; 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 }