From 975b1ddf60387139357c8cbbaeb613de5a39294f Mon Sep 17 00:00:00 2001 From: Nadav Rotem Date: Thu, 25 Apr 2013 19:55:03 +0000 Subject: LoopVectorizer: No need to generate pointer disambiguation checks between readonly pointers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180570 91177308-0d34-0410-b5e6-96231b3b80d8 --- .../LoopVectorize/runtime-check-readonly.ll | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 test/Transforms/LoopVectorize/runtime-check-readonly.ll (limited to 'test/Transforms/LoopVectorize/runtime-check-readonly.ll') diff --git a/test/Transforms/LoopVectorize/runtime-check-readonly.ll b/test/Transforms/LoopVectorize/runtime-check-readonly.ll new file mode 100644 index 0000000000..4145d134fd --- /dev/null +++ b/test/Transforms/LoopVectorize/runtime-check-readonly.ll @@ -0,0 +1,36 @@ +; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-apple-macosx10.8.0" + +;CHECK: add_ints +;CHECK: br +;CHECK: getelementptr +;CHECK-NEXT: getelementptr +;CHECK-NEXT: icmp uge +;CHECK-NEXT: icmp uge +;CHECK-NEXT: icmp uge +;CHECK-NEXT: icmp uge +;CHECK-NEXT: and +;CHECK: ret +define void @add_ints(i32* nocapture %A, i32* nocapture %B, i32* nocapture %C) { +entry: + br label %for.body + +for.body: + %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] + %arrayidx = getelementptr inbounds i32* %B, i64 %indvars.iv + %0 = load i32* %arrayidx, align 4 + %arrayidx2 = getelementptr inbounds i32* %C, i64 %indvars.iv + %1 = load i32* %arrayidx2, align 4 + %add = add nsw i32 %1, %0 + %arrayidx4 = getelementptr inbounds i32* %A, i64 %indvars.iv + store i32 %add, i32* %arrayidx4, align 4 + %indvars.iv.next = add i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32 + %exitcond = icmp eq i32 %lftr.wideiv, 200 + br i1 %exitcond, label %for.end, label %for.body + +for.end: + ret void +} -- cgit v1.2.3