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Add testcases for PR8411 (vget_low and vget_high implemented as shuffles). 

llvm-svn: 122997
This commit is contained in:
Bob Wilson 2011-01-07 06:44:14 +00:00
parent 58be07b28c
commit 99da75c17d
1 changed files with 37 additions and 1 deletions
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38
llvm/test/CodeGen/ARM/vcombine.ll
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@ -1,6 +1,9 @@
; RUN: llc < %s -march=arm -mattr=+neon
; RUN: llc < %s -march=arm -mattr=+neon | FileCheck %s
define <16 x i8> @vcombine8(<8 x i8>* %A, <8 x i8>* %B) nounwind {
; CHECK: vcombine8
; CHECK: vmov r0, r1, d16
; CHECK: vmov r2, r3, d17
%tmp1 = load <8 x i8>* %A
%tmp2 = load <8 x i8>* %B
%tmp3 = shufflevector <8 x i8> %tmp1, <8 x i8> %tmp2, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
@ -8,6 +11,9 @@ define <16 x i8> @vcombine8(<8 x i8>* %A, <8 x i8>* %B) nounwind {
}
define <8 x i16> @vcombine16(<4 x i16>* %A, <4 x i16>* %B) nounwind {
; CHECK: vcombine16
; CHECK: vmov r0, r1, d16
; CHECK: vmov r2, r3, d17
%tmp1 = load <4 x i16>* %A
%tmp2 = load <4 x i16>* %B
%tmp3 = shufflevector <4 x i16> %tmp1, <4 x i16> %tmp2, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
@ -15,6 +21,9 @@ define <8 x i16> @vcombine16(<4 x i16>* %A, <4 x i16>* %B) nounwind {
}
define <4 x i32> @vcombine32(<2 x i32>* %A, <2 x i32>* %B) nounwind {
; CHECK: vcombine32
; CHECK: vmov r0, r1, d16
; CHECK: vmov r2, r3, d17
%tmp1 = load <2 x i32>* %A
%tmp2 = load <2 x i32>* %B
%tmp3 = shufflevector <2 x i32> %tmp1, <2 x i32> %tmp2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
@ -22,6 +31,9 @@ define <4 x i32> @vcombine32(<2 x i32>* %A, <2 x i32>* %B) nounwind {
}
define <4 x float> @vcombinefloat(<2 x float>* %A, <2 x float>* %B) nounwind {
; CHECK: vcombinefloat
; CHECK: vmov r0, r1, d16
; CHECK: vmov r2, r3, d17
%tmp1 = load <2 x float>* %A
%tmp2 = load <2 x float>* %B
%tmp3 = shufflevector <2 x float> %tmp1, <2 x float> %tmp2, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
@ -29,8 +41,32 @@ define <4 x float> @vcombinefloat(<2 x float>* %A, <2 x float>* %B) nounwind {
}
define <2 x i64> @vcombine64(<1 x i64>* %A, <1 x i64>* %B) nounwind {
; CHECK: vcombine64
; CHECK: vmov r0, r1, d16
; CHECK: vmov r2, r3, d17
%tmp1 = load <1 x i64>* %A
%tmp2 = load <1 x i64>* %B
%tmp3 = shufflevector <1 x i64> %tmp1, <1 x i64> %tmp2, <2 x i32> <i32 0, i32 1>
ret <2 x i64> %tmp3
}
; Check for vget_low and vget_high implemented with shufflevector. PR8411.
; They should not require storing to the stack.
define <4 x i16> @vget_low16(<8 x i16>* %A) nounwind {
; CHECK: vget_low16
; CHECK-NOT: vst
; CHECK: vmov r0, r1, d16
%tmp1 = load <8 x i16>* %A
%tmp2 = shufflevector <8 x i16> %tmp1, <8 x i16> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
ret <4 x i16> %tmp2
}
define <8 x i8> @vget_high8(<16 x i8>* %A) nounwind {
; CHECK: vget_high8
; CHECK-NOT: vst
; CHECK: vmov r0, r1, d17
%tmp1 = load <16 x i8>* %A
%tmp2 = shufflevector <16 x i8> %tmp1, <16 x i8> undef, <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
ret <8 x i8> %tmp2
}