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llvm-6502/test/CodeGen/X86/combine-vec-shuffle.ll
Andrea Di Biagio 6077ca9abb [DAGCombiner] teach how to simplify xor/and/or nodes according to the following rules: 
1)  (AND (shuf (A, C, Mask), shuf (B, C, Mask)) -> shuf (AND (A, B), C, Mask)
 2)  (OR  (shuf (A, C, Mask), shuf (B, C, Mask)) -> shuf (OR  (A, B), C, Mask)
 3)  (XOR (shuf (A, C, Mask), shuf (B, C, Mask)) -> shuf (XOR (A, B), V_0, Mask)

 4)  (AND (shuf (C, A, Mask), shuf (C, B, Mask)) -> shuf (C, AND (A, B), Mask)
 5)  (OR  (shuf (C, A, Mask), shuf (C, B, Mask)) -> shuf (C, OR  (A, B), Mask)
 6)  (XOR (shuf (C, A, Mask), shuf (C, B, Mask)) -> shuf (V_0, XOR (A, B), Mask)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204160 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-18 17:12:59 +00:00

254 lines
7.9 KiB
LLVM
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; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7 | FileCheck %s
; Verify that the DAGCombiner correctly folds according to the following rules:
; fold (AND (shuf (A, C), shuf (B, C)) -> shuf (AND (A, B), C)
; fold (OR (shuf (A, C), shuf (B, C)) -> shuf (OR (A, B), C)
; fold (XOR (shuf (A, C), shuf (B, C)) -> shuf (XOR (A, B), V_0)
; fold (AND (shuf (C, A), shuf (C, B)) -> shuf (C, AND (A, B))
; fold (OR (shuf (C, A), shuf (C, B)) -> shuf (C, OR (A, B))
; fold (XOR (shuf (C, A), shuf (C, B)) -> shuf (V_0, XOR (A, B))
define <4 x i32> @test1(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %a, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 1, i32 3>
%shuf2 = shufflevector <4 x i32> %b, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 1, i32 3>
%and = and <4 x i32> %shuf1, %shuf2
ret <4 x i32> %and
}
; CHECK-LABEL: test1
; CHECK-NOT: pshufd
; CHECK: pand
; CHECK-NEXT: pshufd
; CHECK-NEXT: ret
define <4 x i32> @test2(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %a, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 1, i32 3>
%shuf2 = shufflevector <4 x i32> %b, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 1, i32 3>
%or = or <4 x i32> %shuf1, %shuf2
ret <4 x i32> %or
}
; CHECK-LABEL: test2
; CHECK-NOT: pshufd
; CHECK: por
; CHECK-NEXT: pshufd
; CHECK-NEXT: ret
define <4 x i32> @test3(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %a, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 1, i32 3>
%shuf2 = shufflevector <4 x i32> %b, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 1, i32 3>
%xor = xor <4 x i32> %shuf1, %shuf2
ret <4 x i32> %xor
}
; CHECK-LABEL: test3
; CHECK-NOT: pshufd
; CHECK: pxor
; CHECK-NEXT: pshufd
; CHECK-NEXT: ret
define <4 x i32> @test4(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %c, <4 x i32> %a, <4 x i32><i32 4, i32 6, i32 5, i32 7>
%shuf2 = shufflevector <4 x i32> %c, <4 x i32> %b, <4 x i32><i32 4, i32 6, i32 5, i32 7>
%and = and <4 x i32> %shuf1, %shuf2
ret <4 x i32> %and
}
; CHECK-LABEL: test4
; CHECK-NOT: pshufd
; CHECK: pand
; CHECK-NEXT: pshufd
; CHECK-NEXT: ret
define <4 x i32> @test5(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %c, <4 x i32> %a, <4 x i32><i32 4, i32 6, i32 5, i32 7>
%shuf2 = shufflevector <4 x i32> %c, <4 x i32> %b, <4 x i32><i32 4, i32 6, i32 5, i32 7>
%or = or <4 x i32> %shuf1, %shuf2
ret <4 x i32> %or
}
; CHECK-LABEL: test5
; CHECK-NOT: pshufd
; CHECK: por
; CHECK-NEXT: pshufd
; CHECK-NEXT: ret
define <4 x i32> @test6(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %c, <4 x i32> %a, <4 x i32><i32 4, i32 6, i32 5, i32 7>
%shuf2 = shufflevector <4 x i32> %c, <4 x i32> %b, <4 x i32><i32 4, i32 6, i32 5, i32 7>
%xor = xor <4 x i32> %shuf1, %shuf2
ret <4 x i32> %xor
}
; CHECK-LABEL: test6
; CHECK-NOT: pshufd
; CHECK: pxor
; CHECK-NEXT: pshufd
; CHECK-NEXT: ret
; Verify that DAGCombiner moves the shuffle after the xor/and/or even if shuffles
; are not performing a swizzle operations.
define <4 x i32> @test1b(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %a, <4 x i32> %c, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%shuf2 = shufflevector <4 x i32> %b, <4 x i32> %c, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%and = and <4 x i32> %shuf1, %shuf2
ret <4 x i32> %and
}
; CHECK-LABEL: test1b
; CHECK-NOT: blendps
; CHECK: andps
; CHECK-NEXT: blendps
; CHECK-NEXT: ret
define <4 x i32> @test2b(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %a, <4 x i32> %c, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%shuf2 = shufflevector <4 x i32> %b, <4 x i32> %c, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%or = or <4 x i32> %shuf1, %shuf2
ret <4 x i32> %or
}
; CHECK-LABEL: test2b
; CHECK-NOT: blendps
; CHECK: orps
; CHECK-NEXT: blendps
; CHECK-NEXT: ret
define <4 x i32> @test3b(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %a, <4 x i32> %c, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%shuf2 = shufflevector <4 x i32> %b, <4 x i32> %c, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%xor = xor <4 x i32> %shuf1, %shuf2
ret <4 x i32> %xor
}
; CHECK-LABEL: test3b
; CHECK-NOT: blendps
; CHECK: xorps
; CHECK-NEXT: xorps
; CHECK-NEXT: blendps
; CHECK-NEXT: ret
define <4 x i32> @test4b(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %c, <4 x i32> %a, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%shuf2 = shufflevector <4 x i32> %c, <4 x i32> %b, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%and = and <4 x i32> %shuf1, %shuf2
ret <4 x i32> %and
}
; CHECK-LABEL: test4b
; CHECK-NOT: blendps
; CHECK: andps
; CHECK-NEXT: blendps
; CHECK: ret
define <4 x i32> @test5b(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %c, <4 x i32> %a, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%shuf2 = shufflevector <4 x i32> %c, <4 x i32> %b, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%or = or <4 x i32> %shuf1, %shuf2
ret <4 x i32> %or
}
; CHECK-LABEL: test5b
; CHECK-NOT: blendps
; CHECK: orps
; CHECK-NEXT: blendps
; CHECK: ret
define <4 x i32> @test6b(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %c, <4 x i32> %a, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%shuf2 = shufflevector <4 x i32> %c, <4 x i32> %b, <4 x i32><i32 0, i32 5, i32 2, i32 7>
%xor = xor <4 x i32> %shuf1, %shuf2
ret <4 x i32> %xor
}
; CHECK-LABEL: test6b
; CHECK-NOT: blendps
; CHECK: xorps
; CHECK-NEXT: xorps
; CHECK-NEXT: blendps
; CHECK: ret
define <4 x i32> @test1c(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %a, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%shuf2 = shufflevector <4 x i32> %b, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%and = and <4 x i32> %shuf1, %shuf2
ret <4 x i32> %and
}
; CHECK-LABEL: test1c
; CHECK-NOT: shufps
; CHECK: andps
; CHECK-NEXT: shufps
; CHECK-NEXT: ret
define <4 x i32> @test2c(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %a, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%shuf2 = shufflevector <4 x i32> %b, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%or = or <4 x i32> %shuf1, %shuf2
ret <4 x i32> %or
}
; CHECK-LABEL: test2c
; CHECK-NOT: shufps
; CHECK: orps
; CHECK-NEXT: shufps
; CHECK-NEXT: ret
define <4 x i32> @test3c(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %a, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%shuf2 = shufflevector <4 x i32> %b, <4 x i32> %c, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%xor = xor <4 x i32> %shuf1, %shuf2
ret <4 x i32> %xor
}
; CHECK-LABEL: test3c
; CHECK-NOT: shufps
; CHECK: xorps
; CHECK-NEXT: xorps
; CHECK-NEXT: shufps
; CHECK-NEXT: ret
define <4 x i32> @test4c(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %c, <4 x i32> %a, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%shuf2 = shufflevector <4 x i32> %c, <4 x i32> %b, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%and = and <4 x i32> %shuf1, %shuf2
ret <4 x i32> %and
}
; CHECK-LABEL: test4c
; CHECK-NOT: shufps
; CHECK: andps
; CHECK-NEXT: shufps
; CHECK: ret
define <4 x i32> @test5c(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %c, <4 x i32> %a, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%shuf2 = shufflevector <4 x i32> %c, <4 x i32> %b, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%or = or <4 x i32> %shuf1, %shuf2
ret <4 x i32> %or
}
; CHECK-LABEL: test5c
; CHECK-NOT: shufps
; CHECK: orps
; CHECK-NEXT: shufps
; CHECK: ret
define <4 x i32> @test6c(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c) {
%shuf1 = shufflevector <4 x i32> %c, <4 x i32> %a, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%shuf2 = shufflevector <4 x i32> %c, <4 x i32> %b, <4 x i32><i32 0, i32 2, i32 5, i32 7>
%xor = xor <4 x i32> %shuf1, %shuf2
ret <4 x i32> %xor
}
; CHECK-LABEL: test6c
; CHECK-NOT: shufps
; CHECK: xorps
; CHECK-NEXT: xorps
; CHECK-NEXT: shufps
; CHECK: ret
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