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Diffstat (limited to 'test/Transforms/InstCombine/pr2645-1.ll')
| -rw-r--r-- | test/Transforms/InstCombine/pr2645-1.ll | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/pr2645-1.ll b/test/Transforms/InstCombine/pr2645-1.ll new file mode 100644 index 0000000..d320daf --- /dev/null +++ b/test/Transforms/InstCombine/pr2645-1.ll @@ -0,0 +1,39 @@ +; RUN: opt < %s -instcombine -S | grep shufflevector +; PR2645 + +; instcombine shouldn't delete the shufflevector. + +define internal void @""(i8*, i32, i8*) { +; <label>:3 + br label %4 + +; <label>:4 ; preds = %6, %3 + %.0 = phi i32 [ 0, %3 ], [ %19, %6 ] ; <i32> [#uses=4] + %5 = icmp slt i32 %.0, %1 ; <i1> [#uses=1] + br i1 %5, label %6, label %20 + +; <label>:6 ; preds = %4 + %7 = getelementptr i8* %2, i32 %.0 ; <i8*> [#uses=1] + %8 = bitcast i8* %7 to <4 x i16>* ; <<4 x i16>*> [#uses=1] + %9 = load <4 x i16>* %8, align 1 ; <<4 x i16>> [#uses=1] + %10 = bitcast <4 x i16> %9 to <1 x i64> ; <<1 x i64>> [#uses=1] + %11 = call <2 x i64> @foo(<1 x i64> %10) +; <<2 x i64>> [#uses=1] + %12 = bitcast <2 x i64> %11 to <4 x i32> ; <<4 x i32>> [#uses=1] + %13 = bitcast <4 x i32> %12 to <8 x i16> ; <<8 x i16>> [#uses=2] + %14 = shufflevector <8 x i16> %13, <8 x i16> %13, <8 x i32> < i32 0, i32 0, i32 1, i32 1, i32 2, i32 2, i32 3, i32 3 > ; <<8 x i16>> [#uses=1] + %15 = bitcast <8 x i16> %14 to <4 x i32> ; <<4 x i32>> [#uses=1] + %16 = sitofp <4 x i32> %15 to <4 x float> ; <<4 x float>> [#uses=1] + %17 = getelementptr i8* %0, i32 %.0 ; <i8*> [#uses=1] + %18 = bitcast i8* %17 to <4 x float>* ; <<4 x float>*> [#uses=1] + store <4 x float> %16, <4 x float>* %18, align 1 + %19 = add i32 %.0, 1 ; <i32> [#uses=1] + br label %4 + +; <label>:20 ; preds = %4 + call void @llvm.x86.mmx.emms( ) + ret void +} + +declare <2 x i64> @foo(<1 x i64>) +declare void @llvm.x86.mmx.emms( ) |