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llvm-mirror/test/CodeGen/SystemZ/vec-move-19.ll
Jonas Paulsson ec1b2ec29d [SystemZ] Avoid inserting same value after replication
A minor improvement of buildVector() that skips creating an
INSERT_VECTOR_ELT for a Value which has already been used for the
REPLICATE.

Review: Ulrich Weigand
https://reviews.llvm.org/D54315

llvm-svn: 346504
2018-11-09 15:44:28 +00:00

21 lines
657 B
LLVM

; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
; Test that a loaded value which is replicated is not inserted also in any
; elements.
; CHECK: vlvgp %v0, %r0, %r0
; CHECK-NEXT: vrepf %v24, %v0, 1
; CHECK-NOT: vlvgf %v24, %r0, 1
; CHECK-NOT: vlvgf %v24, %r0, 2
define <4 x i32> @fun(i32 %arg, i32* %dst) {
%tmp = load i32, i32* undef
%tmp8 = insertelement <4 x i32> undef, i32 %tmp, i32 0
%tmp9 = insertelement <4 x i32> %tmp8, i32 %tmp, i32 1
%tmp10 = insertelement <4 x i32> %tmp9, i32 %tmp, i32 2
%tmp11 = insertelement <4 x i32> %tmp10, i32 %arg, i32 3
store i32 %tmp, i32* %dst
ret <4 x i32> %tmp11
}