Index: llvm/trunk/test/Transforms/InstCombine/clamp-to-minmax.ll =================================================================== --- llvm/trunk/test/Transforms/InstCombine/clamp-to-minmax.ll +++ llvm/trunk/test/Transforms/InstCombine/clamp-to-minmax.ll @@ -0,0 +1,500 @@ +; 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: [[CMP1:%.*]] = fcmp fast 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 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: [[CMP1:%.*]] = fcmp fast 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 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: [[CMP1:%.*]] = fcmp fast 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 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: [[CMP1:%.*]] = fcmp fast 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 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: [[MIN:%.*]] = select i1 [[CMP2_INV]], float 2.550000e+02, float [[X]] +; CHECK-NEXT: [[CMP1:%.*]] = fcmp fast 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 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: [[MIN:%.*]] = select i1 [[CMP2_INV]], float 2.550000e+02, float [[X]] +; CHECK-NEXT: [[CMP1:%.*]] = fcmp fast 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 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: [[MAX:%.*]] = select i1 [[CMP2_INV]], float 1.000000e+00, float [[X]] +; CHECK-NEXT: [[CMP1:%.*]] = fcmp fast 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 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: [[MAX:%.*]] = select i1 [[CMP2_INV]], float 1.000000e+00, float [[X]] +; CHECK-NEXT: [[CMP1:%.*]] = fcmp fast 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 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 +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: [[INNER_SEL:%.*]] = select i1 [[INNER_CMP_INV]], float 2.550000e+02, float [[X]] +; CHECK-NEXT: [[OUTER_CMP:%.*]] = fcmp fast ugt float [[X]], 1.000000e+00 +; CHECK-NEXT: [[R:%.*]] = select i1 [[OUTER_CMP]], float [[INNER_SEL]], 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 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: [[INNER_SEL:%.*]] = select 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 [[INNER_SEL]], 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: [[INNER_SEL:%.*]] = select 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 [[INNER_SEL]], 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: [[MIN:%.*]] = 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 [[MIN]] +; 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: [[MIN:%.*]] = 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 [[MIN]] +; 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: [[MAX:%.*]] = 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 [[MAX]] +; 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: [[MAX:%.*]] = 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 [[MAX]] +; 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: [[MIN:%.*]] = 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 [[MIN]] +; 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: [[MIN:%.*]] = 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 [[MIN]] +; 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: [[MAX:%.*]] = 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 [[MAX]] +; 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: [[MAX:%.*]] = 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 [[MAX]] +; 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 +}