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llvm-mirror/test/CodeGen/X86/2012-07-10-extload64.ll
Sanjay Patel e7d64b577c [X86] add an exedepfix entry for movq == movlps == movlpd
This is a 1-line patch (with a TODO for AVX because that will affect
even more regression tests) that lets us substitute the appropriate
64-bit store for the float/double/int domains.

It's not clear to me exactly what the difference is between the 0xD6 (MOVPQI2QImr) and 
0x7E (MOVSDto64mr) opcodes, but this is apparently the right choice.

Differential Revision: http://reviews.llvm.org/D8691

llvm-svn: 235014
2015-04-15 15:47:51 +00:00

33 lines
724 B
LLVM

; RUN: llc < %s -march=x86 -mcpu=corei7 -mtriple=i686-pc-win32 | FileCheck %s
; CHECK: load_store
define void @load_store(<4 x i16>* %in) {
entry:
; CHECK: pmovzxwd
%A27 = load <4 x i16>, <4 x i16>* %in, align 4
%A28 = add <4 x i16> %A27, %A27
; CHECK: movq
store <4 x i16> %A28, <4 x i16>* %in, align 4
ret void
; CHECK: ret
}
; Make sure that we store a 64bit value, even on 32bit systems.
;CHECK-LABEL: store_64:
define void @store_64(<2 x i32>* %ptr) {
BB:
store <2 x i32> zeroinitializer, <2 x i32>* %ptr
ret void
;CHECK: movlps
;CHECK: ret
}
;CHECK-LABEL: load_64:
define <2 x i32> @load_64(<2 x i32>* %ptr) {
BB:
%t = load <2 x i32>, <2 x i32>* %ptr
ret <2 x i32> %t
;CHECK: pmovzxdq
;CHECK: ret
}