derek.holloway
7502bf64a4
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188 lines
10 KiB
LLVM
188 lines
10 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt -S -passes=instcombine < %s | FileCheck %s
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declare nofpclass(inf zero sub norm) <4 x half> @returns_nan()
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declare nofpclass(nan zero sub norm) <4 x half> @returns_inf()
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declare nofpclass(inf zero sub norm) half @returns_nan_f16()
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declare nofpclass(inf zero sub norm) <vscale x 4 x half> @returns_nan_nxv4f16()
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define nofpclass(inf zero sub norm) <4 x half> @ret_only_nan__insert_unknown_unknown(<4 x half> %vec, half %elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(inf zero sub norm) <4 x half> @ret_only_nan__insert_unknown_unknown(
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; CHECK-SAME: <4 x half> [[VEC:%.*]], half [[ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x half> [[VEC]], half [[ELT]], i32 [[IDX]]
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; CHECK-NEXT: ret <4 x half> [[INSERT]]
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;
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%insert = insertelement <4 x half> %vec, half %elt, i32 %idx
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ret <4 x half> %insert
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}
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define nofpclass(qnan inf zero sub norm) <4 x half> @ret_only_snan__insert_unknown_unknown(<4 x half> %vec, half %elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(qnan inf zero sub norm) <4 x half> @ret_only_snan__insert_unknown_unknown(
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; CHECK-SAME: <4 x half> [[VEC:%.*]], half [[ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x half> [[VEC]], half [[ELT]], i32 [[IDX]]
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; CHECK-NEXT: ret <4 x half> [[INSERT]]
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;
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%insert = insertelement <4 x half> %vec, half %elt, i32 %idx
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ret <4 x half> %insert
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}
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define nofpclass(snan inf zero sub norm) <4 x half> @ret_only_qnan__insert_unknown_unknown(<4 x half> %vec, half %elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(snan inf zero sub norm) <4 x half> @ret_only_qnan__insert_unknown_unknown(
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; CHECK-SAME: <4 x half> [[VEC:%.*]], half [[ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x half> [[VEC]], half [[ELT]], i32 [[IDX]]
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; CHECK-NEXT: ret <4 x half> [[INSERT]]
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;
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%insert = insertelement <4 x half> %vec, half %elt, i32 %idx
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ret <4 x half> %insert
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}
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define nofpclass(nan zero sub norm) <4 x half> @ret_only_inf__insert_unknown_unknown(<4 x half> %vec, half %elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(nan zero sub norm) <4 x half> @ret_only_inf__insert_unknown_unknown(
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; CHECK-SAME: <4 x half> [[VEC:%.*]], half [[ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x half> [[VEC]], half [[ELT]], i32 [[IDX]]
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; CHECK-NEXT: ret <4 x half> [[INSERT]]
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;
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%insert = insertelement <4 x half> %vec, half %elt, i32 %idx
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ret <4 x half> %insert
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}
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define nofpclass(nan ninf zero sub norm) <4 x half> @ret_only_pinf__insert_unknown_unknown(<4 x half> %vec, half %elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(nan ninf zero sub norm) <4 x half> @ret_only_pinf__insert_unknown_unknown(
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; CHECK-SAME: <4 x half> [[VEC:%.*]], half [[ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: ret <4 x half> splat (half +inf)
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;
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%insert = insertelement <4 x half> %vec, half %elt, i32 %idx
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ret <4 x half> %insert
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}
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define nofpclass(nan pinf zero sub norm) <4 x half> @ret_only_ninf__insert_unknown_unknown(<4 x half> %vec, half %elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(nan pinf zero sub norm) <4 x half> @ret_only_ninf__insert_unknown_unknown(
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; CHECK-SAME: <4 x half> [[VEC:%.*]], half [[ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: ret <4 x half> splat (half -inf)
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;
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%insert = insertelement <4 x half> %vec, half %elt, i32 %idx
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ret <4 x half> %insert
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}
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define nofpclass(nan inf sub norm) <4 x half> @ret_only_zero__insert_unknown_unknown(<4 x half> %vec, half %elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(nan inf sub norm) <4 x half> @ret_only_zero__insert_unknown_unknown(
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; CHECK-SAME: <4 x half> [[VEC:%.*]], half [[ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x half> [[VEC]], half [[ELT]], i32 [[IDX]]
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; CHECK-NEXT: ret <4 x half> [[INSERT]]
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;
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%insert = insertelement <4 x half> %vec, half %elt, i32 %idx
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ret <4 x half> %insert
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}
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define nofpclass(nan inf nzero sub norm) <4 x half> @ret_only_pzero__insert_unknown_unknown(<4 x half> %vec, half %elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(nan inf nzero sub norm) <4 x half> @ret_only_pzero__insert_unknown_unknown(
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; CHECK-SAME: <4 x half> [[VEC:%.*]], half [[ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: ret <4 x half> zeroinitializer
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;
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%insert = insertelement <4 x half> %vec, half %elt, i32 %idx
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ret <4 x half> %insert
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}
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define nofpclass(nan inf pzero sub norm) <4 x half> @ret_only_nzero__insert_unknown_unknown(<4 x half> %vec, half %elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(nan inf pzero sub norm) <4 x half> @ret_only_nzero__insert_unknown_unknown(
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; CHECK-SAME: <4 x half> [[VEC:%.*]], half [[ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: ret <4 x half> splat (half -0.000000e+00)
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;
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%insert = insertelement <4 x half> %vec, half %elt, i32 %idx
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ret <4 x half> %insert
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}
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; Remove select
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define nofpclass(nan) <4 x half> @ret_nonan__insert__select_unknown_nan__unknown(i1 %cond, <4 x half> %unknown.vec, half %elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(nan) <4 x half> @ret_nonan__insert__select_unknown_nan__unknown(
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; CHECK-SAME: i1 [[COND:%.*]], <4 x half> [[UNKNOWN_VEC:%.*]], half [[ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: [[NAN_VEC:%.*]] = call <4 x half> @returns_nan()
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x half> [[UNKNOWN_VEC]], half [[ELT]], i32 [[IDX]]
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; CHECK-NEXT: ret <4 x half> [[INSERT]]
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;
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%nan.vec = call <4 x half> @returns_nan()
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%select.vec = select i1 %cond, <4 x half> %unknown.vec, <4 x half> %nan.vec
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%insert = insertelement <4 x half> %select.vec, half %elt, i32 %idx
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ret <4 x half> %insert
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}
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; Remove select
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define nofpclass(nan) <4 x half> @ret_nonan__insert__unknown__select_unknown_nan(i1 %cond, <4 x half> %unknown.vec, half %unknown.elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(nan) <4 x half> @ret_nonan__insert__unknown__select_unknown_nan(
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; CHECK-SAME: i1 [[COND:%.*]], <4 x half> [[UNKNOWN_VEC:%.*]], half [[UNKNOWN_ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: [[NAN_ELT:%.*]] = call half @returns_nan_f16()
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x half> [[UNKNOWN_VEC]], half [[UNKNOWN_ELT]], i32 [[IDX]]
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; CHECK-NEXT: ret <4 x half> [[INSERT]]
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;
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%nan.elt = call half @returns_nan_f16()
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%select.elt = select i1 %cond, half %unknown.elt, half %nan.elt
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%insert = insertelement <4 x half> %unknown.vec, half %select.elt, i32 %idx
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ret <4 x half> %insert
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}
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; Remove selects
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define nofpclass(nan) <4 x half> @ret_nonan__insert__select_unknown_nan__select_unknown_nan(i1 %cond, <4 x half> %unknown.vec, half %unknown.elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(nan) <4 x half> @ret_nonan__insert__select_unknown_nan__select_unknown_nan(
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; CHECK-SAME: i1 [[COND:%.*]], <4 x half> [[UNKNOWN_VEC:%.*]], half [[UNKNOWN_ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: [[NAN_VEC:%.*]] = call <4 x half> @returns_nan()
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; CHECK-NEXT: [[NAN_ELT:%.*]] = call half @returns_nan_f16()
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x half> [[UNKNOWN_VEC]], half [[UNKNOWN_ELT]], i32 [[IDX]]
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; CHECK-NEXT: ret <4 x half> [[INSERT]]
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;
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%nan.vec = call <4 x half> @returns_nan()
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%nan.elt = call half @returns_nan_f16()
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%select.elt = select i1 %cond, half %unknown.elt, half %nan.elt
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%select.vec = select i1 %cond, <4 x half> %unknown.vec, <4 x half> %nan.vec
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%insert = insertelement <4 x half> %select.vec, half %select.elt, i32 %idx
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ret <4 x half> %insert
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}
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; Remove selects
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define nofpclass(nan) <vscale x 4 x half> @ret_nonan__insert__select_unknown_nan__select_unknown_nan__scalable(i1 %cond, <vscale x 4 x half> %unknown.vec, half %unknown.elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(nan) <vscale x 4 x half> @ret_nonan__insert__select_unknown_nan__select_unknown_nan__scalable(
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; CHECK-SAME: i1 [[COND:%.*]], <vscale x 4 x half> [[UNKNOWN_VEC:%.*]], half [[UNKNOWN_ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: [[NAN_VEC:%.*]] = call <vscale x 4 x half> @returns_nan_nxv4f16()
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; CHECK-NEXT: [[NAN_ELT:%.*]] = call half @returns_nan_f16()
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <vscale x 4 x half> [[UNKNOWN_VEC]], half [[UNKNOWN_ELT]], i32 [[IDX]]
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; CHECK-NEXT: ret <vscale x 4 x half> [[INSERT]]
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;
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%nan.vec = call <vscale x 4 x half> @returns_nan_nxv4f16()
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%nan.elt = call half @returns_nan_f16()
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%select.elt = select i1 %cond, half %unknown.elt, half %nan.elt
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%select.vec = select i1 %cond, <vscale x 4 x half> %unknown.vec, <vscale x 4 x half> %nan.vec
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%insert = insertelement <vscale x 4 x half> %select.vec, half %select.elt, i32 %idx
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ret <vscale x 4 x half> %insert
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}
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; We cannot prove the source of the exp is nan due to the inserted
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; element, so it won't be rewritten to fadd
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define nofpclass(snan) <4 x half> @insert_unknown_taints_known_nan_vector_input(half %unknown.elt, i32 %idx) {
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; CHECK-LABEL: define nofpclass(snan) <4 x half> @insert_unknown_taints_known_nan_vector_input(
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; CHECK-SAME: half [[UNKNOWN_ELT:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: [[NAN_VEC:%.*]] = call <4 x half> @returns_nan()
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x half> [[NAN_VEC]], half [[UNKNOWN_ELT]], i32 [[IDX]]
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; CHECK-NEXT: [[EXP:%.*]] = call <4 x half> @llvm.exp.v4f16(<4 x half> [[INSERT]])
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; CHECK-NEXT: ret <4 x half> [[EXP]]
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;
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%nan.vec = call <4 x half> @returns_nan()
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%insert = insertelement <4 x half> %nan.vec, half %unknown.elt, i32 %idx
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%exp = call <4 x half> @llvm.exp.v4f16(<4 x half> %insert)
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ret <4 x half> %exp
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}
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; Do not rewrite exp to fadd
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define nofpclass(snan) <4 x half> @insert_unknown_vector_taints_known_nan_vector_insert(<4 x half> %unknown.vec, i32 %idx) {
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; CHECK-LABEL: define nofpclass(snan) <4 x half> @insert_unknown_vector_taints_known_nan_vector_insert(
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; CHECK-SAME: <4 x half> [[UNKNOWN_VEC:%.*]], i32 [[IDX:%.*]]) {
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; CHECK-NEXT: [[NAN_ELT:%.*]] = call half @returns_nan_f16()
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; CHECK-NEXT: [[INSERT:%.*]] = insertelement <4 x half> [[UNKNOWN_VEC]], half [[NAN_ELT]], i32 [[IDX]]
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; CHECK-NEXT: [[EXP:%.*]] = call <4 x half> @llvm.exp.v4f16(<4 x half> [[INSERT]])
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; CHECK-NEXT: ret <4 x half> [[EXP]]
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;
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%nan.elt = call half @returns_nan_f16()
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%insert = insertelement <4 x half> %unknown.vec, half %nan.elt, i32 %idx
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%exp = call <4 x half> @llvm.exp.v4f16(<4 x half> %insert)
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ret <4 x half> %exp
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}
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