vselect-constants.ll
8.84 KB
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=sse2 | FileCheck %s --check-prefix=ALL --check-prefix=SSE
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=avx | FileCheck %s --check-prefix=ALL --check-prefix=AVX
; First, check the generic pattern for any 2 vector constants. Then, check special cases where
; the constants are all off-by-one. Finally, check the extra special cases where the constants
; include 0 or -1.
; Each minimal select test is repeated with a more typical pattern that includes a compare to
; generate the condition value.
; TODO: If we don't have blendv, this can definitely be improved. There's also a selection of
; chips where it makes sense to transform the general case blendv to 2 bit-ops. That should be
; a uarch-specfic transform. At some point (Ryzen?), the implementation should catch up to the
; architecture, so blendv is as fast as a single bit-op.
define <4 x i32> @sel_C1_or_C2_vec(<4 x i1> %cond) {
; SSE-LABEL: sel_C1_or_C2_vec:
; SSE: # %bb.0:
; SSE-NEXT: pslld $31, %xmm0
; SSE-NEXT: psrad $31, %xmm0
; SSE-NEXT: movdqa %xmm0, %xmm1
; SSE-NEXT: pandn {{.*}}(%rip), %xmm1
; SSE-NEXT: pand {{.*}}(%rip), %xmm0
; SSE-NEXT: por %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: sel_C1_or_C2_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpslld $31, %xmm0, %xmm0
; AVX-NEXT: vmovaps {{.*#+}} xmm1 = [42,0,4294967294,4294967295]
; AVX-NEXT: vblendvps %xmm0, {{.*}}(%rip), %xmm1, %xmm0
; AVX-NEXT: retq
%add = select <4 x i1> %cond, <4 x i32> <i32 3000, i32 1, i32 -1, i32 0>, <4 x i32> <i32 42, i32 0, i32 -2, i32 -1>
ret <4 x i32> %add
}
define <4 x i32> @cmp_sel_C1_or_C2_vec(<4 x i32> %x, <4 x i32> %y) {
; SSE-LABEL: cmp_sel_C1_or_C2_vec:
; SSE: # %bb.0:
; SSE-NEXT: pcmpeqd %xmm1, %xmm0
; SSE-NEXT: movdqa %xmm0, %xmm1
; SSE-NEXT: pandn {{.*}}(%rip), %xmm1
; SSE-NEXT: pand {{.*}}(%rip), %xmm0
; SSE-NEXT: por %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: cmp_sel_C1_or_C2_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpcmpeqd %xmm1, %xmm0, %xmm0
; AVX-NEXT: vmovaps {{.*#+}} xmm1 = [42,0,4294967294,4294967295]
; AVX-NEXT: vblendvps %xmm0, {{.*}}(%rip), %xmm1, %xmm0
; AVX-NEXT: retq
%cond = icmp eq <4 x i32> %x, %y
%add = select <4 x i1> %cond, <4 x i32> <i32 3000, i32 1, i32 -1, i32 0>, <4 x i32> <i32 42, i32 0, i32 -2, i32 -1>
ret <4 x i32> %add
}
define <4 x i32> @sel_Cplus1_or_C_vec(<4 x i1> %cond) {
; SSE-LABEL: sel_Cplus1_or_C_vec:
; SSE: # %bb.0:
; SSE-NEXT: pand {{.*}}(%rip), %xmm0
; SSE-NEXT: paddd {{.*}}(%rip), %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: sel_Cplus1_or_C_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpand {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT: vpaddd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT: retq
%add = select <4 x i1> %cond, <4 x i32> <i32 43, i32 1, i32 -1, i32 0>, <4 x i32> <i32 42, i32 0, i32 -2, i32 -1>
ret <4 x i32> %add
}
define <4 x i32> @cmp_sel_Cplus1_or_C_vec(<4 x i32> %x, <4 x i32> %y) {
; SSE-LABEL: cmp_sel_Cplus1_or_C_vec:
; SSE: # %bb.0:
; SSE-NEXT: pcmpeqd %xmm1, %xmm0
; SSE-NEXT: movdqa {{.*#+}} xmm1 = [42,0,4294967294,4294967295]
; SSE-NEXT: psubd %xmm0, %xmm1
; SSE-NEXT: movdqa %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: cmp_sel_Cplus1_or_C_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpcmpeqd %xmm1, %xmm0, %xmm0
; AVX-NEXT: vmovdqa {{.*#+}} xmm1 = [42,0,4294967294,4294967295]
; AVX-NEXT: vpsubd %xmm0, %xmm1, %xmm0
; AVX-NEXT: retq
%cond = icmp eq <4 x i32> %x, %y
%add = select <4 x i1> %cond, <4 x i32> <i32 43, i32 1, i32 -1, i32 0>, <4 x i32> <i32 42, i32 0, i32 -2, i32 -1>
ret <4 x i32> %add
}
define <4 x i32> @sel_Cminus1_or_C_vec(<4 x i1> %cond) {
; SSE-LABEL: sel_Cminus1_or_C_vec:
; SSE: # %bb.0:
; SSE-NEXT: pslld $31, %xmm0
; SSE-NEXT: psrad $31, %xmm0
; SSE-NEXT: paddd {{.*}}(%rip), %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: sel_Cminus1_or_C_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpslld $31, %xmm0, %xmm0
; AVX-NEXT: vpsrad $31, %xmm0, %xmm0
; AVX-NEXT: vpaddd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT: retq
%add = select <4 x i1> %cond, <4 x i32> <i32 43, i32 1, i32 -1, i32 0>, <4 x i32> <i32 44, i32 2, i32 0, i32 1>
ret <4 x i32> %add
}
define <4 x i32> @cmp_sel_Cminus1_or_C_vec(<4 x i32> %x, <4 x i32> %y) {
; SSE-LABEL: cmp_sel_Cminus1_or_C_vec:
; SSE: # %bb.0:
; SSE-NEXT: pcmpeqd %xmm1, %xmm0
; SSE-NEXT: paddd {{.*}}(%rip), %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: cmp_sel_Cminus1_or_C_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpcmpeqd %xmm1, %xmm0, %xmm0
; AVX-NEXT: vpaddd {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT: retq
%cond = icmp eq <4 x i32> %x, %y
%add = select <4 x i1> %cond, <4 x i32> <i32 43, i32 1, i32 -1, i32 0>, <4 x i32> <i32 44, i32 2, i32 0, i32 1>
ret <4 x i32> %add
}
define <4 x i32> @sel_minus1_or_0_vec(<4 x i1> %cond) {
; SSE-LABEL: sel_minus1_or_0_vec:
; SSE: # %bb.0:
; SSE-NEXT: pslld $31, %xmm0
; SSE-NEXT: psrad $31, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: sel_minus1_or_0_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpslld $31, %xmm0, %xmm0
; AVX-NEXT: vpsrad $31, %xmm0, %xmm0
; AVX-NEXT: retq
%add = select <4 x i1> %cond, <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>, <4 x i32> <i32 0, i32 0, i32 0, i32 0>
ret <4 x i32> %add
}
define <4 x i32> @cmp_sel_minus1_or_0_vec(<4 x i32> %x, <4 x i32> %y) {
; SSE-LABEL: cmp_sel_minus1_or_0_vec:
; SSE: # %bb.0:
; SSE-NEXT: pcmpeqd %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: cmp_sel_minus1_or_0_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpcmpeqd %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%cond = icmp eq <4 x i32> %x, %y
%add = select <4 x i1> %cond, <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>, <4 x i32> <i32 0, i32 0, i32 0, i32 0>
ret <4 x i32> %add
}
define <4 x i32> @sel_0_or_minus1_vec(<4 x i1> %cond) {
; SSE-LABEL: sel_0_or_minus1_vec:
; SSE: # %bb.0:
; SSE-NEXT: pand {{.*}}(%rip), %xmm0
; SSE-NEXT: pcmpeqd %xmm1, %xmm1
; SSE-NEXT: paddd %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: sel_0_or_minus1_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpand {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT: vpcmpeqd %xmm1, %xmm1, %xmm1
; AVX-NEXT: vpaddd %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%add = select <4 x i1> %cond, <4 x i32> <i32 0, i32 0, i32 0, i32 0>, <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>
ret <4 x i32> %add
}
define <4 x i32> @cmp_sel_0_or_minus1_vec(<4 x i32> %x, <4 x i32> %y) {
; SSE-LABEL: cmp_sel_0_or_minus1_vec:
; SSE: # %bb.0:
; SSE-NEXT: pcmpeqd %xmm1, %xmm0
; SSE-NEXT: pcmpeqd %xmm1, %xmm1
; SSE-NEXT: pxor %xmm1, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: cmp_sel_0_or_minus1_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpcmpeqd %xmm1, %xmm0, %xmm0
; AVX-NEXT: vpcmpeqd %xmm1, %xmm1, %xmm1
; AVX-NEXT: vpxor %xmm1, %xmm0, %xmm0
; AVX-NEXT: retq
%cond = icmp eq <4 x i32> %x, %y
%add = select <4 x i1> %cond, <4 x i32> <i32 0, i32 0, i32 0, i32 0>, <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>
ret <4 x i32> %add
}
define <4 x i32> @sel_1_or_0_vec(<4 x i1> %cond) {
; SSE-LABEL: sel_1_or_0_vec:
; SSE: # %bb.0:
; SSE-NEXT: andps {{.*}}(%rip), %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: sel_1_or_0_vec:
; AVX: # %bb.0:
; AVX-NEXT: vandps {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT: retq
%add = select <4 x i1> %cond, <4 x i32> <i32 1, i32 1, i32 1, i32 1>, <4 x i32> <i32 0, i32 0, i32 0, i32 0>
ret <4 x i32> %add
}
define <4 x i32> @cmp_sel_1_or_0_vec(<4 x i32> %x, <4 x i32> %y) {
; SSE-LABEL: cmp_sel_1_or_0_vec:
; SSE: # %bb.0:
; SSE-NEXT: pcmpeqd %xmm1, %xmm0
; SSE-NEXT: psrld $31, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: cmp_sel_1_or_0_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpcmpeqd %xmm1, %xmm0, %xmm0
; AVX-NEXT: vpsrld $31, %xmm0, %xmm0
; AVX-NEXT: retq
%cond = icmp eq <4 x i32> %x, %y
%add = select <4 x i1> %cond, <4 x i32> <i32 1, i32 1, i32 1, i32 1>, <4 x i32> <i32 0, i32 0, i32 0, i32 0>
ret <4 x i32> %add
}
define <4 x i32> @sel_0_or_1_vec(<4 x i1> %cond) {
; SSE-LABEL: sel_0_or_1_vec:
; SSE: # %bb.0:
; SSE-NEXT: andnps {{.*}}(%rip), %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: sel_0_or_1_vec:
; AVX: # %bb.0:
; AVX-NEXT: vandnps {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT: retq
%add = select <4 x i1> %cond, <4 x i32> <i32 0, i32 0, i32 0, i32 0>, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
ret <4 x i32> %add
}
define <4 x i32> @cmp_sel_0_or_1_vec(<4 x i32> %x, <4 x i32> %y) {
; SSE-LABEL: cmp_sel_0_or_1_vec:
; SSE: # %bb.0:
; SSE-NEXT: pcmpeqd %xmm1, %xmm0
; SSE-NEXT: pandn {{.*}}(%rip), %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: cmp_sel_0_or_1_vec:
; AVX: # %bb.0:
; AVX-NEXT: vpcmpeqd %xmm1, %xmm0, %xmm0
; AVX-NEXT: vpandn {{.*}}(%rip), %xmm0, %xmm0
; AVX-NEXT: retq
%cond = icmp eq <4 x i32> %x, %y
%add = select <4 x i1> %cond, <4 x i32> <i32 0, i32 0, i32 0, i32 0>, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
ret <4 x i32> %add
}