[LV] Replace value numbers with patterns in tests (NFC).

 Replace some hardcoded value numbers in CHECK-LINES to use patterns, to
 make the tests more robust wrt renumbering.

Author: fhahn

llvm/test/Transforms/LoopVectorize/RISCV/riscv-vector-reverse.ll

@@ -51,7 +51,7 @@ define void @vector_reverse_i64(ptr nocapture noundef writeonly %A, ptr nocaptur
 ; CHECK-NEXT:  LV: Scalarizing: %cmp = icmp ugt i64 %indvars.iv, 1
 ; CHECK-NEXT:  LV: Scalarizing: %indvars.iv.next = add nsw i64 %indvars.iv, -1
 ; CHECK-NEXT:  VPlan 'Initial VPlan for VF={vscale x 4},UF>=1' {
-; CHECK-NEXT:  Live-in vp<%0> = vector-trip-count
+; CHECK-NEXT:  Live-in vp<[[VEC_TC:%.+]]> = vector-trip-count
 ; CHECK-NEXT:  vp<%1> = original trip-count
 ; CHECK:       ph:
 ; CHECK-NEXT:    EMIT vp<%1> = EXPAND SCEV (zext i32 %n to i64)
@@ -60,18 +60,18 @@ define void @vector_reverse_i64(ptr nocapture noundef writeonly %A, ptr nocaptur
 ; CHECK-NEXT:  Successor(s): vector loop
 ; CHECK:       <x1> vector loop: {
 ; CHECK-NEXT:    vector.body:
-; CHECK-NEXT:    EMIT vp<%2> = CANONICAL-INDUCTION
-; CHECK-NEXT:    vp<%3> = DERIVED-IV ir<%n> + vp<%2> * ir<-1>
-; CHECK-NEXT:    vp<%4> = SCALAR-STEPS vp<%3>, ir<-1>
-; CHECK-NEXT:    CLONE ir<%i.0> = add nsw vp<%4>, ir<-1>
+; CHECK-NEXT:    EMIT vp<[[CAN_IV:%.+]]> = CANONICAL-INDUCTION
+; CHECK-NEXT:    vp<[[DERIVED_IV:%.+]]> = DERIVED-IV ir<%n> + vp<[[CAN_IV]]> * ir<-1>
+; CHECK-NEXT:    vp<[[STEPS:%.+]]> = SCALAR-STEPS vp<[[DERIVED_IV]]>, ir<-1>
+; CHECK-NEXT:    CLONE ir<%i.0> = add nsw vp<[[STEPS]]>, ir<-1>
 ; CHECK-NEXT:    CLONE ir<%idxprom> = zext ir<%i.0>
 ; CHECK-NEXT:    CLONE ir<%arrayidx> = getelementptr inbounds ir<%B>, ir<%idxprom>
 ; CHECK-NEXT:    WIDEN ir<%1> = load ir<%arrayidx>
 ; CHECK-NEXT:    WIDEN ir<%add9> = add ir<%1>, ir<1>
 ; CHECK-NEXT:    CLONE ir<%arrayidx3> = getelementptr inbounds ir<%A>, ir<%idxprom>
 ; CHECK-NEXT:    WIDEN store ir<%arrayidx3>, ir<%add9>
-; CHECK-NEXT:    EMIT vp<%11> = VF * UF + nuw vp<%2>
-; CHECK-NEXT:    EMIT branch-on-count vp<%11>, vp<%0>
+; CHECK-NEXT:    EMIT vp<[[IV_INC:%.+]]> = VF * UF + nuw vp<[[CAN_IV]]>
+; CHECK-NEXT:    EMIT branch-on-count vp<[[IV_INC]]>, vp<[[VEC_TC]]>
 ; CHECK-NEXT:    No successors
 ; CHECK-NEXT:  }
 ; CHECK-NEXT:  Successor(s): middle.block
@@ -188,7 +188,7 @@ define void @vector_reverse_f32(ptr nocapture noundef writeonly %A, ptr nocaptur
 ; CHECK-NEXT:  LV: Scalarizing: %cmp = icmp ugt i64 %indvars.iv, 1
 ; CHECK-NEXT:  LV: Scalarizing: %indvars.iv.next = add nsw i64 %indvars.iv, -1
 ; CHECK-NEXT:  VPlan 'Initial VPlan for VF={vscale x 4},UF>=1' {
-; CHECK-NEXT:  Live-in vp<%0> = vector-trip-count
+; CHECK-NEXT:  Live-in vp<[[VEC_TC:%.+]]> = vector-trip-count
 ; CHECK-NEXT:  vp<%1> = original trip-count
 ; CHECK:       ph:
 ; CHECK-NEXT:    EMIT vp<%1> = EXPAND SCEV (zext i32 %n to i64)
@@ -197,18 +197,18 @@ define void @vector_reverse_f32(ptr nocapture noundef writeonly %A, ptr nocaptur
 ; CHECK-NEXT:  Successor(s): vector loop
 ; CHECK:       <x1> vector loop: {
 ; CHECK-NEXT:    vector.body:
-; CHECK-NEXT:    EMIT vp<%2> = CANONICAL-INDUCTION
-; CHECK-NEXT:    vp<%3> = DERIVED-IV ir<%n> + vp<%2> * ir<-1>
-; CHECK-NEXT:    vp<%4> = SCALAR-STEPS vp<%3>, ir<-1>
-; CHECK-NEXT:    CLONE ir<%i.0> = add nsw vp<%4>, ir<-1>
+; CHECK-NEXT:    EMIT vp<[[CAN_IV:%.+]]> = CANONICAL-INDUCTION
+; CHECK-NEXT:    vp<[[DERIVED_IV:%.+]]> = DERIVED-IV ir<%n> + vp<[[CAN_IV]]> * ir<-1>
+; CHECK-NEXT:    vp<[[STEPS]]> = SCALAR-STEPS vp<[[DERIVED_IV]]>, ir<-1>
+; CHECK-NEXT:    CLONE ir<%i.0> = add nsw vp<[[STEPS]]>, ir<-1>
 ; CHECK-NEXT:    CLONE ir<%idxprom> = zext ir<%i.0>
 ; CHECK-NEXT:    CLONE ir<%arrayidx> = getelementptr inbounds ir<%B>, ir<%idxprom>
 ; CHECK-NEXT:    WIDEN ir<%1> = load ir<%arrayidx>
 ; CHECK-NEXT:    WIDEN ir<%conv1> = fadd ir<%1>, ir<1.000000e+00>
 ; CHECK-NEXT:    CLONE ir<%arrayidx3> = getelementptr inbounds ir<%A>, ir<%idxprom>
 ; CHECK-NEXT:    WIDEN store ir<%arrayidx3>, ir<%conv1>
-; CHECK-NEXT:    EMIT vp<%11> = VF * UF + nuw vp<%2>
-; CHECK-NEXT:    EMIT branch-on-count vp<%11>, vp<%0>
+; CHECK-NEXT:    EMIT vp<[[IV_INC:%.+]]> = VF * UF + nuw vp<[[CAN_IV]]>
+; CHECK-NEXT:    EMIT branch-on-count vp<[[IV_INC]]>, vp<[[VEC_TC]]>
 ; CHECK-NEXT:    No successors
 ; CHECK-NEXT:  }
 ; CHECK-NEXT:  Successor(s): middle.block

llvm/test/Transforms/LoopVectorize/vplan-printing.ll

@@ -691,7 +691,7 @@ define void @print_call_flags(ptr readonly %src, ptr noalias %dest, i64 %n) {
 ; CHECK-NEXT: vector.body:
 ; CHECK-NEXT:   EMIT vp<[[CAN_IV:%.+]]> = CANONICAL-INDUCTION
 ; CHECK-NEXT:   vp<[[STEPS:%.+]]> = SCALAR-STEPS vp<[[CAN_IV]]>, ir<1>
-; CHECK-NEXT:   CLONE ir<%ld.addr> = getelementptr inbounds ir<%src>, vp<%2>
+; CHECK-NEXT:   CLONE ir<%ld.addr> = getelementptr inbounds ir<%src>, vp<[[STEPS]]>
 ; CHECK-NEXT:   WIDEN ir<%ld.value> = load ir<%ld.addr>
 ; CHECK-NEXT:   WIDEN ir<%ifcond> = fcmp oeq ir<%ld.value>, ir<5.000000e+00>
 ; CHECK-NEXT:  Successor(s): pred.call
@@ -707,17 +707,17 @@ define void @print_call_flags(ptr readonly %src, ptr noalias %dest, i64 %n) {
 ; CHECK-NEXT:    Successor(s): pred.call.continue
 ; CHECK-EMPTY:
 ; CHECK-NEXT:    pred.call.continue:
-; CHECK-NEXT:      PHI-PREDICATED-INSTRUCTION vp<%8> = ir<%foo.ret.1>
-; CHECK-NEXT:      PHI-PREDICATED-INSTRUCTION vp<%9> = ir<%foo.ret.2>
+; CHECK-NEXT:      PHI-PREDICATED-INSTRUCTION vp<[[PHI1:%.+]]> = ir<%foo.ret.1>
+; CHECK-NEXT:      PHI-PREDICATED-INSTRUCTION vp<[[PHI2:%.+]]> = ir<%foo.ret.2>
 ; CHECK-NEXT:    No successors
 ; CHECK-NEXT:  }
 ; CHECK-NEXT:  Successor(s): if.then.1
 ; CHECK-EMPTY:
 ; CHECK-NEXT:  if.then.1:
-; CHECK-NEXT:    WIDEN ir<%fadd> = fadd vp<%8>, vp<%9>
-; CHECK-NEXT:    EMIT vp<%11> = not ir<%ifcond>
-; CHECK-NEXT:    BLEND ir<%st.value> = ir<%ld.value>/vp<%11> ir<%fadd>/ir<%ifcond>
-; CHECK-NEXT:    CLONE ir<%st.addr> = getelementptr inbounds ir<%dest>, vp<%2>
+; CHECK-NEXT:    WIDEN ir<%fadd> = fadd vp<[[PHI1]]>, vp<[[PHI2]]>
+; CHECK-NEXT:    EMIT vp<[[NOT_COND:%.+]]> = not ir<%ifcond>
+; CHECK-NEXT:    BLEND ir<%st.value> = ir<%ld.value>/vp<[[NOT_COND]]> ir<%fadd>/ir<%ifcond>
+; CHECK-NEXT:    CLONE ir<%st.addr> = getelementptr inbounds ir<%dest>, vp<[[STEPS]]>
 ; CHECK-NEXT:    WIDEN store ir<%st.addr>, ir<%st.value>
 ; CHECK-NEXT:   EMIT vp<[[CAN_IV_NEXT:%.+]]> = VF * UF + nuw vp<[[CAN_IV]]>
 ; CHECK-NEXT:   EMIT branch-on-count vp<[[CAN_IV_NEXT]]>, vp<[[VEC_TC]]>