; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -passes=instcombine -S < %s | FileCheck %s declare void @use(i32) declare void @usef32(float) declare i32 @llvm.ctlz.i32(i32, i1) declare <3 x i17> @llvm.ctlz.v3i17(<3 x i17>, i1) declare i32 @llvm.cttz.i32(i32, i1) declare <3 x i5> @llvm.cttz.v3i5(<3 x i5>, i1) declare i32 @llvm.ctpop.i32(i32) declare <3 x i7> @llvm.ctpop.v3i7(<3 x i7>) declare i32 @llvm.usub.sat.i32(i32, i32) define i32 @ctlz_sel_const_true_false(i1 %b) { ; CHECK-LABEL: @ctlz_sel_const_true_false( ; CHECK-NEXT: [[C:%.*]] = select i1 [[B:%.*]], i32 29, i32 0 ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 5, i32 -7 %c = call i32 @llvm.ctlz.i32(i32 %s, i1 true) ret i32 %c } define i32 @ctlz_sel_const_true(i1 %b, i32 %x) { ; CHECK-LABEL: @ctlz_sel_const_true( ; CHECK-NEXT: [[TMP1:%.*]] = call range(i32 0, 33) i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false) ; CHECK-NEXT: [[C:%.*]] = select i1 [[B:%.*]], i32 29, i32 [[TMP1]] ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 5, i32 %x %c = call i32 @llvm.ctlz.i32(i32 %s, i1 false) ret i32 %c } define <3 x i17> @ctlz_sel_const_false(<3 x i1> %b, <3 x i17> %x) { ; CHECK-LABEL: @ctlz_sel_const_false( ; CHECK-NEXT: [[TMP1:%.*]] = call range(i17 0, 18) <3 x i17> @llvm.ctlz.v3i17(<3 x i17> [[X:%.*]], i1 true) ; CHECK-NEXT: [[C:%.*]] = select <3 x i1> [[B:%.*]], <3 x i17> [[TMP1]], <3 x i17> ; CHECK-NEXT: ret <3 x i17> [[C]] ; %s = select <3 x i1> %b, <3 x i17> %x, <3 x i17> %c = call <3 x i17> @llvm.ctlz.v3i17(<3 x i17> %s, i1 true) ret <3 x i17> %c } define i32 @ctlz_sel_const_true_false_extra_use(i1 %b) { ; CHECK-LABEL: @ctlz_sel_const_true_false_extra_use( ; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 -1, i32 7 ; CHECK-NEXT: call void @use(i32 [[S]]) ; CHECK-NEXT: [[C:%.*]] = call range(i32 0, 30) i32 @llvm.ctlz.i32(i32 [[S]], i1 true) ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 -1, i32 7 call void @use(i32 %s) %c = call i32 @llvm.ctlz.i32(i32 %s, i1 false) ret i32 %c } define i32 @cttz_sel_const_true_false(i1 %b) { ; CHECK-LABEL: @cttz_sel_const_true_false( ; CHECK-NEXT: [[C:%.*]] = select i1 [[B:%.*]], i32 2, i32 0 ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 4, i32 -7 %c = call i32 @llvm.cttz.i32(i32 %s, i1 false) ret i32 %c } define i32 @cttz_sel_const_true(i1 %b, i32 %x) { ; CHECK-LABEL: @cttz_sel_const_true( ; CHECK-NEXT: [[TMP1:%.*]] = call range(i32 0, 33) i32 @llvm.cttz.i32(i32 [[X:%.*]], i1 true) ; CHECK-NEXT: [[C:%.*]] = select i1 [[B:%.*]], i32 0, i32 [[TMP1]] ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 5, i32 %x %c = call i32 @llvm.cttz.i32(i32 %s, i1 true) ret i32 %c } define <3 x i5> @cttz_sel_const_false(<3 x i1> %b, <3 x i5> %x) { ; CHECK-LABEL: @cttz_sel_const_false( ; CHECK-NEXT: [[TMP1:%.*]] = call range(i5 0, 6) <3 x i5> @llvm.cttz.v3i5(<3 x i5> [[X:%.*]], i1 false) ; CHECK-NEXT: [[C:%.*]] = select <3 x i1> [[B:%.*]], <3 x i5> [[TMP1]], <3 x i5> ; CHECK-NEXT: ret <3 x i5> [[C]] ; %s = select <3 x i1> %b, <3 x i5> %x, <3 x i5> %c = call <3 x i5> @llvm.cttz.v3i5(<3 x i5> %s, i1 false) ret <3 x i5> %c } define i32 @cttz_sel_const_true_false_extra_use(i1 %b) { ; CHECK-LABEL: @cttz_sel_const_true_false_extra_use( ; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 5, i32 -8 ; CHECK-NEXT: call void @use(i32 [[S]]) ; CHECK-NEXT: [[C:%.*]] = call range(i32 0, 33) i32 @llvm.cttz.i32(i32 [[S]], i1 true) ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 5, i32 -8 call void @use(i32 %s) %c = call i32 @llvm.cttz.i32(i32 %s, i1 true) ret i32 %c } define i32 @ctpop_sel_const_true_false(i1 %b) { ; CHECK-LABEL: @ctpop_sel_const_true_false( ; CHECK-NEXT: [[C:%.*]] = select i1 [[B:%.*]], i32 2, i32 30 ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 5, i32 -7 %c = call i32 @llvm.ctpop.i32(i32 %s) ret i32 %c } define i32 @ctpop_sel_const_true(i1 %b, i32 %x) { ; CHECK-LABEL: @ctpop_sel_const_true( ; CHECK-NEXT: [[TMP1:%.*]] = call range(i32 0, 33) i32 @llvm.ctpop.i32(i32 [[X:%.*]]) ; CHECK-NEXT: [[C:%.*]] = select i1 [[B:%.*]], i32 2, i32 [[TMP1]] ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 5, i32 %x %c = call i32 @llvm.ctpop.i32(i32 %s) ret i32 %c } define <3 x i7> @ctpop_sel_const_false(<3 x i1> %b, <3 x i7> %x) { ; CHECK-LABEL: @ctpop_sel_const_false( ; CHECK-NEXT: [[TMP1:%.*]] = call range(i7 0, 8) <3 x i7> @llvm.ctpop.v3i7(<3 x i7> [[X:%.*]]) ; CHECK-NEXT: [[C:%.*]] = select <3 x i1> [[B:%.*]], <3 x i7> [[TMP1]], <3 x i7> ; CHECK-NEXT: ret <3 x i7> [[C]] ; %s = select <3 x i1> %b, <3 x i7> %x, <3 x i7> %c = call <3 x i7> @llvm.ctpop.v3i7(<3 x i7> %s) ret <3 x i7> %c } define i32 @ctpop_sel_const_true_false_extra_use(i1 %b) { ; CHECK-LABEL: @ctpop_sel_const_true_false_extra_use( ; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 5, i32 7 ; CHECK-NEXT: call void @use(i32 [[S]]) ; CHECK-NEXT: [[C:%.*]] = call range(i32 2, 4) i32 @llvm.ctpop.i32(i32 [[S]]) ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 5, i32 7 call void @use(i32 %s) %c = call i32 @llvm.ctpop.i32(i32 %s) ret i32 %c } define i32 @usub_sat_rhs_const_select_all_const(i1 %b) { ; CHECK-LABEL: @usub_sat_rhs_const_select_all_const( ; CHECK-NEXT: [[C:%.*]] = select i1 [[B:%.*]], i32 0, i32 3 ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 5, i32 10 %c = call i32 @llvm.usub.sat.i32(i32 %s, i32 7) ret i32 %c } define i32 @usub_sat_rhs_var_select_all_const(i1 %b, i32 %x) { ; CHECK-LABEL: @usub_sat_rhs_var_select_all_const( ; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 5, i32 10 ; CHECK-NEXT: [[C:%.*]] = call i32 @llvm.usub.sat.i32(i32 [[S]], i32 [[X:%.*]]) ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 5, i32 10 %c = call i32 @llvm.usub.sat.i32(i32 %s, i32 %x) ret i32 %c } define i32 @usub_sat_rhs_const_select_one_const(i1 %b, i32 %x) { ; CHECK-LABEL: @usub_sat_rhs_const_select_one_const( ; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.usub.sat.i32(i32 [[X:%.*]], i32 7) ; CHECK-NEXT: [[C:%.*]] = select i1 [[B:%.*]], i32 0, i32 [[TMP1]] ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 5, i32 %x %c = call i32 @llvm.usub.sat.i32(i32 %s, i32 7) ret i32 %c } define i32 @usub_sat_rhs_const_select_no_const(i1 %b, i32 %x, i32 %y) { ; CHECK-LABEL: @usub_sat_rhs_const_select_no_const( ; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], i32 [[Y:%.*]], i32 [[X:%.*]] ; CHECK-NEXT: [[C:%.*]] = call i32 @llvm.usub.sat.i32(i32 [[S]], i32 7) ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 %y, i32 %x %c = call i32 @llvm.usub.sat.i32(i32 %s, i32 7) ret i32 %c } define i32 @usub_sat_lhs_const_select_all_const(i1 %b) { ; CHECK-LABEL: @usub_sat_lhs_const_select_all_const( ; CHECK-NEXT: [[C:%.*]] = select i1 [[B:%.*]], i32 2, i32 0 ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, i32 5, i32 10 %c = call i32 @llvm.usub.sat.i32(i32 7, i32 %s) ret i32 %c } @g1 = constant <2 x i32> zeroinitializer @g2 = external global i8 declare <2 x i32> @llvm.masked.load.v2i32.p0(ptr, i32, <2 x i1>, <2 x i32>) define <2 x i32> @non_speculatable(i1 %b) { ; CHECK-LABEL: @non_speculatable( ; CHECK-NEXT: [[S:%.*]] = select i1 [[B:%.*]], ptr @g1, ptr @g2 ; CHECK-NEXT: [[C:%.*]] = call <2 x i32> @llvm.masked.load.v2i32.p0(ptr nonnull align 64 [[S]], <2 x i1> , <2 x i32> poison) ; CHECK-NEXT: ret <2 x i32> [[C]] ; %s = select i1 %b, ptr @g1, ptr @g2 %c = call <2 x i32> @llvm.masked.load.v2i32.p0(ptr %s, i32 64, <2 x i1> , <2 x i32> poison) ret <2 x i32> %c } declare i32 @llvm.vector.reduce.add.v2i32(<2 x i32>) define i32 @vec_to_scalar_select_scalar(i1 %b) { ; CHECK-LABEL: @vec_to_scalar_select_scalar( ; CHECK-NEXT: [[C:%.*]] = select i1 [[B:%.*]], i32 3, i32 7 ; CHECK-NEXT: ret i32 [[C]] ; %s = select i1 %b, <2 x i32> , <2 x i32> %c = call i32 @llvm.vector.reduce.add.v2i32(<2 x i32> %s) ret i32 %c } define i32 @vec_to_scalar_select_vector(<2 x i1> %b) { ; CHECK-LABEL: @vec_to_scalar_select_vector( ; CHECK-NEXT: [[S:%.*]] = select <2 x i1> [[B:%.*]], <2 x i32> , <2 x i32> ; CHECK-NEXT: [[C:%.*]] = call i32 @llvm.vector.reduce.add.v2i32(<2 x i32> [[S]]) ; CHECK-NEXT: ret i32 [[C]] ; %s = select <2 x i1> %b, <2 x i32> , <2 x i32> %c = call i32 @llvm.vector.reduce.add.v2i32(<2 x i32> %s) ret i32 %c } define i8 @test_drop_noundef(i1 %cond, i8 %val) { ; CHECK-LABEL: @test_drop_noundef( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[TMP0:%.*]] = call i8 @llvm.smin.i8(i8 [[VAL:%.*]], i8 0) ; CHECK-NEXT: [[RET:%.*]] = select i1 [[COND:%.*]], i8 -1, i8 [[TMP0]] ; CHECK-NEXT: ret i8 [[RET]] ; entry: %sel = select i1 %cond, i8 -1, i8 %val %ret = call noundef i8 @llvm.smin.i8(i8 %sel, i8 0) ret i8 %ret } define i1 @pr85536(i32 %a) { ; CHECK-LABEL: @pr85536( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i32 [[A:%.*]], 31 ; CHECK-NEXT: [[SHL1:%.*]] = shl nsw i32 -1, [[A]] ; CHECK-NEXT: [[ZEXT:%.*]] = zext i32 [[SHL1]] to i64 ; CHECK-NEXT: [[SHL2:%.*]] = shl i64 [[ZEXT]], 48 ; CHECK-NEXT: [[SHR:%.*]] = ashr exact i64 [[SHL2]], 48 ; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.smin.i64(i64 [[SHR]], i64 0) ; CHECK-NEXT: [[TMP1:%.*]] = and i64 [[TMP0]], 65535 ; CHECK-NEXT: [[RET1:%.*]] = icmp eq i64 [[TMP1]], 0 ; CHECK-NEXT: [[RET:%.*]] = select i1 [[CMP1]], i1 [[RET1]], i1 false ; CHECK-NEXT: ret i1 [[RET]] ; entry: %cmp1 = icmp ugt i32 %a, 30 %shl1 = shl nsw i32 -1, %a %zext = zext i32 %shl1 to i64 %shl2 = shl i64 %zext, 48 %shr = ashr exact i64 %shl2, 48 %sel = select i1 %cmp1, i64 -1, i64 %shr %smin = call noundef i64 @llvm.smin.i64(i64 %sel, i64 0) %masked = and i64 %smin, 65535 %ret = icmp eq i64 %masked, 0 ret i1 %ret } define double @test_fabs_select1(double %a) { ; CHECK-LABEL: @test_fabs_select1( ; CHECK-NEXT: [[COND:%.*]] = fcmp uno double [[A:%.*]], 0.000000e+00 ; CHECK-NEXT: [[SEL1:%.*]] = select i1 [[COND]], double +qnan, double [[A]] ; CHECK-NEXT: ret double [[SEL1]] ; %cond = fcmp uno double %a, 0.000000e+00 %sel1 = select i1 %cond, double 0x7FF8000000000000, double %a %fabs = call double @llvm.fabs.f64(double %sel1) %sel2 = select i1 %cond, double %fabs, double %a ret double %sel2 } define <2 x double> @test_fabs_select1_vec(<2 x double> %a) { ; CHECK-LABEL: @test_fabs_select1_vec( ; CHECK-NEXT: [[COND:%.*]] = fcmp uno <2 x double> [[A:%.*]], zeroinitializer ; CHECK-NEXT: [[SEL2:%.*]] = select <2 x i1> [[COND]], <2 x double> splat (double +qnan), <2 x double> [[A]] ; CHECK-NEXT: ret <2 x double> [[SEL2]] ; %cond = fcmp uno <2 x double> %a, zeroinitializer %sel1 = select <2 x i1> %cond, <2 x double> splat(double 0x7FF8000000000000), <2 x double> %a %fabs = call <2 x double> @llvm.fabs.v2f64(<2 x double> %sel1) %sel2 = select <2 x i1> %cond, <2 x double> %fabs, <2 x double> %a ret <2 x double> %sel2 } define double @test_fabs_select2(double %a) { ; CHECK-LABEL: @test_fabs_select2( ; CHECK-NEXT: [[ABS1:%.*]] = call double @llvm.fabs.f64(double [[A:%.*]]) ; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq double [[ABS1]], +inf ; CHECK-NEXT: [[ABS2:%.*]] = select i1 [[CMP]], double 0.000000e+00, double [[ABS1]] ; CHECK-NEXT: ret double [[ABS2]] ; %abs1 = call double @llvm.fabs.f64(double %a) %cmp = fcmp oeq double %abs1, 0x7FF0000000000000 %sel = select i1 %cmp, double -0.000000e+00, double %abs1 %abs2 = call double @llvm.fabs.f64(double %sel) ret double %abs2 } ; nsz flag should be dropped. define double @test_fabs_select_fmf1(i1 %cond, double %a) { ; CHECK-LABEL: @test_fabs_select_fmf1( ; CHECK-NEXT: [[A:%.*]] = call double @llvm.fabs.f64(double [[A1:%.*]]) ; CHECK-NEXT: [[FABS:%.*]] = select nnan ninf i1 [[COND:%.*]], double 0.000000e+00, double [[A]] ; CHECK-NEXT: ret double [[FABS]] ; %sel1 = select nnan ninf nsz i1 %cond, double 0.0, double %a %fabs = call double @llvm.fabs.f64(double %sel1) ret double %fabs } define double @test_fabs_select_fmf2(i1 %cond, double %a) { ; CHECK-LABEL: @test_fabs_select_fmf2( ; CHECK-NEXT: [[TMP1:%.*]] = call double @llvm.fabs.f64(double [[A:%.*]]) ; CHECK-NEXT: [[SEL1:%.*]] = select nnan ninf i1 [[COND:%.*]], double 0.000000e+00, double [[TMP1]] ; CHECK-NEXT: ret double [[SEL1]] ; %sel1 = select i1 %cond, double 0.0, double %a %fabs = call nnan ninf nsz double @llvm.fabs.f64(double %sel1) ret double %fabs } define float @test_fabs_select_multiuse(i1 %cond, float %x) { ; CHECK-LABEL: @test_fabs_select_multiuse( ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND:%.*]], float [[X:%.*]], float +inf ; CHECK-NEXT: call void @usef32(float [[SELECT]]) ; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[SELECT]]) ; CHECK-NEXT: ret float [[FABS]] ; %select = select i1 %cond, float %x, float 0x7FF0000000000000 call void @usef32(float %select) %fabs = call float @llvm.fabs.f32(float %select) ret float %fabs } define float @test_fabs_select_multiuse_both_constant(i1 %cond, float %x) { ; CHECK-LABEL: @test_fabs_select_multiuse_both_constant( ; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[COND:%.*]], float -1.000000e+00, float -2.000000e+00 ; CHECK-NEXT: call void @usef32(float [[SELECT]]) ; CHECK-NEXT: [[FABS:%.*]] = select i1 [[COND]], float 1.000000e+00, float 2.000000e+00 ; CHECK-NEXT: ret float [[FABS]] ; %select = select i1 %cond, float -1.0, float -2.0 call void @usef32(float %select) %fabs = call float @llvm.fabs.f32(float %select) ret float %fabs } ; Negative test: Don't replace with select between vector mask and zeroinitializer. define <16 x i1> @test_select_of_active_lane_mask_bound(i64 %base, i64 %n, i1 %cond) { ; CHECK-LABEL: @test_select_of_active_lane_mask_bound( ; CHECK-NEXT: [[S:%.*]] = select i1 [[COND:%.*]], i64 [[N:%.*]], i64 0 ; CHECK-NEXT: [[MASK:%.*]] = call <16 x i1> @llvm.get.active.lane.mask.v16i1.i64(i64 [[BASE:%.*]], i64 [[S]]) ; CHECK-NEXT: ret <16 x i1> [[MASK]] ; %s = select i1 %cond, i64 %n, i64 0 %mask = call <16 x i1> @llvm.get.active.lane.mask.v16i1.i64(i64 %base, i64 %s) ret <16 x i1> %mask } define <16 x i1> @test_select_of_active_lane_mask_bound_both_constant(i64 %base, i64 %n, i1 %cond) { ; CHECK-LABEL: @test_select_of_active_lane_mask_bound_both_constant( ; CHECK-NEXT: [[MASK:%.*]] = select i1 [[COND:%.*]], <16 x i1> splat (i1 true), <16 x i1> zeroinitializer ; CHECK-NEXT: ret <16 x i1> [[MASK]] ; %s = select i1 %cond, i64 16, i64 0 %mask = call <16 x i1> @llvm.get.active.lane.mask.v16i1.i64(i64 0, i64 %s) ret <16 x i1> %mask } define { i64, i1 } @test_select_of_overflow_intrinsic_operand(i64 %n, i1 %cond) { ; CHECK-LABEL: @test_select_of_overflow_intrinsic_operand( ; CHECK-NEXT: [[TMP1:%.*]] = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 [[N:%.*]], i64 42) ; CHECK-NEXT: [[ADD_OVERFLOW:%.*]] = select i1 [[COND:%.*]], { i64, i1 } [[TMP1]], { i64, i1 } { i64 42, i1 false } ; CHECK-NEXT: ret { i64, i1 } [[ADD_OVERFLOW]] ; %s = select i1 %cond, i64 %n, i64 0 %add_overflow = call { i64, i1 } @llvm.uadd.with.overflow.i64(i64 %s, i64 42) ret { i64, i1 } %add_overflow } ; Negative test: Can't fold struct-return into vector select. define { <4 x float>, <4 x float> } @test_vector_cond_select_of_sincos_intrinsic_operand(<4 x float> %v, <4 x i1> %cond) { ; CHECK-LABEL: @test_vector_cond_select_of_sincos_intrinsic_operand( ; CHECK-NEXT: [[S:%.*]] = select <4 x i1> [[COND:%.*]], <4 x float> [[V:%.*]], <4 x float> zeroinitializer ; CHECK-NEXT: [[RESULT:%.*]] = call { <4 x float>, <4 x float> } @llvm.sincos.v4f32(<4 x float> [[S]]) ; CHECK-NEXT: ret { <4 x float>, <4 x float> } [[RESULT]] ; %s = select <4 x i1> %cond, <4 x float> %v, <4 x float> zeroinitializer %result = call { <4 x float>, <4 x float> } @llvm.sincos.v4f32(<4 x float> %s) ret { <4 x float>, <4 x float> } %result } define { <4 x float>, <4 x float> } @test_select_of_sincos_intrinsic_operand(<4 x float> %v, i1 %cond) { ; CHECK-LABEL: @test_select_of_sincos_intrinsic_operand( ; CHECK-NEXT: [[RESULT:%.*]] = call { <4 x float>, <4 x float> } @llvm.sincos.v4f32(<4 x float> [[S:%.*]]) ; CHECK-NEXT: [[RESULT1:%.*]] = select i1 [[COND:%.*]], { <4 x float>, <4 x float> } [[RESULT]], { <4 x float>, <4 x float> } { <4 x float> zeroinitializer, <4 x float> splat (float 1.000000e+00) } ; CHECK-NEXT: ret { <4 x float>, <4 x float> } [[RESULT1]] ; %s = select i1 %cond, <4 x float> %v, <4 x float> zeroinitializer %result = call { <4 x float>, <4 x float> } @llvm.sincos.v4f32(<4 x float> %s) ret { <4 x float>, <4 x float> } %result } define i8 @test_select_rotate_left(i1 %0) { ; CHECK-LABEL: @test_select_rotate_left( ; CHECK-NEXT: [[RET:%.*]] = select i1 [[TMP0:%.*]], i8 2, i8 -1 ; CHECK-NEXT: ret i8 [[RET]] ; %s = select i1 %0, i8 1, i8 -1 %ret = call i8 @llvm.fshl.i8(i8 %s, i8 %s, i8 1) ret i8 %ret } define i8 @test_select_rotate_left_multiuser(i1 %0) { ; CHECK-LABEL: @test_select_rotate_left_multiuser( ; CHECK-NEXT: [[S:%.*]] = select i1 [[TMP0:%.*]], i8 1, i8 -1 ; CHECK-NEXT: [[RET:%.*]] = call i8 @llvm.fshl.i8(i8 [[S]], i8 [[S]], i8 1) ; CHECK-NEXT: call void @use(i8 [[S]]) ; CHECK-NEXT: ret i8 [[RET]] ; %s = select i1 %0, i8 1, i8 -1 %ret = call i8 @llvm.fshl.i8(i8 %s, i8 %s, i8 1) call void @use(i8 %s) ret i8 %ret } define <2 x i8> @test_select_rotate_left_splat(i1 %0) { ; CHECK-LABEL: @test_select_rotate_left_splat( ; CHECK-NEXT: [[RET:%.*]] = select i1 [[TMP0:%.*]], <2 x i8> splat (i8 2), <2 x i8> splat (i8 -1) ; CHECK-NEXT: ret <2 x i8> [[RET]] ; %s = select i1 %0, <2 x i8> , <2 x i8> %ret = call <2 x i8> @llvm.fshl.v2i8(<2 x i8> %s, <2 x i8> %s, <2 x i8> ) ret <2 x i8> %ret } define <2 x i8> @test_select_rotate_left_splat_poison(i1 %0) { ; CHECK-LABEL: @test_select_rotate_left_splat_poison( ; CHECK-NEXT: [[RET:%.*]] = select i1 [[TMP0:%.*]], <2 x i8> , <2 x i8> splat (i8 -1) ; CHECK-NEXT: ret <2 x i8> [[RET]] ; %s = select i1 %0, <2 x i8> , <2 x i8> %ret = call <2 x i8> @llvm.fshl.v2i8(<2 x i8> %s, <2 x i8> %s, <2 x i8> ) ret <2 x i8> %ret } define <2 x i8> @test_select_rotate_left_non_splat(i1 %0) { ; CHECK-LABEL: @test_select_rotate_left_non_splat( ; CHECK-NEXT: [[RET:%.*]] = select i1 [[TMP0:%.*]], <2 x i8> , <2 x i8> ; CHECK-NEXT: ret <2 x i8> [[RET]] ; %s = select i1 %0, <2 x i8> , <2 x i8> %ret = call <2 x i8> @llvm.fshl.v2i8(<2 x i8> %s, <2 x i8> %s, <2 x i8> ) ret <2 x i8> %ret } define i8 @test_select_rotate_right(i1 %0) { ; CHECK-LABEL: @test_select_rotate_right( ; CHECK-NEXT: [[RET:%.*]] = select i1 [[TMP0:%.*]], i8 2, i8 -1 ; CHECK-NEXT: ret i8 [[RET]] ; %s = select i1 %0, i8 1, i8 -1 %ret = call i8 @llvm.fshr.i8(i8 %s, i8 %s, i8 7) ret i8 %ret } define i8 @test_select_rotate_right_multiuser(i1 %0) { ; CHECK-LABEL: @test_select_rotate_right_multiuser( ; CHECK-NEXT: [[S:%.*]] = select i1 [[TMP0:%.*]], i8 1, i8 -1 ; CHECK-NEXT: [[RET:%.*]] = call i8 @llvm.fshl.i8(i8 [[S]], i8 [[S]], i8 1) ; CHECK-NEXT: call void @use(i8 [[S]]) ; CHECK-NEXT: ret i8 [[RET]] ; %s = select i1 %0, i8 1, i8 -1 %ret = call i8 @llvm.fshr.i8(i8 %s, i8 %s, i8 7) call void @use(i8 %s) ret i8 %ret } define <2 x i8> @test_select_rotate_right_splat(i1 %0) { ; CHECK-LABEL: @test_select_rotate_right_splat( ; CHECK-NEXT: [[RET:%.*]] = select i1 [[TMP0:%.*]], <2 x i8> splat (i8 2), <2 x i8> splat (i8 -1) ; CHECK-NEXT: ret <2 x i8> [[RET]] ; %s = select i1 %0, <2 x i8> , <2 x i8> %ret = call <2 x i8> @llvm.fshr.v2i8(<2 x i8> %s, <2 x i8> %s, <2 x i8> ) ret <2 x i8> %ret } define <2 x i8> @test_select_rotate_right_splat_poison(i1 %0) { ; CHECK-LABEL: @test_select_rotate_right_splat_poison( ; CHECK-NEXT: [[RET:%.*]] = select i1 [[TMP0:%.*]], <2 x i8> , <2 x i8> splat (i8 -1) ; CHECK-NEXT: ret <2 x i8> [[RET]] ; %s = select i1 %0, <2 x i8> , <2 x i8> %ret = call <2 x i8> @llvm.fshr.v2i8(<2 x i8> %s, <2 x i8> %s, <2 x i8> ) ret <2 x i8> %ret } define <2 x i8> @test_select_rotate_right_non_splat(i1 %0) { ; CHECK-LABEL: @test_select_rotate_right_non_splat( ; CHECK-NEXT: [[RET:%.*]] = select i1 [[TMP0:%.*]], <2 x i8> , <2 x i8> ; CHECK-NEXT: ret <2 x i8> [[RET]] ; %s = select i1 %0, <2 x i8> , <2 x i8> %ret = call <2 x i8> @llvm.fshr.v2i8(<2 x i8> %s, <2 x i8> %s, <2 x i8> ) ret <2 x i8> %ret } define i32 @select_of_ctpop(i1 %cond, i32 %x, i32 %y) { ; CHECK-LABEL: @select_of_ctpop( ; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[COND:%.*]], i32 [[X:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: [[SEL:%.*]] = call range(i32 0, 33) i32 @llvm.ctpop.i32(i32 [[TMP1]]) ; CHECK-NEXT: ret i32 [[SEL]] ; %ctpop1 = call i32 @llvm.ctpop.i32(i32 %x) %ctpop2 = call i32 @llvm.ctpop.i32(i32 %y) %sel = select i1 %cond, i32 %ctpop1, i32 %ctpop2 ret i32 %sel } ; Negative test: TV is not ctpop, should not transform define i32 @select_of_ctpop_negative_tv(i1 %cond, i32 %x, i32 %y) { ; CHECK-LABEL: @select_of_ctpop_negative_tv( ; CHECK-NEXT: [[CTPOP2:%.*]] = call range(i32 0, 33) i32 @llvm.ctpop.i32(i32 [[Y:%.*]]) ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i32 [[X:%.*]], i32 [[CTPOP2]] ; CHECK-NEXT: ret i32 [[SEL]] ; %ctpop1 = add i32 %x, 0 %ctpop2 = call i32 @llvm.ctpop.i32(i32 %y) %sel = select i1 %cond, i32 %ctpop1, i32 %ctpop2 ret i32 %sel } ; Negative test: FV is not ctpop, should not transform define i32 @select_of_ctpop_negative_fv(i1 %cond, i32 %x, i32 %y) { ; CHECK-LABEL: @select_of_ctpop_negative_fv( ; CHECK-NEXT: [[CTPOP1:%.*]] = call range(i32 0, 33) i32 @llvm.ctpop.i32(i32 [[Y:%.*]]) ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i32 [[CTPOP1]], i32 [[X:%.*]] ; CHECK-NEXT: ret i32 [[SEL]] ; %ctpop1 = call i32 @llvm.ctpop.i32(i32 %y) %ctpop2 = add i32 %x, 0 %sel = select i1 %cond, i32 %ctpop1, i32 %ctpop2 ret i32 %sel } ; Negative test: ctpop1 has multiple uses, don't transform define i32 @select_of_ctpop_negative_multi_use(i1 %cond, i32 %x, i32 %y) { ; CHECK-LABEL: @select_of_ctpop_negative_multi_use( ; CHECK-NEXT: [[CTPOP1:%.*]] = call range(i32 0, 33) i32 @llvm.ctpop.i32(i32 [[X:%.*]]) ; CHECK-NEXT: call void @use(i32 [[CTPOP1]]) ; CHECK-NEXT: [[CTPOP2:%.*]] = call range(i32 0, 33) i32 @llvm.ctpop.i32(i32 [[Y:%.*]]) ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i32 [[CTPOP1]], i32 [[CTPOP2]] ; CHECK-NEXT: ret i32 [[SEL]] ; %ctpop1 = call i32 @llvm.ctpop.i32(i32 %x) call void @use(i32 %ctpop1) %ctpop2 = call i32 @llvm.ctpop.i32(i32 %y) %sel = select i1 %cond, i32 %ctpop1, i32 %ctpop2 ret i32 %sel } define <4 x i32> @select_of_ctpop_vec(<4 x i1> %cond, <4 x i32> %x, <4 x i32> %y) { ; CHECK-LABEL: @select_of_ctpop_vec( ; CHECK-NEXT: [[TMP1:%.*]] = select <4 x i1> [[COND:%.*]], <4 x i32> [[X:%.*]], <4 x i32> [[Y:%.*]] ; CHECK-NEXT: [[SEL:%.*]] = call range(i32 0, 33) <4 x i32> @llvm.ctpop.v4i32(<4 x i32> [[TMP1]]) ; CHECK-NEXT: ret <4 x i32> [[SEL]] ; %ctpop1 = call <4 x i32> @llvm.ctpop.v4i32(<4 x i32> %x) %ctpop2 = call <4 x i32> @llvm.ctpop.v4i32(<4 x i32> %y) %sel = select <4 x i1> %cond, <4 x i32> %ctpop1, <4 x i32> %ctpop2 ret <4 x i32> %sel } define i32 @select_of_ctlz(i1 %cond, i32 %x, i32 %y) { ; CHECK-LABEL: @select_of_ctlz( ; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[COND:%.*]], i32 [[X:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: [[SEL:%.*]] = call range(i32 0, 33) i32 @llvm.ctlz.i32(i32 [[TMP1]], i1 false) ; CHECK-NEXT: ret i32 [[SEL]] ; %ctlz1 = call i32 @llvm.ctlz.i32(i32 %x, i1 false) %ctlz2 = call i32 @llvm.ctlz.i32(i32 %y, i1 false) %sel = select i1 %cond, i32 %ctlz1, i32 %ctlz2 ret i32 %sel } define i32 @select_of_ctlz_zero_poison_false(i1 %cond, i32 %x, i32 %y) { ; CHECK-LABEL: @select_of_ctlz_zero_poison_false( ; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[COND:%.*]], i32 [[X:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: [[SEL:%.*]] = call range(i32 0, 33) i32 @llvm.ctlz.i32(i32 [[TMP1]], i1 false) ; CHECK-NEXT: ret i32 [[SEL]] ; %ctlz1 = call i32 @llvm.ctlz.i32(i32 %x, i1 false) %ctlz2 = call i32 @llvm.ctlz.i32(i32 %y, i1 true) %sel = select i1 %cond, i32 %ctlz1, i32 %ctlz2 ret i32 %sel } define i32 @select_of_ctlz_zero_poison_true(i1 %cond, i32 %x, i32 %y) { ; CHECK-LABEL: @select_of_ctlz_zero_poison_true( ; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[COND:%.*]], i32 [[X:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: [[SEL:%.*]] = call range(i32 0, 33) i32 @llvm.ctlz.i32(i32 [[TMP1]], i1 true) ; CHECK-NEXT: ret i32 [[SEL]] ; %ctlz1 = call i32 @llvm.ctlz.i32(i32 %x, i1 true) %ctlz2 = call i32 @llvm.ctlz.i32(i32 %y, i1 true) %sel = select i1 %cond, i32 %ctlz1, i32 %ctlz2 ret i32 %sel } ; Negative test: ctlz1 has multiple uses, don't transform define i32 @select_of_ctlz_negative_multi_use(i1 %cond, i32 %x, i32 %y) { ; CHECK-LABEL: @select_of_ctlz_negative_multi_use( ; CHECK-NEXT: [[CTLZ1:%.*]] = call range(i32 0, 33) i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false) ; CHECK-NEXT: call void @use(i32 [[CTLZ1]]) ; CHECK-NEXT: [[CTLZ2:%.*]] = call range(i32 0, 33) i32 @llvm.ctlz.i32(i32 [[Y:%.*]], i1 false) ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i32 [[CTLZ1]], i32 [[CTLZ2]] ; CHECK-NEXT: ret i32 [[SEL]] ; %ctlz1 = call i32 @llvm.ctlz.i32(i32 %x, i1 false) call void @use(i32 %ctlz1) %ctlz2 = call i32 @llvm.ctlz.i32(i32 %y, i1 false) %sel = select i1 %cond, i32 %ctlz1, i32 %ctlz2 ret i32 %sel } define <4 x i32> @select_of_ctlz_vec(<4 x i1> %cond, <4 x i32> %x, <4 x i32> %y) { ; CHECK-LABEL: @select_of_ctlz_vec( ; CHECK-NEXT: [[CTLZ2:%.*]] = call range(i32 0, 33) <4 x i32> @llvm.ctlz.v4i32(<4 x i32> [[Y:%.*]], i1 false) ; CHECK-NEXT: ret <4 x i32> [[CTLZ2]] ; %ctlz1 = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %x, i1 false) %ctlz2 = call <4 x i32> @llvm.ctlz.v4i32(<4 x i32> %y, i1 false) %sel = select <4 x i1> %cond, <4 x i32> %ctlz2, <4 x i32> %ctlz2 ret <4 x i32> %sel } define i32 @select_of_cttz(i1 %cond, i32 %x, i32 %y) { ; CHECK-LABEL: @select_of_cttz( ; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[COND:%.*]], i32 [[X:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: [[SEL:%.*]] = call range(i32 0, 33) i32 @llvm.cttz.i32(i32 [[TMP1]], i1 false) ; CHECK-NEXT: ret i32 [[SEL]] ; %cttz1 = call i32 @llvm.cttz.i32(i32 %x, i1 false) %cttz2 = call i32 @llvm.cttz.i32(i32 %y, i1 false) %sel = select i1 %cond, i32 %cttz1, i32 %cttz2 ret i32 %sel } define i32 @select_of_abs(i1 %cond, i32 %x, i32 %y) { ; CHECK-LABEL: @select_of_abs( ; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[COND:%.*]], i32 [[X:%.*]], i32 [[Y:%.*]] ; CHECK-NEXT: [[SEL:%.*]] = call i32 @llvm.abs.i32(i32 [[TMP1]], i1 false) ; CHECK-NEXT: ret i32 [[SEL]] ; %abs1 = call i32 @llvm.abs.i32(i32 %x, i1 false) %abs2 = call i32 @llvm.abs.i32(i32 %y, i1 false) %sel = select i1 %cond, i32 %abs1, i32 %abs2 ret i32 %sel }