llvm/test/CodeGen/X86/vec_zero_cse.ll
Sanjay Patel e3e5fcab94 [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



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235014 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-15 15:47:51 +00:00

43 lines
976 B
LLVM

; RUN: llc < %s -relocation-model=static -mtriple=i686-unknown -mattr=+mmx,+sse3 | FileCheck %s
; 64-bit stores here do not use MMX.
@M1 = external global <1 x i64>
@M2 = external global <2 x i32>
@S1 = external global <2 x i64>
@S2 = external global <4 x i32>
define void @test1() {
;CHECK-LABEL: @test1
;CHECK: xorps
store <1 x i64> zeroinitializer, <1 x i64>* @M1
store <2 x i32> zeroinitializer, <2 x i32>* @M2
ret void
}
define void @test2() {
;CHECK-LABEL: @test2
;CHECK: pcmpeqd
store <1 x i64> < i64 -1 >, <1 x i64>* @M1
store <2 x i32> < i32 -1, i32 -1 >, <2 x i32>* @M2
ret void
}
define void @test3() {
;CHECK-LABEL: @test3
;CHECK: xorps
store <2 x i64> zeroinitializer, <2 x i64>* @S1
store <4 x i32> zeroinitializer, <4 x i32>* @S2
ret void
}
define void @test4() {
;CHECK-LABEL: @test4
;CHECK: pcmpeqd
store <2 x i64> < i64 -1, i64 -1>, <2 x i64>* @S1
store <4 x i32> < i32 -1, i32 -1, i32 -1, i32 -1 >, <4 x i32>* @S2
ret void
}