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ARM/NEON: Pattern match vector integer abs to vabs.

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llvm-svn: 180604
This commit is contained in:
Benjamin Kramer 2013-04-26 15:00:57 +00:00
parent 11723aa321
commit 40a2d53c85
2 changed files with 114 additions and 0 deletions
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23
lib/Target/ARM/ARMInstrNEON.td
View File

@ -4907,6 +4907,29 @@ def VABSfq : N2VQ<0b11, 0b11, 0b10, 0b01, 0b01110, 0,
"vabs", "f32",
v4f32, v4f32, fabs>;
def : Pat<(xor (v2i32 (bitconvert (v8i8 (NEONvshrs DPR:$src, (i32 7))))),
(v2i32 (bitconvert (v8i8 (add DPR:$src,
(NEONvshrs DPR:$src, (i32 7))))))),
(VABSv8i8 DPR:$src)>;
def : Pat<(xor (v2i32 (bitconvert (v4i16 (NEONvshrs DPR:$src, (i32 15))))),
(v2i32 (bitconvert (v4i16 (add DPR:$src,
(NEONvshrs DPR:$src, (i32 15))))))),
(VABSv4i16 DPR:$src)>;
def : Pat<(xor (v2i32 (NEONvshrs DPR:$src, (i32 31))),
(v2i32 (add DPR:$src, (NEONvshrs DPR:$src, (i32 31))))),
(VABSv2i32 DPR:$src)>;
def : Pat<(xor (v4i32 (bitconvert (v16i8 (NEONvshrs QPR:$src, (i32 7))))),
(v4i32 (bitconvert (v16i8 (add QPR:$src,
(NEONvshrs QPR:$src, (i32 7))))))),
(VABSv16i8 QPR:$src)>;
def : Pat<(xor (v4i32 (bitconvert (v8i16 (NEONvshrs QPR:$src, (i32 15))))),
(v4i32 (bitconvert (v8i16 (add QPR:$src,
(NEONvshrs QPR:$src, (i32 15))))))),
(VABSv8i16 QPR:$src)>;
def : Pat<(xor (v4i32 (NEONvshrs QPR:$src, (i32 31))),
(v4i32 (add QPR:$src, (NEONvshrs QPR:$src, (i32 31))))),
(VABSv4i32 QPR:$src)>;
def : Pat<(v2f32 (int_arm_neon_vabs (v2f32 DPR:$src))), (VABSfd DPR:$src)>;
def : Pat<(v4f32 (int_arm_neon_vabs (v4f32 QPR:$src))), (VABSfq QPR:$src)>;

91
test/CodeGen/ARM/neon_vabs.ll Normal file
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@ -0,0 +1,91 @@
; RUN: llc < %s -march=arm -mattr=+neon | FileCheck %s
define <4 x i32> @test1(<4 x i32> %a) nounwind {
; CHECK: test1:
; CHECK: vabs.s32 q
%tmp1neg = sub <4 x i32> zeroinitializer, %a
%b = icmp sgt <4 x i32> %a, <i32 -1, i32 -1, i32 -1, i32 -1>
%abs = select <4 x i1> %b, <4 x i32> %a, <4 x i32> %tmp1neg
ret <4 x i32> %abs
}
define <4 x i32> @test2(<4 x i32> %a) nounwind {
; CHECK: test2:
; CHECK: vabs.s32 q
%tmp1neg = sub <4 x i32> zeroinitializer, %a
%b = icmp sge <4 x i32> %a, zeroinitializer
%abs = select <4 x i1> %b, <4 x i32> %a, <4 x i32> %tmp1neg
ret <4 x i32> %abs
}
define <8 x i16> @test3(<8 x i16> %a) nounwind {
; CHECK: test3:
; CHECK: vabs.s16 q
%tmp1neg = sub <8 x i16> zeroinitializer, %a
%b = icmp sgt <8 x i16> %a, zeroinitializer
%abs = select <8 x i1> %b, <8 x i16> %a, <8 x i16> %tmp1neg
ret <8 x i16> %abs
}
define <16 x i8> @test4(<16 x i8> %a) nounwind {
; CHECK: test4:
; CHECK: vabs.s8 q
%tmp1neg = sub <16 x i8> zeroinitializer, %a
%b = icmp slt <16 x i8> %a, zeroinitializer
%abs = select <16 x i1> %b, <16 x i8> %tmp1neg, <16 x i8> %a
ret <16 x i8> %abs
}
define <4 x i32> @test5(<4 x i32> %a) nounwind {
; CHECK: test5:
; CHECK: vabs.s32 q
%tmp1neg = sub <4 x i32> zeroinitializer, %a
%b = icmp sle <4 x i32> %a, zeroinitializer
%abs = select <4 x i1> %b, <4 x i32> %tmp1neg, <4 x i32> %a
ret <4 x i32> %abs
}
define <2 x i32> @test6(<2 x i32> %a) nounwind {
; CHECK: test6:
; CHECK: vabs.s32 d
%tmp1neg = sub <2 x i32> zeroinitializer, %a
%b = icmp sgt <2 x i32> %a, <i32 -1, i32 -1>
%abs = select <2 x i1> %b, <2 x i32> %a, <2 x i32> %tmp1neg
ret <2 x i32> %abs
}
define <2 x i32> @test7(<2 x i32> %a) nounwind {
; CHECK: test7:
; CHECK: vabs.s32 d
%tmp1neg = sub <2 x i32> zeroinitializer, %a
%b = icmp sge <2 x i32> %a, zeroinitializer
%abs = select <2 x i1> %b, <2 x i32> %a, <2 x i32> %tmp1neg
ret <2 x i32> %abs
}
define <4 x i16> @test8(<4 x i16> %a) nounwind {
; CHECK: test8:
; CHECK: vabs.s16 d
%tmp1neg = sub <4 x i16> zeroinitializer, %a
%b = icmp sgt <4 x i16> %a, zeroinitializer
%abs = select <4 x i1> %b, <4 x i16> %a, <4 x i16> %tmp1neg
ret <4 x i16> %abs
}
define <8 x i8> @test9(<8 x i8> %a) nounwind {
; CHECK: test9:
; CHECK: vabs.s8 d
%tmp1neg = sub <8 x i8> zeroinitializer, %a
%b = icmp slt <8 x i8> %a, zeroinitializer
%abs = select <8 x i1> %b, <8 x i8> %tmp1neg, <8 x i8> %a
ret <8 x i8> %abs
}
define <2 x i32> @test10(<2 x i32> %a) nounwind {
; CHECK: test10:
; CHECK: vabs.s32 d
%tmp1neg = sub <2 x i32> zeroinitializer, %a
%b = icmp sle <2 x i32> %a, zeroinitializer
%abs = select <2 x i1> %b, <2 x i32> %tmp1neg, <2 x i32> %a
ret <2 x i32> %abs
}