[llvm] [VPlan] Add support for VPWidenIntOrFpInductionRecipe in predicated D… (PR #115274)

[via llvm-commits]

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+; 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=riscv64 -mattr=+v -disable-output < %s 2>&1 | FileCheck %s
+
+; REQUIRES: asserts
+
+define void @test_wide_integer_induction(ptr noalias %a, i64 %N) {
+; CHECK: VPlan 'Initial VPlan for VF={vscale x 1,vscale x 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<%N> = original trip-count
+; CHECK-EMPTY:
+; CHECK-NEXT: vector.ph:
+; CHECK-NEXT:   WIDEN-INTRINSIC vp<%3> = callllvm.stepvector()
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LiqinWeng wrote:

callllvm.stepvector() --->call llvm.stepvector()

https://github.com/llvm/llvm-project/pull/115274