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llvm-for-llvmta/test/Transforms/InstCombine/clamp-to-minmax.ll

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2022-04-25 10:02:23 +02:00
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
; (X < C1) ? C1 : MIN(X, C2)
define float @clamp_float_fast_ordered_strict_maxmin(float %x) {
; CHECK-LABEL: @clamp_float_fast_ordered_strict_maxmin(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp fast olt float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], float [[X]], float 2.550000e+02
; CHECK-NEXT: [[TMP1:%.*]] = call fast float @llvm.maxnum.f32(float [[MIN]], float 1.000000e+00)
; CHECK-NEXT: ret float [[TMP1]]
;
%cmp2 = fcmp fast olt float %x, 255.0
%min = select i1 %cmp2, float %x, float 255.0
%cmp1 = fcmp fast olt float %x, 1.0
%r = select i1 %cmp1, float 1.0, float %min
ret float %r
}
; (X <= C1) ? C1 : MIN(X, C2)
define float @clamp_float_fast_ordered_nonstrict_maxmin(float %x) {
; CHECK-LABEL: @clamp_float_fast_ordered_nonstrict_maxmin(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp fast olt float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], float [[X]], float 2.550000e+02
; CHECK-NEXT: [[TMP1:%.*]] = call fast float @llvm.maxnum.f32(float [[MIN]], float 1.000000e+00)
; CHECK-NEXT: ret float [[TMP1]]
;
%cmp2 = fcmp fast olt float %x, 255.0
%min = select i1 %cmp2, float %x, float 255.0
%cmp1 = fcmp fast ole float %x, 1.0
%r = select i1 %cmp1, float 1.0, float %min
ret float %r
}
; (X > C1) ? C1 : MAX(X, C2)
define float @clamp_float_fast_ordered_strict_minmax(float %x) {
; CHECK-LABEL: @clamp_float_fast_ordered_strict_minmax(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp fast ogt float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], float [[X]], float 1.000000e+00
; CHECK-NEXT: [[TMP1:%.*]] = call fast float @llvm.minnum.f32(float [[MAX]], float 2.550000e+02)
; CHECK-NEXT: ret float [[TMP1]]
;
%cmp2 = fcmp fast ogt float %x, 1.0
%max = select i1 %cmp2, float %x, float 1.0
%cmp1 = fcmp fast ogt float %x, 255.0
%r = select i1 %cmp1, float 255.0, float %max
ret float %r
}
; (X >= C1) ? C1 : MAX(X, C2)
define float @clamp_float_fast_ordered_nonstrict_minmax(float %x) {
; CHECK-LABEL: @clamp_float_fast_ordered_nonstrict_minmax(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp fast ogt float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], float [[X]], float 1.000000e+00
; CHECK-NEXT: [[TMP1:%.*]] = call fast float @llvm.minnum.f32(float [[MAX]], float 2.550000e+02)
; CHECK-NEXT: ret float [[TMP1]]
;
%cmp2 = fcmp fast ogt float %x, 1.0
%max = select i1 %cmp2, float %x, float 1.0
%cmp1 = fcmp fast oge float %x, 255.0
%r = select i1 %cmp1, float 255.0, float %max
ret float %r
}
; The same for unordered
; (X < C1) ? C1 : MIN(X, C2)
define float @clamp_float_fast_unordered_strict_maxmin(float %x) {
; CHECK-LABEL: @clamp_float_fast_unordered_strict_maxmin(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp fast oge float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[TMP1:%.*]] = select fast i1 [[CMP2_INV]], float 2.550000e+02, float [[X]]
; CHECK-NEXT: [[TMP2:%.*]] = call fast float @llvm.maxnum.f32(float [[TMP1]], float 1.000000e+00)
; CHECK-NEXT: ret float [[TMP2]]
;
%cmp2 = fcmp fast ult float %x, 255.0
%min = select i1 %cmp2, float %x, float 255.0
%cmp1 = fcmp fast ult float %x, 1.0
%r = select i1 %cmp1, float 1.0, float %min
ret float %r
}
; (X <= C1) ? C1 : MIN(X, C2)
define float @clamp_float_fast_unordered_nonstrict_maxmin(float %x) {
; CHECK-LABEL: @clamp_float_fast_unordered_nonstrict_maxmin(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp fast oge float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[TMP1:%.*]] = select fast i1 [[CMP2_INV]], float 2.550000e+02, float [[X]]
; CHECK-NEXT: [[TMP2:%.*]] = call fast float @llvm.maxnum.f32(float [[TMP1]], float 1.000000e+00)
; CHECK-NEXT: ret float [[TMP2]]
;
%cmp2 = fcmp fast ult float %x, 255.0
%min = select i1 %cmp2, float %x, float 255.0
%cmp1 = fcmp fast ule float %x, 1.0
%r = select i1 %cmp1, float 1.0, float %min
ret float %r
}
; (X > C1) ? C1 : MAX(X, C2)
define float @clamp_float_fast_unordered_strict_minmax(float %x) {
; CHECK-LABEL: @clamp_float_fast_unordered_strict_minmax(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp fast ole float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[TMP1:%.*]] = select fast i1 [[CMP2_INV]], float 1.000000e+00, float [[X]]
; CHECK-NEXT: [[TMP2:%.*]] = call fast float @llvm.minnum.f32(float [[TMP1]], float 2.550000e+02)
; CHECK-NEXT: ret float [[TMP2]]
;
%cmp2 = fcmp fast ugt float %x, 1.0
%max = select i1 %cmp2, float %x, float 1.0
%cmp1 = fcmp fast ugt float %x, 255.0
%r = select i1 %cmp1, float 255.0, float %max
ret float %r
}
; (X >= C1) ? C1 : MAX(X, C2)
define float @clamp_float_fast_unordered_nonstrict_minmax(float %x) {
; CHECK-LABEL: @clamp_float_fast_unordered_nonstrict_minmax(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp fast ole float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[TMP1:%.*]] = select fast i1 [[CMP2_INV]], float 1.000000e+00, float [[X]]
; CHECK-NEXT: [[TMP2:%.*]] = call fast float @llvm.minnum.f32(float [[TMP1]], float 2.550000e+02)
; CHECK-NEXT: ret float [[TMP2]]
;
%cmp2 = fcmp fast ugt float %x, 1.0
%max = select i1 %cmp2, float %x, float 1.0
%cmp1 = fcmp fast uge float %x, 255.0
%r = select i1 %cmp1, float 255.0, float %max
ret float %r
}
; Some more checks with fast
; (X > 1.0) ? min(x, 255.0) : 1.0
; That did not match because select was in inverse order.
define float @clamp_test_1(float %x) {
; CHECK-LABEL: @clamp_test_1(
; CHECK-NEXT: [[INNER_CMP_INV:%.*]] = fcmp fast oge float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[TMP1:%.*]] = select fast i1 [[INNER_CMP_INV]], float 2.550000e+02, float [[X]]
; CHECK-NEXT: [[TMP2:%.*]] = call fast float @llvm.maxnum.f32(float [[TMP1]], float 1.000000e+00)
; CHECK-NEXT: ret float [[TMP2]]
;
%inner_cmp = fcmp fast ult float %x, 255.0
%inner_sel = select i1 %inner_cmp, float %x, float 255.0
%outer_cmp = fcmp fast ugt float %x, 1.0
%r = select i1 %outer_cmp, float %inner_sel, float 1.0
ret float %r
}
; And something negative
; Like @clamp_test_1 but HighConst < LowConst
define float @clamp_negative_wrong_const(float %x) {
; CHECK-LABEL: @clamp_negative_wrong_const(
; CHECK-NEXT: [[INNER_CMP_INV:%.*]] = fcmp fast oge float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[TMP1:%.*]] = select fast i1 [[INNER_CMP_INV]], float 2.550000e+02, float [[X]]
; CHECK-NEXT: [[OUTER_CMP:%.*]] = fcmp fast ugt float [[X]], 5.120000e+02
; CHECK-NEXT: [[R:%.*]] = select i1 [[OUTER_CMP]], float [[TMP1]], float 5.120000e+02
; CHECK-NEXT: ret float [[R]]
;
%inner_cmp = fcmp fast ult float %x, 255.0
%inner_sel = select i1 %inner_cmp, float %x, float 255.0
%outer_cmp = fcmp fast ugt float %x, 512.0
%r = select i1 %outer_cmp, float %inner_sel, float 512.0
ret float %r
}
; Like @clamp_test_1 but both are min
define float @clamp_negative_same_op(float %x) {
; CHECK-LABEL: @clamp_negative_same_op(
; CHECK-NEXT: [[INNER_CMP_INV:%.*]] = fcmp fast oge float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[TMP1:%.*]] = select fast i1 [[INNER_CMP_INV]], float 2.550000e+02, float [[X]]
; CHECK-NEXT: [[OUTER_CMP:%.*]] = fcmp fast ult float [[X]], 1.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[OUTER_CMP]], float [[TMP1]], float 1.000000e+00
; CHECK-NEXT: ret float [[R]]
;
%inner_cmp = fcmp fast ult float %x, 255.0
%inner_sel = select i1 %inner_cmp, float %x, float 255.0
%outer_cmp = fcmp fast ult float %x, 1.0
%r = select i1 %outer_cmp, float %inner_sel, float 1.0
ret float %r
}
; And now without fast.
; First, check that we don't do bad things in the presence of signed zeros
define float @clamp_float_with_zero1(float %x) {
; CHECK-LABEL: @clamp_float_with_zero1(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp fast olt float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], float [[X]], float 2.550000e+02
; CHECK-NEXT: [[CMP1:%.*]] = fcmp ole float [[X]], 0.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 0.000000e+00, float [[MIN]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp fast olt float %x, 255.0
%min = select i1 %cmp2, float %x, float 255.0
%cmp1 = fcmp ole float %x, 0.0
%r = select i1 %cmp1, float 0.0, float %min
ret float %r
}
define float @clamp_float_with_zero2(float %x) {
; CHECK-LABEL: @clamp_float_with_zero2(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp fast olt float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], float [[X]], float 2.550000e+02
; CHECK-NEXT: [[CMP1:%.*]] = fcmp olt float [[X]], 0.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 0.000000e+00, float [[MIN]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp fast olt float %x, 255.0
%min = select i1 %cmp2, float %x, float 255.0
%cmp1 = fcmp olt float %x, 0.0
%r = select i1 %cmp1, float 0.0, float %min
ret float %r
}
; Also, here we care more about the ordering of the inner min/max, so
; two times more cases.
; TODO: that is not implemented yet, so these checks are for the
; future. This means that checks below can just check that
; "fcmp.*%x" happens twice for each label.
; (X < C1) ? C1 : MIN(X, C2)
define float @clamp_float_ordered_strict_maxmin1(float %x) {
; CHECK-LABEL: @clamp_float_ordered_strict_maxmin1(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp olt float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], float [[X]], float 2.550000e+02
; CHECK-NEXT: [[CMP1:%.*]] = fcmp olt float [[X]], 1.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 1.000000e+00, float [[MIN]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp olt float %x, 255.0 ; X is NaN => false
%min = select i1 %cmp2, float %x, float 255.0 ; 255.0
%cmp1 = fcmp olt float %x, 1.0 ; false
%r = select i1 %cmp1, float 1.0, float %min ; min (255.0)
ret float %r
}
define float @clamp_float_ordered_strict_maxmin2(float %x) {
; CHECK-LABEL: @clamp_float_ordered_strict_maxmin2(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp oge float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[CMP2_INV]], float 2.550000e+02, float [[X]]
; CHECK-NEXT: [[CMP1:%.*]] = fcmp olt float [[X]], 1.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 1.000000e+00, float [[TMP1]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ult float %x, 255.0 ; X is NaN => true
%min = select i1 %cmp2, float %x, float 255.0 ; NaN
%cmp1 = fcmp olt float %x, 1.0 ; false
%r = select i1 %cmp1, float 1.0, float %min ; min (NaN)
ret float %r
}
; (X <= C1) ? C1 : MIN(X, C2)
define float @clamp_float_ordered_nonstrict_maxmin1(float %x) {
; CHECK-LABEL: @clamp_float_ordered_nonstrict_maxmin1(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp olt float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], float [[X]], float 2.550000e+02
; CHECK-NEXT: [[CMP1:%.*]] = fcmp ole float [[X]], 1.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 1.000000e+00, float [[MIN]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp olt float %x, 255.0 ; X is NaN => false
%min = select i1 %cmp2, float %x, float 255.0 ; 255.0
%cmp1 = fcmp ole float %x, 1.0 ; false
%r = select i1 %cmp1, float 1.0, float %min ; min (255.0)
ret float %r
}
define float @clamp_float_ordered_nonstrict_maxmin2(float %x) {
; CHECK-LABEL: @clamp_float_ordered_nonstrict_maxmin2(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp oge float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[CMP2_INV]], float 2.550000e+02, float [[X]]
; CHECK-NEXT: [[CMP1:%.*]] = fcmp ole float [[X]], 1.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 1.000000e+00, float [[TMP1]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ult float %x, 255.0 ; x is NaN => true
%min = select i1 %cmp2, float %x, float 255.0 ; NaN
%cmp1 = fcmp ole float %x, 1.0 ; false
%r = select i1 %cmp1, float 1.0, float %min ; min (NaN)
ret float %r
}
; (X > C1) ? C1 : MAX(X, C2)
define float @clamp_float_ordered_strict_minmax1(float %x) {
; CHECK-LABEL: @clamp_float_ordered_strict_minmax1(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp ogt float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], float [[X]], float 1.000000e+00
; CHECK-NEXT: [[CMP1:%.*]] = fcmp ogt float [[X]], 2.550000e+02
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 2.550000e+02, float [[MAX]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ogt float %x, 1.0 ; x is NaN => false
%max = select i1 %cmp2, float %x, float 1.0 ; 1.0
%cmp1 = fcmp ogt float %x, 255.0 ; false
%r = select i1 %cmp1, float 255.0, float %max ; max (1.0)
ret float %r
}
define float @clamp_float_ordered_strict_minmax2(float %x) {
; CHECK-LABEL: @clamp_float_ordered_strict_minmax2(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp ole float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[CMP2_INV]], float 1.000000e+00, float [[X]]
; CHECK-NEXT: [[CMP1:%.*]] = fcmp ogt float [[X]], 2.550000e+02
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 2.550000e+02, float [[TMP1]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ugt float %x, 1.0 ; x is NaN => true
%max = select i1 %cmp2, float %x, float 1.0 ; NaN
%cmp1 = fcmp ogt float %x, 255.0 ; false
%r = select i1 %cmp1, float 255.0, float %max ; max (NaN)
ret float %r
}
; (X >= C1) ? C1 : MAX(X, C2)
define float @clamp_float_ordered_nonstrict_minmax1(float %x) {
; CHECK-LABEL: @clamp_float_ordered_nonstrict_minmax1(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp ogt float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], float [[X]], float 1.000000e+00
; CHECK-NEXT: [[CMP1:%.*]] = fcmp oge float [[X]], 2.550000e+02
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 2.550000e+02, float [[MAX]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ogt float %x, 1.0 ; x is NaN => false
%max = select i1 %cmp2, float %x, float 1.0 ; 1.0
%cmp1 = fcmp oge float %x, 255.0 ; false
%r = select i1 %cmp1, float 255.0, float %max ; max (1.0)
ret float %r
}
define float @clamp_float_ordered_nonstrict_minmax2(float %x) {
; CHECK-LABEL: @clamp_float_ordered_nonstrict_minmax2(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp ole float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[CMP2_INV]], float 1.000000e+00, float [[X]]
; CHECK-NEXT: [[CMP1:%.*]] = fcmp oge float [[X]], 2.550000e+02
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 2.550000e+02, float [[TMP1]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ugt float %x, 1.0 ; x is NaN => true
%max = select i1 %cmp2, float %x, float 1.0 ; NaN
%cmp1 = fcmp oge float %x, 255.0 ; false
%r = select i1 %cmp1, float 255.0, float %max ; max (NaN)
ret float %r
}
; The same for unordered
; (X < C1) ? C1 : MIN(X, C2)
define float @clamp_float_unordered_strict_maxmin1(float %x) {
; CHECK-LABEL: @clamp_float_unordered_strict_maxmin1(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp olt float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], float [[X]], float 2.550000e+02
; CHECK-NEXT: [[CMP1:%.*]] = fcmp ult float [[X]], 1.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 1.000000e+00, float [[MIN]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp olt float %x, 255.0 ; x is NaN => false
%min = select i1 %cmp2, float %x, float 255.0 ; 255.0
%cmp1 = fcmp ult float %x, 1.0 ; true
%r = select i1 %cmp1, float 1.0, float %min ; 1.0
ret float %r
}
define float @clamp_float_unordered_strict_maxmin2(float %x) {
; CHECK-LABEL: @clamp_float_unordered_strict_maxmin2(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp oge float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[CMP2_INV]], float 2.550000e+02, float [[X]]
; CHECK-NEXT: [[CMP1:%.*]] = fcmp ult float [[X]], 1.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 1.000000e+00, float [[TMP1]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ult float %x, 255.0 ; x is NaN => true
%min = select i1 %cmp2, float %x, float 255.0 ; NaN
%cmp1 = fcmp ult float %x, 1.0 ; true
%r = select i1 %cmp1, float 1.0, float %min ; 1.0
ret float %r
}
; (X <= C1) ? C1 : MIN(X, C2)
define float @clamp_float_unordered_nonstrict_maxmin1(float %x) {
; CHECK-LABEL: @clamp_float_unordered_nonstrict_maxmin1(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp olt float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[MIN:%.*]] = select i1 [[CMP2]], float [[X]], float 2.550000e+02
; CHECK-NEXT: [[CMP1:%.*]] = fcmp ule float [[X]], 1.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 1.000000e+00, float [[MIN]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp olt float %x, 255.0 ; x is NaN => false
%min = select i1 %cmp2, float %x, float 255.0 ; 255.0
%cmp1 = fcmp ule float %x, 1.0 ; true
%r = select i1 %cmp1, float 1.0, float %min ; 1.0
ret float %r
}
define float @clamp_float_unordered_nonstrict_maxmin2(float %x) {
; CHECK-LABEL: @clamp_float_unordered_nonstrict_maxmin2(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp oge float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[CMP2_INV]], float 2.550000e+02, float [[X]]
; CHECK-NEXT: [[CMP1:%.*]] = fcmp ule float [[X]], 1.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 1.000000e+00, float [[TMP1]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ult float %x, 255.0 ; x is NaN => true
%min = select i1 %cmp2, float %x, float 255.0 ; NaN
%cmp1 = fcmp ule float %x, 1.0 ; true
%r = select i1 %cmp1, float 1.0, float %min ; 1.0
ret float %r
}
; (X > C1) ? C1 : MAX(X, C2)
define float @clamp_float_unordered_strict_minmax1(float %x) {
; CHECK-LABEL: @clamp_float_unordered_strict_minmax1(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp ogt float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], float [[X]], float 1.000000e+00
; CHECK-NEXT: [[CMP1:%.*]] = fcmp ugt float [[X]], 2.550000e+02
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 2.550000e+02, float [[MAX]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ogt float %x, 1.0 ; x is NaN => false
%max = select i1 %cmp2, float %x, float 1.0 ; 1.0
%cmp1 = fcmp ugt float %x, 255.0 ; true
%r = select i1 %cmp1, float 255.0, float %max ; 255.0
ret float %r
}
define float @clamp_float_unordered_strict_minmax2(float %x) {
; CHECK-LABEL: @clamp_float_unordered_strict_minmax2(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp ole float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[CMP2_INV]], float 1.000000e+00, float [[X]]
; CHECK-NEXT: [[CMP1:%.*]] = fcmp ugt float [[X]], 2.550000e+02
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 2.550000e+02, float [[TMP1]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ugt float %x, 1.0 ; x is NaN => true
%max = select i1 %cmp2, float %x, float 1.0 ; NaN
%cmp1 = fcmp ugt float %x, 255.0 ; true
%r = select i1 %cmp1, float 255.0, float %max ; 255.0
ret float %r
}
; (X >= C1) ? C1 : MAX(X, C2)
define float @clamp_float_unordered_nonstrict_minmax1(float %x) {
; CHECK-LABEL: @clamp_float_unordered_nonstrict_minmax1(
; CHECK-NEXT: [[CMP2:%.*]] = fcmp ogt float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[MAX:%.*]] = select i1 [[CMP2]], float [[X]], float 1.000000e+00
; CHECK-NEXT: [[CMP1:%.*]] = fcmp uge float [[X]], 2.550000e+02
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 2.550000e+02, float [[MAX]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ogt float %x, 1.0 ; x is NaN => false
%max = select i1 %cmp2, float %x, float 1.0 ; 1.0
%cmp1 = fcmp uge float %x, 255.0 ; true
%r = select i1 %cmp1, float 255.0, float %max ; 255.0
ret float %r
}
define float @clamp_float_unordered_nonstrict_minmax2(float %x) {
; CHECK-LABEL: @clamp_float_unordered_nonstrict_minmax2(
; CHECK-NEXT: [[CMP2_INV:%.*]] = fcmp ole float [[X:%.*]], 1.000000e+00
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[CMP2_INV]], float 1.000000e+00, float [[X]]
; CHECK-NEXT: [[CMP1:%.*]] = fcmp uge float [[X]], 2.550000e+02
; CHECK-NEXT: [[R:%.*]] = select i1 [[CMP1]], float 2.550000e+02, float [[TMP1]]
; CHECK-NEXT: ret float [[R]]
;
%cmp2 = fcmp ugt float %x, 1.0 ; x is NaN => true
%max = select i1 %cmp2, float %x, float 1.0 ; NaN
%cmp1 = fcmp uge float %x, 255.0 ; true
%r = select i1 %cmp1, float 255.0, float %max ; 255.0
ret float %r
}
;; Check casts behavior
define float @ui32_clamp_and_cast_to_float(i32 %x) {
; CHECK-LABEL: @ui32_clamp_and_cast_to_float(
; CHECK-NEXT: [[LO_CMP:%.*]] = icmp eq i32 [[X:%.*]], 0
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[X]], 255
; CHECK-NEXT: [[MIN1:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 255
; CHECK-NEXT: [[TMP2:%.*]] = uitofp i32 [[MIN1]] to float
; CHECK-NEXT: [[R:%.*]] = select i1 [[LO_CMP]], float 1.000000e+00, float [[TMP2]]
; CHECK-NEXT: ret float [[R]]
;
%f_x = uitofp i32 %x to float
%up_cmp = icmp ugt i32 %x, 255
%lo_cmp = icmp ult i32 %x, 1
%min = select i1 %up_cmp, float 255.0, float %f_x
%r = select i1 %lo_cmp, float 1.0, float %min
ret float %r
}
define float @ui64_clamp_and_cast_to_float(i64 %x) {
; CHECK-LABEL: @ui64_clamp_and_cast_to_float(
; CHECK-NEXT: [[LO_CMP:%.*]] = icmp eq i64 [[X:%.*]], 0
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i64 [[X]], 255
; CHECK-NEXT: [[MIN1:%.*]] = select i1 [[TMP1]], i64 [[X]], i64 255
; CHECK-NEXT: [[TMP2:%.*]] = uitofp i64 [[MIN1]] to float
; CHECK-NEXT: [[R:%.*]] = select i1 [[LO_CMP]], float 1.000000e+00, float [[TMP2]]
; CHECK-NEXT: ret float [[R]]
;
%f_x = uitofp i64 %x to float
%up_cmp = icmp ugt i64 %x, 255
%lo_cmp = icmp ult i64 %x, 1
%min = select i1 %up_cmp, float 255.0, float %f_x
%r = select i1 %lo_cmp, float 1.0, float %min
ret float %r
}
define float @mixed_clamp_to_float_1(i32 %x) {
; CHECK-LABEL: @mixed_clamp_to_float_1(
; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[X:%.*]], 255
; CHECK-NEXT: [[SI_MIN:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 255
; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt i32 [[SI_MIN]], 1
; CHECK-NEXT: [[R1:%.*]] = select i1 [[TMP2]], i32 [[SI_MIN]], i32 1
; CHECK-NEXT: [[TMP3:%.*]] = sitofp i32 [[R1]] to float
; CHECK-NEXT: ret float [[TMP3]]
;
%si_min_cmp = icmp sgt i32 %x, 255
%si_min = select i1 %si_min_cmp, i32 255, i32 %x
%f_min = sitofp i32 %si_min to float
%f_x = sitofp i32 %x to float
%lo_cmp = fcmp ult float %f_x, 1.0
%r = select i1 %lo_cmp, float 1.0, float %f_min
ret float %r
}
define i32 @mixed_clamp_to_i32_1(float %x) {
; CHECK-LABEL: @mixed_clamp_to_i32_1(
; CHECK-NEXT: [[FLOAT_MIN_CMP:%.*]] = fcmp ogt float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[FLOAT_MIN:%.*]] = select i1 [[FLOAT_MIN_CMP]], float 2.550000e+02, float [[X]]
; CHECK-NEXT: [[I32_MIN:%.*]] = fptosi float [[FLOAT_MIN]] to i32
; CHECK-NEXT: [[I32_X:%.*]] = fptosi float [[X]] to i32
; CHECK-NEXT: [[LO_CMP:%.*]] = icmp eq i32 [[I32_X]], 0
; CHECK-NEXT: [[R:%.*]] = select i1 [[LO_CMP]], i32 1, i32 [[I32_MIN]]
; CHECK-NEXT: ret i32 [[R]]
;
%float_min_cmp = fcmp ogt float %x, 255.0
%float_min = select i1 %float_min_cmp, float 255.0, float %x
%i32_min = fptosi float %float_min to i32
%i32_x = fptosi float %x to i32
%lo_cmp = icmp ult i32 %i32_x, 1
%r = select i1 %lo_cmp, i32 1, i32 %i32_min
ret i32 %r
}
define float @mixed_clamp_to_float_2(i32 %x) {
; CHECK-LABEL: @mixed_clamp_to_float_2(
; CHECK-NEXT: [[TMP1:%.*]] = icmp slt i32 [[X:%.*]], 255
; CHECK-NEXT: [[SI_MIN:%.*]] = select i1 [[TMP1]], i32 [[X]], i32 255
; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt i32 [[SI_MIN]], 1
; CHECK-NEXT: [[R1:%.*]] = select i1 [[TMP2]], i32 [[SI_MIN]], i32 1
; CHECK-NEXT: [[TMP3:%.*]] = sitofp i32 [[R1]] to float
; CHECK-NEXT: ret float [[TMP3]]
;
%si_min_cmp = icmp sgt i32 %x, 255
%si_min = select i1 %si_min_cmp, i32 255, i32 %x
%f_min = sitofp i32 %si_min to float
%lo_cmp = icmp slt i32 %x, 1
%r = select i1 %lo_cmp, float 1.0, float %f_min
ret float %r
}
define i32 @mixed_clamp_to_i32_2(float %x) {
; CHECK-LABEL: @mixed_clamp_to_i32_2(
; CHECK-NEXT: [[FLOAT_MIN_CMP:%.*]] = fcmp ogt float [[X:%.*]], 2.550000e+02
; CHECK-NEXT: [[FLOAT_MIN:%.*]] = select i1 [[FLOAT_MIN_CMP]], float 2.550000e+02, float [[X]]
; CHECK-NEXT: [[I32_MIN:%.*]] = fptosi float [[FLOAT_MIN]] to i32
; CHECK-NEXT: [[LO_CMP:%.*]] = fcmp olt float [[X]], 1.000000e+00
; CHECK-NEXT: [[R:%.*]] = select i1 [[LO_CMP]], i32 1, i32 [[I32_MIN]]
; CHECK-NEXT: ret i32 [[R]]
;
%float_min_cmp = fcmp ogt float %x, 255.0
%float_min = select i1 %float_min_cmp, float 255.0, float %x
%i32_min = fptosi float %float_min to i32
%lo_cmp = fcmp olt float %x, 1.0
%r = select i1 %lo_cmp, i32 1, i32 %i32_min
ret i32 %r
}