i32> [[WIDE_LOAD]], i32 3
@@ -143,7 +143,7 @@
; CHECK-NEXT: store i32 [[ADD_2]], i32* [[IDX_2]], align 4
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 2000
-; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT]], label [[FOR]], [[LOOP5:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT]], label [[FOR]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
@@ -502,12 +502,11 @@
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4>
; CHECK-NEXT: [[TMP13:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP6:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP0]], [[N_VEC]]
; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i16> [[WIDE_LOAD]], i32 3
; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI:%.*]] = extractelement <4 x i16> [[WIDE_LOAD]], i32 2
-; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
@@ -519,14 +518,14 @@
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
; CHECK-NEXT: [[REC_NEXT]] = load i16, i16* [[B]], align 2
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
-; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: store i16 [[SCALAR_RECUR]], i16* [[B]], align 4
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
-; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], [[LOOP7:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: if.end:
-; CHECK-NEXT: [[REC_LCSSA:%.*]] = phi i16 [ [[SCALAR_RECUR]], [[FOR_BODY]] ], [ [[SCALAR_RECUR]], [[FOR_COND]] ], [ [[VECTOR_RECUR_EXTRACT_FOR_PHI]], [[MIDDLE_BLOCK]] ]
+; CHECK-NEXT: [[REC_LCSSA:%.*]] = phi i16 [ [[SCALAR_RECUR]], [[FOR_BODY]] ], [ [[SCALAR_RECUR]], [[FOR_COND]] ]
; CHECK-NEXT: ret i16 [[REC_LCSSA]]
;
entry:
@@ -587,12 +586,11 @@
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i32> [[VEC_IND]], <i32 4, i32 4, i32 4, i32 4>
; CHECK-NEXT: [[TMP13:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP8:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP0]], [[N_VEC]]
; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT:%.*]] = extractelement <4 x i16> [[WIDE_LOAD]], i32 3
; CHECK-NEXT: [[VECTOR_RECUR_EXTRACT_FOR_PHI:%.*]] = extractelement <4 x i16> [[WIDE_LOAD]], i32 2
-; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[SCALAR_RECUR_INIT:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[VECTOR_RECUR_EXTRACT]], [[MIDDLE_BLOCK]] ]
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
@@ -604,14 +602,14 @@
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
; CHECK-NEXT: [[REC_NEXT]] = load i16, i16* [[B]], align 2
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
-; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: store i16 [[SCALAR_RECUR]], i16* [[B]], align 4
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
-; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], [[LOOP9:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK: if.end:
-; CHECK-NEXT: [[REC_LCSSA:%.*]] = phi i16 [ [[SCALAR_RECUR]], [[FOR_COND]] ], [ 10, [[FOR_BODY]] ], [ [[VECTOR_RECUR_EXTRACT_FOR_PHI]], [[MIDDLE_BLOCK]] ]
+; CHECK-NEXT: [[REC_LCSSA:%.*]] = phi i16 [ [[SCALAR_RECUR]], [[FOR_COND]] ], [ 10, [[FOR_BODY]] ]
; CHECK-NEXT: ret i16 [[REC_LCSSA]]
;
entry:
Index: llvm/test/Transforms/LoopVectorize/interleaved-accesses.ll
===================================================================
--- llvm/test/Transforms/LoopVectorize/interleaved-accesses.ll
+++ llvm/test/Transforms/LoopVectorize/interleaved-accesses.ll
@@ -443,7 +443,7 @@
; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], 508
; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: br i1 false, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 1016, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
@@ -459,7 +459,7 @@
; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX2]], align 4
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 2
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[INDVARS_IV]], 1022
-; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP]], !llvm.loop [[LOOP13:![0-9]+]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP:%.*]], !llvm.loop [[LOOP13:![0-9]+]]
;
entry:
br label %for.body
@@ -523,7 +523,7 @@
; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP14:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: br i1 false, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
@@ -539,7 +539,7 @@
; CHECK-NEXT: store i32 [[MUL]], i32* [[ARRAYIDX2]], align 4
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 2
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[INDVARS_IV_NEXT]], [[N]]
-; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP]], !llvm.loop [[LOOP15:![0-9]+]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP:%.*]], !llvm.loop [[LOOP15:![0-9]+]]
;
entry:
br label %for.body
@@ -959,7 +959,7 @@
; CHECK-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP24:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: br i1 false, label [[FOR_END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
@@ -971,7 +971,7 @@
; CHECK-NEXT: store i32 [[Z]], i32* [[P_I_Y]], align 4
; CHECK-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT: [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
-; CHECK-NEXT: br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END]], !llvm.loop [[LOOP25:![0-9]+]]
+; CHECK-NEXT: br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END:%.*]], !llvm.loop [[LOOP25:![0-9]+]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
@@ -1047,7 +1047,7 @@
; CHECK-NEXT: br i1 [[TMP17]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP26:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[TMP18:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP16]])
-; CHECK-NEXT: br i1 false, label [[FOR_END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP18]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
@@ -1062,10 +1062,9 @@
; CHECK-NEXT: [[TMP20]] = add nsw i32 [[TMP19]], [[S]]
; CHECK-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT: [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
-; CHECK-NEXT: br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END]], !llvm.loop [[LOOP27:![0-9]+]]
+; CHECK-NEXT: br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END:%.*]], !llvm.loop [[LOOP27:![0-9]+]]
; CHECK: for.end:
-; CHECK-NEXT: [[TMP21:%.*]] = phi i32 [ [[TMP20]], [[FOR_BODY]] ], [ [[TMP18]], [[MIDDLE_BLOCK]] ]
-; CHECK-NEXT: ret i32 [[TMP21]]
+; CHECK-NEXT: ret i32 [[TMP20]]
;
entry:
br label %for.body
@@ -1143,7 +1142,7 @@
; CHECK-NEXT: [[TMP19:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP19]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP28:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: br i1 false, label [[FOR_END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
@@ -1157,7 +1156,7 @@
; CHECK-NEXT: store i32 [[TMP20]], i32* [[P_I_Y]], align 4
; CHECK-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT: [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
-; CHECK-NEXT: br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END]], !llvm.loop [[LOOP29:![0-9]+]]
+; CHECK-NEXT: br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END:%.*]], !llvm.loop [[LOOP29:![0-9]+]]
; CHECK: for.end:
; CHECK-NEXT: ret void
;
@@ -1239,7 +1238,7 @@
; CHECK-NEXT: br i1 [[TMP20]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP30:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[TMP21:%.*]] = call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> [[TMP19]])
-; CHECK-NEXT: br i1 false, label [[FOR_END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ [[TMP21]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ]
@@ -1257,10 +1256,9 @@
; CHECK-NEXT: [[TMP24]] = add nsw i32 [[TMP23]], [[S]]
; CHECK-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1
; CHECK-NEXT: [[COND:%.*]] = icmp slt i64 [[I_NEXT]], [[N]]
-; CHECK-NEXT: br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END]], !llvm.loop [[LOOP31:![0-9]+]]
+; CHECK-NEXT: br i1 [[COND]], label [[FOR_BODY]], label [[FOR_END:%.*]], !llvm.loop [[LOOP31:![0-9]+]]
; CHECK: for.end:
-; CHECK-NEXT: [[TMP25:%.*]] = phi i32 [ [[TMP24]], [[FOR_BODY]] ], [ [[TMP21]], [[MIDDLE_BLOCK]] ]
-; CHECK-NEXT: ret i32 [[TMP25]]
+; CHECK-NEXT: ret i32 [[TMP24]]
;
entry:
br label %for.body
Index: llvm/test/Transforms/LoopVectorize/loop-form.ll
===================================================================
--- llvm/test/Transforms/LoopVectorize/loop-form.ll
+++ llvm/test/Transforms/LoopVectorize/loop-form.ll
@@ -25,7 +25,7 @@
; CHECK-NEXT: store <2 x i16> zeroinitializer, <2 x i16>* [[TMP5]], align 4
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP0]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
@@ -39,7 +39,7 @@
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
-; CHECK-NEXT: br i1 [[CMP]], label [[FOR_COND]], label [[IF_END]], [[LOOP2:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_COND]], label [[IF_END]], !llvm.loop [[LOOP2:![0-9]+]]
; CHECK: if.end:
; CHECK-NEXT: ret void
;
@@ -82,7 +82,7 @@
; TAILFOLD-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 2
; TAILFOLD-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2>
; TAILFOLD-NEXT: [[TMP11:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; TAILFOLD-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]]
+; TAILFOLD-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; TAILFOLD: middle.block:
; TAILFOLD-NEXT: br i1 true, label [[IF_END:%.*]], label [[SCALAR_PH]]
; TAILFOLD: scalar.ph:
@@ -95,7 +95,7 @@
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
-; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_COND]], label [[IF_END]], [[LOOP2:!llvm.loop !.*]]
+; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_COND]], label [[IF_END]], !llvm.loop [[LOOP2:![0-9]+]]
; TAILFOLD: if.end:
; TAILFOLD-NEXT: ret void
;
@@ -141,23 +141,22 @@
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2>
; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP4:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP0]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
-; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
-; CHECK-NEXT: br label [[FOR_COND]], [[LOOP5:!llvm.loop !.*]]
+; CHECK-NEXT: br label [[FOR_COND]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK: if.end:
; CHECK-NEXT: ret void
;
@@ -279,24 +278,23 @@
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2>
; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP6:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP0]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
-; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
-; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], [[LOOP7:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: if.end:
; CHECK-NEXT: ret void
;
@@ -365,28 +363,25 @@
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2>
; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP8:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP0]], [[N_VEC]]
-; CHECK-NEXT: [[IND_ESCAPE:%.*]] = sub i32 [[N_VEC]], 1
-; CHECK-NEXT: [[IND_ESCAPE1:%.*]] = sub i32 [[N_VEC]], 1
-; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
-; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
-; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], [[LOOP9:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK: if.end:
-; CHECK-NEXT: [[I_LCSSA:%.*]] = phi i32 [ [[I]], [[FOR_BODY]] ], [ [[I]], [[FOR_COND]] ], [ [[IND_ESCAPE1]], [[MIDDLE_BLOCK]] ]
+; CHECK-NEXT: [[I_LCSSA:%.*]] = phi i32 [ [[I]], [[FOR_BODY]] ], [ [[I]], [[FOR_COND]] ]
; CHECK-NEXT: ret i32 [[I_LCSSA]]
;
; TAILFOLD-LABEL: @multiple_unique_exit2(
@@ -455,26 +450,25 @@
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2>
; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP10:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP0]], [[N_VEC]]
-; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
-; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END]]
+; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
-; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], [[LOOP11:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], !llvm.loop [[LOOP11:![0-9]+]]
; CHECK: if.end:
-; CHECK-NEXT: [[EXIT:%.*]] = phi i32 [ 0, [[FOR_COND]] ], [ 1, [[FOR_BODY]] ], [ 0, [[MIDDLE_BLOCK]] ]
+; CHECK-NEXT: [[EXIT:%.*]] = phi i32 [ 0, [[FOR_COND]] ], [ 1, [[FOR_BODY]] ]
; CHECK-NEXT: ret i32 [[EXIT]]
;
; TAILFOLD-LABEL: @multiple_unique_exit3(
@@ -989,10 +983,9 @@
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], <i64 2, i64 2>
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], 200
-; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP12:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 201, 200
-; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 200, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
@@ -1000,7 +993,7 @@
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr float, float* [[ADDR]], i64 [[IV]]
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV]], 200
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[LOOP_BODY:%.*]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT:%.*]], label [[LOOP_BODY:%.*]]
; CHECK: loop.body:
; CHECK-NEXT: [[TMP11:%.*]] = load float, float* [[GEP]], align 4
; CHECK-NEXT: [[PRED:%.*]] = fcmp oeq float [[TMP11]], 0.000000e+00
@@ -1010,7 +1003,7 @@
; CHECK-NEXT: br label [[LOOP_LATCH]]
; CHECK: loop.latch:
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
-; CHECK-NEXT: br label [[LOOP_HEADER]], [[LOOP13:!llvm.loop !.*]]
+; CHECK-NEXT: br label [[LOOP_HEADER]], !llvm.loop [[LOOP13:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
@@ -1081,11 +1074,10 @@
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], <i64 2, i64 2>
; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], 200
-; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP14:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP14:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[TMP7:%.*]] = call i32 @llvm.vector.reduce.add.v2i32(<2 x i32> [[TMP5]])
-; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 201, 200
-; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 200, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[TMP7]], [[MIDDLE_BLOCK]] ]
@@ -1095,15 +1087,15 @@
; CHECK-NEXT: [[ACCUM:%.*]] = phi i32 [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ], [ [[ACCUM_NEXT:%.*]], [[LOOP_LATCH]] ]
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[ADDR]], i64 [[IV]]
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV]], 200
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[LOOP_LATCH]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT:%.*]], label [[LOOP_LATCH]]
; CHECK: loop.latch:
; CHECK-NEXT: [[TMP8:%.*]] = load i32, i32* [[GEP]], align 4
; CHECK-NEXT: [[ACCUM_NEXT]] = add i32 [[ACCUM]], [[TMP8]]
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[EXITCOND2_NOT:%.*]] = icmp eq i64 [[IV]], 400
-; CHECK-NEXT: br i1 [[EXITCOND2_NOT]], label [[EXIT]], label [[LOOP_HEADER]], [[LOOP15:!llvm.loop !.*]]
+; CHECK-NEXT: br i1 [[EXITCOND2_NOT]], label [[EXIT]], label [[LOOP_HEADER]], !llvm.loop [[LOOP15:![0-9]+]]
; CHECK: exit:
-; CHECK-NEXT: [[LCSSA:%.*]] = phi i32 [ 0, [[LOOP_HEADER]] ], [ [[ACCUM_NEXT]], [[LOOP_LATCH]] ], [ [[TMP7]], [[MIDDLE_BLOCK]] ]
+; CHECK-NEXT: [[LCSSA:%.*]] = phi i32 [ 0, [[LOOP_HEADER]] ], [ [[ACCUM_NEXT]], [[LOOP_LATCH]] ]
; CHECK-NEXT: ret i32 [[LCSSA]]
;
; TAILFOLD-LABEL: @me_reduction(
Index: llvm/test/Transforms/LoopVectorize/unroll_nonlatch.ll
===================================================================
--- llvm/test/Transforms/LoopVectorize/unroll_nonlatch.ll
+++ llvm/test/Transforms/LoopVectorize/unroll_nonlatch.ll
@@ -34,8 +34,7 @@
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], 1022
; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
-; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, 1022
-; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[SCALAR_PH]]
+; CHECK-NEXT: br label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 1022, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
@@ -43,7 +42,7 @@
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_LATCH:%.*]] ]
; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 1024
-; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_END]], label [[FOR_LATCH]]
+; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_END:%.*]], label [[FOR_LATCH]]
; CHECK: for.latch:
; CHECK-NEXT: [[T15:%.*]] = shl nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT: [[T16:%.*]] = or i64 [[T15]], 1