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llvm-project/llvm/test/Transforms/LoopVectorize/RISCV/riscv-vector-reverse.ll
David Sherwood 72f339de45
[LoopVectorize] Use predicated version of getSmallConstantMaxTripCount (#109928) 
There are a number of places where we call getSmallConstantMaxTripCount
without passing a vector of predicates:

getSmallBestKnownTC
isIndvarOverflowCheckKnownFalse
computeMaxVF
isMoreProfitable

I've changed all of these to now pass in a predicate vector so that
we get the benefit of making better vectorisation choices when we
know the max trip count for loops that require SCEV predicate checks.

I've tried to add tests that cover all the cases affected by these
changes.
2024-10-11 10:10:15 +01:00

426 lines
25 KiB
LLVM
Raw Blame History

; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
; This is the loop in c++ being vectorize in this file with
;vector.reverse
; #pragma clang loop vectorize_width(4, scalable)
; for (int i = N-1; i >= 0; --i)
; a[i] = b[i] + 1.0;
; REQUIRES: asserts
; RUN: opt -passes=loop-vectorize,dce,instcombine -mtriple riscv64-linux-gnu \
; RUN: -mattr=+v -debug-only=loop-vectorize -scalable-vectorization=on \
; RUN: -riscv-v-vector-bits-min=128 -disable-output < %s 2>&1 | FileCheck %s
define void @vector_reverse_i64(ptr nocapture noundef writeonly %A, ptr nocapture noundef readonly %B, i32 noundef signext %n) {
; CHECK-LABEL: 'vector_reverse_i64'
; CHECK-NEXT: LV: Loop hints: force=enabled width=vscale x 4 interleave=0
; CHECK-NEXT: LV: Found a loop: for.body
; CHECK-NEXT: LV: Found an induction variable.
; CHECK-NEXT: LV: Found an induction variable.
; CHECK-NEXT: LV: Did not find one integer induction var.
; CHECK-NEXT: LV: We can vectorize this loop (with a runtime bound check)!
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Found trip count: 0
; CHECK-NEXT: LV: Found maximum trip count: 4294967295
; CHECK-NEXT: LV: Scalable vectorization is available
; CHECK-NEXT: LV: The max safe fixed VF is: 67108864.
; CHECK-NEXT: LV: The max safe scalable VF is: vscale x 4294967295.
; CHECK-NEXT: LV: Found uniform instruction: %cmp = icmp ugt i64 %indvars.iv, 1
; CHECK-NEXT: LV: Found uniform instruction: %arrayidx = getelementptr inbounds i32, ptr %B, i64 %idxprom
; CHECK-NEXT: LV: Found uniform instruction: %arrayidx3 = getelementptr inbounds i32, ptr %A, i64 %idxprom
; CHECK-NEXT: LV: Found uniform instruction: %idxprom = zext i32 %i.0 to i64
; CHECK-NEXT: LV: Found uniform instruction: %idxprom = zext i32 %i.0 to i64
; CHECK-NEXT: LV: Found uniform instruction: %indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
; CHECK-NEXT: LV: Found uniform instruction: %indvars.iv.next = add nsw i64 %indvars.iv, -1
; CHECK-NEXT: LV: Found uniform instruction: %i.0.in8 = phi i32 [ %n, %for.body.preheader ], [ %i.0, %for.body ]
; CHECK-NEXT: LV: Found uniform instruction: %i.0 = add nsw i32 %i.0.in8, -1
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %i.0.in8 = phi i32 [ %n, %for.body.preheader ], [ %i.0, %for.body ]
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %i.0 = add nsw i32 %i.0.in8, -1
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %idxprom = zext i32 %i.0 to i64
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %arrayidx = getelementptr inbounds i32, ptr %B, i64 %idxprom
; CHECK-NEXT: LV: Found an estimated cost of 13 for VF vscale x 4 For instruction: %1 = load i32, ptr %arrayidx, align 4
; CHECK-NEXT: LV: Found an estimated cost of 2 for VF vscale x 4 For instruction: %add9 = add i32 %1, 1
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %arrayidx3 = getelementptr inbounds i32, ptr %A, i64 %idxprom
; CHECK-NEXT: LV: Found an estimated cost of 13 for VF vscale x 4 For instruction: store i32 %add9, ptr %arrayidx3, align 4
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %cmp = icmp ugt i64 %indvars.iv, 1
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %indvars.iv.next = add nsw i64 %indvars.iv, -1
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit, !llvm.loop !0
; CHECK-NEXT: LV: Using user VF vscale x 4.
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Scalarizing: %i.0 = add nsw i32 %i.0.in8, -1
; CHECK-NEXT: LV: Scalarizing: %idxprom = zext i32 %i.0 to i64
; CHECK-NEXT: LV: Scalarizing: %arrayidx = getelementptr inbounds i32, ptr %B, i64 %idxprom
; CHECK-NEXT: LV: Scalarizing: %arrayidx3 = getelementptr inbounds i32, ptr %A, i64 %idxprom
; 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<[[VFxUF:%.+]]> = VF * UF
; CHECK-NEXT: Live-in vp<[[VEC_TC:%.+]]> = vector-trip-count
; CHECK-NEXT: vp<[[TC:%.+]]> = original trip-count
; CHECK-EMPTY:
; CHECK-NEXT: ir-bb<for.body.preheader>:
; CHECK-NEXT: IR %0 = zext i32 %n to i64
; CHECK-NEXT: EMIT vp<[[TC]]> = EXPAND SCEV (zext i32 %n to i64)
; CHECK-NEXT: No successors
; 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<[[CAN_IV:%.+]]> = CANONICAL-INDUCTION
; CHECK-NEXT: vp<[[DEV_IV:%.+]]> = DERIVED-IV ir<%n> + vp<[[CAN_IV]]> * ir<-1>
; CHECK-NEXT: vp<[[STEPS:%.+]]> = SCALAR-STEPS vp<[[DEV_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: vp<[[VEC_PTR:%.+]]> = vector-pointer (reverse) ir<%arrayidx>
; CHECK-NEXT: WIDEN ir<%1> = load vp<[[VEC_PTR]]>
; CHECK-NEXT: WIDEN ir<%add9> = add ir<%1>, ir<1>
; CHECK-NEXT: CLONE ir<%arrayidx3> = getelementptr inbounds ir<%A>, ir<%idxprom>
; CHECK-NEXT: vp<[[VEC_PTR2:%.+]]> = vector-pointer (reverse) ir<%arrayidx3>
; CHECK-NEXT: WIDEN store vp<[[VEC_PTR2]]>, ir<%add9>
; CHECK-NEXT: EMIT vp<[[CAN_IV_NEXT:%.+]]> = add nuw vp<[[CAN_IV]]>, vp<[[VFxUF]]>
; CHECK-NEXT: EMIT branch-on-count vp<[[CAN_IV_NEXT]]>, vp<[[VEC_TC]]>
; CHECK-NEXT: No successors
; CHECK-NEXT: }
; CHECK-NEXT: Successor(s): middle.block
; CHECK-EMPTY:
; CHECK-NEXT: middle.block:
; CHECK-NEXT: EMIT vp<[[CMP:%.+]]> = icmp eq vp<[[TC]]>, vp<[[VEC_TC]]>
; CHECK-NEXT: EMIT branch-on-cond vp<[[CMP]]>
; CHECK-NEXT: Successor(s): ir-bb<for.cond.cleanup.loopexit>, scalar.ph
; CHECK-EMPTY:
; CHECK-NEXT: ir-bb<for.cond.cleanup.loopexit>:
; CHECK-NEXT: No successors
; CHECK-EMPTY:
; CHECK-NEXT: scalar.ph:
; CHECK-NEXT: No successors
; CHECK-NEXT: }
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %i.0.in8 = phi i32 [ %n, %for.body.preheader ], [ %i.0, %for.body ]
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %i.0 = add nsw i32 %i.0.in8, -1
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %idxprom = zext i32 %i.0 to i64
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %arrayidx = getelementptr inbounds i32, ptr %B, i64 %idxprom
; CHECK-NEXT: LV: Found an estimated cost of 13 for VF vscale x 4 For instruction: %1 = load i32, ptr %arrayidx, align 4
; CHECK-NEXT: LV: Found an estimated cost of 2 for VF vscale x 4 For instruction: %add9 = add i32 %1, 1
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %arrayidx3 = getelementptr inbounds i32, ptr %A, i64 %idxprom
; CHECK-NEXT: LV: Found an estimated cost of 13 for VF vscale x 4 For instruction: store i32 %add9, ptr %arrayidx3, align 4
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %cmp = icmp ugt i64 %indvars.iv, 1
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %indvars.iv.next = add nsw i64 %indvars.iv, -1
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit, !llvm.loop !0
; CHECK-NEXT: LV(REG): Calculating max register usage:
; CHECK-NEXT: LV(REG): At #0 Interval # 0
; CHECK-NEXT: LV(REG): At #1 Interval # 1
; CHECK-NEXT: LV(REG): At #2 Interval # 2
; CHECK-NEXT: LV(REG): At #3 Interval # 2
; CHECK-NEXT: LV(REG): At #4 Interval # 2
; CHECK-NEXT: LV(REG): At #5 Interval # 3
; CHECK-NEXT: LV(REG): At #6 Interval # 3
; CHECK-NEXT: LV(REG): At #7 Interval # 3
; CHECK-NEXT: LV(REG): At #9 Interval # 1
; CHECK-NEXT: LV(REG): At #10 Interval # 2
; CHECK-NEXT: LV(REG): VF = vscale x 4
; CHECK-NEXT: LV(REG): Found max usage: 2 item
; CHECK-NEXT: LV(REG): RegisterClass: RISCV::GPRRC, 3 registers
; CHECK-NEXT: LV(REG): RegisterClass: RISCV::VRRC, 2 registers
; CHECK-NEXT: LV(REG): Found invariant usage: 1 item
; CHECK-NEXT: LV(REG): RegisterClass: RISCV::GPRRC, 1 registers
; CHECK-NEXT: LV: The target has 31 registers of RISCV::GPRRC register class
; CHECK-NEXT: LV: The target has 32 registers of RISCV::VRRC register class
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Loop cost is 32
; CHECK-NEXT: LV: IC is 1
; CHECK-NEXT: LV: VF is vscale x 4
; CHECK-NEXT: LV: Not Interleaving.
; CHECK-NEXT: LV: Interleaving is not beneficial.
; CHECK-NEXT: LV: Found a vectorizable loop (vscale x 4) in <stdin>
; CHECK-NEXT: LEV: Epilogue vectorization is not profitable for this loop
; CHECK-NEXT: Executing best plan with VF=vscale x 4, UF=1
; CHECK-NEXT: VPlan 'Final VPlan for VF={vscale x 4},UF={1}' {
; CHECK-NEXT: Live-in vp<[[VFxUF:%.+]]> = VF * UF
; CHECK-NEXT: Live-in vp<[[VEC_TC:%.+]]> = vector-trip-count
; CHECK-NEXT: vp<[[TC:%.+]]> = original trip-count
; CHECK-EMPTY:
; CHECK-NEXT: ir-bb<for.body.preheader>:
; CHECK-NEXT: IR %0 = zext i32 %n to i64
; CHECK-NEXT: EMIT vp<[[TC]]> = EXPAND SCEV (zext i32 %n to i64)
; CHECK-NEXT: No successors
; 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<[[CAN_IV:%.+]]> = CANONICAL-INDUCTION
; CHECK-NEXT: vp<[[DEV_IV:%.+]]> = DERIVED-IV ir<%n> + vp<[[CAN_IV]]> * ir<-1>
; CHECK-NEXT: vp<[[STEPS:%.+]]> = SCALAR-STEPS vp<[[DEV_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: vp<[[VEC_PTR:%.+]]> = vector-pointer (reverse) ir<%arrayidx>
; CHECK-NEXT: WIDEN ir<%13> = load vp<[[VEC_PTR]]>
; CHECK-NEXT: WIDEN ir<%add9> = add ir<%13>, ir<1>
; CHECK-NEXT: CLONE ir<%arrayidx3> = getelementptr inbounds ir<%A>, ir<%idxprom>
; CHECK-NEXT: vp<[[VEC_PTR2:%.+]]> = vector-pointer (reverse) ir<%arrayidx3>
; CHECK-NEXT: WIDEN store vp<[[VEC_PTR2]]>, ir<%add9>
; CHECK-NEXT: EMIT vp<[[CAN_IV_NEXT:%.+]]> = add nuw vp<[[CAN_IV]]>, vp<[[VFxUF]]>
; CHECK-NEXT: EMIT branch-on-count vp<[[CAN_IV_NEXT]]>, vp<[[VEC_TC]]>
; CHECK-NEXT: No successors
; CHECK-NEXT: }
; CHECK-NEXT: Successor(s): middle.block
; CHECK-EMPTY:
; CHECK-NEXT: middle.block:
; CHECK-NEXT: EMIT vp<[[CMP:%.+]]> = icmp eq vp<[[TC]]>, vp<[[VEC_TC]]>
; CHECK-NEXT: EMIT branch-on-cond vp<[[CMP]]>
; CHECK-NEXT: Successor(s): ir-bb<for.cond.cleanup.loopexit>, scalar.ph
; CHECK-EMPTY:
; CHECK-NEXT: ir-bb<for.cond.cleanup.loopexit>:
; CHECK-NEXT: No successors
; CHECK-EMPTY:
; CHECK-NEXT: scalar.ph:
; CHECK-NEXT: No successors
; CHECK-NEXT: }
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Interleaving disabled by the pass manager
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Vectorizing: innermost loop.
; CHECK-EMPTY:
;
entry:
%cmp7 = icmp sgt i32 %n, 0
br i1 %cmp7, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader: ; preds = %entry
%0 = zext i32 %n to i64
br label %for.body
for.cond.cleanup: ; preds = %for.body, %entry
ret void
for.body: ; preds = %for.body.preheader, %for.body
%indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
%i.0.in8 = phi i32 [ %n, %for.body.preheader ], [ %i.0, %for.body ]
%i.0 = add nsw i32 %i.0.in8, -1
%idxprom = zext i32 %i.0 to i64
%arrayidx = getelementptr inbounds i32, ptr %B, i64 %idxprom
%1 = load i32, ptr %arrayidx, align 4
%add9 = add i32 %1, 1
%arrayidx3 = getelementptr inbounds i32, ptr %A, i64 %idxprom
store i32 %add9, ptr %arrayidx3, align 4
%cmp = icmp ugt i64 %indvars.iv, 1
%indvars.iv.next = add nsw i64 %indvars.iv, -1
br i1 %cmp, label %for.body, label %for.cond.cleanup, !llvm.loop !0
}
define void @vector_reverse_f32(ptr nocapture noundef writeonly %A, ptr nocapture noundef readonly %B, i32 noundef signext %n) {
; CHECK-LABEL: 'vector_reverse_f32'
; CHECK-NEXT: LV: Loop hints: force=enabled width=vscale x 4 interleave=0
; CHECK-NEXT: LV: Found a loop: for.body
; CHECK-NEXT: LV: Found an induction variable.
; CHECK-NEXT: LV: Found an induction variable.
; CHECK-NEXT: LV: Found FP op with unsafe algebra.
; CHECK-NEXT: LV: Did not find one integer induction var.
; CHECK-NEXT: LV: We can vectorize this loop (with a runtime bound check)!
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Found trip count: 0
; CHECK-NEXT: LV: Found maximum trip count: 4294967295
; CHECK-NEXT: LV: Scalable vectorization is available
; CHECK-NEXT: LV: The max safe fixed VF is: 67108864.
; CHECK-NEXT: LV: The max safe scalable VF is: vscale x 4294967295.
; CHECK-NEXT: LV: Found uniform instruction: %cmp = icmp ugt i64 %indvars.iv, 1
; CHECK-NEXT: LV: Found uniform instruction: %arrayidx = getelementptr inbounds float, ptr %B, i64 %idxprom
; CHECK-NEXT: LV: Found uniform instruction: %arrayidx3 = getelementptr inbounds float, ptr %A, i64 %idxprom
; CHECK-NEXT: LV: Found uniform instruction: %idxprom = zext i32 %i.0 to i64
; CHECK-NEXT: LV: Found uniform instruction: %idxprom = zext i32 %i.0 to i64
; CHECK-NEXT: LV: Found uniform instruction: %indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
; CHECK-NEXT: LV: Found uniform instruction: %indvars.iv.next = add nsw i64 %indvars.iv, -1
; CHECK-NEXT: LV: Found uniform instruction: %i.0.in8 = phi i32 [ %n, %for.body.preheader ], [ %i.0, %for.body ]
; CHECK-NEXT: LV: Found uniform instruction: %i.0 = add nsw i32 %i.0.in8, -1
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %i.0.in8 = phi i32 [ %n, %for.body.preheader ], [ %i.0, %for.body ]
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %i.0 = add nsw i32 %i.0.in8, -1
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %idxprom = zext i32 %i.0 to i64
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %arrayidx = getelementptr inbounds float, ptr %B, i64 %idxprom
; CHECK-NEXT: LV: Found an estimated cost of 13 for VF vscale x 4 For instruction: %1 = load float, ptr %arrayidx, align 4
; CHECK-NEXT: LV: Found an estimated cost of 4 for VF vscale x 4 For instruction: %conv1 = fadd float %1, 1.000000e+00
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %arrayidx3 = getelementptr inbounds float, ptr %A, i64 %idxprom
; CHECK-NEXT: LV: Found an estimated cost of 13 for VF vscale x 4 For instruction: store float %conv1, ptr %arrayidx3, align 4
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %cmp = icmp ugt i64 %indvars.iv, 1
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %indvars.iv.next = add nsw i64 %indvars.iv, -1
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit, !llvm.loop !0
; CHECK-NEXT: LV: Using user VF vscale x 4.
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Scalarizing: %i.0 = add nsw i32 %i.0.in8, -1
; CHECK-NEXT: LV: Scalarizing: %idxprom = zext i32 %i.0 to i64
; CHECK-NEXT: LV: Scalarizing: %arrayidx = getelementptr inbounds float, ptr %B, i64 %idxprom
; CHECK-NEXT: LV: Scalarizing: %arrayidx3 = getelementptr inbounds float, ptr %A, i64 %idxprom
; 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<[[VFxUF:%.+]]> = VF * UF
; CHECK-NEXT: Live-in vp<[[VEC_TC:%.+]]> = vector-trip-count
; CHECK-NEXT: vp<[[TC:%.+]]> = original trip-count
; CHECK-EMPTY:
; CHECK-NEXT: ir-bb<for.body.preheader>:
; CHECK-NEXT: IR %0 = zext i32 %n to i64
; CHECK-NEXT: EMIT vp<[[TC]]> = EXPAND SCEV (zext i32 %n to i64)
; CHECK-NEXT: No successors
; 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<[[CAN_IV:%.+]]> = CANONICAL-INDUCTION
; CHECK-NEXT: vp<[[DEV_IV:%.+]]> = DERIVED-IV ir<%n> + vp<[[CAN_IV]]> * ir<-1>
; CHECK-NEXT: vp<[[STEPS:%.+]]> = SCALAR-STEPS vp<[[DEV_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: vp<[[VEC_PTR:%.+]]> = vector-pointer (reverse) ir<%arrayidx>
; CHECK-NEXT: WIDEN ir<%1> = load vp<[[VEC_PTR]]>
; 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: vp<[[VEC_PTR2:%.+]]> = vector-pointer (reverse) ir<%arrayidx3>
; CHECK-NEXT: WIDEN store vp<[[VEC_PTR2]]>, ir<%conv1>
; CHECK-NEXT: EMIT vp<[[CAN_IV_NEXT:%.+]]> = add nuw vp<[[CAN_IV]]>, vp<[[VFxUF]]>
; CHECK-NEXT: EMIT branch-on-count vp<[[CAN_IV_NEXT]]>, vp<[[VEC_TC]]>
; CHECK-NEXT: No successors
; CHECK-NEXT: }
; CHECK-NEXT: Successor(s): middle.block
; CHECK-EMPTY:
; CHECK-NEXT: middle.block:
; CHECK-NEXT: EMIT vp<[[CMP:%.+]]> = icmp eq vp<[[TC]]>, vp<[[VEC_TC]]>
; CHECK-NEXT: EMIT branch-on-cond vp<[[CMP]]>
; CHECK-NEXT: Successor(s): ir-bb<for.cond.cleanup.loopexit>, scalar.ph
; CHECK-EMPTY:
; CHECK-NEXT: ir-bb<for.cond.cleanup.loopexit>:
; CHECK-NEXT: No successors
; CHECK-EMPTY:
; CHECK-NEXT: scalar.ph:
; CHECK-NEXT: No successors
; CHECK-NEXT: }
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %i.0.in8 = phi i32 [ %n, %for.body.preheader ], [ %i.0, %for.body ]
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %i.0 = add nsw i32 %i.0.in8, -1
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %idxprom = zext i32 %i.0 to i64
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %arrayidx = getelementptr inbounds float, ptr %B, i64 %idxprom
; CHECK-NEXT: LV: Found an estimated cost of 13 for VF vscale x 4 For instruction: %1 = load float, ptr %arrayidx, align 4
; CHECK-NEXT: LV: Found an estimated cost of 4 for VF vscale x 4 For instruction: %conv1 = fadd float %1, 1.000000e+00
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: %arrayidx3 = getelementptr inbounds float, ptr %A, i64 %idxprom
; CHECK-NEXT: LV: Found an estimated cost of 13 for VF vscale x 4 For instruction: store float %conv1, ptr %arrayidx3, align 4
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %cmp = icmp ugt i64 %indvars.iv, 1
; CHECK-NEXT: LV: Found an estimated cost of 1 for VF vscale x 4 For instruction: %indvars.iv.next = add nsw i64 %indvars.iv, -1
; CHECK-NEXT: LV: Found an estimated cost of 0 for VF vscale x 4 For instruction: br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit, !llvm.loop !0
; CHECK-NEXT: LV(REG): Calculating max register usage:
; CHECK-NEXT: LV(REG): At #0 Interval # 0
; CHECK-NEXT: LV(REG): At #1 Interval # 1
; CHECK-NEXT: LV(REG): At #2 Interval # 2
; CHECK-NEXT: LV(REG): At #3 Interval # 2
; CHECK-NEXT: LV(REG): At #4 Interval # 2
; CHECK-NEXT: LV(REG): At #5 Interval # 3
; CHECK-NEXT: LV(REG): At #6 Interval # 3
; CHECK-NEXT: LV(REG): At #7 Interval # 3
; CHECK-NEXT: LV(REG): At #9 Interval # 1
; CHECK-NEXT: LV(REG): At #10 Interval # 2
; CHECK-NEXT: LV(REG): VF = vscale x 4
; CHECK-NEXT: LV(REG): Found max usage: 2 item
; CHECK-NEXT: LV(REG): RegisterClass: RISCV::GPRRC, 3 registers
; CHECK-NEXT: LV(REG): RegisterClass: RISCV::VRRC, 2 registers
; CHECK-NEXT: LV(REG): Found invariant usage: 1 item
; CHECK-NEXT: LV(REG): RegisterClass: RISCV::GPRRC, 1 registers
; CHECK-NEXT: LV: The target has 31 registers of RISCV::GPRRC register class
; CHECK-NEXT: LV: The target has 32 registers of RISCV::VRRC register class
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Loop cost is 34
; CHECK-NEXT: LV: IC is 1
; CHECK-NEXT: LV: VF is vscale x 4
; CHECK-NEXT: LV: Not Interleaving.
; CHECK-NEXT: LV: Interleaving is not beneficial.
; CHECK-NEXT: LV: Found a vectorizable loop (vscale x 4) in <stdin>
; CHECK-NEXT: LEV: Epilogue vectorization is not profitable for this loop
; CHECK-NEXT: Executing best plan with VF=vscale x 4, UF=1
; CHECK-NEXT: VPlan 'Final VPlan for VF={vscale x 4},UF={1}' {
; CHECK-NEXT: Live-in vp<[[VFxUF:%.+]]> = VF * UF
; CHECK-NEXT: Live-in vp<[[VEC_TC:%.+]]> = vector-trip-count
; CHECK-NEXT: vp<[[TC:%.+]]> = original trip-count
; CHECK-EMPTY:
; CHECK-NEXT: ir-bb<for.body.preheader>:
; CHECK-NEXT: IR %0 = zext i32 %n to i64
; CHECK-NEXT: EMIT vp<[[TC]]> = EXPAND SCEV (zext i32 %n to i64)
; CHECK-NEXT: No successors
; 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<[[CAN_IV:%.+]]> = CANONICAL-INDUCTION
; CHECK-NEXT: vp<[[DEV_IV:%.+]]> = DERIVED-IV ir<%n> + vp<[[CAN_IV]]> * ir<-1>
; CHECK-NEXT: vp<[[STEPS:%.+]]> = SCALAR-STEPS vp<[[DEV_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: vp<[[VEC_PTR:%.+]]> = vector-pointer (reverse) ir<%arrayidx>
; CHECK-NEXT: WIDEN ir<%13> = load vp<[[VEC_PTR]]>
; CHECK-NEXT: WIDEN ir<%conv1> = fadd ir<%13>, ir<1.000000e+00>
; CHECK-NEXT: CLONE ir<%arrayidx3> = getelementptr inbounds ir<%A>, ir<%idxprom>
; CHECK-NEXT: vp<[[VEC_PTR:%.+]]> = vector-pointer (reverse) ir<%arrayidx3>
; CHECK-NEXT: WIDEN store vp<[[VEC_PTR]]>, ir<%conv1>
; CHECK-NEXT: EMIT vp<[[CAN_IV_NEXT:%.+]]> = add nuw vp<[[CAN_IV]]>, vp<[[VFxUF]]>
; CHECK-NEXT: EMIT branch-on-count vp<[[CAN_IV_NEXT]]>, vp<[[VEC_TC]]>
; CHECK-NEXT: No successors
; CHECK-NEXT: }
; CHECK-NEXT: Successor(s): middle.block
; CHECK-EMPTY:
; CHECK-NEXT: middle.block:
; CHECK-NEXT: EMIT vp<[[CMP:%.+]]> = icmp eq vp<[[TC]]>, vp<[[VEC_TC]]>
; CHECK-NEXT: EMIT branch-on-cond vp<[[CMP]]>
; CHECK-NEXT: Successor(s): ir-bb<for.cond.cleanup.loopexit>, scalar.ph
; CHECK-EMPTY:
; CHECK-NEXT: ir-bb<for.cond.cleanup.loopexit>:
; CHECK-NEXT: No successors
; CHECK-EMPTY:
; CHECK-NEXT: scalar.ph:
; CHECK-NEXT: No successors
; CHECK-NEXT: }
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Interleaving disabled by the pass manager
; CHECK-NEXT: LV: Loop does not require scalar epilogue
; CHECK-NEXT: LV: Vectorizing: innermost loop.
;
entry:
%cmp7 = icmp sgt i32 %n, 0
br i1 %cmp7, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader: ; preds = %entry
%0 = zext i32 %n to i64
br label %for.body
for.cond.cleanup: ; preds = %for.body, %entry
ret void
for.body: ; preds = %for.body.preheader, %for.body
%indvars.iv = phi i64 [ %0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
%i.0.in8 = phi i32 [ %n, %for.body.preheader ], [ %i.0, %for.body ]
%i.0 = add nsw i32 %i.0.in8, -1
%idxprom = zext i32 %i.0 to i64
%arrayidx = getelementptr inbounds float, ptr %B, i64 %idxprom
%1 = load float, ptr %arrayidx, align 4
%conv1 = fadd float %1, 1.000000e+00
%arrayidx3 = getelementptr inbounds float, ptr %A, i64 %idxprom
store float %conv1, ptr %arrayidx3, align 4
%cmp = icmp ugt i64 %indvars.iv, 1
%indvars.iv.next = add nsw i64 %indvars.iv, -1
br i1 %cmp, label %for.body, label %for.cond.cleanup, !llvm.loop !0
}
!0 = distinct !{!0, !1, !2, !3, !4}
!1 = !{!"llvm.loop.mustprogress"}
!2 = !{!"llvm.loop.vectorize.width", i32 4}
!3 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
!4 = !{!"llvm.loop.vectorize.enable", i1 true}
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