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llvm-mirror/test/CodeGen/X86/2012-01-11-split-cv.ll
Nadav Rotem 18cdee3bee On AVX, we can load v8i32 at a time. The bug happens when two uneven loads are used.
When we load the v12i32 type, the GenWidenVectorLoads method generates two loads: v8i32 and v4i32 
and attempts to use CONCAT_VECTORS to join them. In this fix I concat undef values to widen 
the smaller value. The test "widen_load-2.ll" also exposes this bug on AVX.

llvm-svn: 147964
2012-01-11 20:19:17 +00:00

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LLVM

; RUN: llc < %s -march=x86 -mcpu=corei7-avx -mattr=+avx -mtriple=i686-pc-win32 | FileCheck %s
;CHECK: add18i16
define void @add18i16(<18 x i16>* nocapture sret %ret, <18 x i16>* %bp) nounwind {
;CHECK: vmovups
%b = load <18 x i16>* %bp, align 16
%x = add <18 x i16> zeroinitializer, %b
store <18 x i16> %x, <18 x i16>* %ret, align 16
;CHECK: ret
ret void
}