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[AIX] Implement AIX special alignment rule about double/long double Implement AIX default `power` alignment rule by adding `PreferredAlignment` and `PreferredNVAlignment` in ASTRecordLayout class. The patchh aims at returning correct value for `__alignof(x)` and `alignof(x)` under `power` alignment rules. Differential Revision: https://reviews.llvm.org/D79719
2020-06-02 23:51:58 +08:00
// RUN: %clang_cc1 -triple powerpc-ibm-aix-xcoff -Wpacked \
// RUN: -fdump-record-layouts -fsyntax-only -verify -x c++ < %s | \
// RUN: FileCheck %s
// RUN: %clang_cc1 -triple powerpc64-ibm-aix-xcoff -Wpacked \
// RUN: -fdump-record-layouts -fsyntax-only -verify -x c++ < %s | \
// RUN: FileCheck %s
struct A {
double d;
};
struct B {
char x[8];
};
struct [[gnu::packed]] C : B, A { // expected-warning{{packed attribute is unnecessary for 'C'}}
char x alignas(4)[8];
};
int b = sizeof(C);
// CHECK: 0 | struct C
// CHECK-NEXT: 0 | struct B (base)
Recommit: Compress formatting of array type names (int [4] -> int[4]) Based on post-commit review discussion on 2bd84938470bf2e337801faafb8a67710f46429d with Richard Smith. Other uses of forcing HasEmptyPlaceHolder to false seem OK to me - they're all around pointer/reference types where the pointer/reference token will appear at the rightmost side of the left side of the type name, so they make nested types (eg: the "int" in "int *") behave as though there is a non-empty placeholder (because the "*" is essentially the placeholder as far as the "int" is concerned). This was originally committed in 277623f4d5a672d707390e2c3eaf30a9eb4b075c Reverted in f9ad1d1c775a8e264bebc15d75e0c6e5c20eefc7 due to breakages outside of clang - lldb seems to have some strange/strong dependence on "char [N]" versus "char[N]" when printing strings (not due to that name appearing in DWARF, but probably due to using clang to stringify type names) that'll need to be addressed, plus a few other odds and ends in other subprojects (clang-tools-extra, compiler-rt, etc).
2021-10-15 05:52:47 +08:00
// CHECK-NEXT: 0 | char[8] x
[AIX] Implement AIX special alignment rule about double/long double Implement AIX default `power` alignment rule by adding `PreferredAlignment` and `PreferredNVAlignment` in ASTRecordLayout class. The patchh aims at returning correct value for `__alignof(x)` and `alignof(x)` under `power` alignment rules. Differential Revision: https://reviews.llvm.org/D79719
2020-06-02 23:51:58 +08:00
// CHECK-NEXT: 8 | struct A (base)
// CHECK-NEXT: 8 | double d
Recommit: Compress formatting of array type names (int [4] -> int[4]) Based on post-commit review discussion on 2bd84938470bf2e337801faafb8a67710f46429d with Richard Smith. Other uses of forcing HasEmptyPlaceHolder to false seem OK to me - they're all around pointer/reference types where the pointer/reference token will appear at the rightmost side of the left side of the type name, so they make nested types (eg: the "int" in "int *") behave as though there is a non-empty placeholder (because the "*" is essentially the placeholder as far as the "int" is concerned). This was originally committed in 277623f4d5a672d707390e2c3eaf30a9eb4b075c Reverted in f9ad1d1c775a8e264bebc15d75e0c6e5c20eefc7 due to breakages outside of clang - lldb seems to have some strange/strong dependence on "char [N]" versus "char[N]" when printing strings (not due to that name appearing in DWARF, but probably due to using clang to stringify type names) that'll need to be addressed, plus a few other odds and ends in other subprojects (clang-tools-extra, compiler-rt, etc).
2021-10-15 05:52:47 +08:00
// CHECK-NEXT: 16 | char[8] x
[AIX] Implement AIX special alignment rule about double/long double Implement AIX default `power` alignment rule by adding `PreferredAlignment` and `PreferredNVAlignment` in ASTRecordLayout class. The patchh aims at returning correct value for `__alignof(x)` and `alignof(x)` under `power` alignment rules. Differential Revision: https://reviews.llvm.org/D79719
2020-06-02 23:51:58 +08:00
// CHECK-NEXT: | [sizeof=24, dsize=24, align=4, preferredalign=4,
// CHECK-NEXT: | nvsize=24, nvalign=4, preferrednvalign=4]