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| author | Nadav Rotem <nrotem@apple.com> | 2013-01-13 07:56:29 +0000 |
|---|---|---|
| committer | Nadav Rotem <nrotem@apple.com> | 2013-01-13 07:56:29 +0000 |
| commit | b6db95f42b7c3b58f980e387d20ddb3e16bffd56 (patch) | |
| tree | dccd21fe81edd340801da46b76a4628b32d9de32 /test/Transforms/LoopVectorize | |
| parent | 981308cffbfd1f77750452015f6e6f0f053e11d4 (diff) | |
Fix PR14547. Handle induction variables of small sizes smaller than i32 (i8 and i16).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172348 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/LoopVectorize')
| -rw-r--r-- | test/Transforms/LoopVectorize/i8-induction.ll | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/test/Transforms/LoopVectorize/i8-induction.ll b/test/Transforms/LoopVectorize/i8-induction.ll new file mode 100644 index 0000000000..7759b7085a --- /dev/null +++ b/test/Transforms/LoopVectorize/i8-induction.ll @@ -0,0 +1,35 @@ +; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -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" + +@a = common global i8 0, align 1 +@b = common global i8 0, align 1 + +define void @f() nounwind uwtable ssp { +scalar.ph: + store i8 0, i8* inttoptr (i64 1 to i8*), align 1, !tbaa !0 + %0 = load i8* @a, align 1, !tbaa !0 + br label %for.body + +for.body: + %mul16 = phi i8 [ 0, %scalar.ph ], [ %mul, %for.body ] ; <------- i8 induction var. + %c.015 = phi i8 [ undef, %scalar.ph ], [ %conv8, %for.body ] + %conv2 = sext i8 %c.015 to i32 + %tobool = icmp ne i8 %c.015, 0 + %.sink = select i1 %tobool, i8 %c.015, i8 %0 + %mul = mul i8 %mul16, %.sink + %add = add nsw i32 %conv2, 1 + %conv8 = trunc i32 %add to i8 + %sext = shl i32 %add, 24 + %phitmp14 = icmp slt i32 %sext, 268435456 + br i1 %phitmp14, label %for.body, label %for.end + +for.end: ; preds = %for.body + store i8 %mul, i8* @b, align 1, !tbaa !0 + ret void +} + +!0 = metadata !{metadata !"omnipotent char", metadata !1} +!1 = metadata !{metadata !"Simple C/C++ TBAA"} + |