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comparison test/CodeGen/X86/pshufd-combine-crash.ll @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
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children 803732b1fca8
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34:e874dbf0ad9d 77:54457678186b
1 ; RUN: llc < %s -march=x86-64 -mcpu=corei7 -debug
2
3 ; REQUIRES: asserts
4
5 ; Test that the dag combiner doesn't assert if we try to replace a sequence of two
6 ; v4f32 X86ISD::PSHUFD nodes with a single PSHUFD.
7
8
9 define <4 x float> @test(<4 x float> %V) {
10 %1 = shufflevector <4 x float> %V, <4 x float> undef, <4 x i32> <i32 3, i32 0, i32 2, i32 1>
11 %2 = shufflevector <4 x float> %1, <4 x float> undef, <4 x i32> <i32 3, i32 0, i32 2, i32 1>
12 ret <4 x float> %2
13 }
14