llvm/test/CodeGen/X86/vec_zero_cse.ll
Jakob Stoklund Olesen 3e5d5c53a0 Expand V_SET0 to xorps by default.
The xorps instruction is smaller than pxor, so prefer that encoding.

The ExecutionDepsFix pass will switch the encoding to pxor and xorpd
when appropriate.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143996 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-07 19:15:58 +00:00

36 lines
911 B
LLVM

; RUN: llc < %s -relocation-model=static -march=x86 -mcpu=yonah | grep xorps | count 1
; RUN: llc < %s -relocation-model=static -march=x86 -mcpu=yonah | grep pcmpeqd | count 1
; 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 @test() {
store <1 x i64> zeroinitializer, <1 x i64>* @M1
store <2 x i32> zeroinitializer, <2 x i32>* @M2
ret void
}
define void @test2() {
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() {
store <2 x i64> zeroinitializer, <2 x i64>* @S1
store <4 x i32> zeroinitializer, <4 x i32>* @S2
ret void
}
define void @test4() {
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
}