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| author | Nadav Rotem <nrotem@apple.com> | 2012-12-26 23:30:53 +0000 |
|---|---|---|
| committer | Nadav Rotem <nrotem@apple.com> | 2012-12-26 23:30:53 +0000 |
| commit | 5dd839430c1dbce6cd35dc44f68718a1fc69bfba (patch) | |
| tree | 052a260851158031533a6cc3d365c75f2b3ec569 /test/Transforms | |
| parent | e9fd6ad5679e08c59613fc2765e8b628e5c1eb95 (diff) | |
| download | llvm-5dd839430c1dbce6cd35dc44f68718a1fc69bfba.tar.gz llvm-5dd839430c1dbce6cd35dc44f68718a1fc69bfba.tar.bz2 llvm-5dd839430c1dbce6cd35dc44f68718a1fc69bfba.tar.xz | |
If all of the write objects are identified then we can vectorize the loop even if the read objects are unidentified.
PR14719.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171124 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/LoopVectorize/calloc.ll | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/calloc.ll b/test/Transforms/LoopVectorize/calloc.ll new file mode 100644 index 0000000000..378c546988 --- /dev/null +++ b/test/Transforms/LoopVectorize/calloc.ll @@ -0,0 +1,53 @@ +; RUN: opt < %s -loop-vectorize -force-vector-width=4 -dce -instcombine -licm -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-macosx10.9.0" + +;CHECK: hexit +;CHECK: zext <4 x i8> +;CHECK: ret + +define noalias i8* @hexit(i8* nocapture %bytes, i64 %length) nounwind uwtable ssp { +entry: + %shl = shl i64 %length, 1 + %add28 = or i64 %shl, 1 + %call = tail call i8* @calloc(i64 1, i64 %add28) nounwind + %cmp29 = icmp eq i64 %shl, 0 + br i1 %cmp29, label %for.end, label %for.body.lr.ph + +for.body.lr.ph: ; preds = %entry + %0 = shl i64 %length, 1 + br label %for.body + +for.body: ; preds = %for.body, %for.body.lr.ph + %i.030 = phi i64 [ 0, %for.body.lr.ph ], [ %inc, %for.body ] + %shr = lshr i64 %i.030, 1 + %arrayidx = getelementptr inbounds i8* %bytes, i64 %shr + %1 = load i8* %arrayidx, align 1, !tbaa !0 + %conv = zext i8 %1 to i32 + %and = shl i64 %i.030, 2 + %neg = and i64 %and, 4 + %and3 = xor i64 %neg, 4 + %sh_prom = trunc i64 %and3 to i32 + %shl4 = shl i32 15, %sh_prom + %and5 = and i32 %conv, %shl4 + %shr11 = lshr i32 %and5, %sh_prom + %conv13 = and i32 %shr11, 254 + %cmp15 = icmp ugt i32 %conv13, 9 + %cond = select i1 %cmp15, i32 87, i32 48 + %add17 = add nsw i32 %cond, %shr11 + %conv18 = trunc i32 %add17 to i8 + %arrayidx19 = getelementptr inbounds i8* %call, i64 %i.030 + store i8 %conv18, i8* %arrayidx19, align 1, !tbaa !0 + %inc = add i64 %i.030, 1 + %exitcond = icmp eq i64 %inc, %0 + br i1 %exitcond, label %for.end, label %for.body + +for.end: ; preds = %for.body, %entry + ret i8* %call +} + +declare noalias i8* @calloc(i64, i64) nounwind + +!0 = metadata !{metadata !"omnipotent char", metadata !1} +!1 = metadata !{metadata !"Simple C/C++ TBAA"} |