313 lines
11 KiB
LLVM
313 lines
11 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.1 | FileCheck %s --check-prefixes=CHECK,SSE
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefixes=CHECK,AVX,AVX2-SLOW
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2,+fast-variable-shuffle | FileCheck %s --check-prefixes=CHECK,AVX,AVX2-FAST
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; fold (sra 0, x) -> 0
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define <4 x i32> @combine_vec_ashr_zero(<4 x i32> %x) {
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; SSE-LABEL: combine_vec_ashr_zero:
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; SSE: # %bb.0:
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; SSE-NEXT: xorps %xmm0, %xmm0
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; SSE-NEXT: retq
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;
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; AVX-LABEL: combine_vec_ashr_zero:
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; AVX: # %bb.0:
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; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0
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; AVX-NEXT: retq
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%1 = ashr <4 x i32> zeroinitializer, %x
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ret <4 x i32> %1
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}
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; fold (sra -1, x) -> -1
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define <4 x i32> @combine_vec_ashr_allones(<4 x i32> %x) {
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; SSE-LABEL: combine_vec_ashr_allones:
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; SSE: # %bb.0:
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; SSE-NEXT: pcmpeqd %xmm0, %xmm0
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; SSE-NEXT: retq
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;
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; AVX-LABEL: combine_vec_ashr_allones:
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; AVX: # %bb.0:
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; AVX-NEXT: vpcmpeqd %xmm0, %xmm0, %xmm0
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; AVX-NEXT: retq
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%1 = ashr <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>, %x
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ret <4 x i32> %1
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}
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; fold (sra x, c >= size(x)) -> undef
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define <4 x i32> @combine_vec_ashr_outofrange0(<4 x i32> %x) {
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; CHECK-LABEL: combine_vec_ashr_outofrange0:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%1 = ashr <4 x i32> %x, <i32 33, i32 33, i32 33, i32 33>
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ret <4 x i32> %1
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}
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define <4 x i32> @combine_vec_ashr_outofrange1(<4 x i32> %x) {
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; CHECK-LABEL: combine_vec_ashr_outofrange1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%1 = ashr <4 x i32> %x, <i32 33, i32 34, i32 35, i32 36>
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ret <4 x i32> %1
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}
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define <4 x i32> @combine_vec_ashr_outofrange2(<4 x i32> %x) {
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; CHECK-LABEL: combine_vec_ashr_outofrange2:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%1 = ashr <4 x i32> %x, <i32 33, i32 34, i32 35, i32 undef>
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ret <4 x i32> %1
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}
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; fold (sra x, 0) -> x
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define <4 x i32> @combine_vec_ashr_by_zero(<4 x i32> %x) {
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; CHECK-LABEL: combine_vec_ashr_by_zero:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%1 = ashr <4 x i32> %x, zeroinitializer
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ret <4 x i32> %1
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}
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; fold (sra (sra x, c1), c2) -> (sra x, (add c1, c2))
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define <4 x i32> @combine_vec_ashr_ashr0(<4 x i32> %x) {
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; SSE-LABEL: combine_vec_ashr_ashr0:
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; SSE: # %bb.0:
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; SSE-NEXT: psrad $6, %xmm0
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; SSE-NEXT: retq
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;
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; AVX-LABEL: combine_vec_ashr_ashr0:
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; AVX: # %bb.0:
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; AVX-NEXT: vpsrad $6, %xmm0, %xmm0
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; AVX-NEXT: retq
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%1 = ashr <4 x i32> %x, <i32 2, i32 2, i32 2, i32 2>
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%2 = ashr <4 x i32> %1, <i32 4, i32 4, i32 4, i32 4>
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ret <4 x i32> %2
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}
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define <4 x i32> @combine_vec_ashr_ashr1(<4 x i32> %x) {
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; SSE-LABEL: combine_vec_ashr_ashr1:
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; SSE: # %bb.0:
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; SSE-NEXT: movdqa %xmm0, %xmm1
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; SSE-NEXT: psrad $10, %xmm1
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; SSE-NEXT: movdqa %xmm0, %xmm2
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; SSE-NEXT: psrad $6, %xmm2
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; SSE-NEXT: pblendw {{.*#+}} xmm2 = xmm2[0,1,2,3],xmm1[4,5,6,7]
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; SSE-NEXT: movdqa %xmm0, %xmm1
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; SSE-NEXT: psrad $8, %xmm1
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; SSE-NEXT: psrad $4, %xmm0
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; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm1[4,5,6,7]
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; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm2[2,3],xmm0[4,5],xmm2[6,7]
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; SSE-NEXT: retq
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;
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; AVX-LABEL: combine_vec_ashr_ashr1:
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; AVX: # %bb.0:
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; AVX-NEXT: vpsravd {{.*}}(%rip), %xmm0, %xmm0
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; AVX-NEXT: retq
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%1 = ashr <4 x i32> %x, <i32 0, i32 1, i32 2, i32 3>
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%2 = ashr <4 x i32> %1, <i32 4, i32 5, i32 6, i32 7>
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ret <4 x i32> %2
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}
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define <4 x i32> @combine_vec_ashr_ashr2(<4 x i32> %x) {
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; SSE-LABEL: combine_vec_ashr_ashr2:
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; SSE: # %bb.0:
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; SSE-NEXT: psrad $31, %xmm0
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; SSE-NEXT: retq
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;
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; AVX-LABEL: combine_vec_ashr_ashr2:
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; AVX: # %bb.0:
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; AVX-NEXT: vpsrad $31, %xmm0, %xmm0
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; AVX-NEXT: retq
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%1 = ashr <4 x i32> %x, <i32 17, i32 18, i32 19, i32 20>
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%2 = ashr <4 x i32> %1, <i32 25, i32 26, i32 27, i32 28>
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ret <4 x i32> %2
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}
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define <4 x i32> @combine_vec_ashr_ashr3(<4 x i32> %x) {
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; SSE-LABEL: combine_vec_ashr_ashr3:
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; SSE: # %bb.0:
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; SSE-NEXT: movdqa %xmm0, %xmm1
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; SSE-NEXT: psrad $27, %xmm1
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; SSE-NEXT: movdqa %xmm0, %xmm2
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; SSE-NEXT: psrad $15, %xmm2
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; SSE-NEXT: pblendw {{.*#+}} xmm2 = xmm2[0,1,2,3],xmm1[4,5,6,7]
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; SSE-NEXT: psrad $31, %xmm0
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; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm2[2,3],xmm0[4,5],xmm2[6,7]
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; SSE-NEXT: retq
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;
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; AVX-LABEL: combine_vec_ashr_ashr3:
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; AVX: # %bb.0:
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; AVX-NEXT: vpsravd {{.*}}(%rip), %xmm0, %xmm0
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; AVX-NEXT: retq
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%1 = ashr <4 x i32> %x, <i32 1, i32 5, i32 50, i32 27>
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%2 = ashr <4 x i32> %1, <i32 33, i32 10, i32 33, i32 0>
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ret <4 x i32> %2
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}
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; fold (sra x, (trunc (and y, c))) -> (sra x, (and (trunc y), (trunc c))).
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define <4 x i32> @combine_vec_ashr_trunc_and(<4 x i32> %x, <4 x i64> %y) {
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; SSE-LABEL: combine_vec_ashr_trunc_and:
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; SSE: # %bb.0:
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; SSE-NEXT: shufps {{.*#+}} xmm1 = xmm1[0,2],xmm2[0,2]
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; SSE-NEXT: andps {{.*}}(%rip), %xmm1
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; SSE-NEXT: pshuflw {{.*#+}} xmm2 = xmm1[2,3,3,3,4,5,6,7]
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; SSE-NEXT: movdqa %xmm0, %xmm3
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; SSE-NEXT: psrad %xmm2, %xmm3
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; SSE-NEXT: pshufd {{.*#+}} xmm2 = xmm1[2,3,2,3]
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; SSE-NEXT: pshuflw {{.*#+}} xmm4 = xmm2[2,3,3,3,4,5,6,7]
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; SSE-NEXT: movdqa %xmm0, %xmm5
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; SSE-NEXT: psrad %xmm4, %xmm5
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; SSE-NEXT: pblendw {{.*#+}} xmm5 = xmm3[0,1,2,3],xmm5[4,5,6,7]
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; SSE-NEXT: pshuflw {{.*#+}} xmm1 = xmm1[0,1,1,1,4,5,6,7]
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; SSE-NEXT: movdqa %xmm0, %xmm3
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; SSE-NEXT: psrad %xmm1, %xmm3
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; SSE-NEXT: pshuflw {{.*#+}} xmm1 = xmm2[0,1,1,1,4,5,6,7]
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; SSE-NEXT: psrad %xmm1, %xmm0
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; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm3[0,1,2,3],xmm0[4,5,6,7]
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; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm5[2,3],xmm0[4,5],xmm5[6,7]
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; SSE-NEXT: retq
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;
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; AVX2-SLOW-LABEL: combine_vec_ashr_trunc_and:
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; AVX2-SLOW: # %bb.0:
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; AVX2-SLOW-NEXT: vextractf128 $1, %ymm1, %xmm2
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; AVX2-SLOW-NEXT: vshufps {{.*#+}} xmm1 = xmm1[0,2],xmm2[0,2]
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; AVX2-SLOW-NEXT: vandps {{.*}}(%rip), %xmm1, %xmm1
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; AVX2-SLOW-NEXT: vpsravd %xmm1, %xmm0, %xmm0
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; AVX2-SLOW-NEXT: vzeroupper
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; AVX2-SLOW-NEXT: retq
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;
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; AVX2-FAST-LABEL: combine_vec_ashr_trunc_and:
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; AVX2-FAST: # %bb.0:
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; AVX2-FAST-NEXT: vmovdqa {{.*#+}} ymm2 = <0,2,4,6,u,u,u,u>
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; AVX2-FAST-NEXT: vpermd %ymm1, %ymm2, %ymm1
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; AVX2-FAST-NEXT: vpand {{.*}}(%rip), %xmm1, %xmm1
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; AVX2-FAST-NEXT: vpsravd %xmm1, %xmm0, %xmm0
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; AVX2-FAST-NEXT: vzeroupper
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; AVX2-FAST-NEXT: retq
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%1 = and <4 x i64> %y, <i64 15, i64 255, i64 4095, i64 65535>
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%2 = trunc <4 x i64> %1 to <4 x i32>
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%3 = ashr <4 x i32> %x, %2
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ret <4 x i32> %3
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}
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; fold (sra (trunc (srl x, c1)), c2) -> (trunc (sra x, c1 + c2))
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; if c1 is equal to the number of bits the trunc removes
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define <4 x i32> @combine_vec_ashr_trunc_lshr(<4 x i64> %x) {
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; SSE-LABEL: combine_vec_ashr_trunc_lshr:
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; SSE: # %bb.0:
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; SSE-NEXT: shufps {{.*#+}} xmm0 = xmm0[1,3],xmm1[1,3]
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; SSE-NEXT: movaps %xmm0, %xmm2
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; SSE-NEXT: psrad $2, %xmm2
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; SSE-NEXT: pblendw {{.*#+}} xmm2 = xmm0[0,1,2,3],xmm2[4,5,6,7]
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; SSE-NEXT: psrad $1, %xmm0
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; SSE-NEXT: psrad $3, %xmm1
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; SSE-NEXT: pblendw {{.*#+}} xmm1 = xmm0[0,1,2,3],xmm1[4,5,6,7]
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; SSE-NEXT: pblendw {{.*#+}} xmm2 = xmm2[0,1],xmm1[2,3],xmm2[4,5],xmm1[6,7]
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; SSE-NEXT: movdqa %xmm2, %xmm0
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; SSE-NEXT: retq
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;
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; AVX2-SLOW-LABEL: combine_vec_ashr_trunc_lshr:
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; AVX2-SLOW: # %bb.0:
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; AVX2-SLOW-NEXT: vpsrlq $32, %ymm0, %ymm0
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; AVX2-SLOW-NEXT: vextracti128 $1, %ymm0, %xmm1
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; AVX2-SLOW-NEXT: vshufps {{.*#+}} xmm0 = xmm0[0,2],xmm1[0,2]
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; AVX2-SLOW-NEXT: vpsravd {{.*}}(%rip), %xmm0, %xmm0
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; AVX2-SLOW-NEXT: vzeroupper
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; AVX2-SLOW-NEXT: retq
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;
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; AVX2-FAST-LABEL: combine_vec_ashr_trunc_lshr:
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; AVX2-FAST: # %bb.0:
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; AVX2-FAST-NEXT: vmovdqa {{.*#+}} xmm1 = [1,3,5,7]
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; AVX2-FAST-NEXT: vpermd %ymm0, %ymm1, %ymm0
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; AVX2-FAST-NEXT: vpsravd {{.*}}(%rip), %xmm0, %xmm0
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; AVX2-FAST-NEXT: vzeroupper
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; AVX2-FAST-NEXT: retq
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%1 = lshr <4 x i64> %x, <i64 32, i64 32, i64 32, i64 32>
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%2 = trunc <4 x i64> %1 to <4 x i32>
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%3 = ashr <4 x i32> %2, <i32 0, i32 1, i32 2, i32 3>
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ret <4 x i32> %3
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}
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; fold (sra (trunc (sra x, c1)), c2) -> (trunc (sra x, c1 + c2))
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; if c1 is equal to the number of bits the trunc removes
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define <4 x i32> @combine_vec_ashr_trunc_ashr(<4 x i64> %x) {
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; SSE-LABEL: combine_vec_ashr_trunc_ashr:
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; SSE: # %bb.0:
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; SSE-NEXT: shufps {{.*#+}} xmm0 = xmm0[1,3],xmm1[1,3]
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; SSE-NEXT: movaps %xmm0, %xmm2
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; SSE-NEXT: psrad $2, %xmm2
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; SSE-NEXT: pblendw {{.*#+}} xmm2 = xmm0[0,1,2,3],xmm2[4,5,6,7]
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; SSE-NEXT: psrad $1, %xmm0
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; SSE-NEXT: psrad $3, %xmm1
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; SSE-NEXT: pblendw {{.*#+}} xmm1 = xmm0[0,1,2,3],xmm1[4,5,6,7]
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; SSE-NEXT: pblendw {{.*#+}} xmm2 = xmm2[0,1],xmm1[2,3],xmm2[4,5],xmm1[6,7]
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; SSE-NEXT: movdqa %xmm2, %xmm0
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; SSE-NEXT: retq
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;
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; AVX2-SLOW-LABEL: combine_vec_ashr_trunc_ashr:
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; AVX2-SLOW: # %bb.0:
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; AVX2-SLOW-NEXT: vextractf128 $1, %ymm0, %xmm1
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; AVX2-SLOW-NEXT: vshufps {{.*#+}} xmm0 = xmm0[1,3],xmm1[1,3]
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; AVX2-SLOW-NEXT: vpsravd {{.*}}(%rip), %xmm0, %xmm0
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; AVX2-SLOW-NEXT: vzeroupper
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; AVX2-SLOW-NEXT: retq
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;
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; AVX2-FAST-LABEL: combine_vec_ashr_trunc_ashr:
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; AVX2-FAST: # %bb.0:
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; AVX2-FAST-NEXT: vmovdqa {{.*#+}} ymm1 = <1,3,5,7,u,u,u,u>
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; AVX2-FAST-NEXT: vpermd %ymm0, %ymm1, %ymm0
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; AVX2-FAST-NEXT: vpsravd {{.*}}(%rip), %xmm0, %xmm0
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; AVX2-FAST-NEXT: vzeroupper
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; AVX2-FAST-NEXT: retq
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%1 = ashr <4 x i64> %x, <i64 32, i64 32, i64 32, i64 32>
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%2 = trunc <4 x i64> %1 to <4 x i32>
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%3 = ashr <4 x i32> %2, <i32 0, i32 1, i32 2, i32 3>
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ret <4 x i32> %3
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}
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; If the sign bit is known to be zero, switch this to a SRL.
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define <4 x i32> @combine_vec_ashr_positive(<4 x i32> %x, <4 x i32> %y) {
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; SSE-LABEL: combine_vec_ashr_positive:
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; SSE: # %bb.0:
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; SSE-NEXT: pand {{.*}}(%rip), %xmm0
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; SSE-NEXT: pshuflw {{.*#+}} xmm2 = xmm1[2,3,3,3,4,5,6,7]
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; SSE-NEXT: movdqa %xmm0, %xmm3
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; SSE-NEXT: psrld %xmm2, %xmm3
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; SSE-NEXT: pshufd {{.*#+}} xmm2 = xmm1[2,3,2,3]
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; SSE-NEXT: pshuflw {{.*#+}} xmm4 = xmm2[2,3,3,3,4,5,6,7]
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; SSE-NEXT: movdqa %xmm0, %xmm5
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; SSE-NEXT: psrld %xmm4, %xmm5
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; SSE-NEXT: pblendw {{.*#+}} xmm5 = xmm3[0,1,2,3],xmm5[4,5,6,7]
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; SSE-NEXT: pshuflw {{.*#+}} xmm1 = xmm1[0,1,1,1,4,5,6,7]
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; SSE-NEXT: movdqa %xmm0, %xmm3
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; SSE-NEXT: psrld %xmm1, %xmm3
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; SSE-NEXT: pshuflw {{.*#+}} xmm1 = xmm2[0,1,1,1,4,5,6,7]
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; SSE-NEXT: psrld %xmm1, %xmm0
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; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm3[0,1,2,3],xmm0[4,5,6,7]
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; SSE-NEXT: pblendw {{.*#+}} xmm0 = xmm0[0,1],xmm5[2,3],xmm0[4,5],xmm5[6,7]
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; SSE-NEXT: retq
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;
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; AVX-LABEL: combine_vec_ashr_positive:
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; AVX: # %bb.0:
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; AVX-NEXT: vpand {{.*}}(%rip), %xmm0, %xmm0
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; AVX-NEXT: vpsrlvd %xmm1, %xmm0, %xmm0
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; AVX-NEXT: retq
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%1 = and <4 x i32> %x, <i32 15, i32 255, i32 4095, i32 65535>
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%2 = ashr <4 x i32> %1, %y
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ret <4 x i32> %2
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}
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define <4 x i32> @combine_vec_ashr_positive_splat(<4 x i32> %x, <4 x i32> %y) {
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; SSE-LABEL: combine_vec_ashr_positive_splat:
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; SSE: # %bb.0:
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; SSE-NEXT: xorps %xmm0, %xmm0
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; SSE-NEXT: retq
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;
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; AVX-LABEL: combine_vec_ashr_positive_splat:
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; AVX: # %bb.0:
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; AVX-NEXT: vxorps %xmm0, %xmm0, %xmm0
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; AVX-NEXT: retq
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%1 = and <4 x i32> %x, <i32 1023, i32 1023, i32 1023, i32 1023>
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%2 = ashr <4 x i32> %1, <i32 10, i32 10, i32 10, i32 10>
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ret <4 x i32> %2
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}
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