1 files changed, 117 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopVectorize/PowerPC/vplan-force-tail-with-evl.ll b/llvm/test/Transforms/LoopVectorize/PowerPC/vplan-force-tail-with-evl.ll
new file mode 100644
index 0000000..5d1a471
--- /dev/null
+++ b/llvm/test/Transforms/LoopVectorize/PowerPC/vplan-force-tail-with-evl.ll
@@ -0,0 +1,117 @@
+; REQUIRES: asserts
+
+; RUN: opt -passes=loop-vectorize -debug-only=loop-vectorize \
+; RUN: -force-tail-folding-style=data-with-evl \
+; RUN: -prefer-predicate-over-epilogue=predicate-dont-vectorize \
+; RUN: -mtriple=powerpc64le-unknown-linux-gnu \
+; RUN: -mcpu=pwr10 -disable-output < %s 2>&1 | FileCheck %s
+
+define void @foo(ptr noalias %a, ptr noalias %b, ptr noalias %c, i64 %N) {
+; CHECK-LABEL: VPlan 'Initial VPlan for VF={2,4},UF>=1' {
+; CHECK-NEXT: Live-in vp<%0> = VF * UF
+; CHECK-NEXT: Live-in vp<%1> = vector-trip-count
+; CHECK-NEXT: Live-in vp<%2> = backedge-taken count
+; CHECK-NEXT: Live-in ir<%N> = original trip-count
+; CHECK-EMPTY:
+; CHECK-NEXT: vector.ph:
+; CHECK-NEXT: Successor(s): vector loop
+; CHECK-EMPTY:
+; CHECK-NEXT: <x1> vector loop: {
+; CHECK-NEXT:   vector.body:
+; CHECK-NEXT:     EMIT vp<%3> = CANONICAL-INDUCTION ir<0>, vp<%16>
+; CHECK-NEXT:     WIDEN-INDUCTION %iv = phi 0, %iv.next, ir<1>
+; CHECK-NEXT:     EMIT vp<%5> = icmp ule ir<%iv>, vp<%2>
+; CHECK-NEXT:   Successor(s): pred.store
+; CHECK-EMPTY:
+; CHECK-NEXT:  <xVFxUF> pred.store: {
+; CHECK-NEXT:    pred.store.entry:
+; CHECK-NEXT:      BRANCH-ON-MASK vp<%5>
+; CHECK-NEXT:    Successor(s): pred.store.if, pred.store.continue
+; CHECK-EMPTY:
+; CHECK-NEXT:    pred.store.if:
+; CHECK-NEXT:      vp<%6> = SCALAR-STEPS vp<%3>, ir<1>
+; CHECK-NEXT:      REPLICATE ir<%arrayidx> = getelementptr inbounds ir<%b>, vp<%6>
+; CHECK-NEXT:      REPLICATE ir<%0> = load ir<%arrayidx>
+; CHECK-NEXT:      REPLICATE ir<%arrayidx2> = getelementptr inbounds ir<%c>, vp<%6>
+; CHECK-NEXT:      REPLICATE ir<%1> = load ir<%arrayidx2>
+; CHECK-NEXT:      REPLICATE ir<%arrayidx4> = getelementptr inbounds ir<%a>, vp<%6>
+; CHECK-NEXT:      REPLICATE ir<%add> = add nsw ir<%1>, ir<%0>
+; CHECK-NEXT:      REPLICATE store ir<%add>, ir<%arrayidx4>
+; CHECK-NEXT:    Successor(s): pred.store.continue
+; CHECK-EMPTY:
+; CHECK-NEXT:    pred.store.continue:
+; CHECK-NEXT:      PHI-PREDICATED-INSTRUCTION vp<%14> = ir<%0>
+; CHECK-NEXT:      PHI-PREDICATED-INSTRUCTION vp<%15> = ir<%1>
+; CHECK-NEXT:    No successors
+; CHECK-NEXT:  }
+; CHECK-NEXT:  Successor(s): for.body.2
+; CHECK-EMPTY:
+; CHECK-NEXT:  for.body.2:
+; CHECK-NEXT:     EMIT vp<%16> = add vp<%3>, vp<%0>
+; CHECK-NEXT:     EMIT branch-on-count vp<%16>, vp<%1>
+; CHECK-NEXT:   No successors
+; CHECK-NEXT: }
+;
+entry:
+  br label %for.body
+
+for.body:
+  %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
+  %arrayidx = getelementptr inbounds i32, ptr %b, i64 %iv
+  %0 = load i32, ptr %arrayidx, align 4
+  %arrayidx2 = getelementptr inbounds i32, ptr %c, i64 %iv
+  %1 = load i32, ptr %arrayidx2, align 4
+  %add = add nsw i32 %1, %0
+  %arrayidx4 = getelementptr inbounds i32, ptr %a, i64 %iv
+  store i32 %add, ptr %arrayidx4, align 4
+  %iv.next = add nuw nsw i64 %iv, 1
+  %exitcond.not = icmp eq i64 %iv.next, %N
+  br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
+
+for.cond.cleanup:
+  ret void
+}
+
+define void @safe_dep(ptr %p) {
+; CHECK-LABEL: VPlan 'Initial VPlan for VF={2},UF>=1' {
+; CHECK-NEXT: Live-in vp<%0> = VF * UF
+; CHECK-NEXT: Live-in vp<%1> = vector-trip-count
+; CHECK-NEXT: Live-in ir<512> = original trip-count
+; CHECK-EMPTY:
+; CHECK-NEXT: vector.ph:
+; CHECK-NEXT: Successor(s): vector loop
+; CHECK-EMPTY:
+; CHECK-NEXT: <x1> vector loop: {
+; CHECK-NEXT:   vector.body:
+; CHECK-NEXT:     EMIT vp<%2> = CANONICAL-INDUCTION ir<0>, vp<%10>
+; CHECK-NEXT:     vp<%3> = SCALAR-STEPS vp<%2>, ir<1>
+; CHECK-NEXT:     CLONE ir<%a1> = getelementptr ir<%p>, vp<%3>
+; CHECK-NEXT:     vp<%5> = vector-pointer ir<%a1>
+; CHECK-NEXT:     WIDEN ir<%v> = load vp<%5>
+; CHECK-NEXT:     CLONE ir<%offset> = add vp<%3>, ir<100>
+; CHECK-NEXT:     CLONE ir<%a2> = getelementptr ir<%p>, ir<%offset>
+; CHECK-NEXT:     vp<%9> = vector-pointer ir<%a2>
+; CHECK-NEXT:     WIDEN store vp<%9>, ir<%v>
+; CHECK-NEXT:     EMIT vp<%10> = add nuw vp<%2>, vp<%0>
+; CHECK-NEXT:     EMIT branch-on-count vp<%10>, vp<%1>
+; CHECK-NEXT:   No successors
+; CHECK-NEXT: }
+;
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i64 [0, %entry], [%iv.next, %loop]
+  %a1 = getelementptr i64, ptr %p, i64 %iv
+  %v = load i64, ptr %a1, align 32
+  %offset = add i64 %iv, 100
+  %a2 = getelementptr i64, ptr %p, i64 %offset
+  store i64 %v, ptr %a2, align 32
+  %iv.next = add i64 %iv, 1
+  %cmp = icmp ne i64 %iv, 511
+  br i1 %cmp, label %loop, label %exit
+
+exit:
+  ret void
+}
+