22 lines
1.1 KiB
LLVM
22 lines
1.1 KiB
LLVM
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||
|
|
; RUN: opt < %s -vector-combine -S -mtriple=aarch64-- | FileCheck %s --check-prefixes=CHECK
|
||
|
|
|
||
|
|
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
|
||
|
|
target triple = "aarch64-unknown-linux-gnu"
|
||
|
|
|
||
|
|
; This test checks we are not crashing with TTI when trying to get shuffle cost.
|
||
|
|
; This test also check that shuffle mask <vscale x 4 x i32> zeroinitializer is
|
||
|
|
; not narrowed into <0, 1, 0, 1, ...>, which we cannot reason if it's a valid
|
||
|
|
; splat or not.
|
||
|
|
|
||
|
|
define <vscale x 8 x i16> @bitcast_shuffle(<vscale x 4 x i32> %a) {
|
||
|
|
; CHECK-LABEL: @bitcast_shuffle(
|
||
|
|
; CHECK-NEXT: [[I:%.*]] = shufflevector <vscale x 4 x i32> [[A:%.*]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
|
||
|
|
; CHECK-NEXT: [[R:%.*]] = bitcast <vscale x 4 x i32> [[I]] to <vscale x 8 x i16>
|
||
|
|
; CHECK-NEXT: ret <vscale x 8 x i16> [[R]]
|
||
|
|
;
|
||
|
|
%i = shufflevector <vscale x 4 x i32> %a, <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
|
||
|
|
%r = bitcast <vscale x 4 x i32> %i to <vscale x 8 x i16>
|
||
|
|
ret <vscale x 8 x i16> %r
|
||
|
|
}
|