[llvm] [LV][NFC]Simplify the structure and improve message of safe distance analysis for scalable vectorization. (PR #99487)

[Alexey Bataev via llvm-commits]

https://github.com/alexey-bataev created https://github.com/llvm/llvm-project/pull/99487

None

>From a7e06759eb01dbed07e582b7c6a78cf7159d9702 Mon Sep 17 00:00:00 2001
From: Alexey Bataev <a.bataev at outlook.com>
Date: Thu, 18 Jul 2024 13:01:41 +0000
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20initia?=
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Created using spr 1.3.5
---
 llvm/lib/Transforms/Vectorize/LoopVectorize.cpp | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index 40919c944d21f..7ca798a8b2d89 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -4197,14 +4197,11 @@ bool LoopVectorizationCostModel::isScalableVectorizationAllowed() {
     return false;
   }
 
-  if (!Legal->isSafeForAnyVectorWidth()) {
-    std::optional<unsigned> MaxVScale = getMaxVScale(*TheFunction, TTI);
-    if (!MaxVScale) {
-      reportVectorizationInfo(
-          "The target does not provide maximum vscale value.",
-          "ScalableVFUnfeasible", ORE, TheLoop);
-      return false;
-    }
+  if (!Legal->isSafeForAnyVectorWidth() && !getMaxVScale(*TheFunction, TTI)) {
+    reportVectorizationInfo("The target does not provide maximum vscale value "
+                            "for safe distance analysis.",
+                            "ScalableVFUnfeasible", ORE, TheLoop);
+    return false;
   }
 
   IsScalableVectorizationAllowed = true;