forked from OSchip/llvm-project
268 lines
6.8 KiB
LLVM
268 lines
6.8 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
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define float @fadd_zero_strict(float %x) {
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; CHECK-LABEL: fadd_zero_strict:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorps %xmm1, %xmm1
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; CHECK-NEXT: addss %xmm1, %xmm0
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; CHECK-NEXT: retq
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%r = fadd float %x, 0.0
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ret float %r
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}
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define float @fadd_negzero(float %x) {
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; CHECK-LABEL: fadd_negzero:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%r = fadd float %x, -0.0
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ret float %r
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}
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define float @fadd_produce_zero(float %x) {
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; CHECK-LABEL: fadd_produce_zero:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorps %xmm0, %xmm0
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; CHECK-NEXT: retq
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%neg = fsub nsz float 0.0, %x
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%r = fadd nnan float %neg, %x
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ret float %r
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}
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define float @fadd_reassociate(float %x) {
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; CHECK-LABEL: fadd_reassociate:
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; CHECK: # %bb.0:
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; CHECK-NEXT: addss {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%sum = fadd float %x, 8.0
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%r = fadd reassoc nsz float %sum, 12.0
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ret float %r
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}
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define float @fadd_negzero_nsz(float %x) {
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; CHECK-LABEL: fadd_negzero_nsz:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%r = fadd nsz float %x, -0.0
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ret float %r
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}
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define float @fadd_zero_nsz(float %x) {
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; CHECK-LABEL: fadd_zero_nsz:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%r = fadd nsz float %x, 0.0
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ret float %r
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}
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define float @fsub_zero(float %x) {
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; CHECK-LABEL: fsub_zero:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%r = fsub float %x, 0.0
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ret float %r
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}
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define float @fsub_self(float %x) {
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; CHECK-LABEL: fsub_self:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorps %xmm0, %xmm0
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; CHECK-NEXT: retq
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%r = fsub nnan float %x, %x
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ret float %r
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}
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define float @fsub_neg_x_y(float %x, float %y) {
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; CHECK-LABEL: fsub_neg_x_y:
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; CHECK: # %bb.0:
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; CHECK-NEXT: subss %xmm0, %xmm1
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; CHECK-NEXT: movaps %xmm1, %xmm0
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; CHECK-NEXT: retq
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%neg = fsub nsz float 0.0, %x
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%r = fadd nsz float %neg, %y
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ret float %r
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}
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define float @fsub_neg_y(float %x, float %y) {
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; CHECK-LABEL: fsub_neg_y:
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; CHECK: # %bb.0:
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; CHECK-NEXT: mulss {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%mul = fmul float %x, 5.0
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%add = fadd float %mul, %y
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%r = fsub nsz reassoc float %y, %add
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ret float %r
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}
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define <4 x float> @fsub_neg_y_vector(<4 x float> %x, <4 x float> %y) {
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; CHECK-LABEL: fsub_neg_y_vector:
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; CHECK: # %bb.0:
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; CHECK-NEXT: mulps {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%mul = fmul <4 x float> %x, <float 5.0, float 5.0, float 5.0, float 5.0>
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%add = fadd <4 x float> %mul, %y
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%r = fsub nsz reassoc <4 x float> %y, %add
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ret <4 x float> %r
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}
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define <4 x float> @fsub_neg_y_vector_nonuniform(<4 x float> %x, <4 x float> %y) {
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; CHECK-LABEL: fsub_neg_y_vector_nonuniform:
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; CHECK: # %bb.0:
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; CHECK-NEXT: mulps {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%mul = fmul <4 x float> %x, <float 5.0, float 6.0, float 7.0, float 8.0>
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%add = fadd <4 x float> %mul, %y
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%r = fsub nsz reassoc <4 x float> %y, %add
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ret <4 x float> %r
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}
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define float @fsub_neg_y_commute(float %x, float %y) {
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; CHECK-LABEL: fsub_neg_y_commute:
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; CHECK: # %bb.0:
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; CHECK-NEXT: mulss {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%mul = fmul float %x, 5.0
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%add = fadd float %y, %mul
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%r = fsub nsz reassoc float %y, %add
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ret float %r
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}
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define <4 x float> @fsub_neg_y_commute_vector(<4 x float> %x, <4 x float> %y) {
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; CHECK-LABEL: fsub_neg_y_commute_vector:
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; CHECK: # %bb.0:
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; CHECK-NEXT: mulps {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%mul = fmul <4 x float> %x, <float 5.0, float 5.0, float 5.0, float 5.0>
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%add = fadd <4 x float> %y, %mul
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%r = fsub nsz reassoc <4 x float> %y, %add
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ret <4 x float> %r
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}
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; Y - (X + Y) --> -X
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define float @fsub_fadd_common_op_fneg(float %x, float %y) {
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; CHECK-LABEL: fsub_fadd_common_op_fneg:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorps {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%a = fadd float %x, %y
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%r = fsub reassoc nsz float %y, %a
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ret float %r
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}
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; Y - (X + Y) --> -X
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define <4 x float> @fsub_fadd_common_op_fneg_vec(<4 x float> %x, <4 x float> %y) {
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; CHECK-LABEL: fsub_fadd_common_op_fneg_vec:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorps {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%a = fadd <4 x float> %x, %y
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%r = fsub nsz reassoc <4 x float> %y, %a
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ret <4 x float> %r
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}
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; Y - (Y + X) --> -X
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; Commute operands of the 'add'.
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define float @fsub_fadd_common_op_fneg_commute(float %x, float %y) {
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; CHECK-LABEL: fsub_fadd_common_op_fneg_commute:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorps {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%a = fadd float %y, %x
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%r = fsub reassoc nsz float %y, %a
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ret float %r
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}
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; Y - (Y + X) --> -X
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define <4 x float> @fsub_fadd_common_op_fneg_commute_vec(<4 x float> %x, <4 x float> %y) {
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; CHECK-LABEL: fsub_fadd_common_op_fneg_commute_vec:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorps {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%a = fadd <4 x float> %y, %x
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%r = fsub reassoc nsz <4 x float> %y, %a
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ret <4 x float> %r
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}
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define float @fsub_negzero_strict(float %x) {
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; CHECK-LABEL: fsub_negzero_strict:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorps %xmm1, %xmm1
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; CHECK-NEXT: addss %xmm1, %xmm0
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; CHECK-NEXT: retq
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%r = fsub float %x, -0.0
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ret float %r
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}
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define float @fsub_negzero_nsz(float %x) {
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; CHECK-LABEL: fsub_negzero_nsz:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%r = fsub nsz float %x, -0.0
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ret float %r
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}
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define <4 x float> @fsub_negzero_strict_vector(<4 x float> %x) {
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; CHECK-LABEL: fsub_negzero_strict_vector:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorps %xmm1, %xmm1
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; CHECK-NEXT: addps %xmm1, %xmm0
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; CHECK-NEXT: retq
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%r = fsub <4 x float> %x, <float -0.0, float -0.0, float -0.0, float -0.0>
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ret <4 x float> %r
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}
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define <4 x float> @fsub_negzero_nsz_vector(<4 x float> %x) {
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; CHECK-LABEL: fsub_negzero_nsz_vector:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%r = fsub nsz <4 x float> %x, <float -0.0, float -0.0, float -0.0, float -0.0>
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ret <4 x float> %r
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}
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define float @fsub_zero_nsz_1(float %x) {
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; CHECK-LABEL: fsub_zero_nsz_1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%r = fsub nsz float %x, 0.0
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ret float %r
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}
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define float @fsub_zero_nsz_2(float %x) {
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; CHECK-LABEL: fsub_zero_nsz_2:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorps {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%r = fsub nsz float 0.0, %x
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ret float %r
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}
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define float @fmul_zero(float %x) {
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; CHECK-LABEL: fmul_zero:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorps %xmm0, %xmm0
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; CHECK-NEXT: retq
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%r = fmul nnan nsz float %x, 0.0
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ret float %r
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}
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define float @fmul_one(float %x) {
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; CHECK-LABEL: fmul_one:
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; CHECK: # %bb.0:
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; CHECK-NEXT: retq
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%r = fmul float %x, 1.0
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ret float %r
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}
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define float @fmul_x_const_const(float %x) {
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; CHECK-LABEL: fmul_x_const_const:
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; CHECK: # %bb.0:
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; CHECK-NEXT: mulss {{.*}}(%rip), %xmm0
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; CHECK-NEXT: retq
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%mul = fmul reassoc float %x, 9.0
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%r = fmul reassoc float %mul, 4.0
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ret float %r
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}
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