From 7e413e9c94294f17daa64ac9fda09a738e20caa5 Mon Sep 17 00:00:00 2001 From: Nadav Rotem Date: Fri, 3 Feb 2012 13:18:25 +0000 Subject: The type-legalizer often scalarizes code. One of the common patterns is extract-and-truncate. In this patch we optimize this pattern and convert the sequence into extract op of a narrow type. This allows the BUILD_VECTOR dag optimizations to construct efficient shuffle operations in many cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149692 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/X86/2011-12-8-bitcastintprom.ll | 2 +- test/CodeGen/X86/avx-shuffle.ll | 8 ++++++++ 2 files changed, 9 insertions(+), 1 deletion(-) (limited to 'test') diff --git a/test/CodeGen/X86/2011-12-8-bitcastintprom.ll b/test/CodeGen/X86/2011-12-8-bitcastintprom.ll index ceee8e6..e2b3ebc 100644 --- a/test/CodeGen/X86/2011-12-8-bitcastintprom.ll +++ b/test/CodeGen/X86/2011-12-8-bitcastintprom.ll @@ -2,8 +2,8 @@ ; Make sure that the conversion between v4i8 to v2i16 is not a simple bitcast. ; CHECK: prom_bug -; CHECK: movd ; CHECK: shufb +; CHECK: movd ; CHECK: movw ; CHECK: ret define void @prom_bug(<4 x i8> %t, i16* %p) { diff --git a/test/CodeGen/X86/avx-shuffle.ll b/test/CodeGen/X86/avx-shuffle.ll index 08b668c..5a5c353 100644 --- a/test/CodeGen/X86/avx-shuffle.ll +++ b/test/CodeGen/X86/avx-shuffle.ll @@ -109,3 +109,11 @@ define <4 x float> @test12(<4 x float>* %a) nounwind { %tmp1 = shufflevector <4 x float> %tmp0, <4 x float> undef, <4 x i32> ret <4 x float> %tmp1 } + +;CHECK: test13 +;CHECK: shufd +;CHECK: ret +define <4 x i32> @test13(<2 x i32>%x) nounwind readnone { + %x1 = shufflevector <2 x i32> %x, <2 x i32> undef, <4 x i32> + ret <4 x i32>%x1 +} -- cgit v1.1