Author: Aaron Ballman Date: 2024-07-02T09:08:44-04:00 New Revision: 1a422553f9ed05ee57463ed5554cfd7eeea46800
URL: https://github.com/llvm/llvm-project/commit/1a422553f9ed05ee57463ed5554cfd7eeea46800 DIFF: https://github.com/llvm/llvm-project/commit/1a422553f9ed05ee57463ed5554cfd7eeea46800.diff LOG: [C2y] Modify diagnostics for complex increment/decrement Clang implemented WG14 N3259 as an extension, now it's a feature of C2y. Added: clang/test/C/C2y/n3259.c Modified: clang/include/clang/Basic/DiagnosticSemaKinds.td clang/lib/Sema/SemaExpr.cpp Removed: ################################################################################ diff --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td b/clang/include/clang/Basic/DiagnosticSemaKinds.td index c852f1893fe14..3d3e98c7b751b 100644 --- a/clang/include/clang/Basic/DiagnosticSemaKinds.td +++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td @@ -7664,8 +7664,12 @@ def ext_gnu_ptr_func_arith : Extension< InGroup<GNUPointerArith>; def err_readonly_message_assignment : Error< "assigning to 'readonly' return result of an Objective-C message not allowed">; -def ext_increment_complex : Extension< - "'%select{--|++}0' on an object of complex type is a Clang extension">; +def ext_c2y_increment_complex : Extension< + "'%select{--|++}0' on an object of complex type is a C2y extension">, + InGroup<C2y>; +def warn_c2y_compat_increment_complex : Warning< + "'%select{--|++}0' on an object of complex type is incompatible with C " + "standards before C2y">, InGroup<CPre2yCompat>, DefaultIgnore; def ext_integer_complement_complex : Extension< "ISO C does not support '~' for complex conjugation of %0">; def err_nosetter_property_assignment : Error< diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp index cc811a40185ce..1437fa08d2e7a 100644 --- a/clang/lib/Sema/SemaExpr.cpp +++ b/clang/lib/Sema/SemaExpr.cpp @@ -13764,8 +13764,9 @@ static QualType CheckIncrementDecrementOperand(Sema &S, Expr *Op, return QualType(); } else if (ResType->isAnyComplexType()) { // C99 does not support ++/-- on complex types, we allow as an extension. - S.Diag(OpLoc, diag::ext_increment_complex) - << IsInc << Op->getSourceRange(); + S.Diag(OpLoc, S.getLangOpts().C2y ? diag::warn_c2y_compat_increment_complex + : diag::ext_c2y_increment_complex) + << IsInc << Op->getSourceRange(); } else if (ResType->isPlaceholderType()) { ExprResult PR = S.CheckPlaceholderExpr(Op); if (PR.isInvalid()) return QualType(); diff --git a/clang/test/C/C2y/n3259.c b/clang/test/C/C2y/n3259.c new file mode 100644 index 0000000000000..84118a76660c9 --- /dev/null +++ b/clang/test/C/C2y/n3259.c @@ -0,0 +1,66 @@ +// RUN: %clang_cc1 -std=c2y -Wall -pedantic -Wno-unused -Wpre-c2y-compat -verify=pre-c2y %s -emit-llvm -o - | FileCheck %s +// RUN: %clang_cc1 -std=c23 -Wall -pedantic -Wno-unused %s -verify -emit-llvm -o - | FileCheck %s + +/* WG14 N3259: Yes + * Support ++ and -- on complex values + */ + +// CHECK-LABEL: define {{.*}} void @test() +void test() { + // CHECK: %[[F:.+]] = alloca { float, float } + // CHECK: store float 1 + // CHECK: store float 0 + _Complex float f = __builtin_complex(1.0f, 0.0f); + + // CHECK: %[[F_REALP1:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 0 + // CHECK-NEXT: %[[F_REAL:.+]] = load float, ptr %[[F_REALP1]] + // CHECK-NEXT: %[[F_IMAGP2:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 1 + // CHECK-NEXT: %[[F_IMAG:.+]] = load float, ptr %[[F_IMAGP2]] + // CHECK-NEXT: %[[INC:.+]] = fadd float %[[F_REAL]], 1.000000e+00 + // CHECK-NEXT: %[[F_REALP3:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 0 + // CHECK-NEXT: %[[F_IMAGP4:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 1 + // CHECK-NEXT: store float %[[INC]], ptr %[[F_REALP3]] + // CHECK-NEXT: store float %[[F_IMAG]], ptr %[[F_IMAGP4]] + f++; /* expected-warning {{'++' on an object of complex type is a C2y extension}} + pre-c2y-warning {{'++' on an object of complex type is incompatible with C standards before C2y}} + */ + + // CHECK: %[[F_REALP5:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 0 + // CHECK-NEXT: %[[F_REAL6:.+]] = load float, ptr %[[F_REALP5]] + // CHECK-NEXT: %[[F_IMAGP7:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 1 + // CHECK-NEXT: %[[F_IMAG8:.+]] = load float, ptr %[[F_IMAGP7]] + // CHECK-NEXT: %[[INC9:.+]] = fadd float %[[F_REAL6]], 1.000000e+00 + // CHECK-NEXT: %[[F_REALP10:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 0 + // CHECK-NEXT: %[[F_IMAGP11:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 1 + // CHECK-NEXT: store float %[[INC9]], ptr %[[F_REALP10]] + // CHECK-NEXT: store float %[[F_IMAG8]], ptr %[[F_IMAGP11]] + ++f; /* expected-warning {{'++' on an object of complex type is a C2y extension}} + pre-c2y-warning {{'++' on an object of complex type is incompatible with C standards before C2y}} + */ + + // CHECK: %[[F_REALP12:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 0 + // CHECK-NEXT: %[[F_REAL13:.+]] = load float, ptr %[[F_REALP12]] + // CHECK-NEXT: %[[F_IMAGP14:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 1 + // CHECK-NEXT: %[[F_IMAG15:.+]] = load float, ptr %[[F_IMAGP14]] + // CHECK-NEXT: %[[DEC:.+]] = fadd float %[[F_REAL13]], -1.000000e+00 + // CHECK-NEXT: %[[F_REALP16:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 0 + // CHECK-NEXT: %[[F_IMAGP17:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 1 + // CHECK-NEXT: store float %[[DEC]], ptr %[[F_REALP16]] + // CHECK-NEXT: store float %[[F_IMAG15]], ptr %[[F_IMAGP17]] + f--; /* expected-warning {{'--' on an object of complex type is a C2y extension}} + pre-c2y-warning {{'--' on an object of complex type is incompatible with C standards before C2y}} + */ + + // CHECK: %[[F_REALP18:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 0 + // CHECK-NEXT: %[[F_REAL19:.+]] = load float, ptr %[[F_REALP18]] + // CHECK-NEXT: %[[F_IMAGP20:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 1 + // CHECK-NEXT: %[[F_IMAG21:.+]] = load float, ptr %[[F_IMAGP20]] + // CHECK-NEXT: %[[DEC22:.+]] = fadd float %[[F_REAL19]], -1.000000e+00 + // CHECK-NEXT: %[[F_REALP23:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 0 + // CHECK-NEXT: %[[F_IMAGP24:.+]] = getelementptr inbounds { float, float }, ptr %[[F]], i32 0, i32 1 + // CHECK-NEXT: store float %[[DEC22]], ptr %[[F_REALP23]] + // CHECK-NEXT: store float %[[F_IMAG21]], ptr %[[F_IMAGP24]] + --f; /* expected-warning {{'--' on an object of complex type is a C2y extension}} + pre-c2y-warning {{'--' on an object of complex type is incompatible with C standards before C2y}} + */ +} _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
