[llvm] [LV][VPlan] Reduce register usage of VPEVLBasedIVPHIRecipe. (PR #154482)

[Luke Lau via llvm-commits]

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@@ -0,0 +1,37 @@
+; REQUIRES: asserts
+; RUN: opt -passes=loop-vectorize -mtriple riscv64 -mattr=+v -vectorizer-maximize-bandwidth -debug-only=loop-vectorize,vplan -disable-output -S < %s 2>&1 | FileCheck %s --check-prefixes=CHECK-REGS-VP
+; RUN: opt -passes=loop-vectorize -mtriple riscv64 -mattr=+v -vectorizer-maximize-bandwidth -debug-only=loop-vectorize -disable-output -force-target-num-vector-regs=1 -S < %s 2>&1 | FileCheck %s --check-prefixes=CHECK-NOREGS-VP
+define i32 @dotp(ptr %a, ptr %b) {
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lukel97 wrote:

Nit, should probably have an extra newline
```suggestion

define i32 @dotp(ptr %a, ptr %b) {
```

https://github.com/llvm/llvm-project/pull/154482