1 // RUN: %clang_cc1 -triple=x86_64 -std=c2y -Wall -pedantic -Wno-unused -Wpre-c2y-compat -verify=pre-c2y %s -emit-llvm -o - | FileCheck %s 2 // RUN: %clang_cc1 -triple=x86_64 -std=c23 -Wall -pedantic -Wno-unused %s -verify -emit-llvm -o - | FileCheck %s 3 4 /* WG14 N3259: Yes 5 * Support ++ and -- on complex values 6 */ 7 8 // CHECK-LABEL: define {{.*}} void @test() 9 void test() { 10 // CHECK: %[[F:.+]] = alloca { float, float } 11 // CHECK: store float 1 12 // CHECK: store float 0 13 _Complex float f = __builtin_complex(1.0f, 0.0f); 14 15 // CHECK: %[[F_REALP1:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 0 16 // CHECK-NEXT: %[[F_REAL:.+]] = load float, ptr %[[F_REALP1]] 17 // CHECK-NEXT: %[[F_IMAGP2:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 1 18 // CHECK-NEXT: %[[F_IMAG:.+]] = load float, ptr %[[F_IMAGP2]] 19 // CHECK-NEXT: %[[INC:.+]] = fadd float %[[F_REAL]], 1.000000e+00 20 // CHECK-NEXT: %[[F_REALP3:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 0 21 // CHECK-NEXT: %[[F_IMAGP4:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 1 22 // CHECK-NEXT: store float %[[INC]], ptr %[[F_REALP3]] 23 // CHECK-NEXT: store float %[[F_IMAG]], ptr %[[F_IMAGP4]] 24 f++; /* expected-warning {{'++' on an object of complex type is a C2y extension}} 25 pre-c2y-warning {{'++' on an object of complex type is incompatible with C standards before C2y}} 26 */ 27 28 // CHECK: %[[F_REALP5:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 0 29 // CHECK-NEXT: %[[F_REAL6:.+]] = load float, ptr %[[F_REALP5]] 30 // CHECK-NEXT: %[[F_IMAGP7:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 1 31 // CHECK-NEXT: %[[F_IMAG8:.+]] = load float, ptr %[[F_IMAGP7]] 32 // CHECK-NEXT: %[[INC9:.+]] = fadd float %[[F_REAL6]], 1.000000e+00 33 // CHECK-NEXT: %[[F_REALP10:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 0 34 // CHECK-NEXT: %[[F_IMAGP11:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 1 35 // CHECK-NEXT: store float %[[INC9]], ptr %[[F_REALP10]] 36 // CHECK-NEXT: store float %[[F_IMAG8]], ptr %[[F_IMAGP11]] 37 ++f; /* expected-warning {{'++' on an object of complex type is a C2y extension}} 38 pre-c2y-warning {{'++' on an object of complex type is incompatible with C standards before C2y}} 39 */ 40 41 // CHECK: %[[F_REALP12:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 0 42 // CHECK-NEXT: %[[F_REAL13:.+]] = load float, ptr %[[F_REALP12]] 43 // CHECK-NEXT: %[[F_IMAGP14:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 1 44 // CHECK-NEXT: %[[F_IMAG15:.+]] = load float, ptr %[[F_IMAGP14]] 45 // CHECK-NEXT: %[[DEC:.+]] = fadd float %[[F_REAL13]], -1.000000e+00 46 // CHECK-NEXT: %[[F_REALP16:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 0 47 // CHECK-NEXT: %[[F_IMAGP17:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 1 48 // CHECK-NEXT: store float %[[DEC]], ptr %[[F_REALP16]] 49 // CHECK-NEXT: store float %[[F_IMAG15]], ptr %[[F_IMAGP17]] 50 f--; /* expected-warning {{'--' on an object of complex type is a C2y extension}} 51 pre-c2y-warning {{'--' on an object of complex type is incompatible with C standards before C2y}} 52 */ 53 54 // CHECK: %[[F_REALP18:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 0 55 // CHECK-NEXT: %[[F_REAL19:.+]] = load float, ptr %[[F_REALP18]] 56 // CHECK-NEXT: %[[F_IMAGP20:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 1 57 // CHECK-NEXT: %[[F_IMAG21:.+]] = load float, ptr %[[F_IMAGP20]] 58 // CHECK-NEXT: %[[DEC22:.+]] = fadd float %[[F_REAL19]], -1.000000e+00 59 // CHECK-NEXT: %[[F_REALP23:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 0 60 // CHECK-NEXT: %[[F_IMAGP24:.+]] = getelementptr inbounds nuw { float, float }, ptr %[[F]], i32 0, i32 1 61 // CHECK-NEXT: store float %[[DEC22]], ptr %[[F_REALP23]] 62 // CHECK-NEXT: store float %[[F_IMAG21]], ptr %[[F_IMAGP24]] 63 --f; /* expected-warning {{'--' on an object of complex type is a C2y extension}} 64 pre-c2y-warning {{'--' on an object of complex type is incompatible with C standards before C2y}} 65 */ 66 } 67