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[AArch64] Predefine __AARCH64_CMODEL_*__ as GCC does 

Make Clang on aarch64 targets predefine `__AARCH64_CMODEL_SMALL__`
or `__AARCH64_CMODEL_TINY__`, etc.  These are the names that GCC
uses for its predefines.

Reviewed By: tamur, MaskRay

Differential Revision: https://reviews.llvm.org/D75002
This commit is contained in:
Roland McGrath 2020-02-21 21:25:57 -08:00 committed by Fangrui Song
parent fc6057e34f
commit d2e949eed5
2 changed files with 17 additions and 0 deletions
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7
clang/lib/Basic/Targets/AArch64.cpp
View File

@ -194,6 +194,13 @@ void AArch64TargetInfo::getTargetDefines(const LangOptions &Opts,
Builder.defineMacro("__LP64__");
}
std::string CodeModel = getTargetOpts().CodeModel;
if (CodeModel == "default")
CodeModel = "small";
for (char &c : CodeModel)
c = toupper(c);
Builder.defineMacro("__AARCH64_CMODEL_" + CodeModel + "__");
// ACLE predefines. Many can only have one possible value on v8 AArch64.
Builder.defineMacro("__ARM_ACLE", "200");
Builder.defineMacro("__ARM_ARCH", "8");

10
clang/test/Preprocessor/init-aarch64.c
View File

@ -7,8 +7,10 @@
// AARCH64: #define _LP64 1
// AARCH64_BE-NEXT: #define __AARCH64EB__ 1
// AARCH64_BE-NEXT: #define __AARCH64_CMODEL_SMALL__ 1
// AARCH64_BE-NEXT: #define __AARCH_BIG_ENDIAN 1
// AARCH64_LE-NEXT: #define __AARCH64EL__ 1
// AARCH64_LE-NEXT: #define __AARCH64_CMODEL_SMALL__ 1
// AARCH64-NEXT: #define __ARM_64BIT_STATE 1
// AARCH64-NEXT: #define __ARM_ACLE 200
// AARCH64-NEXT: #define __ARM_ALIGN_MAX_STACK_PWR 4
@ -689,3 +691,11 @@
// AARCH64-MSVC: #define __WINT_TYPE__ unsigned short
// AARCH64-MSVC: #define __WINT_WIDTH__ 16
// AARCH64-MSVC: #define __aarch64__ 1
// RUN: %clang_cc1 -triple=aarch64 -E -dM -mcmodel=small -xc /dev/null | FileCheck --check-prefix=CMODEL_SMALL %s
// RUN: %clang_cc1 -triple=aarch64 -E -dM -mcmodel=tiny -xc /dev/null | FileCheck --check-prefix=CMODEL_TINY %s
// RUN: %clang_cc1 -triple=aarch64 -E -dM -mcmodel=large -xc /dev/null | FileCheck --check-prefix=CMODEL_LARGE %s
// CMODEL_TINY: #define __AARCH64_CMODEL_TINY__ 1
// CMODEL_SMALL: #define __AARCH64_CMODEL_SMALL__ 1
// CMODEL_LARGE: #define __AARCH64_CMODEL_LARGE__ 1